选择排序

void SelectSort(int a[],int n){   int i,j,k,tmp;   for(i=0;i<n-1;i++)   {       k = i;       for(j=i+1;j<n;j++)       {           if(a[j] < a[k])           {               k = j;           }       }       if(k != i)       {           tmp = a[i];           a[i] = a[k];           a[k] = tmp;       }   }}