0019-remove-nth-node-from-end-of-list.py 0020-valid-parentheses.py 0021-merge-two-sorted-lists.py 0022-generate-parentheses.py 0023-merge-k-sorted-lists.py 0024-swap-nodes-in-pairs.py 0025-reverse-nodes-in-k-group.py 0026-remove-duplicates-from-sorted-array.py 0027...
0434-Number of-Segments-in-a-String 0435-Non-overlapping-Intervals 0437-Path-Sum-III 0438-Find-All-Anagrams-in-a-String 0443-String-Compression 0447-Number-of-Boomerangs 0450-Delete-Node-in-a-BST 0451-Sort-Characters-By-Frequency 0454-4Sum-II 0455-Assign-Cookies 0458-Poor-Pigs...
## [98. Validate Binary Search Tree 3行](https://leetcode.com/problems/validate-binary-search-tree/) ```python # Definition for a binary tree node. # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None ...
#define BST_MAX_LEVEL 800 struct TreeNode { int val; @@ -29,9 +28,9 @@ static void bfs(struct TreeNode *root, int **results, int *count, int *col_sizes /** ** Return an array of arrays of size *returnSize. ** The sizes of the arrays are returned as *returnColumnSizes arra...
0434-Number of-Segments-in-a-String 0435-Non-overlapping-Intervals 0437-Path-Sum-III 0438-Find-All-Anagrams-in-a-String 0443-String-Compression 0447-Number-of-Boomerangs 0450-Delete-Node-in-a-BST 0451-Sort-Characters-By-Frequency 0454-4Sum-II 0455-Assign-Cookies 0458-Poor-...