2019 May algorithm practice

2019 - May 
May 11 
10. Regular Expression Matching C# one practice brought me back sweet story of practice in 2018
399. Evaluate Division Ask advice from the author - Amazon Senior SDE
399. Evaluate Division learn from C# code written in 2017
785 Is graph bipartite union find algorithm
785 Is graph bipartite depth first search algorithm
91. Decode Ways Code written in 2019
1037. Valid Boomerang 34 minutes for an easy algorithm
1038. Binary Search Tree to Greater Sum Tree how two small mistakes drag down my performance from 10 minutes to 50 minutes
1042. Flower Planting With No Adjacent code written in weekly contest
May 6 - 11
235. Lowest Common Ancestor of a Binary Tree binary search in BST
236. Lowest Common Ancestor of a Binary Search Tree time out using string, need help
236. Lowest Common Ancestor of a Binary Search Tree time out using list, need help
236. Lowest Common Ancestor of a Binary Search Tree optimal solution bottom up with reasoning
236. Lowest Common Ancestor of a Binary Search Tree various topics covered through 2019 practice
May 14 
146. LRU Cache May 2019 pass 12/ 18 test cases
May 24 
329. Longest Increasing Path in a Matrix C# depth first search and memoization classical algorithm
May 27 
241 Different Ways To Add Parentheses practice in 2019 May - a Google interview algorithm
124. Binary Tree Maximum Path Sum 2019 May practice