HDU 1200 To and Fro

HDU 1200 To and Fro"/>

HDU 1200 To and Fro

题目地址：点击打开链接

思路：水题

AC代码：

#include <iostream>
#include <cstring>char a[110][21],str[210];using namespace std;int main()
{int n,i,j,k;while(cin>>n && n){k = 0;cin>>str;for(i=0; i<strlen(str)/n; i++){for(j=0; j<n; j++){if(i % 2 == 0)//把j循环放到if里面效率更高，省得每次判断a[i][j] = str[k++];elsea[i][n-1-j] = str[k++];}}for(i=0; i<n; i++){for(j=0; j<strlen(str)/n; j++){cout<<a[j][i];}}cout<<endl;}return 0;
}