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Life & fun · July 16, 2026

A modern learning tool for programming interviews & professional skills

Do you struggle connecting visual examples to abstract problems or concepts in computing and software? This tool is largely an exercise in pattern recognition and problem solving that develops critical interview and professional skills.

A modern learning tool for programming interviews & professional skills launched on July 16, 2026 with 5 votes, #4,557 of 24,623 launches that month and more than 75% of that year's launches.

Visit pqdsa.com ↗Alternativestop 19% of July 2026

What it does

Learn algorithms and practice the DSA patterns coding interviews actually ask about: two pointers, binary search, trees, heaps, backtracking and more. 506 problems in Python, JavaScript and C++, each with a step-by-step replay of how the solution runs. Three free, no account needed.

A data structure and algorithm practice site. Learn the algorithms and drill the patterns coding interviews actually ask about: two pointers, binary search, trees, heaps, graphs, dynamic programming, backtracking and more, across 506 practice problems. Every puzzle can be solved in Python or in JavaScript, and every solution comes with a step by step replay of how it runs. Every problem can be solved three ways: assembled from pieces, filled in from a skeleton, or typed from scratch against its tests, so the same problem works whether you are learning the pattern or rehearsing it under interview conditions. Three are free with no account. This site needs JavaScript to run the puzzles,…from pqdsa.com

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