HCLTech

1 Sliding Window Maximum Hard 2 Largest Rectangle in Histogram Hard 3 Median of Two Sorted Arrays Hard 4 Linked List Cycle Easy 5 Diameter of Binary Tree Easy 6 Count Good Nodes in Binary Tree Medium 7 Design Add and Search Words Data Structure Medium 8 Design Twitter Medium 9 Word Search Medium 10 Pacific Atlantic Water Flow Medium 11 Number of Connected Components in an Undirected Graph Medium 12 Alien Dictionary Hard 13 Palindromic Substrings Medium 14 Unique Paths Medium 15 Distinct Subsequences Hard 16 Gas Station Medium 17 Non-overlapping Intervals Medium 18 Happy Number Easy 19 Counting Bits Easy 20 Two Sum Easy 21 Valid Palindrome Easy 22 Longest Repeating Character Replacement Medium 23 Generate Parentheses Medium 24 Find Minimum in Rotated Sorted Array Medium 25 Remove Nth Node From End of List Medium 26 Reverse Nodes in k-Group Hard 27 Lowest Common Ancestor of a Binary Search Tree Medium 28 Binary Tree Maximum Path Sum Hard 29 K Closest Points to Origin Medium 30 Permutations Medium