Java 数组排序：选择排序法

import java.util.Arrays;

public class JavaTest {
    public static void main (String args[]){        
        
        int a[] = {12,45,67,89,123,-45,67};
        System.out.println(Arrays.toString(a));
        int N = a.length;
        for(int i=0; i<N; i++) {
            for(int j=i+1;j<N;j++){
                if(a[j]<a[i]){
                    int t = a[j];
                    a[j] = a[i];
                    a[i] = t;
                }
                
            }
            
        }
        System.out.println(Arrays.toString(a));
    }
    

}