Java程序进行递归插入排序

插入排序是一种简单的排序算法，其工作方式类似于我们手中对扑克牌的排序。
下面是插入排序的迭代算法

算法

// Sort an arr[] of size n
insertionSort(arr, n) 
    Loop from i = 1 to n-1.
       a) Pick element arr[i] and insert
          it into sorted sequence arr[0..i-1] 

Java

// Recursive Java program for insertion sort
 
import java.util.Arrays;
 
public class GFG
{
    // Recursive function to sort an array using
    // insertion sort
    static void insertionSortRecursive(int arr[], int n)
    {
        // Base case
        if (n <= 1)
            return;
      
        // Sort first n-1 elements
        insertionSortRecursive( arr, n-1 );
      
        // Insert last element at its correct position
        // in sorted array.
        int last = arr[n-1];
        int j = n-2;
      
        /* Move elements of arr[0..i-1], that are
          greater than key, to one position ahead
          of their current position */
        while (j >= 0 && arr[j] > last)
        {
            arr[j+1] = arr[j];
            j--;
        }
        arr[j+1] = last;
    }
     
    // Driver Method
    public static void main(String[] args)
    {
        int arr[] = {12, 11, 13, 5, 6};
      
        insertionSortRecursive(arr, arr.length);
         
        System.out.println(Arrays.toString(arr));
    }
}
Please refer complete article on Recursive Insertion Sort for more details!