the binary tree could be similar to binary array. The difference is how to decide the middle. ( we use the leftmost node of the right subtree from root to get the middle position and then determine to search the
Some of the problems and puzzles below should be their own repos because of their size, but the convenience of a single binary tree package is too great to break them out.BuildingSupport code resides entirely in package tree, which lives in the tree/ directory. Answering the questions or ...
[LeetCode] 374. Guess Number Higher or Lower_Easy tag: Binary Search [LeetCode] 34. Find First and Last Position of Element in Sorted Array == [LintCode] 61. Search for a Range_Easy tag: Binary Searchfirst index and last index == target in duplicates. [LeetCode] 35. Search Insert ...
class NumArray: def __init__(self,nums): self.l=len(nums) self.segmentTree=[0]*(4*self.l) def build(i,s,e): if s==e: self.segmentTree[i]=nums[s] else: mid=s+(e-s)//2 build(2*i+1,s,mid) build(2*i+2,mid+1,e) self.segmentTree[i]=self.segmentTree[2*i+1]+se...
[★209. 长度最小的子数组](https://leetcode.cn/problems/minimum-size-subarray-sum/) 611.有效三角形的个数 436.寻找右区间 2070.每一个查询的最大美丽值 1488.避免洪水泛滥 2195.向数组中追加K个整数 826.安排工作以达到最大收益 [2300. 咒语和药水的成功对数](https://leetcode.cn/problems/successful...
测试用例: https://leetcode.com/problems/binary-tree-maximum-path-sum/description/ """ """ 第一版:此版本实现思路:从底到顶,每次都会比对是否是最大值。此版本的问题是输出的不是最大的路径而是所有节点中最大的相加和。比如此树: 5 / \ 4 8 / / \ 11 13 4 / \ \ 7 2 1 从全部相加得出...
mini is the largest value in the tree that is smaller than or equal to queries[i]. If a such value does not exist, add -1 instead. maxi is the smallest value in the tree that is greater than or equal to queries[i]. If a such value does not exist, add -1 instead. Return the...
958. Check Completeness of a Binary Tree//https://leetcode.com/problems/check-completeness-of-a-binary-tree/description/classTreeNode(var `val`: Int) { var left: TreeNode? =nullvar right: TreeNode? =null}classSolution { fun isCompleteTree(root: TreeNode?): Boolean {if(root ==null) ...