C语言 · 交换Easy

 1 #include<stdio.h>
 2 #define max 1000
 3 int a[max];
 4 int n,m;
 5 void change(int x,int y){
 6     int temp = a[x-1];
 7     a[x-1] = a[y-1];
 8     a[y-1] = temp;
 9 }
10 int main(){
11     scanf("%d%d",&n,&m);
12     int x,y;
13     for(int i=0;i<n;i++){
14         scanf("%d",&a[i]);
15     }
16     while(m--){
17         scanf("%d%d",&x,&y);
18         change(x,y);
19     }
20     for(int i=0;i<n;i++){
21         printf("%d\n",a[i]);
22     }
23     return 0;
24 }