LeetCode 6: Zigzag Conversion | Python Solution | String Manipulation

Published: 19 June 2025
on channel: Code Scribbler

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Solve the classic zigzag pattern conversion problem where strings are arranged in a zigzag pattern and read line by line. #stringmanipulation #leetcode #pythonsolution

*Time Complexity:* O(n) where n is the length of the input string
*Space Complexity:* O(n) for storing the converted string

⏱️ Timestamps
00:00 - Understanding problem statement
01:08 - Using Array Manipulation
03:45 - Big O Notation Calculated
04:11 - Using String Manipulation + Math
08:29 - Optimized solution - Big O Notation
08:55 - Python code walk-through
10:02 - Solution analysis - runtime + memory

🔑 Key Concepts
String manipulation
Array operations
Pattern recognition
Simulation technique

💡 Learning Points
How to break down complex pattern problems
Efficient string building in Python
Row-by-row simulation approach
Avoiding unnecessary data structures

🔄 Related Problems
LeetCode 8: String to Integer (atoi)
LeetCode 38: Count and Say
LeetCode 151: Reverse Words in a String
LeetCode 1769: Minimum Number of Operations to Move All Balls to Each Box

👥 Target Audience
This video is for software engineers preparing for coding interviews and Python developers interested in string manipulation problems.

📚 Prerequisites
Basic Python syntax
Understanding of string operations
Familiarity with arrays/lists

🔗 Links
LeetCode Problem: https://leetcode.com/problems/zigzag-...
Solution Code: https://leetcode.com/problems/zigzag-...

🌟 Additional Tips
Focus on pattern recognition rather than mathematical formulas
Practice drawing out the zigzag pattern to visualize the solution
Remember to handle edge cases where numRows = 1 or string length is small

🔔 Call to Action
If you found this solution helpful, please like and subscribe for more coding interview preparation content! Share your alternative approaches or questions in the comments below. #codinginterviews #pythontutorials #leetcodesolutions

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