Daily practice------There are 10 numbers that are required to be output from large to small by selection method

Title: There are 10 numbers that are required to be output by selection method from large to small

The key to solving the problem:The interchange of numerical index

Ideas:1. Create an array

2. Input data

3. Find the largest index

4. Index interchange

Process: Next, we will write the code step by step according to our problem-solving ideas

1. Create an array
    int[] nums = new int[10];

2. Input data
    Scanner sc = new Scanner(System.in);
    for (int i = 0; i < nums.length; i++) {
System.out.print("The first" + (i + 1) + "The number of digits is:");
nums[i] = sc.nextInt();
    }
 
    3. Find the largest index
    for (int i = 0; i < nums.length; i++) {
int index = 0;
for (int j = 0; j < nums.length - i; j++) {
if(nums[index] > nums[j]){
        index = j;
        }
      }
     ">int temp = nums[nums.length - i - 1];
nums[nums.length - i - 1] = nums[index];
nums[index] = temp;
    }
    System.out.println("result:");
for (int i = 0; i < nums.length; i++) {
       System.out.print(nums[i] + " ");
     }

The full results are as follows:

  For your convenience, the source code is attached below:

// 1. Create an arrayint[] nums = new int[10];// 2. Input dataScanner sc = new Scanner(System.in);for (int i = 0; i < nums.length; i++) {System.out.print("The first" + (i + 1) + "The number of digits is:");nums[i] = sc.nextInt();}// selection method// 3. Find the largest indexfor (int i = 0; i < nums.length; i++) {int index = 0;for (int j = 0; j < nums.length - i; j++) {if(nums[index] > nums[j]){index = j;}}//4. Index swapint temp = nums[nums.length - i - 1];nums[nums.length - i - 1] = nums[index];nums[index] = temp;}System.out.println("Result: ");for (int i = 0; i < nums.length; i++) {System.out.print(nums[i] + " ");}

Summary:After the index is swapped, the array is traversed, and then judged, you can use breakpoints to watch the operation of this code line by line

Exercise tomorrow:Find the sum of the diagonal elements of a 3*3 matrix

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