选择排序

package com.cts.elt.sort;

import java.util.Arrays;

public class SelectSort {

    private int[] arr;


    public  void sort(){

        for (int i =0;i<arr.length;i++){

            for (int j=i;j<arr.length;j++){

                if (arr[i]>arr[j])

                    swap(i,j);

            }


        }


    }

    public  void swap(int a,int b){

        int t =arr[a];
        arr[a]=arr[b];
        arr[b]=t;

    }

    public static void main(String [] args){

        SelectSort selectSort =new SelectSort();

        selectSort.arr =new int[]{1,8,4,7,2};

        selectSort.sort();

        System.out.println(Arrays.toString(selectSort.arr));




    }




}