Leetcode: ZigZag Conversion - c++编程基础

The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility)

P A H N

A P L S I I G

Y I R

And then read line by line: "PAHNAPLSIIGYIR"

Write the code that will take a string and make this conversion given a number of rows:

string convert(string text, int nRows);

convert("PAYPALISHIRING", 3) should return "PAHNAPLSIIGYIR".

string convert(string s, int nRows) {  
        // Start typing your C/




C++ solution below  
        // DO NOT write int main() function      
        if(s == "")return s;  
        vector> matrix;  
        for(int i = 0; i< nRows; ++i)  
        {  
            vector tmp;  
            matrix.push_back(tmp);  
        }  
        int length = s.length();  
        int i = 0;  
        while(i  0 && i