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  • 课本6.7作业

    1.复制数组

    int[] arr1 = {14, 7, 12, 22, 30, 9};
            
    int[] arr2 = new int[5];
    arr2
    = Arrays.copyOfRange(arr1, 0, 4);
    for(int a : arr1) { System.out.print(a + " "); }
    System.out.println();
    for(int b : arr2) { System.out.print(b + " "); }

    2.输出数组中最小的数

     1         int arr[] = {14, 7, 12, 22, 30, 9};
     2         for(int a = 1; a < arr.length; a++)
     3         {
     4             for(int b = 0; b < arr.length - 1; b++)
     5             {
     6                 if(arr[b] > arr[b + 1])
     7                 {
     8                     int h = arr[b + 1];
     9                     arr[b + 1] = arr[b];
    10                     arr[b] = h;
    11                 }
    12             }
    13         }
    14         System.out.println(arr[0]);

    3.替换数组

     1         String tr = "bb";
     2         String  []wow = new String []{"jhg", "kf", "jj", "hg", "rt", "ute"};
     3         for(int a = 0; a < wow.length; a++)
     4         {
     5             System.out.print(wow[a] + " ");
     6         }
     7         Arrays.fill(wow, 2, 3, tr);
     8         
     9         System.out.println();
    10         for(int a = 0; a < wow.length; a++)
    11         {
    12             System.out.print(wow[a] + " ");
    13         }

    4,二维数组调换顺序输出

     1         int[][] a = new int[3][3];
     2         a[0] = new int[]{1, 2, 3};
     3         a[1] = new int[]{4, 5, 6};
     4         a[2] = new int[]{7, 8, 9};
     5         
     6         for(int x = 0; x < a.length; x++)
     7         {
     8             for(int y = 0; y < a.length; y++)
     9             {
    10                 System.out.print(a[x][y] + " ");
    11             }
    12             System.out.println();
    13         }
    14         for(int x = 0; x < a.length; x++)
    15         {
    16             for(int y = 0; y < a.length; y++)
    17             {
    18                 System.out.print(a[y][x] + " ");
    19             }
    20             System.out.println();

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  • 原文地址:https://www.cnblogs.com/wgbs25673578/p/4865498.html
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