1031. Hello World for U (20)

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Given any string of N (>=5) characters, you are asked to form the characters into the shape of U. For example, "helloworld" can be printed as:

Input Specification:

Each input file contains one test case. Each case contains one string with no less than 5 and no more than 80 characters in a line. The string contains no white space.

Output Specification:

For each test case, print the input string in the shape of U as specified in the description.

lowor

//可以用char数组做，本人喜欢用string做，比较简单
#include <iostream>
#include <string>
using namespace std;

int main() {
    string str;
    int n, n1, n2, n3, i, j, start, end;
    while(cin>>str) {
        n = str.length();
        n1 = n3 = (n + 2)/3;
        n2 = n - n1 - n3 + 2;
        start = 0;
        end = n - 1;
        for(i = 0; i < n1; i++) {
            if(i == n1 - 1) {
                for(j=0; j<n2; j++) {
                    cout<<str[start++];
                }
            } else {
                cout<<str[start++];
                for(j=0; j<n2-2; j++) {
                    cout<<" ";
                }
                cout<<str[end--]<<endl;
            }
        }
    }
    return 0;
}

1031. Hello World for U (20)

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原文地址：http://blog.csdn.net/jason_wang1989/article/details/44040431