LTIMindtree

1 Merge k Sorted Lists Hard 2 Subtree of Another Tree Easy 3 Construct Binary Tree from Preorder and Inorder Traversal Medium 4 Last Stone Weight Easy 5 Combination Sum Medium 6 N-Queens Hard 7 Walls and Gates Medium 8 Reconstruct Itinerary Hard 9 Min Cost Climbing Stairs Easy 10 Maximum Product Subarray Medium 11 Coin Change 2 Medium 12 Regular Expression Matching Hard 13 Partition Labels Medium 14 Minimum Interval to Include Each Query Hard 15 Multiply Strings Medium 16 Sum of Two Integers Medium 17 Product of Array Except Self Medium 18 Container With Most Water Medium 19 Sliding Window Maximum Hard 20 Largest Rectangle in Histogram Hard 21 Median of Two Sorted Arrays Hard 22 Linked List Cycle Easy 23 Diameter of Binary Tree Easy 24 Count Good Nodes in Binary Tree Medium 25 Design Add and Search Words Data Structure Medium 26 Design Twitter Medium 27 Word Search Medium 28 Pacific Atlantic Water Flow Medium 29 Number of Connected Components in an Undirected Graph Medium 30 Alien Dictionary Hard