#include<stdio.h>void selectSort(int a[],int length);void main(){      int i;    float start=0,finish=0;    int a[10]={10,15,4,2,5,3,6,9,7,1};    printf("排序前：\n");    for(i=0;i<10;i++)      printf("%d ",a[i]);    printf("\n排序后：\n");    selectSort(a,10);   } void selectSort(int a[],int length) {   int i,j,temp;   for(i=0;i<length-1;i++)       for(j=i+1;j<length;j++)       {           if(a[i]>a[j])           {               temp=a[i];               a[i]=a[j];               a[j]=temp;           }    }       for(i=0;i<length;i++)           printf("%d ",a[i]);       printf("\n"); }