Select Sort

package com.syd.sort;

/**
 * Description:
 * ClassName:SelectSort
 * Package:com.syd.sort
 * Date:2018/6/8 21:59
 * Author: syd-fish
 */
public class SelectSort {
    public static void main(String[] args) {
        int n = 100;
        int[] arrs = factoryRandomDigit(n);
        for (int i=0; i<n-1; i++){
            int temp = i;
            for (int j=i+1; j<n; j++){
                if (arrs[j]<arrs[temp]){
                    temp=j;
                }
            }
            if (temp > i){
                swap(arrs,i,temp);
            }
        }

        for (int i=0; i<n-1; i++){
            if(arrs[i]>arrs[i+1]){
                System.err.println("排序错误！");
            }
        }
        for (int i=0; i<n; i++){
            System.err.print(arrs[i]+",");
        }
    }
    private static void swap(int[] arrs ,int arr1, int arr2) {
        int t = arrs[arr1];
        arrs[arr1] = arrs[arr2];
        arrs[arr2] = t;
    }
    private static int[] factoryRandomDigit(int n) {
        int[] arrs = new int[n];
        for (int i=0 ; i<n; i++){
            arrs[i] = (int) (Math.random()*n);
        }
        return arrs;
    }

}

用idea还是不太习惯，刚开始把swap方法写成如下这样，废了好一番功夫，才查出来错误

private static void swap(int arr1, int arr2) {
        int t = arr1;
        arr1 = arr2;
        arr2 = t;
    }