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

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Mar 16, 2026

[Medium] 2406. Divide Intervals Into Minimum Number of Groups

leetcodemediumintervalheapsweep-line

Mar 15, 2026

[Medium] 433. Minimum Genetic Mutation

leetcodemediumgraphbfs

Mar 14, 2026

[Medium] 365. Water and Jug Problem

leetcodemediummathnumber-theory

Mar 12, 2026

[Medium] 841. Keys and Rooms

leetcodemediumgraphdfsbfs

Mar 12, 2026

[Medium] 797. All Paths From Source to Target

leetcodemediumgraphdfsbacktracking

Mar 11, 2026

[Medium] 1091. Shortest Path in Binary Matrix

leetcodemediumgraphbfs

Mar 10, 2026

[Medium] 1319. Number of Operations to Make Network Connected

leetcodemediumgraphunion-find

Mar 10, 2026

[Easy] 876. Middle of the Linked List

leetcodeeasylinked-listtwo-pointers

Mar 9, 2026

[Medium] 1202. Smallest String With Swaps

leetcodemediumstringunion-findgraph

Mar 8, 2026

[Medium] 1584. Min Cost to Connect All Points

leetcodemediumgraphmstunion-find

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