Zigzag Conversion

Problem statement:

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 s, int numRows);

Example 1:

Input: s = "PAYPALISHIRING ", numRows = 3
Output: "PAHNAPLSIIGYIR "

Example 2:

Input: s = "PAYPALISHIRING ", numRows = 4
Output: "PINALSIGYAHRPI "
Explanation:
P I N
A L S I G
Y A H R
P I

Example 3:

Input: s = "A ", numRows = 1
Output: "A "

Constraints:

* 1 <= s.length <= 1000
* s consists of English letters (lower-case and upper-case), ',' and '.'.
* 1 <= numRows <= 1000

Complete Solution at https://www.freecodecompiler.com.