Zigzag Conversion

Write the characters of a string in a zigzag pattern across numRows, then read the rows in order to produce the converted string.

Examples
Input: ["PAYPALISHIRING",3]
Output: "PAHNAPLSIIGYIR"
Hints

Zigzag Conversion

Write the characters of a string in a zigzag pattern across numRows, then read the rows in order to produce the converted string.