In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" and "yy". Call a…
Question 830. Positions of Large Groups Solution 题目大意: 字符串按连续相同字符分组,超过3个就返回首字符和尾字符 思路 : 举例abcdddeeeeaabbbcd end start end-start a 0 0 b 1 0,1 1-0=1 c 2 1,2 2-1=1 d 3 2,3 3-2=1 d 4 3 d 5 3 e 6 3,6 6-3=3 3,5 e 7 6 e 8 6 e 9 6 a 10 6,10 10-6=4 6,9 a 11…
problem 830. Positions of Large Groups solution1: class Solution { public: vector<vector<int>> largeGroupPositions(string S) { vector<vector<int>> res; , end = ; ; i<S.size(); ++i) { ]) end = i; ]) { ) res.push_back({start, end}…
In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" and "yy". Call a…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/positions-of-large-groups/description/ 题目描述 In a string S of lowercase letters, these letters form consecutive groups of the same characte…
In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" and "yy". Call a…
In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" and "yy". Call a…
In a 2D grid of 0s and 1s, we change at most one 0 to a 1. After, what is the size of the largest island? (An island is a 4-directionally connected group of 1s). Example 1: Input: [[1, 0], [0, 1]] Output: 3 Explanation: Change one 0 to 1 and connect…
Positions of Large Groups In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" …
In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" and "yy". Call a…
In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy"has the groups "a", "bb", "xxxx", "z"and "yy". Call a g…
Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Your goal is to reach the last index in the minimum number of jumps…
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the bottom-right corner of the grid (marked 'Finish' in t…
Reverse a linked list from position m to n. Do it in one-pass. Note: 1 ≤ m ≤ n ≤ length of list. Example: Input: 1->2->3->4->5->NULL, m = 2, n = 4 Output: 1->4->3->2->5->NULL 这个题目是在[LeetCode] 206. Reverse Linked List_Easy tag…
You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The path does not need to start or end at the root or a leaf, but it must go downwards (traveling only from parent nodes to…
Write a function that takes a string as input and reverse only the vowels of a string. Example 1: Input: "hello" Output: "holle" Example 2: Input: "leetcode" Output: "leotcede" Note:The vowels does not include the l…
In a 2D grid of 0s and 1s, we change at most one 0 to a 1. After, what is the size of the largest island? (An island is a 4-directionally connected group of 1s). Example 1: Input: [[1, 0], [0, 1]] Output: 3 Explanation: Change one 0 to 1 and connect…
Given a string s, partition s such that every substring of the partition is a palindrome. Return the minimum cuts needed for a palindrome partitioning of s. Example: Input: "aab" Output: 1 Explanation: The palindrome partitioning ["aa"…
Given a nested list of integers, return the sum of all integers in the list weighted by their depth. Each element is either an integer, or a list -- whose elements may also be integers or other lists. Example 1: Input: [[1,1],2,[1,1]] Output: 10 Expl…
Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole array will be sorted in ascending order, too. You need to find the shortest such subarray and output its length. E…
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is greater than the last integer of the previous ro…
Given an array consisting of n integers, find the contiguous subarray of given length k that has the maximum average value. And you need to output the maximum average value. Example 1: Input: [1,12,-5,-6,50,3], k = 4 Output: 12.75 Explanation: Maximu…
Given a binary tree, return all root-to-leaf paths. Note: A leaf is a node with no children. Example: Input: 1 / \ 2 3 \ 5 Output: ["1->2->5", "1->3"] Explanation: All root-to-leaf paths are: 1->2->5, 1->3 思路为DFS, 只是a…
In a group of N people (labelled 0, 1, 2, ..., N-1), each person has different amounts of money, and different levels of quietness. For convenience, we'll call the person with label x, simply "person x". We'll say that richer[i] = [x, y] if pers…
Given an undirected graph, return true if and only if it is bipartite. Recall that a graph is bipartite if we can split it's set of nodes into two independent subsets A and B such that every edge in the graph has one node in A and another node in B.…
Given a binary search tree and a node in it, find the in-order successor of that node in the BST. Note: If the given node has no in-order successor in the tree, return null. Example 1: Input: root = [2,1,3], p = 1 2 / \ 1 3 Output: 2 Example 2: Input…
