Practice
10 new coding challenges
Ten new multi-level coding challenges - Basic Calculator, LRU Cache, Merge Intervals Family, Lowest Common Ancestor Family, Binary Tree Vertical Order, Valid Palindrome With Deletions, Weighted Random Pick, Nested List Weights, Kth Largest Element, and Dasher Payout Engine.
17 new DSA practice questions
Seventeen new LeetCode-style practice questions across the DSA core concepts - arrays, binary search, bit manipulation, DFS, dynamic programming, graphs, greedy, hash maps, queues, recursion, sorting, trees, and union find - each with labeled examples, constraints, and a Solution Breakdown.
DSA pages aligned - canonical examples and Solution Breakdown
Every DSA core concept page now follows one structure - standalone canonical example pages, LeetCode-style problem formatting with labeled examples and constraints, a renamed Solution Breakdown section, and difficulty-ordered question sets.
