Zigzag Conversion

Zigzag Conversion

LeetCode Problem

• Problem Number: 6
• Problem Link: https://leetcode.com/problems/zigzag-conversion/
• Difficulty: Medium
• Topics: String

Problem Description

The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this:

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);

Examples

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), digits, and spaces.
• 1 <= numRows <= 1000