Wells Fargo

1 Serialize and Deserialize Binary Tree Hard 2 Kth Largest Element in an Array Medium 3 Subsets II Medium 4 Clone Graph Medium 5 Course Schedule II Medium 6 Network Delay Time Medium 7 House Robber II Medium 8 Longest Increasing Subsequence Medium 9 Interleaving String Medium 10 Jump Game Medium 11 Insert Interval Medium 12 Spiral Matrix Medium 13 Single Number Easy 14 Contains Duplicate Easy 15 Encode and Decode Strings Medium 16 Best Time to Buy and Sell Stock Easy 17 Min Stack Medium 18 Search a 2D Matrix Medium 19 Merge Two Sorted Lists Easy 20 LRU Cache Medium 21 Same Tree Easy 22 Kth Smallest Element in a BST Medium 23 Kth Largest Element in a Stream Easy 24 Subsets Medium 25 Letter Combinations of a Phone Number Medium 26 Rotting Oranges Medium 27 Word Ladder Hard 28 Climbing Stairs Easy 29 Coin Change Medium 30 Best Time to Buy and Sell Stock with Cooldown Medium