Technical Blog
I document solution strategies, implementation patterns, and lessons from coding problems so I can build a reliable interview and engineering knowledge base.
May 15, 2026 · 3 min read
A concise walkthrough for Univalued Binary Tree with clear approach, complexity, and multi-language implementation templates.
May 14, 2026 · 3 min read
A concise walkthrough for Brace Expansion II with clear approach, complexity, and multi-language implementation templates.
May 13, 2026 · 3 min read
A concise walkthrough for Apply Transform Over Each Element in Array with clear approach, complexity, and multi-language implementation templates.
May 12, 2026 · 3 min read
A concise walkthrough for Rotate Function with clear approach, complexity, and multi-language implementation templates.
May 09, 2026 · 3 min read
A concise walkthrough for Number Complement with clear approach, complexity, and multi-language implementation templates.
May 06, 2026 · 3 min read
A concise walkthrough for Weighted Word Mapping with clear approach, complexity, and multi-language implementation templates.
May 05, 2026 · 3 min read
A concise walkthrough for Burst Balloons with clear approach, complexity, and multi-language implementation templates.
May 04, 2026 · 3 min read
A concise walkthrough for Smallest Range Covering Elements from K Lists with clear approach, complexity, and multi-language implementation templates.
May 03, 2026 · 3 min read
A concise walkthrough for Total Cost to Hire K Workers with clear approach, complexity, and multi-language implementation templates.
Apr 29, 2026 · 3 min read
A concise walkthrough for Check if Number Has Equal Digit Count and Digit Value with clear approach, complexity, and multi-language implementation templates.
Apr 28, 2026 · 3 min read
A concise walkthrough for Closest Divisors with clear approach, complexity, and multi-language implementation templates.
Apr 25, 2026 · 3 min read
A concise walkthrough for Merge Two 2D Arrays by Summing Values with clear approach, complexity, and multi-language implementation templates.
Apr 24, 2026 · 3 min read
A concise walkthrough for Valid Mountain Array with clear approach, complexity, and multi-language implementation templates.
Apr 23, 2026 · 3 min read
A concise walkthrough for Sum of Left Leaves with clear approach, complexity, and multi-language implementation templates.
Apr 22, 2026 · 3 min read
A concise walkthrough for Calculator with Method Chaining with clear approach, complexity, and multi-language implementation templates.
Apr 19, 2026 · 3 min read
A concise walkthrough for Minimum Number of Removals to Make Mountain Array with clear approach, complexity, and multi-language implementation templates.
Apr 16, 2026 · 3 min read
A concise walkthrough for Count of Matches in Tournament with clear approach, complexity, and multi-language implementation templates.
Apr 15, 2026 · 3 min read
A concise walkthrough for Substring Matching Pattern with clear approach, complexity, and multi-language implementation templates.
Apr 14, 2026 · 3 min read
A concise walkthrough for Number of Submatrices That Sum to Target with clear approach, complexity, and multi-language implementation templates.
Apr 13, 2026 · 3 min read
A concise walkthrough for Longer Contiguous Segments of Ones than Zeros with clear approach, complexity, and multi-language implementation templates.
Apr 10, 2026 · 3 min read
A concise walkthrough for Zero Array Transformation III with clear approach, complexity, and multi-language implementation templates.
Apr 07, 2026 · 3 min read
A concise walkthrough for Remove Zero Sum Consecutive Nodes from Linked List with clear approach, complexity, and multi-language implementation templates.
Apr 06, 2026 · 3 min read
A concise walkthrough for Decode the Slanted Ciphertext with clear approach, complexity, and multi-language implementation templates.
Apr 05, 2026 · 3 min read
A concise walkthrough for Minimum Depth of Binary Tree with clear approach, complexity, and multi-language implementation templates.
Apr 04, 2026 · 3 min read
A concise walkthrough for IPO with clear approach, complexity, and multi-language implementation templates.
Apr 01, 2026 · 3 min read
A concise walkthrough for Minimum Cost to Make Two Binary Strings Equal with clear approach, complexity, and multi-language implementation templates.
Mar 30, 2026 · 4 min read
A practical walkthrough of how I use a hash map for Two Sum, including edge-case checks and why one-pass lookup is enough.
Mar 30, 2026 · 3 min read
A concise walkthrough for Reduction Operations to Make the Array Elements Equal with clear approach, complexity, and multi-language implementation templates.
Mar 30, 2026 · 3 min read
A concise walkthrough for Longest Palindromic Subsequence with clear approach, complexity, and multi-language implementation templates.
Mar 28, 2026 · 5 min read
How I approach bracket-matching problems with a stack, and the exact checks that avoid false positives.
Mar 25, 2026 · 6 min read
A reusable binary search template for boundary problems, with loop invariants and off-by-one safety tips.