(Java学习笔记5.2)选择排序

--选择排序public class SelectionSort {public static void sort(long[] arr){int k=0;long tmp=0;for(int i=0;i<arr.length-1;i++){k=i;//令K指向最小的数for(int j=i;j<arr.length;j++){if(arr[j]<arr[k]){k=j;}}tmp=arr[i];arr[i]=arr[k];arr[k]=tmp;}}}public class TestSort {public static void main(String[] args){long[] arr=new long[5];arr[0]=34;arr[1]=23;arr[2]=2;arr[3]=22;System.out.print("[");for(long num:arr){System.out.print(num+" ");}System.out.print("]");System.out.println();//[34 23 2 22 0]SelectionSort.sort(arr);//[0 22 2 23 34]System.out.print("[");for(long num:arr){System.out.print(num+" ");}System.out.print("]");System.out.println();}}