Python

LeetCode Solutions - Python3 Algorithm Challenges

This section of the Algorithmic-Thinking repo contains my solutions to LeetCode challenges solved using Python3 that have the algorithms tag.

Each solution is my final after multiple iterations to get a more streamlined and resource efficient code.

I will try to remember to edit each to explain the steps for later looking back.

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What You'll Find Here

• Python3 solutions to LeetCode problems.
  • One liners for each if possible.
• Clean, commented code with problem context in each file header.
• A focus on writing clean, readable Python.

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Structure

Each file follows a consistent header format:

# Source : <leetcode problem url>
# Author : Rose Martin
# Date   : YYYYMMDD
########################################
Description right from Leetcode
########################################
Commented solution code

Philosophy

I believe in:

• Writing code that is readable, not just functional
• Understanding the algorithm before reaching for the shortcut
• Understanding why a one-liner works, not just that it works
• Testing multiple approaches to know which tool fits best

Problems Solved

Problems Solved

#	Title	Difficulty	Final Solution	One Liner
1	Two Sum	Easy	TwoSum.py	-
2	Add Two Numbers	Medium	AddTwoNumbers.py	-
3	Longest Substring Without Repeating Characters	Medium	LongestSubstring.py	-
4	Median of Two Sorted Arrays	Hard	MedianTwoArrays.py	-
5	Longest Palindromic Substring	Medium	LongestPalindrome.py	-
6	Zigzag Conversion	Medium	ZigzagConversion.py	-
7	Reverse Integer	Medium	ReverseInteger.py	-
8	String to Integer (atoi)	Medium	Atoi.py	-
9	Palindrome Number	Easy	PalindromeNumber.py	-
10	Regular Expression Matching	Hard	RegexMatching.py	-

Built and maintained by Ebony Rose Martin https://thatone.dev