week7_黑板抽查题目，按从小到大排序

#include <stdio.h>void Print(int a[],int x){for(int i = 0; i < x; i++){printf("%d  ",a[i]);    }  printf("\n  ");}void Sort(int a[],int x){int i,j,k;for(i = 0; i < x; i++){for(j = i;j > 0; j--){if( a[j] < a[j-1] ){k=a[j];a[j]=a[j-1];a[j-1]=k;}}}}void main(){int a[5] = {3,5,7,1,9};Print(a,5);    Sort(a,5);   Print(a,5);}