#algorithm

CPOS

sohamaggarwal

Capture Codeforces, CSES & AtCoder problems, run sample tests, and submit — all from VS Code.

Cf - CodeForces Solver

Wiroxa

The ultimate competitive programming extension for VS Code. Practice, compile, and submit to Codeforces and CSES directly from your editor.

CP Runner

Shawal

A blazing-fast Competitive Programming test case runner for VS Code.

Complexity Lens

afzaalshoukat

Inline Big-O time & space complexity estimates via static AST analysis. No data leaves your machine.

LiveComplexity: Real-time Big-O Analysis

livecomplexity

Real-time AST-based Big-O time complexity analysis for C++ with inline editor annotations and hover explanations.

DSA Flow Visualizer

chandan2612

Visualize Dart console DSA programs with automatic flow tracing, variables, stack, and graph playback.

LeetCode with Auth Sync

wilmtang

Unofficial VS Code extension for solving LeetCode problems with browser auth sync; not affiliated with LeetCode

APEX Analyzer

Malak-TH-Studio

APEX Analyzer is a VS Code extension that analyzes Python functions to estimate time and space complexity, detect algorithm patterns, and provide optimization insights directly inside the editor.

Debugger for LeetCode

bindsi

Browse, fetch, debug and submit LeetCode problems in C#, Go, Python and Rust — with real breakpoint debugging, no premium required.