Leetcode

Go solutions to various leetcode problems.

Difficulty: 🟩 🟨 🟥

Arrays

🟩 1929. Concatenation of Array - solution - 21 Oct 2025
🟩 242. Valid Anagram - solution - 21 Oct 2025
🟩 344. Reverse String - solution - 23 Oct 2025
🟨 238. Product of Array Except Self - solution - 22 Oct 2025

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Maps

🟩 1. Two Sum - solution - 21 Oct 2025
🟩 217. Contains Duplicate - solution - 21 Oct 2025
🟩 169. Majority Element - solution - 22 Oct 2025
🟩 409. Longest Palindrome - solution 1, solution 2 - 25 Oct 2025
🟨 49. Group Anagrams - solution - 22 Oct 2025
🟨 314. Binary Tree Vertical Order Traversal - solution - 23 Oct 2025

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Strings

🟩 14. Longest Common Prefix - solution - 22 Oct 2025

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Matrix

🟩 463. Island Perimeter - solution - 21 Oct 2025
🟨 2125. Number of Laser Beams in a Bank - solution - 27 Oct 2025; daily challenge

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DFS

🟩 733. Flood Fill - solution - 21 Oct 2025
🟨 200. Number of Islands - solution - 21 Oct 2025

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BFS

🟩 733. Flood Fill - solution - 21 Oct 2025
🟨 200. Number of Islands - solution - 21 Oct 2025
🟨 286. Walls and Gates - solution - 21 Oct 2025
🟨 994. Rotting Oranges - solution - 21 Oct 2025

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Heap

🟩 506. Relative Ranks - solution - 20 Oct 2025
🟩 1046. Last Stone Weight - solution - 20 Oct 2025
🟩 1086. High Five - solution - 20 Oct 2025

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Tree

🟩 94. Binary Tree Inorder Traversal - solution - 22 Oct 2025
🟩 144. Binary Tree Preorder Traversal - solution - 22 Oct 2025
🟩 145. Binary Tree Postorder Traversal - solution - 22 Oct 2025
🟩 100. Same Tree - solution - 22 Oct 2025
🟩 104. Maximum Depth of Binary Tree - solution - 23 Oct 2025
🟩 404. Sum of Left Leaves - solution - 23 Oct 2025 🟩 559. Maximum Depth of N-ary Tree - solution - 27 Oct 2025 🟨 314. Binary Tree Vertical Order Traversal - solution - 23 Oct 2025

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Stacks

🟩 20. Valid Parentheses - solution - 24 Oct 2025
🟩 682. Baseball Game - solution - 24 Oct 2025
🟩 844. Backspace String Compare - solution - 24 Oct 2025
🟩 3174. Clear Digits - solution - 25 Oct 2025

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Math

🟩 1716. Calculate Money in Leetcode Bank - solution - 25 Oct 2025; daily challenge

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Sorting

🟩 561. Array Partition - solution - 25 Oct 2025;

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Design

🟨 2043. Simple Bank System - solution - 26 Oct 2025; daily challenge

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Prefix Sum

🟩 1480. Running Sum of 1d Array - solution - 28 Oct 2025
🟩 724. Find Pivot Index - solution - 28 Oct 2025
🟩 303. Range Sum Query - Immutable - solution - 29 Oct 2025
🟩 2574. Left and Right Sum Differences - solution - 29 Oct 2025
🟩 2848. Points That Intersect With Cars - solution - 29 Oct 2025