选择排序(java)

 public class SelectSort {
    public static void main(String[] args) {
        //int[] arr={101,34,119,1};
        //int[] arr={9,5,6,99,45,2};
        int maxLength=80000;
        int[] arr=new int[maxLength];
 
        for (int i = 0; i < maxLength; i++) {
            arr[i]= (int) (Math.random()*maxLength);
        }
        //System.out.println(Arrays.toString(arr));
        long start = System.currentTimeMillis();
        selectSort(arr);
        long end = System.currentTimeMillis();
        System.out.println(end-start);
        //System.out.println(Arrays.toString(arr));
    }
 
    private static void selectSort(int[] arr) {
        int min=arr[0];
        int minIndex=0;
        for (int i = 0; i < arr.length-1; i++) {
            min=arr[i];
            minIndex=i;
            for (int j = i+1; j < arr.length; j++) {
                if (arr[j]<min) {
                    min=arr[j];
                    minIndex=j;
                }
            }
            if (minIndex!=i) {
                arr[minIndex]=arr[i];
                arr[i]=min;
            }
 
        }
    }
}