🚀 2-Week DSA Comeback & Revision Plan Goal: Regain momentum, strengthen weak areas (Trees, Graphs, Heaps, Intervals), and build DP foundation. Day Focus Area Problem 1 (Weak Area) Problem 2 (DP) Problem 3 (Revision) Day 1 Trees Balanced Binary Tree Climbing Stairs Valid Palindrome Day 2 Graphs Flood Fill Unique Paths Two Sum Day 3 Heaps Top K Frequent Elements Minimum Path Sum Binary Search Day 4 Intervals Meeting Rooms House Robber Merge Intervals Day 5 Trees Diameter of Binary Tree House Robber II Max Depth of Binary Tree Day 6 Graphs Course Schedule Triangle Number of Islands Day 7 Heaps Kth Largest Element Maximum Subarray K Closest Points Day 8 Intervals Insert Interval Unique Paths II Non-overlapping Intervals Day 9 Trees Level Order Traversal LIS Invert Binary Tree Day 10 Graphs Rotting Oranges Coin Change Clone Graph Day 11 Heaps Median Finder LCS Top K Frequent Day 12 ...
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