Give a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path from root node down to the nearest leaf node. Solution 1. Recursion 1publicclassMinDepthBt {2publicintgetMinDepth(TreeNode root) {3returnhelper(root, 0);4}5privateinthelper(TreeN...
Maximum Depth of Binary Tree Minimum Height Trees 参考资料: https://leetcode.com/problems/find-leaves-of-binary-tree/ https://leetcode.com/problems/find-leaves-of-binary-tree/discuss/83773/1-ms-Easy-understand-Java-Solution https://leetcode.com/problems/find-leaves-of-binary-tree/discuss/1916...
res.get(depth - 1).add(root.val);return depth; } } 这道题目题解和199. Binary Tree Right Side View 很相似。巧妙的使用 list size 和 depth or height 的关系。// 199. Binary Tree Right Side View 题解 class Solution { public List<Integer> rightSideView(TreeNode root) { List<Integer> ...
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Given therootof a binary search tree (BST) with duplicates, returnall themode(s)(i.e., the most frequently occurred element) in it. If the tree has more than one mode, return them inany order. Assume a BST is defined as follows: ...
4. Rebuild the Binary Tree 题目: 输入某二叉树的前序遍历和中序遍历的结果,请重建出该二叉树。假设输入的前序遍历和中序遍历的结果中都不含重复的数字。例如输 入前序遍历序列 {1,2,4,7,3,5,6,8} 和中序遍历序列 {4,7,2,1,5,3,8,6},则重建二叉树并返回。
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FindTabBarSize FindBorderBarSize Given therootof a binary tree, return the leftmost value in the last row of the tree. Example 1: Input:root = [2,1,3]Output:1 Example 2: Input:root = [1,2,3,4,null,5,6,null,null,7]Output:7...
publicstaticintfindDepth(int[]parent,inti) { // A root node will have a depth of 0 if(parent[i]==-1){ return0; } // depth of the i'th node = 1 + depth of its parent return1+findDepth(parent,parent[i]); } // Function to calculate the height of a binary tree represented ...
Total binary trees are 5 Preorder traversal for each tree: 1 2 3 1 3 2 2 1 3 3 1 2 3 2 1 Also See: Average rating4.81/5. Vote count:162 TaggedDepth-first search,Hard,Recursive Thanks for reading. To share your code in the comments, please use ouronline compilerthat supports C,...