java交换角标

package com.lanou.demo;

import java.util.Arrays;

/*

 * 请通过代码实现以下功能：输入一个5X5的二维数组，将数组进行排序，其中一维数组按照平均值降序，一维数组内部升序排列。

 */

public class Demo3 {

public staticvoid main(String[] args) {

// 构造一个二维数组

int[][] test = { { 5, 6, 9, 7, 4 }, { 6, 4, 8, 9, 2 }, { 7, 2, 6, 9, 8 }, { 1, 6, 3, 7, 5 },

{ 9, 5, 6, 7, 2 } };

int[] a = new int[5];

for (inti = 0; i < test.length;i++) { 

Arrays.sort(test[i]);

for (intj = 0; j < test[i].length;j++) {

a[i] =test[i][j] +a[i];

}

}

/* 创建数组a 是二维数组的一维数组的和的数组 */

for (inti = 0; i < 5; i++) {

System.out.print(a[i]+" ");

}

System.out.println();

/* 给a数组加一个下标 */

int count[] = new int[5];

for (inti = 0; i < 5; i++) {

count[i] =i;

System.out.print(count[i]+" ");

}

System.out.println();

for (intj = 0; j < a.length - 1;j++) {

for (intm = 0; m < a.length -j - 1; m++) {

if (a[m] <a[m + 1]) {

inttemp = 0;

ints = 0;

temp =a[m];

a[m] =a[m + 1];

a[m + 1] =temp;

s =count[m];

count[m] =count[m + 1];

count[m + 1] =s;

}

}

}

for (inti = 0; i < 5; i++) {

System.out.print(a[i]+" ");

}

System.out.println();

/* 给a数组加一个下标 */

for (inti = 0; i < 5; i++) {

System.out.print(count[i]+" ");

}

System.out.println();

/* 输出 */

for (inti = 0; i < test.length;i++) { 

for (intj = 0; j < test[i].length;j++) {

System.out.print(test[count[i]][j] +" ");

}

System.out.println();

}

System.out.println();

}

}