1031. Hello World for U (20)
时间限制
400 ms
内存限制
65536 kB
代码长度限制
16000 B
判题程序
Standard
作者
CHEN, Yue
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  de  ll  rlowo
That is, the characters must be printed in the original order, starting top-down from the left vertical line with n1characters, 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.
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.
Sample Input:
helloworld!
Sample Output:
h   !e   dl   llowor
对于一个字符串，把它尽量的弄成正方形的u；题目中的n1和n3为左右数量包括最后一行的头尾，n2为最后一行的数量。所以n1+n2+n3=N-2；
代码中的left_1=n1-1=(len-1)/3这里减一是为了不数最后一行的头;wordspacing=n2-2一行空格数；
#include<string> 字符串处理 用到substr（起始位置的标号，要输出的个数）；
比如 HelloWorld="12345";HelloWorld.substr(1, 3)那么输出从HelloWorld[1]开始向后输出3个为234；
N>=5
1.
12345
得
1 5
234
2.
123456
得
1  6
2345
3.
1234567
得
1 7
2 6
345 

评测结果
时间结果得分题目语言用时(ms)内存(kB)用户8月02日 09:17答案正确201031C++ (g++ 4.7.2)1308datrilla
测试点
测试点结果用时(ms)内存(kB)得分/满分0答案正确12568/81答案正确13082/22答案正确11802/23答案正确13082/24答案正确13042/25答案正确13082/26答案正确11802/2

#include<iostream>   #include<string>using namespace std;  void worldspace(int size){  for (int index = 0; index < size; index++)    cout << " ";}int main(){     string HelloWorld;  int left_1, len,index,wordspacing;  cin >> HelloWorld;  len = HelloWorld.size();  left_1 = (len -1)/ 3;  wordspacing = len - 2 * left_1 - 2;  for (index = 0; index < left_1; index++)  {    cout << HelloWorld[index];    worldspace(wordspacing);    cout << HelloWorld[len - 1 - index] << endl;;  }  cout << HelloWorld.substr(left_1, wordspacing+2) << endl;  system("pause");  return 0;}