Robina Li

Welcome to My Technical Blog

Exploring algorithms, data structures, and software engineering insights through LeetCode solutions in Python.
NOTE: This blog is still under construction and some python code blocks may not be rendered correctly when converted from C++ with AI.

169+ Problems Solved

3 Difficulty Levels

20+ Categories

[Medium] 1962. Remove Stones to Minimize the Total

leetcodemediumarraygreedyheap

Apr 21, 2026

[Medium] 2952. Minimum Number of Coins to be Added

leetcodemediumarraygreedysorting

Apr 21, 2026

[Medium] 2592. Maximize Greatness of an Array

leetcodemediumarraygreedysorting

Apr 20, 2026

[Medium] 2571. Minimum Operations to Reduce an Integer to 0

leetcodemediummathgreedybit-manipulation

Apr 19, 2026

[Medium] 2539. Count the Number of Good Subsequences

leetcodemediumstringcombinatoricsmathhash-map

Apr 18, 2026

[Medium] 329. Longest Increasing Path in a Matrix

leetcodemediummatrixdynamic-programmingdfs

All Posts

Mar 26, 2026

[Medium] 1087. Brace Expansion

leetcodemediumbacktrackingstring

Mar 25, 2026

[Medium] 918. Maximum Sum Circular Subarray

leetcodemediumarraykadane

Mar 24, 2026

[Medium] 341. Flatten Nested List Iterator

leetcodemediumstackiteratordesign

Mar 23, 2026

[Medium] 931. Minimum Falling Path Sum

leetcodemediumdpmatrix

Mar 22, 2026

[Medium] 134. Gas Station

leetcodemediumgreedyarray

Mar 21, 2026

[Medium] 713. Subarray Product Less Than K

leetcodemediumarraysliding-window

Mar 20, 2026

[Medium] 309. Best Time to Buy and Sell Stock with Cooldown

leetcodemediumdpstock

Mar 19, 2026

[Medium] 362. Design Hit Counter

leetcodemediumdesignqueuesliding-window

Mar 18, 2026

[Medium] 1448. Count Good Nodes in Binary Tree

leetcodemediumtreedfsbfs

Mar 17, 2026

[Medium] 1376. Time Needed to Inform All Employees

leetcodemediumtreegraphdfsbfs

Welcome to My Technical Blog

Latest Posts

All Posts