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10-31-2013, 07:00 AM #81Junior Member
- Ngày tham gia
- Apr 2016
- Bài viết
- 0
em xin nộp bài :d
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Mã:import java.util.scanner; public class bt1 { public static void main(string[] args) { scanner input = new scanner(system.in); system.out.print("nhap so sinh vien: "); int n = input.nextint(); input.nextline(); string[] danhsachsv = new string[n]; system.out.println("**nhap ten cac sinh vien**"); for (int i=0; i<n; i++) { system.out.print("sinh vien " + (i+1) + ": "); danhsachsv[i] = input.nextline(); } for (int i=0; i<n; i++) { for (int j=(i+1); j<n; j++) { if (danhsachsv[i].compareto(danhsachsv[j]) > 0) { string phu = danhsachsv[i]; danhsachsv[i] = danhsachsv[j]; danhsachsv[j] = phu; } } } system.out.print("nhap ten sinh vien can tim so thu tu: "); string timsv = input.nextline(); int phu = 0; for (int i=0; i<n; i++) { if (danhsachsv[i].equals(timsv)) { system.out.println("so thu tu cua " + timsv + " la " + (i+1)); phu = 1; break; } } if (phu == 0) { system.out.println("khong co ten " + timsv + " trong danh sach."); } } }
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11-02-2013, 07:00 AM #82Senior Member
- Ngày tham gia
- Sep 2015
- Bài viết
- 203
mọi người xem hộ với, tự mầy mò học đó
bài 1:
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Mã nguồn PHP:[color=#000000]
package javaapplication[/color][color=#007700];public class [/color][color=#0000bb]baitap1 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]int a [/color][color=#007700]= [/color][color=#0000bb]5[/color][color=#007700], [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]6[/color][color=#007700], [/color][color=#0000bb]c [/color][color=#007700]=[/color][color=#0000bb]7[/color][color=#007700]; [/color][color=#0000bb]int a1[/color][color=#007700], [/color][color=#0000bb]b1[/color][color=#007700], [/color][color=#0000bb]c1[/color][color=#007700]; [/color][color=#0000bb]a1[/color][color=#007700]= [/color][color=#0000bb]a [/color][color=#007700]/ [/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]b1[/color][color=#007700]= [/color][color=#0000bb]b [/color][color=#007700]/ [/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]c1[/color][color=#007700]= [/color][color=#0000bb]c [/color][color=#007700]/ [/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phần nguyên của a là: "[/color][color=#007700]+[/color][color=#0000bb]a1[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phần nguyên của b là: "[/color][color=#007700]+[/color][color=#0000bb]b1[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phần nguyên của c là: "[/color][color=#007700]+[/color][color=#0000bb]c1[/color][color=#007700]); [/color][color=#0000bb]a1[/color][color=#007700]= [/color][color=#0000bb]a [/color][color=#007700]% [/color][color=#0000bb]3[/color][color=#007700]; [/color][color=#0000bb]b1[/color][color=#007700]= [/color][color=#0000bb]b [/color][color=#007700]% [/color][color=#0000bb]3[/color][color=#007700]; [/color][color=#0000bb]c1[/color][color=#007700]= [/color][color=#0000bb]c [/color][color=#007700]% [/color][color=#0000bb]3[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phần dư của a là: "[/color][color=#007700]+[/color][color=#0000bb]a1[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phần dư của b là: "[/color][color=#007700]+[/color][color=#0000bb]b1[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phần dư của c là: "[/color][color=#007700]+[/color][color=#0000bb]c1[/color][color=#007700]); [/color][color=#0000bb]a[/color][color=#007700]++; [/color][color=#0000bb]b[/color][color=#007700]++; [/color][color=#0000bb]c[/color][color=#007700]++; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"giá trị của a là: "[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"giá trị của b là: "[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"giá trị của c là: "[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700]); }}[/color]
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bài 2:
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Mã nguồn PHP:[color=#000000]
package javaapplication[/color][color=#007700];public class [/color][color=#0000bb]baitap2 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]float a[/color][color=#007700]=[/color][color=#0000bb]3.5f[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700]=[/color][color=#0000bb]4.3f[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]=[/color][color=#0000bb]5.2f[/color][color=#007700], [/color][color=#0000bb]x[/color][color=#007700]=[/color][color=#0000bb]0f[/color][color=#007700]; [/color][color=#0000bb]int x[/color][color=#007700]; [/color][color=#0000bb]x [/color][color=#007700]= ([/color][color=#0000bb]8[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700]-[/color][color=#0000bb]b[/color][color=#007700])/([/color][color=#0000bb]2[/color][color=#007700]*[/color][color=#0000bb]a[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"x="[/color][color=#007700]+[/color][color=#0000bb]x[/color][color=#007700]); [/color][color=#0000bb]x [/color][color=#007700]= (int) [/color][color=#0000bb]x[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"x="[/color][color=#007700]+[/color][color=#0000bb]x[/color][color=#007700]); }}[/color]
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bài 3:
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Mã nguồn PHP:[color=#000000]
package javaapplication[/color][color=#007700];public class [/color][color=#0000bb]baitap3 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]float a[/color][color=#007700]=[/color][color=#0000bb]3[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700]=[/color][color=#0000bb]4[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]=[/color][color=#0000bb]5[/color][color=#007700], [/color][color=#0000bb]p[/color][color=#007700], [/color][color=#0000bb]s[/color][color=#007700]; [/color][color=#0000bb]float a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]; [/color][color=#0000bb]p[/color][color=#007700]= ([/color][color=#0000bb]a[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700])/[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]s[/color][color=#007700]= (float) [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]sqrt[/color][color=#007700]([/color][color=#0000bb]p[/color][color=#007700]*([/color][color=#0000bb]p[/color][color=#007700]-[/color][color=#0000bb]a[/color][color=#007700])*([/color][color=#0000bb]p[/color][color=#007700]-[/color][color=#0000bb]b[/color][color=#007700])*([/color][color=#0000bb]p[/color][color=#007700]-[/color][color=#0000bb]c[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"diện tích tam giác là: "[/color][color=#007700]+[/color][color=#0000bb]s[/color][color=#007700]); [/color][color=#0000bb]a[/color][color=#007700]= (float) [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700](([/color][color=#0000bb]2[/color][color=#007700]*[/color][color=#0000bb]s[/color][color=#007700])/([/color][color=#0000bb]a[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700])); [/color][color=#0000bb]b[/color][color=#007700]= (float) [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700](([/color][color=#0000bb]2[/color][color=#007700]*[/color][color=#0000bb]s[/color][color=#007700])/([/color][color=#0000bb]c[/color][color=#007700]*[/color][color=#0000bb]b[/color][color=#007700])); [/color][color=#0000bb]c[/color][color=#007700]= (float) [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700](([/color][color=#0000bb]2[/color][color=#007700]*[/color][color=#0000bb]s[/color][color=#007700])/([/color][color=#0000bb]a[/color][color=#007700]*[/color][color=#0000bb]b[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"các gốc của tam giác lần lượt là: "[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]+[/color][color=#dd0000]", "[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]+[/color][color=#dd0000]", "[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700]); }}[/color]
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11-09-2013, 07:00 AM #83Junior Member
- Ngày tham gia
- Aug 2014
- Bài viết
- 9
bai 1:
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]baitap1 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]int a [/color][color=#007700]= [/color][color=#0000bb]57[/color][color=#007700]; [/color][color=#0000bb]int b [/color][color=#007700]= [/color][color=#0000bb]34[/color][color=#007700]; [/color][color=#0000bb]int c [/color][color=#007700]= [/color][color=#0000bb]83[/color][color=#007700]; [/color][color=#ff8000]//in phan nguyen khi chia cho 2 [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" phan nguyen (" [/color][color=#007700]+ [/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]"/2) la " [/color][color=#007700]+ ( [/color][color=#0000bb]a [/color][color=#007700]/ [/color][color=#0000bb]2 [/color][color=#007700]) ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" phan nguyen (" [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]"/2) la " [/color][color=#007700]+ ( [/color][color=#0000bb]b [/color][color=#007700]/ [/color][color=#0000bb]2 [/color][color=#007700]) ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" phan nguyen (" [/color][color=#007700]+ [/color][color=#0000bb]c [/color][color=#007700]+ [/color][color=#dd0000]"/2) la " [/color][color=#007700]+ ( [/color][color=#0000bb]c [/color][color=#007700]/ [/color][color=#0000bb]2 [/color][color=#007700]) + [/color][color=#dd0000]'
'[/color][color=#007700]); [/color][color=#ff8000]//in phan du khi chia cho 3 [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" phan du ( " [/color][color=#007700]+ [/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]"/3 ) la " [/color][color=#007700]+ ( [/color][color=#0000bb]a [/color][color=#007700]% [/color][color=#0000bb]3 [/color][color=#007700]) ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" phan du ( " [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]"/3 ) la " [/color][color=#007700]+ ( [/color][color=#0000bb]b [/color][color=#007700]% [/color][color=#0000bb]3 [/color][color=#007700]) ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" phan du ( " [/color][color=#007700]+ [/color][color=#0000bb]c [/color][color=#007700]+ [/color][color=#dd0000]"/3 ) la " [/color][color=#007700]+ ( [/color][color=#0000bb]c [/color][color=#007700]% [/color][color=#0000bb]3 [/color][color=#007700]) + [/color][color=#dd0000]'
' [/color][color=#007700]); [/color][color=#ff8000]// [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" sau khi tang len 1" [/color][color=#007700]+ [/color][color=#dd0000]", gia tri cua " [/color][color=#007700]+ [/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]" la " [/color][color=#007700]+ [/color][color=#0000bb]a[/color][color=#007700]++ ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" sau khi tang len 1" [/color][color=#007700]+ [/color][color=#dd0000]", gia tri cua " [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]" la " [/color][color=#007700]+ [/color][color=#0000bb]b[/color][color=#007700]++ ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" sau khi tang len 1" [/color][color=#007700]+ [/color][color=#dd0000]", gia tri cua " [/color][color=#007700]+ [/color][color=#0000bb]c [/color][color=#007700]+ [/color][color=#dd0000]" la " [/color][color=#007700]+ [/color][color=#0000bb]c[/color][color=#007700]++ + [/color][color=#dd0000]'
' [/color][color=#007700]); } }[/color]
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bai 2
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]baitap2 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#ff8000]// todo auto-generated method stub [/color][color=#0000bb]float a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]; [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]0f[/color][color=#007700]; [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]8f[/color][color=#007700]; [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]2f[/color][color=#007700]; if([/color][color=#0000bb]a [/color][color=#007700]== [/color][color=#0000bb]0[/color][color=#007700]) { if([/color][color=#0000bb]b [/color][color=#007700]== [/color][color=#0000bb]8[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700]) { [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phuong trinh co vo so nghiem x"[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].exit([/color][color=#0000bb]0[/color][color=#007700]); } else { [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phuong trinh khong co nghiem x"[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].exit([/color][color=#0000bb]0[/color][color=#007700]); } } else { [/color][color=#0000bb]float x [/color][color=#007700]= ([/color][color=#0000bb]8[/color][color=#007700]*[/color][color=#0000bb]c [/color][color=#007700]- [/color][color=#0000bb]b[/color][color=#007700]) / ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]a[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nghiem thuc cua phuong trinh, x = " [/color][color=#007700]+ [/color][color=#0000bb]x[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nghiem nguyen cua phuong trinh x = " [/color][color=#007700]+ (int) [/color][color=#0000bb]x[/color][color=#007700]); } }}[/color]
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bai 3
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]baitap3 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#ff8000]// todo auto-generated method stub [/color][color=#0000bb]double a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700];[/color][color=#ff8000]// a, b, c la 3 canh cua tam giac. [/color][color=#0000bb]double p[/color][color=#007700];[/color][color=#ff8000]// soherong [/color][color=#0000bb]double dientich[/color][color=#007700];[/color][color=#ff8000]//s tam giac [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]5d[/color][color=#007700]; [/color][color=#ff8000]//ab=5cm [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]5d[/color][color=#007700]; [/color][color=#ff8000]//bc=5cm [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]5d[/color][color=#007700]; [/color][color=#ff8000]//ca=5cm //tinh dien tich tam giac. [/color][color=#0000bb]p [/color][color=#007700]= ([/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#0000bb]c[/color][color=#007700]) / [/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]dientich [/color][color=#007700]= [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]sqrt[/color][color=#007700]([/color][color=#0000bb]p [/color][color=#007700]* ([/color][color=#0000bb]p [/color][color=#007700]- [/color][color=#0000bb]a [/color][color=#007700]) * ([/color][color=#0000bb]p [/color][color=#007700]- [/color][color=#0000bb]b[/color][color=#007700]) * ([/color][color=#0000bb]p [/color][color=#007700]- [/color][color=#0000bb]c[/color][color=#007700]) ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"dien tich tam giac abc la: " [/color][color=#007700]+ [/color][color=#0000bb]dientich [/color][color=#007700]+ [/color][color=#dd0000]'
'[/color][color=#007700]); [/color][color=#ff8000]//tinh so do goc a [/color][color=#0000bb]double sina [/color][color=#007700]= ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]dientich[/color][color=#007700]) / ([/color][color=#0000bb]a [/color][color=#007700]* [/color][color=#0000bb]c[/color][color=#007700]);[/color][color=#ff8000]// 2s/(ab x ac) [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"goca = " [/color][color=#007700]+ [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700]([/color][color=#0000bb]sina[/color][color=#007700]) + [/color][color=#dd0000]" rad"[/color][color=#007700]); [/color][color=#ff8000]//tinh so do goc b [/color][color=#0000bb]double sinb [/color][color=#007700]= ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]dientich[/color][color=#007700]) / ([/color][color=#0000bb]a [/color][color=#007700]* [/color][color=#0000bb]b[/color][color=#007700]);[/color][color=#ff8000]// 2s/(ab x bc) [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"gocb = " [/color][color=#007700]+ [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700]([/color][color=#0000bb]sinb[/color][color=#007700]) + [/color][color=#dd0000]" rad"[/color][color=#007700]); [/color][color=#ff8000]//tinh so do goc c [/color][color=#0000bb]double sinc [/color][color=#007700]= ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]dientich[/color][color=#007700]) / ([/color][color=#0000bb]b [/color][color=#007700]* [/color][color=#0000bb]c[/color][color=#007700]);[/color][color=#ff8000]// 2s/(bc x ca ); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"gocc = " [/color][color=#007700]+ [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700]([/color][color=#0000bb]sinc[/color][color=#007700]) + [/color][color=#dd0000]" rad"[/color][color=#007700]); } } [/color]
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11-15-2013, 07:00 AM #84Junior Member
- Ngày tham gia
- Jul 2015
- Bài viết
- 1
Gửi bởi sky6596
-
11-22-2013, 07:00 AM #85Junior Member
- Ngày tham gia
- Apr 2016
- Bài viết
- 0
mong mọi người giúp đỡ cùng chia sẽ kinh nghiệm.
bài 1:
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]bai1 [/color][color=#007700]{ [/color][color=#ff8000]/** * @param args the command line arguments */ [/color][color=#007700]public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#ff8000]// todo code application logic here [/color][color=#0000bb]int a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]; [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]5[/color][color=#007700]; [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]17[/color][color=#007700]; [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]23[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan nguyen cua " [/color][color=#007700]+ [/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]" khi chia cho 2 la: " [/color][color=#007700]+ ([/color][color=#0000bb]a [/color][color=#007700]/ [/color][color=#0000bb]2[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan du cua " [/color][color=#007700]+ [/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]" khi chia cho 3 la: " [/color][color=#007700]+ ([/color][color=#0000bb]a [/color][color=#007700]% [/color][color=#0000bb]3[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan nguyen cua " [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]" khi chia cho 2 la: " [/color][color=#007700]+ ([/color][color=#0000bb]b [/color][color=#007700]/ [/color][color=#0000bb]2[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan du cua " [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]" khi chia cho 3 la: " [/color][color=#007700]+ ([/color][color=#0000bb]b [/color][color=#007700]% [/color][color=#0000bb]3[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan nguyen cua " [/color][color=#007700]+ [/color][color=#0000bb]c [/color][color=#007700]+ [/color][color=#dd0000]" khi chia cho 2 la: " [/color][color=#007700]+ ([/color][color=#0000bb]c [/color][color=#007700]/ [/color][color=#0000bb]2[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan du cua " [/color][color=#007700]+ [/color][color=#0000bb]c [/color][color=#007700]+ [/color][color=#dd0000]" khi chia cho 3 la: " [/color][color=#007700]+ ([/color][color=#0000bb]c [/color][color=#007700]% [/color][color=#0000bb]3[/color][color=#007700])); [/color][color=#0000bb]a[/color][color=#007700]++; [/color][color=#0000bb]b[/color][color=#007700]++; [/color][color=#0000bb]c[/color][color=#007700]++; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"tang gia tri a,b,c moi bien len 1. gia tri moi lan luot la: " [/color][color=#007700]+ [/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]"\t" [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]"\t" [/color][color=#007700]+ [/color][color=#0000bb]c[/color][color=#007700]); }}[/color]
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bài 2:
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]bai2 [/color][color=#007700]{ [/color][color=#ff8000]/** * @param args the command line arguments */ [/color][color=#007700]public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#ff8000]// todo code application logic here [/color][color=#0000bb]double a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700], [/color][color=#0000bb]x[/color][color=#007700]; [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]5[/color][color=#007700]; [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]6[/color][color=#007700]; [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]7[/color][color=#007700]; if ([/color][color=#0000bb]a [/color][color=#007700]== [/color][color=#0000bb]0 [/color][color=#007700]&& ([/color][color=#0000bb]8[/color][color=#007700]*[/color][color=#0000bb]c [/color][color=#007700]- [/color][color=#0000bb]b[/color][color=#007700]) == [/color][color=#0000bb]0[/color][color=#007700]) [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phuong trinh vo so nghiem!"[/color][color=#007700]); else if ([/color][color=#0000bb]a [/color][color=#007700]== [/color][color=#0000bb]0 [/color][color=#007700]&& ([/color][color=#0000bb]8[/color][color=#007700]*[/color][color=#0000bb]c [/color][color=#007700]- [/color][color=#0000bb]b[/color][color=#007700]) != [/color][color=#0000bb]0[/color][color=#007700]) [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phuong trinh vo nghiem!"[/color][color=#007700]); else{ [/color][color=#0000bb]x [/color][color=#007700]= ([/color][color=#0000bb]8[/color][color=#007700]*[/color][color=#0000bb]c [/color][color=#007700]- [/color][color=#0000bb]b[/color][color=#007700]) / ([/color][color=#0000bb]2[/color][color=#007700]*[/color][color=#0000bb]a[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phuong trinh co nghiem duy nhat: " [/color][color=#007700]+ [/color][color=#0000bb]x[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ep kieu x ve so nguyen: " [/color][color=#007700]+ ((int ) [/color][color=#0000bb]x[/color][color=#007700])); } }}[/color]
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bài 3:
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]bai3 [/color][color=#007700]{ [/color][color=#ff8000]/** * @param args the command line arguments */ [/color][color=#007700]public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#ff8000]// todo code application logic here // nhap do dai 3 canh sao cho tong do dai 2 canh bat ky lon hon canh con lai [/color][color=#0000bb]int a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]; [/color][color=#0000bb]double p[/color][color=#007700], [/color][color=#0000bb]s[/color][color=#007700]; [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]3[/color][color=#007700]; [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]4[/color][color=#007700]; [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]5[/color][color=#007700]; [/color][color=#ff8000]// tinh dien tich tam giac [/color][color=#0000bb]p [/color][color=#007700]= ([/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#0000bb]c[/color][color=#007700])/[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#ff8000]// nua chu vi tam giac [/color][color=#0000bb]s [/color][color=#007700]= [/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]sqrt[/color][color=#007700]([/color][color=#0000bb]p [/color][color=#007700]* ([/color][color=#0000bb]p [/color][color=#007700]- [/color][color=#0000bb]a[/color][color=#007700]) * ([/color][color=#0000bb]p [/color][color=#007700]- [/color][color=#0000bb]b[/color][color=#007700]) * ([/color][color=#0000bb]p [/color][color=#007700]- [/color][color=#0000bb]c[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#0000bb]p[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#dd0000]"\t" [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#dd0000]"\t" [/color][color=#007700]+ [/color][color=#0000bb]c[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"dien tich tam giac la: " [/color][color=#007700]+ [/color][color=#0000bb]s[/color][color=#007700]); [/color][color=#ff8000]// tinh so do 3 goc cua tam gia abc // dien tich tam giac: s = 1/2 * (b * c) * sina ==> a = arcsin(2 * s / (b * c)) // so do goc a, b, c [/color][color=#0000bb]double sina [/color][color=#007700]= ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]s[/color][color=#007700]) / ([/color][color=#0000bb]b [/color][color=#007700]* [/color][color=#0000bb]c[/color][color=#007700]); [/color][color=#0000bb]double sinb [/color][color=#007700]= ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]s[/color][color=#007700]) / ([/color][color=#0000bb]a [/color][color=#007700]* [/color][color=#0000bb]c[/color][color=#007700]); [/color][color=#0000bb]double sinc [/color][color=#007700]= ([/color][color=#0000bb]2 [/color][color=#007700]* [/color][color=#0000bb]s[/color][color=#007700]) / ([/color][color=#0000bb]a [/color][color=#007700]* [/color][color=#0000bb]b[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"so do goc a: " [/color][color=#007700]+ ([/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700]([/color][color=#0000bb]sina[/color][color=#007700]))); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"so do goc b: " [/color][color=#007700]+ ([/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700]([/color][color=#0000bb]sinb[/color][color=#007700]))); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"so do goc c: " [/color][color=#007700]+ ([/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]asin[/color][color=#007700]([/color][color=#0000bb]sinc[/color][color=#007700]))); }}[/color]
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12-22-2013, 07:00 AM #86Junior Member
- Ngày tham gia
- Apr 2014
- Bài viết
- 0
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Mã nguồn PHP:[color=#000000]
[/color][color=#007700]class [/color][color=#0000bb]bai1[/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]int a[/color][color=#007700],[/color][color=#0000bb]b[/color][color=#007700],[/color][color=#0000bb]c[/color][color=#007700],[/color][color=#0000bb]d1[/color][color=#007700],[/color][color=#0000bb]d2[/color][color=#007700],[/color][color=#0000bb]d3[/color][color=#007700],[/color][color=#0000bb]t1[/color][color=#007700],[/color][color=#0000bb]t2[/color][color=#007700],[/color][color=#0000bb]t3[/color][color=#007700]; [/color][color=#0000bb]a[/color][color=#007700]=[/color][color=#0000bb]6[/color][color=#007700]; [/color][color=#0000bb]b[/color][color=#007700]=[/color][color=#0000bb]7[/color][color=#007700]; [/color][color=#0000bb]c[/color][color=#007700]=[/color][color=#0000bb]8[/color][color=#007700]; [/color][color=#0000bb]t1[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]t2[/color][color=#007700]=[/color][color=#0000bb]b[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]t3[/color][color=#007700]=[/color][color=#0000bb]c[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]d1[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700]%[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]d2[/color][color=#007700]=[/color][color=#0000bb]b[/color][color=#007700]%[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]d3[/color][color=#007700]=[/color][color=#0000bb]c[/color][color=#007700]%[/color][color=#0000bb]2[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"a/2="[/color][color=#007700]+[/color][color=#0000bb]t1[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"b/2="[/color][color=#007700]+[/color][color=#0000bb]t2[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"c/2="[/color][color=#007700]+[/color][color=#0000bb]t3[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"a/2 du la "[/color][color=#007700]+[/color][color=#0000bb]d1[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"b/2 du la "[/color][color=#007700]+[/color][color=#0000bb]d2[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"c/2 du la "[/color][color=#007700]+[/color][color=#0000bb]d3[/color][color=#007700]); [/color][color=#0000bb]a[/color][color=#007700]++;[/color][color=#0000bb]b[/color][color=#007700]++;[/color][color=#0000bb]c[/color][color=#007700]++; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"a sau khi tang la "[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"b sau khi tang la "[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"c sau khi tang la "[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700]); }}[/color]
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01-21-2014, 07:00 AM #87Junior Member
- Ngày tham gia
- May 2015
- Bài viết
- 0
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Mã nguồn PHP:[color=#000000]
package edu[/color][color=#007700].[/color][color=#0000bb]javabasic[/color][color=#007700]; [/color][color=#ff8000]/**** @author hung*/[/color][color=#007700]public class [/color][color=#0000bb]bai4_1 [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]int a[/color][color=#007700]=[/color][color=#0000bb]4[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700]=[/color][color=#0000bb]7[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700]=[/color][color=#0000bb]9[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan nguyen khi chia a,b,c cho 2 lan luot la:"[/color][color=#007700]+([/color][color=#0000bb]a[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700])+ [/color][color=#dd0000]" ;" [/color][color=#007700]+([/color][color=#0000bb]b[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700])+ [/color][color=#dd0000]" ;"[/color][color=#007700]+([/color][color=#0000bb]c[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700])); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"phan du khi chia a,b,c cho 3 lan luot la:"[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]%[/color][color=#0000bb]3[/color][color=#007700]+[/color][color=#dd0000]" ;"[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]%[/color][color=#0000bb]3[/color][color=#007700]+[/color][color=#dd0000]" ;"[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700]%[/color][color=#0000bb]3[/color][color=#007700]); [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"sau khi tang len 1 don vi thi a="[/color][color=#007700]+ ++[/color][color=#0000bb]a[/color][color=#007700]+[/color][color=#dd0000]"; b="[/color][color=#007700]+ ++[/color][color=#0000bb]b[/color][color=#007700]+[/color][color=#dd0000]"; c="[/color][color=#007700]+ ++[/color][color=#0000bb]c[/color][color=#007700]); } }[/color]
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02-05-2014, 07:00 AM #88Junior Member
- Ngày tham gia
- May 2014
- Bài viết
- 0
tiasangmoi92 anh có thể giải thích giúp em được không ạ
trituyetdoi = math.abs(a);
system.out.println("giá trị tuyệt đối của a là: "+trituyetdoi);
can = (float) math.sqrt(b);
em không hiểu tại sao lại có float ở phần tính căn. trong khi trị tuyệt đối thì lại không cần phải như vậy
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02-18-2014, 07:00 AM #89Junior Member
- Ngày tham gia
- Apr 2016
- Bài viết
- 0
bài 1:
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Mã:public static void main(string[] args) { int a = 9, b = 2, c = 1995; int phannguyen_a = a / 2, phannguyen_b = b / 2, phannguyen_c = c / 2; system.out.println("phan nguyen cua " + a + ":2= " + phannguyen_a); system.out.println("phan nguyen cua " + b + ":2= " + phannguyen_b); system.out.println("phan nguyen cua " + c + ":2= " + phannguyen_c); int phandu_a = a % 3, phandu_b = b % 3, phandu_c = c % 3; system.out.println("phan du cua " + a + ":3= " + phandu_a); system.out.println("phan du cua " + b + ":3= " + phandu_b); system.out.println("phan du cua " + c + ":3= " + phandu_c); a++; b++; c++; system.out.println("gia tri cac so sau khi tang la a= " + a + " b= " + b + " c=" + c); }
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bài 2:
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Mã:public static void main(string[] args) { float a = 10.5f, b = 12.5f, c = 95f; tim_x(a, b, c); } public static void tim_x(float a, float b, float c) { // phuong trinh: 2ax+b=8c float x; if ((8 * c - b) == 0 && (a != 0)) { system.out.println("x=0"); } if ((8 * c - b) != 0 && (a != 0)) { x = (8 * c - b) / a; system.out.println("gia tri kieu int cua \"x\" la: " + (int) x); } if ((8 * c - b) != 0 && (a == 0)) { system.out.println("phuong trinh vo nghiem!"); } if ((8 * c - b) == 0 && (a == 0)) { system.out.println("phuong trinh co vo so nghiem!"); } }
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bài 3:
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Mã:public static void main(string[] args) { float a = (float) math.sqrt(2), b = (float) math.sqrt(2), c = 2; dientichtamgiac(a, b, c); timgoc(a, b, c); } public static void dientichtamgiac(float a, float b, float c) { double p = (a + b + c) / 2; //tinh 1/2 chu vi double s = math.sqrt(p * (p - a) * (p - b) * (p - c)); //cong thuc heron system.out.println("dien tich tam giac la: " + s+" (dvdt)"); } public static void timgoc(float a, float b, float c) { double cosa, cosb, cosc; cosa = (b * b + c * c - a * a) / (2 * b * c); double goca = math.acos(cosa); system.out.println("goc thu 1 = " + goca + " (rad)"); cosb = (a * a + c * c - b * b) / (2 * a * c); double gocb = math.acos(cosb); system.out.println("goc thu 2 = " + gocb + " (rad)"); cosc = (a * a + b * b - c * c) / (2 * a * b); double gocc = math.acos(cosc); system.out.println("goc thu 3 = " + gocc + " (rad)"); }
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02-19-2014, 07:00 AM #90Junior Member
- Ngày tham gia
- Mar 2014
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xin nộp bài:
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Mã:public class baitap1 { public static void main(string[] args){ int a=16,b=17,c=18, nguyena , nguyenb ,nguyenc ,dua ,dub ,duc ; nguyena=a/2; nguyenb=b/2; nguyenc=c/2; dua=a%3; dub=b%3; duc=c%3; system.out.println("số nguyên a chia cho 2 là "+ nguyena ); system.out.println("số nguyên b chia cho 2 là "+ nguyenb ); system.out.println("số nguyên c chia cho 2 là"+ nguyenc); system.out.println("số dư a chia cho 3 là"+dua); system.out.println("số dư b chia cho 3 là"+dub); system.out.println("số dư c chia cho 3 là"+duc); a++; b++; c++; system.out.println("số a tăng lên 1 là"+a); system.out.println("số b tăng lên 1 là"+b); system.out.println("số c tăng lên 1 là"+c); } }
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Mã:public class baitap2 { public static void main(string[] args){ float a=3,b=4,c=5,x; x=(8*c-b)/(2*a); system.out.println("kết quả x của phương trình 2ax+b=8c là : "+x); int y= (int) x; system.out.println("giá trị x sau khi ép thành số nguyên là : "+y); }
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Mã:public class baitap3 { public static void main(string[] args){ double a=3,b=4,c=5,s,p,goca,gocb,gocc,tonggoc; p=(a+b+c)/2; s=math.sqrt(p*(p-a)*(p-b)*(p-c)); system.out.println("diện tích hình chữ nhật đã cho là : " +s); goca=math.todegrees(math.acos((b*b+c*c-a*a)/(2*b*c))); gocb=math.todegrees(math.acos((c*c+a*a-b*b)/(2*a*c))); gocc=math.todegrees(math.acos((a*a+b*b-c*c)/(2*a*b))); tonggoc=goca+gocb+gocc; system.out.println("góc thứ nhất là : "+ goca); system.out.println("góc thứ hai là : "+gocb); system.out.println("góc thứ ba là : "+gocc); system.out.println("tổng 3 góc là : "+tonggoc); }
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Tìm hiểu phân loại xe nâng người là gì? Cho thuê xe nâng người (hay còn gọi xe thang nâng người làm việc trên cao, thiết bị nâng người) là dòng thiết bị được thiết kế đặc biệt phù hợp đưa người lên...
Phân loại xe nâng người (xe thang nâng người) làm việc trên cao