tiếp tục nộp bài.
bài 1.
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Mã nguồn PHP:
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[/color][color=#007700]public class [/color][color=#0000bb]huyhung [/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]a[/color][color=#007700]=[/color][color=#0000bb]9[/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]7[/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: a/2="[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700]+[/color][color=#dd0000]" b/2="[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]/[/color][color=#0000bb]2[/color][color=#007700]+[/color][color=#dd0000]" c/2="[/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 dư: a%3="[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]%[/color][color=#0000bb]3[/color][color=#007700]+[/color][color=#dd0000]" b%3="[/color][color=#007700]+[/color][color=#0000bb]b[/color][color=#007700]%[/color][color=#0000bb]3[/color][color=#007700]+[/color][color=#dd0000]" c%3="[/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]1[/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="[/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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chấm điểm: trong bài của bạn có 1 dòng code: a+=1; bạn nên dùng a++ để
thay thế vì nó sẽ tối ưu hơn. có thể nó chỉ là 1 chút nhầm lẫn của bạn
nhưng lần sau bạn cần rút kinh nghiệm vì đây là lỗi không nên vấp phải lần thứ 2.
bài bạn 8 điểm
bài 2.
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Mã nguồn PHP:
[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]huyhung [/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]b[/color][color=#007700],[/color][color=#0000bb]c[/color][color=#007700]; [/color][color=#0000bb]int x1[/color][color=#007700]; [/color][color=#0000bb]a[/color][color=#007700]=[/color][color=#0000bb]5f[/color][color=#007700]; [/color][color=#0000bb]b[/color][color=#007700]=[/color][color=#0000bb]5f[/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]){ [/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]"nghiệm của phương trình là: "[/color][color=#007700]+[/color][color=#0000bb]x[/color][color=#007700]); [/color][color=#0000bb]x1[/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]"giá trị của x sau khi ép kiểu: "[/color][color=#007700]+[/color][color=#0000bb]x1[/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]"giá trị của a phải khác 0."[/color][color=#007700]); }}}[/color]
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chấm điểm: 10 điểm
bài 3. <div class="bbcodeblock bbcodequote bbcmspoilerblock">
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Mã nguồn PHP:
[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]huyhung [/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]b[/color][color=#007700],[/color][color=#0000bb]c[/color][color=#007700],[/color][color=#0000bb]s[/color][color=#007700],[/color][color=#0000bb]p[/color][color=#007700]; [/color][color=#0000bb]double cos_a[/color][color=#007700],[/color][color=#0000bb]cos_b[/color][color=#007700],[/color][color=#0000bb]cos_c[/color][color=#007700]; [/color][color=#0000bb]a[/color][color=#007700]=[/color][color=#0000bb]2f[/color][color=#007700]; [/color][color=#0000bb]b[/color][color=#007700]=[/color][color=#0000bb]5f[/color][color=#007700]; [/color][color=#0000bb]c[/color][color=#007700]=[/color][color=#0000bb]6f[/color][color=#007700]; [/color][color=#0000bb]p[/color][color=#007700]= (float) ([/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 của tam giác: "[/color][color=#007700]+[/color][color=#0000bb]s[/color][color=#007700]); [/color][color=#0000bb]cos_a[/color][color=#007700]= (float) ([/color][color=#0000bb]b[/color][color=#007700]*[/color][color=#0000bb]b[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700]-[/color][color=#0000bb]a[/color][color=#007700]*[/color][color=#0000bb]a[/color][color=#007700])/([/color][color=#0000bb]2[/color][color=#007700]*[/color][color=#0000bb]b[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700]); [/color][color=#0000bb]cos_b[/color][color=#007700]= (float) ([/color][color=#0000bb]a[/color][color=#007700]*[/color][color=#0000bb]a[/color][color=#007700]+[/color][color=#0000bb]c[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700]-[/color][color=#0000bb]b[/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]c[/color][color=#007700]); [/color][color=#0000bb]cos_c[/color][color=#007700]= (float) ([/color][color=#0000bb]b[/color][color=#007700]*[/color][color=#0000bb]b[/color][color=#007700]+[/color][color=#0000bb]a[/color][color=#007700]*[/color][color=#0000bb]a[/color][color=#007700]-[/color][color=#0000bb]c[/color][color=#007700]*[/color][color=#0000bb]c[/color][color=#007700])/([/color][color=#0000bb]2[/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]"góc a="[/color][color=#007700]+[/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]todegrees [/color][color=#007700]([/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]acos[/color][color=#007700]([/color][color=#0000bb]cos_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]"góc b="[/color][color=#007700]+[/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]todegrees [/color][color=#007700]([/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]acos[/color][color=#007700]([/color][color=#0000bb]cos_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]"góc c="[/color][color=#007700]+[/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]todegrees [/color][color=#007700]([/color][color=#0000bb]math[/color][color=#007700].[/color][color=#0000bb]acos[/color][color=#007700]([/color][color=#0000bb]cos_c[/color][color=#007700]))); }}[/color]
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chấm điểm: 10 điểm
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