九度OnlineJudge之1464：Hello World for U

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:

h    d
e     l
l      r
lowo

That is, the characters must be printed in the original order, starting top-down from the left vertical line with n1 characters, then left to right along the bottom line with n2 characters, and finally bottom-up along the vertical line with n3 characters. And more, we would like U to be as squared as possible -- that is, it must be satisfied that n1 = n3 = max { k| k <= n2 for all 3 <= n2 <= N } with n1 + n2 + n3 - 2 = N.

输入：

There are multiple test cases.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.

输出：

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

样例输入：

helloworld!ac.jobdu.com

样例输出：

h   !e   dl   llowora    mc    o.    cjobdu.

#include <iostream>#include <string>#include <string.h> using namespace std;   int main(){    char str[81];    while(cin>>str)    {       int len = strlen(str);    int x = (len+2)/3;      for (int i=0;i<x-1;i++)     {           cout<<str[i];    for (int j=x-1;j<(len-1-x);j++)           cout<<" ";           cout<<str[len-1-i];           cout<<endl;       }       for (int j=x-1;j<(len-1-(x-2));j++)           cout<<str[j];        cout<<endl;     }     //system("pause");    return 0;}