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   NA P L S I I GY   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".

 

代码：z字形遍历二维数组。

class Solution {public:    string convert(string s, int nRows)     {         if(s.empty()||nRows==1) return s;         string res;          char a[1000][1000];         memset(a,0,sizeof(a));         int i=0,j=0,q=0;         int j_time=0;         int len=s.size();         while (i