2021刷题打卡

6/25/21

1038. Binary Search Tree to Greater Sum Tree

6/26/21

236. Lowest Common Ancestor of a Binary Tree
1644. Lowest Common Ancestor of a Binary Tree II
1650. Lowest Common Ancestor of a Binary Tree III
1676. Lowest Common Ancestor of a Binary Tree IV
1913. Maximum Product Difference Between Two Pairs
102. Binary Tree Level Order Traversal
107. Binary Tree Level Order Traversal II

7/10/21

1086. High Five, PriorityQueue or Arrays.sort()
1002. Find Common Characters
1436. Destination City
290. Word Pattern

7/12

500. Keyboard Row
389. Find the Difference

7/14

261. Graph Valid Tree

7/15

127. Word Ladder
752. Open the Lock
773. Sliding Puzzle
207. Course Schedule
210. Course Schedule II
1730. Shortest Path to Get Food
433. Minimum Genetic Mutation
116. Populating Next Right Pointers in Each Node

这些题是怎么选的

8/7/21

1249. Minimum Remove to Make Valid Parentheses
953. Verifying an Alien Dictionary

8/8/21

415. Add Strings

10/1/21

1448. Count Good Nodes in Binary Tree
426. Convert Binary Search Tree to Sorted Doubly Linked List
1822. Sign of the Product of an Array
1480. Running Sum of 1d Array
1512. Number of Good Pairs

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10/4/21

1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
654. Maximum Binary Tree
1305. All Elements in Two Binary Search Trees
1382. Balance a Binary Search Tree
814. Binary Tree Pruning