Bài 9: Mảng trong Java!

**bsvinh** · 09-04-2013, 07:00 AM

Gửi bởi vantuancnc

em làm thế này mà nó không xếp được mong các bác giúp đỡ..

Mã nguồn PHP:


[color=#000000]
[/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]scanner input[/color][color=#007700]=new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]int n[/color][color=#007700],[/color][color=#0000bb]tg[/color][color=#007700];        [/color][color=#0000bb]int i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];        [/color][color=#0000bb]int arrint[/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]"nhap so n la:"[/color][color=#007700]);                [/color][color=#0000bb]n[/color][color=#007700]=[/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]arrint[/color][color=#007700]=new [/color][color=#0000bb]int[/color][color=#007700][[/color][color=#0000bb]n[/color][color=#007700]];        for([/color][color=#0000bb]i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/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]"nhap phan tu thu :"[/color][color=#007700]+([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700]));            [/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]=[/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextint[/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 moi nhap la:"[/color][color=#007700]);        for([/color][color=#0000bb]i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/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]arrint[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]+[/color][color=#dd0000]" "[/color][color=#007700]);        }     for([/color][color=#0000bb]i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]++){for([/color][color=#0000bb]int j[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]<=[/color][color=#0000bb]i[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]++)        {            if([/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]<[/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]])            {                [/color][color=#0000bb]tg[/color][color=#007700]=[/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]];                [/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]=[/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]];                [/color][color=#0000bb]arrint[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]]=[/color][color=#0000bb]tg[/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]"mnag xep theo thu tu tang dan la:"[/color][color=#007700]);                     for([/color][color=#0000bb]i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/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]arrint[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]+[/color][color=#dd0000]" "[/color][color=#007700]);                }    }}[/color]

bạn kiểm tra lại chỗ bôi đỏ nhé
for(i=0;i<0;i++){
for(int j=0;j<=i;j++)

**loannt93@yahoo.com** · 09-04-2013, 07:00 AM

Gửi bởi heroofyouy2k

nhờ các bác giúp đỡ với ạ. em làm bài tập 1 với mã như sau:

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Mã nguồn PHP:


[color=#000000]
import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700]; public class array { private static [/color][color=#0000bb]scanner nhapdulieu[/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]nhapdulieu [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]string [/color][color=#007700][] [/color][color=#0000bb]arrsinhvien[/color][color=#007700]; [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"số lượng sinh viên? "[/color][color=#007700]); [/color][color=#ff8000]//khai báo độ lớn của mảng từ số liệu nhập vào[/color][color=#0000bb]arrsinhvien [/color][color=#007700]= new [/color][color=#0000bb]string[/color][color=#007700][[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]()];[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"số lượng sinh viên là " [/color][color=#007700]+ [/color][color=#0000bb]arrsinhvien[/color][color=#007700].[/color][color=#0000bb]length[/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]"
nhập tên sinh viên:"[/color][color=#007700]); [/color][color=#ff8000]//vòng lặp để nhập tên sv[/color][color=#007700]for ([/color][color=#0000bb]int i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]arrsinhvien[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++){[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"sv" [/color][color=#007700]+ ([/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#0000bb]1[/color][color=#007700]) + [/color][color=#dd0000]": "[/color][color=#007700]);[/color][color=#0000bb]arrsinhvien[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]] = [/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();} [/color][color=#ff8000]//lấy tên sv theo stt[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"bạn muốn tìm sv có stt nào? "[/color][color=#007700]);[/color][color=#0000bb]int stt [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"sinh viên stt " [/color][color=#007700]+ [/color][color=#0000bb]stt [/color][color=#007700]+ [/color][color=#dd0000]" có tên là " [/color][color=#007700]+ [/color][color=#0000bb]arrsinhvien[/color][color=#007700][[/color][color=#0000bb]stt [/color][color=#007700]- [/color][color=#0000bb]1[/color][color=#007700]]); }}[/color]

nhưng mà lúc chạy console thì nó không dừng lại ở sv1 cho em nhập tên mà nhảy luôn qua sv2. lỗi này không biết là do đâu. mong anh em chỉ giáo ạ.

Mã nguồn PHP:


[color=#000000]
số lượng sinh viên[/color][color=#007700]? [/color][color=#0000bb]4số lượng sinh viên là 4nhập tên sinh viên[/color][color=#007700]:[/color][color=#0000bb]sv1[/color][color=#007700]: [/color][color=#0000bb]sv2[/color][color=#007700]: [/color][color=#0000bb]bsv3[/color][color=#007700]: [/color][color=#0000bb]csv4[/color][color=#007700]: [/color][color=#0000bb]dbạn muốn tìm sv có stt nào[/color][color=#007700]? [/color][color=#0000bb]3sinh viên stt 3 có tên là c[/color]

</blockquote></div>
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Mã nguồn PHP:


[color=#000000]
lúc bạn nhập số lượng sinh viên[/color][color=#007700]. [/color][color=#0000bb]tức là n[/color][color=#007700]=[/color][color=#0000bb]4 chẳng hạn[/color][color=#007700].[/color][color=#0000bb]lúc này ở dử liệu bạn vừa nhập n[/color][color=#007700]=[/color][color=#0000bb]4 và nó còn thừa 1 kýtự [/color][color=#dd0000]"enter" [/color][color=#0000bb]xuống dòng[/color][color=#007700]. [/color][color=#0000bb]cho nên khi chạy sang câu lệnhtiếp theo[/color][color=#007700]. [/color][color=#0000bb]khi bạn muốn nhật tên sinh viên thứ nhất[/color][color=#007700], [/color][color=#0000bb]thìneatbeans hoặc eclipse của bạn sẽ ngầm định gán kí tự[/color][color=#dd0000]"enter" [/color][color=#0000bb]này cho dử liệu mà bạn nhập vào[/color][color=#007700]. [/color][color=#0000bb]cho nên bạn chỉnhập được những data sau mà không hề bị gì[/color][color=#007700]... [/color][color=#0000bb]để giải quyết vấn đề[/color][color=#007700]: [/color][color=#0000bb]bạn phải loại bỏ ký tự xuống dòng đó[/color][color=#007700].[/color][color=#0000bb]vd[/color][color=#007700]: [/color][color=#0000bb]ban đầu khai báo[/color][color=#007700]:    [/color][color=#0000bb]scanner in [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);    [/color][color=#ff8000]// khi bạn nhập số lượng sinh viên xong.    [/color][color=#0000bb]n [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700](); [/color][color=#ff8000]// khi nhập vào thì ide chỉ nhận n=4 chẳng hạn,    [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700](); [/color][color=#ff8000]// loại bỏ kí tự enter.    // sau đó nhập bình thường.[/color]

**thaonguyen0494** · 09-05-2013, 07:00 AM

Mã:

import java.util.scanner;
public class bai1 {
 
    /**
    * @param args the command line arguments
    */
    public static void main(string[] args) {
        scanner in = new scanner(system.in);
        int n;
        string t,tsv;
        system.out.println("so sinh vien can nhap la: ");
        n = in.nextint();
        in.nextline();
        string [] sosv = new string[n];
        for (int i = 0; i < sosv.length; i++){
            system.out.println("ten sv thu " + (i+1) + " la: ");
            sosv[i] = in.nextline();
        }
        system.out.println("ten sv can tim la: ");
        tsv =in.nextline();
        for ( int i = 0; i < n; i++){
            if (tsv.equals(sosv[i])){
                system.out.println("co sinh vien trong danh sach");
                break;
            } else {
                system.out.println("khong co sinh vien trong danh sach");
                break;
            }
        }
    }
}

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Mã:

import java.util.scanner;
public class bai2 {
 
    /**
    * @param args the command line arguments
    */
    public static void main(string[] args) {
        // todo code application logic here
        scanner in = new scanner(system.in);
        int n,tg,i;
        system.out.println("tong so can nhap la: ");
        n = in.nextint();
        int [] nhaplieu = new int[n];
        for ( i = 0; i< n; i++){
            system.out.println("so thu " + (i+1) + " la: ");
            nhaplieu[i] = in.nextint();
        }
        system.out.println("sep lai mang theo chieu tang dan: ");
        for ( i = 0; i< n; i++){
            for (int j = i+1; j< n; j++){
                if (nhaplieu[i]>nhaplieu[j]){
                tg = nhaplieu[i];
                nhaplieu[i] = nhaplieu[j];
                nhaplieu[j] = tg;
                }
            }
            system.out.println("so thu " + (i+1) + " la: ");
            system.out.println(nhaplieu[i]);
        }
    }
}

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Mã:

import java.util.scanner;
public class bai3 {
 
    /**
    * @param args the command line arguments
    */
    public static void main(string[] args) {
        // todo code application logic here
        scanner in = new scanner(system.in);
        int h,c;
        system.out.println("nhap so hang: ");
        h = in.nextint();
        system.out.println("nhap so cot: ");
        c = in.nextint();
        int [] [] mt1 = new int[h][c];
        system.out.println("nhap ma tran 1: ");
        for ( int i =0; i <h ; i++){
            for (int j = 0; j <c;j++){
                system.out.println("a["+i+"]["+j+"]");
                mt1[i][j] = in.nextint();
            }
        }
        system.out.println("ma tran 1 vua nhap la: ");
            for ( int i =0; i <h ; i++){
            for (int j = 0; j <c;j++){
                system.out.println("  " + mt1[i][j]);
            }
            system.out.println("");
        }
                int [] [] mt2 = new int[h][c];
        system.out.println("nhap ma tran 2: ");
        for ( int i =0; i <h ; i++){
            for (int j = 0; j <c;j++){
                system.out.println("a["+i+"]["+j+"]");
                mt2[i][j] = in.nextint();
            }
        }
        system.out.println("ma tran 2 vua nhap la: ");
            for ( int i =0; i <h ; i++){
            for (int j = 0; j <c;j++){
                system.out.println("  " + mt2[i][j]);
            }
            system.out.println("");
        }
            system.out.println("cong 2 ma tran: ");
            int [][] mt3 = new int[h][c];
            for (int i =0; i <h; i++){
                for (int j =0; j< c; j++){
                    mt3[i][j] = mt1[i][j] + mt2[i][j];
                    system.out.println("  "+ mt3[i][j]);
                }
                system.out.println("");
            }
    }
}

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**b10bcvlunazu** · 09-08-2013, 07:00 AM

bai 01
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Mã:

import java.io.bufferedreader;
import java.io.ioexception;
import java.io.inputstreamreader;
import java.util.scanner;
 
public class bai02 {
    public static void main(string[]args) throws numberformatexception, ioexception{
        int n;
        string[]s=new string[10];
        bufferedreader ii=new bufferedreader(new inputstreamreader(system.in));
        scanner in=new scanner(system.in);
 
        system.out.println("nhap so sv: ");
        n=integer.parseint(ii.readline());       
        system.out.println("nhap ho ten sv:");
        int i,j;
        for(i=0;i<n;i++)
        {
            system.out.print("sv "+i+": ");
            s[i]=in.nextline();
           
        }
        system.out.println("danh sach sv da nhap:");
        for(i=0;i<n;i++)
        {
            system.out.println(s[i]);
        }
        system.out.println("nhap ho ten sv can kiem tra:");
        string s1=new string();
        s1=in.nextline();
        int dem=0;
        for(i=0;i<n;i++)
        {
            if(s[i].equals(s1))
            {
                system.out.println("co sv nay trong ds");
                dem++;
                break;
            }
           
        }
        if(dem<1)
        {
                system.out.println("khong co sv nay trong ds");
               
        }
    }
}

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</div>

**huyentrang_92** · 09-08-2013, 07:00 AM

bai 02
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Mã:

import java.util.scanner;
public class bai02 {
    public static void main(string[]args){
        scanner in=new scanner(system.in);
        int n;
        system.out.println("so n can nhap: ");
        n=in.nextint();
        int i;
        int[]a=new int[n];
        system.out.println("nhap phan tu mang:");
        for(i=0;i<n;i++)
        {
            system.out.println("so thu "+i+":");
            a[i]=in.nextint();
        }
        system.out.println("mang da nhap la:");
        for(i=0;i<n;i++)
        {
            system.out.print(a[i]+"\t");
        }
        system.out.println("
(sap xep mang)");
        int j,tmp;
        for(i=0;i<n-1;i++)
        {
            for(j=i+1;j<n;j++)
            {
                if(a[i]>a[j])
                {
                    tmp=a[i];
                    a[i]=a[j];
                    a[j]=tmp;
                }   
            }
        }
        system.out.println("mang sau khi duoc sap xep:");
        for(i=0;i<n;i++)
        {
            system.out.print(a[i]+"\t");
        }
    }
}

</blockquote></div>
</div>
</div>

**alenmic** · 09-08-2013, 07:00 AM

bai 03
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Mã:

import java.util.scanner;
public class bai02 {
    public static void main(string[]args){
        scanner in=new scanner(system.in);
        int n,m;
        system.out.println("cap ma tran can nhap: ");
        n=in.nextint();
        m=in.nextint();
        system.out.println("nhap phan tu ma tran :");
        int[][]a=new int[n][m];
        int[][]b=new int[n][m];
        int[][]c=new int[n][m];
        system.out.println("nhap ma tran thu 1: ");
        nhapmt(a,n,m);
        system.out.println("nhap ma tran thu 2: ");
        nhapmt(b,n,m);
        system.out.println("in ma tran thu 1:");
        inmt(a,n,m);
        system.out.println("in ma tran thu 2: ");
        inmt(b,n,m);
        system.out.println("tong 2 ma tran ");
        tongmt(a,b,c,n,m);
    }
    public static void nhapmt(int [][]a,int n,int m)
    {
        scanner in=new scanner(system.in);
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<m;j++)
            {
                system.out.print(i+","+j+": ");
                a[i][j]=in.nextint();
            }
        }
    }
    public static void inmt(int [][]a,int n,int m)
    {
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<m;j++)
            {
                system.out.print(a[i][j]+"\t");
            }
            system.out.println();
        }
    }
    public static void tongmt(int [][]a,int[][]b,int[][]c,int n,int m)
    {
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<m;j++)
            {
                c[i][j]=a[i][j]+b[i][j];
                system.out.print(c[i][j]+"\t");
            }
            system.out.println();
        }
    }
}

</blockquote></div>
</div>
</div>

**Nhitran** · 09-17-2013, 07:00 AM

Gửi bởi hohoaikiet

Mã nguồn PHP:


[color=#000000]
sau khi nhập xong số sinh viên n[/color][color=#007700]=[/color][color=#0000bb]4 [/color][color=#007700]([/color][color=#0000bb]giả sử n[/color][color=#007700]=[/color][color=#0000bb]4[/color][color=#007700]) [/color][color=#0000bb]thì cònthừa 1 ký tự [/color][color=#dd0000]"enter"[/color][color=#007700]. [/color][color=#0000bb]tức là bạn nhập n[/color][color=#007700]=[/color][color=#0000bb]4 thì bạn nhấnphím enter để sang lệnh thao tác khác[/color][color=#007700]. [/color][color=#0000bb]đó là lý [/color][color=#007700]do [/color][color=#0000bb]nóxuất hiện 1 lần 2 dòng[/color][color=#007700]. [/color][color=#0000bb]và cũng vì câu lệnh tiếp theocủa bạn đọc vào 1 string nên lệnh nào sẽ đọc mặc đinh [/color][color=#dd0000]"enter"[/color][color=#0000bb]vào string đó[/color][color=#007700]. [/color][color=#0000bb]cho nên ở dòng đầu thấy trống không[/color][color=#007700].[/color][color=#0000bb]giải quyết[/color][color=#007700]: [/color][color=#0000bb]bạn nên thêm dòng nhaplieu[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]() [/color][color=#0000bb]sau khinhập số sinh viên[/color][color=#007700]. [/color][color=#0000bb]nó sẽ xóa đi ký tự enter thừa của bạn đấy[/color][color=#007700].[/color]

thế khi mình nhập nhiều giá trị n thì mình có cần phải dùng nhiều câu lệnh in.nextline() không.hay chỉ khi nhập n trước câu lệnh xử lý string thôi ?

**marylove** · 09-17-2013, 07:00 AM

Gửi bởi somedayiws

thế khi mình nhập nhiều giá trị n thì mình có cần phải dùng nhiều câu lệnh in.nextline() không.hay chỉ khi nhập n trước câu lệnh xử lý string thôi ?

bạn dùng nhiều nextint, nhập nhiều thì có dấu cách là đc!

**taidat1230** · 10-10-2013, 07:00 AM

sao không bạn nào post bài lên để cùng nhau thảo luận nếu ai chưa làm được thì có thể hỏi nhau được nhiều hơn mình mới vào website này nên mong các bạn giúp đỡ nhiều

**autokhangthinh732000** · 10-18-2013, 07:00 AM

bai cua minh ne, mong cac ban dong gop y kien :d

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<div class="bbcm_spoiler_noscript"><blockquote>

Mã nguồn PHP:


[color=#000000]
package com[/color][color=#007700].[/color][color=#0000bb]hanhnv[/color][color=#007700].[/color][color=#0000bb]core[/color][color=#007700]; [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700]; public class [/color][color=#0000bb]bai9 [/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]bai1[/color][color=#007700]();        [/color][color=#0000bb]bai2[/color][color=#007700]();        [/color][color=#0000bb]bai3[/color][color=#007700]();    }     public static [/color][color=#0000bb]void bai1[/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]"nhap so sinh vien: "[/color][color=#007700]);        [/color][color=#0000bb]scanner s [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]int n [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        while ([/color][color=#0000bb]n[/color][color=#007700]<[/color][color=#0000bb]1[/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]"ban phai nhap so sinh vien lon hon 0, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]n [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        }        [/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700];        [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();         [/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]arrsv [/color][color=#007700]= new [/color][color=#0000bb]string[/color][color=#007700][[/color][color=#0000bb]n[/color][color=#007700]];        [/color][color=#0000bb]boolean found [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];         for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]arrsv[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]i[/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]"sinh vien thu " [/color][color=#007700]+ ([/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#0000bb]1[/color][color=#007700]) + [/color][color=#dd0000]" la: "[/color][color=#007700]);            [/color][color=#0000bb]arrsv[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]] = [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/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]"nhap ten sinh vien can tim: "[/color][color=#007700]);        [/color][color=#0000bb]string search [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();         for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]arrsv[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            if ([/color][color=#0000bb]search[/color][color=#007700].[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]arrsv[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]])) {                [/color][color=#0000bb]j[/color][color=#007700]++;            }        }        if ([/color][color=#0000bb]j [/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]"khong co sinh vien nao ten " [/color][color=#007700]+ [/color][color=#0000bb]search                    [/color][color=#007700]+ [/color][color=#dd0000]" o trong danh sach."[/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]"sinh vien ten " [/color][color=#007700]+ [/color][color=#0000bb]search                    [/color][color=#007700]+ [/color][color=#dd0000]" co trong danh sach nay."[/color][color=#007700]);     }     public static [/color][color=#0000bb]void bai2[/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]"nhap vao so phan tu: "[/color][color=#007700]);        [/color][color=#0000bb]scanner s [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]int n [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();             while ([/color][color=#0000bb]n[/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]"nhap it nhat la 2 phan tu, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]n [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        }             [/color][color=#0000bb]int[/color][color=#007700][] [/color][color=#0000bb]arr [/color][color=#007700]= new [/color][color=#0000bb]int[/color][color=#007700][[/color][color=#0000bb]n[/color][color=#007700]];             for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]arr[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]i[/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 tu thu "[/color][color=#007700]+([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700])+[/color][color=#dd0000]": "[/color][color=#007700]);            [/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]] = [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        }             for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]arr[/color][color=#007700].[/color][color=#0000bb]length [/color][color=#007700]- [/color][color=#0000bb]1[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            for ([/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#0000bb]1[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]arr[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++) {                if ([/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]>[/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]]) {                    [/color][color=#0000bb]int temp [/color][color=#007700]= [/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]];                    [/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]] = [/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]];                    [/color][color=#0000bb]arr[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]] = [/color][color=#0000bb]temp[/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]"cac phan tu sau khi nhap la: "[/color][color=#007700]);        for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]arr[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]i[/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]arr[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]);        }    }     public static [/color][color=#0000bb]void bai3[/color][color=#007700](){        [/color][color=#0000bb]scanner s [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/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]"nhap so cot: "[/color][color=#007700]);        [/color][color=#0000bb]int columns [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        while ([/color][color=#0000bb]columns[/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]"nhap it nhat la 2 phan tu, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]columns[/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/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]"nhap so dong: "[/color][color=#007700]);        [/color][color=#0000bb]int rows [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        while ([/color][color=#0000bb]rows[/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]"nhap it nhat la 2 phan tu, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]rows [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        }             [/color][color=#0000bb]int[/color][color=#007700][][] [/color][color=#0000bb]arr1 [/color][color=#007700]= new [/color][color=#0000bb]int[/color][color=#007700][[/color][color=#0000bb]rows[/color][color=#007700]][[/color][color=#0000bb]columns[/color][color=#007700]];        [/color][color=#0000bb]int[/color][color=#007700][][] [/color][color=#0000bb]arr2 [/color][color=#007700]= new [/color][color=#0000bb]int[/color][color=#007700][[/color][color=#0000bb]rows[/color][color=#007700]][[/color][color=#0000bb]columns[/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]"bat dau nhap ma tran 1:"[/color][color=#007700]);        for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]rows[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            for ([/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]columns[/color][color=#007700]; [/color][color=#0000bb]j[/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 tu ma tran 1 arr["[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#dd0000]"]["[/color][color=#007700]+[/color][color=#0000bb]j[/color][color=#007700]+[/color][color=#dd0000]"]"[/color][color=#007700]);                [/color][color=#0000bb]arr1[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]] = [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/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]"bat dau nhap ma tran 2:"[/color][color=#007700]);        for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]rows[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            for ([/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]columns[/color][color=#007700]; [/color][color=#0000bb]j[/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 tu ma tran 2 arr["[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#dd0000]"]["[/color][color=#007700]+[/color][color=#0000bb]j[/color][color=#007700]+[/color][color=#dd0000]"]"[/color][color=#007700]);                [/color][color=#0000bb]arr2[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]] = [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();            }        }             [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"ma tran 1: "[/color][color=#007700]);        for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]rows[/color][color=#007700]; [/color][color=#0000bb]i[/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]" "[/color][color=#007700]);            for ([/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]columns[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#0000bb]arr1[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]]+[/color][color=#dd0000]"    "[/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]""[/color][color=#007700]);             [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"ma tran 2: "[/color][color=#007700]);        for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]rows[/color][color=#007700]; [/color][color=#0000bb]i[/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]" "[/color][color=#007700]);            for ([/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]columns[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#0000bb]arr2[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]]+[/color][color=#dd0000]"    "[/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]""[/color][color=#007700]);                  [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"tong 2 ma tran: "[/color][color=#007700]);        for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]rows[/color][color=#007700]; [/color][color=#0000bb]i[/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]" "[/color][color=#007700]);            for ([/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]columns[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print(([/color][color=#0000bb]arr1[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]] + [/color][color=#0000bb]arr2[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]])+[/color][color=#dd0000]"    "[/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]""[/color][color=#007700]);        }     } [/color]

</blockquote></div>
</div>
</div>

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