1031 Hello World for U (20分)

Posted 2020-11-24 57one

Given any string of N (≥) 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 n?1?? characters, then left to right along the bottom line with n?2?? characters, and finally bottom-up along the vertical line with n?3?? characters. And more, we would like U to be as squared as possible -- that is, it must be satisfied that n?1??=n?3??=max { k | k≤n?2?? for all 3 } with n?1??+n?2??+n?3??−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   d
l   l
lowor

测试点5没过

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include <climits>
 3 #include<iostream>
 4 #include<vector>
 5 #include<queue>
 6 #include<stack>
 7 #include<algorithm>
 8 #include<string>
 9 #include<cmath>
10 using namespace std;
11 void printBlock(int n)
12 {
13     while (n--)
14         cout << " ";
15 }
16 int main()
17 {
18     string s;
19     cin >> s;
20     int N = s.length() - 2;
21     int n1=0, n2=0;
22     int flag = 0;
23     for (n2 = 3; n2 <= N; n2++)
24     {
25         for (n1=0;n1 <= n2; n1++)
26             if (2 * n1 + n2 == s.length())
27             {
28                 flag = 1;
29                 break;
30             }
31         if (flag)
32             break;
33     }
34     for (int i = 0; i < n1; i++)
35     {
36         cout << s[i];
37         printBlock(n2 - 2);
38         cout << s[s.length() - i - 1] << endl;
39     }
40     cout << s.substr(n1, n2);
41     return 0;
42 }

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