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Lessons (5)

• Two Pointers & Sliding Window

  … Learn them with animated-style diagrams and classic interview examples. Two Pointers The big idea Two people searching …

• Linked Lists

  … Fast & slow pointers (tortoise and hare) Two pointers move through the list: slow moves 1 step, fast moves …

• DSA Interview Patterns Cheat Sheet

  … in sorted'?} A -- yes BS[Binary search / Two pointers] A -- no B{Contiguous subarray<br/ or substring?} B …

• Arrays & Strings

  … In-place reversal with two pointers js function reverse(arr) { let left = 0, right = arr.length - 1; while …

• Backend Languages: Node.js, Go, Python & Rust

  … no garbage collector, no null pointer crashes. Popular frameworks Language Minimal Batteries included --- --- --- Node.js Express, Fastify, Hono …