LeetCode Record

Ctrlk

DFS / Backtracking

236. Lowest Common Ancestor of a Binary Tree 572 subtree of another tree 987 verticle order traversal of a binary tree 863 All nodes in distance k in binary tree 😳1110 Delete nodes and return forest 341 flatten nested list iterator 😬394 decode string 51 N queens 🥺291 word pattern II 126 word ladder II 93 restore ip address 22 generate parenthesis 856 score of parentheses 🙃301 remove invalid parentheses 🤯37 solve sudoku 😁212 word search II 1087 brace expansion 399 Evaluate Division 1274 numbers of ships in a rectangle 1376 Time Needed to Inform All Employees 694 number of distinct islands 🙁Palindrome partitioning 39 combination sum 40 combination sum II 216 combination sum III 😕377 combination sum IV 90 subsets II 😁47 permutation II 😑698. Partition to K Equal Sum Subsets 😀403 frog jump （记忆化搜索）☹️longest increasing path in matrix 437 path sum III

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