JAVA语法——选择排序

package 选择排序;

public class 选择排序 {
    public static void main(String[] args)
    {
        int [] arr = {1,3,2,45,65,33,12};
        
        System.out.println("交换之前");
        
        for(int num:arr)
            System.out.print(num+" ");
        
        //核心代码
        for(int i = 0; i < arr.length-1; i++)
        {
            int k = i;
            
            for(int j = k+1; j < arr.length; j++)
                if(arr[j] < arr[k])
                    k = j;
            
            if(i != k)
            {
                int temp = arr[k];
                arr[i] = arr[k];
                arr[k] = temp;
            }
        }
        
        System.out.println();
        System.out.println("交换后");
        
        for(int num:arr)
            System.out.print(num+" ");
    }
}