762. Prime Number of Set Bits in Binary Representation 0763. Partition Labels 0765. Couples Holding Hands 0766. Toeplitz Matrix 0767. Reorganize String 0771. Jewels and Stones 0775. Global and Local Inversions
1. Different tree nodes may share the same value, so for easier implemenation, do a dfs or bfs to relabel all N nodes from 0 to N - 1. 2. Convert the given binary tree to an undirected graph, either by dfs or bfs. Save all the leaf tree nodes during this conversion. 3. For e...
Given the root of a binary tree and an integer distance. A pair of two different leaf nodes of a binary tree is said to be good if the length of the shortest path between them is less than or equal to distance. Return the number of good leaf node pairs in the tree. Example 1: AI...
二叉查找树(Binary Search Tree),或者是一棵空树,或者是具有下列性质的二叉树: 若它的左子树不空,则左子树上所有结点的值均小于它的根结点的值; 若它的右子树不空,则右子树上所有结点的值均大于它的根结点的值; 它的左、右子树也分别为二叉排序树。 举个栗子, 给定n= 3, 共有 5 个. 1 3 3 2 1 \...
1146-greatest-common-divisor-of-strings 118-pascals-triangle 1194-path-in-zigzag-labelled-binary-tree 1196-filling-bookcase-shelves 1207-delete-nodes-and-return-forest 1212-sequential-digits 1217-relative-sort-array 1219-longest-well-performing-interval 1220-smallest-sufficient-team 1221-element-...
今天介绍的是LeetCode算法题中Easy级别的第188题(顺位题号是806)。我们要将给定字符串S的字母从左到右写成行。每行最大宽度为100个单位,如果写一个字母会导致该行的宽度超过100个单位,则会写入下一行。给出一个数组宽度,一个数组,其中widths[0]是'a'的宽度,widths[1]是'b'的宽度,widths[25]是'z'的宽度...
3110-score-of-a-string 3217-delete-nodes-from-linked-list-present-in-array README.md stats.json Repository files navigation README LeetCode Submissions I use a Chrome extension to automatically push my LeetCode solutions to this repository. This extension makes it easy to keep my solutions...
# or root of some tree. self.parent_=[-1]*nodes_count # size_[i] is the size of the (sub)tree, whose root is the i(th) node. # If size_[i] is 0, the i(th) node is not land. self.size_=[1]*nodes_count # The number of islands. ...
747. Largest Number At Least Twice of Others # 题目 # You are given an integer array nums where the largest integer is unique. Determine whether the largest element in the array is at least twice as much as every other number in the array. If it is, re
Binary Search Since the input numbers are within the range of 1 to n inclusive, if we pick a number and count how many numbers are smaller than it, if it is bigger than the number, meaning there is a duplicate below it. 1 2