#leetcode

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nbfuhao

10y

[LeetCode] Maximum Depth of Binary Tree in Objective C

[LeetCode] Maximum Depth of Binary Tree in Objective C

LeetCode: Maximum Depth of Binary Tree in Objective C typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; - (int)maximumDepth:(TreeNode *)node { if (!node) return 0;

$ 0.000

33

nbfuhao

10y

[LeetCode] Binary Tree Level Order Traversal in Objective C

[LeetCode] Binary Tree Level Order Traversal in Objective C

typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; -(NSMutableArray *)levelOrder:(TreeNode *)treeNode { NSMutableArray *levelOrderArray = [NSMutableArray array]; if

$ 0.000

36

nbfuhao

10y

[LeetCode] Binary Tree Preorder Traversal in Objective C

[LeetCode] Binary Tree Preorder Traversal in Objective C

// typedef struct { // int value; // struct TreeNode *left; // struct TreeNode *right; // } TreeNode; -(NSMutableArray *)preorderTraversal:(TreeNode *)treeNode { NSMutableArray *preorderArray = [NSMutableArray