leetcode

0 class Solution {

1 public:

2 string decodeCiphertext(const string &encodedText, int rows) const {

3 const int col = size(encodedText) / rows;

4 string res;

5

6 for (int i = 0; i < col; i++) {

7 for (int j = i; j < size(encodedText); j += (col + 1)) {

8 res += encodedText[j];

9 }

10 }

11

12 while (!res.empty() && res.back() == ' ')

13 res.pop_back();

14

15 return res;

16 }

17 };