1 题目 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…

1 题目 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. Determine if you are able to reach the last index. For example…

LeetCode面试常见100题( TOP 100 Liked Questions) 置顶 2018年07月16日 11:25:22 lanyu_01 阅读数 9704更多 分类专栏: 面试编程题真题合集 常见算法问题 LeetCode试题 LeetCode常见试题   版权声明:本文为博主原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明. 本文链接:https://blog.csdn.net/lanyu_01/article/details/81062232 这篇…

leetcode面试准备: Maximal Rectangle 1 题目 Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area. 接口: int maximalRectangle(char[][] matrix) 2 思路 这是一道非常综合的题目,要求在0-1矩阵中找出面积最大的全1矩阵.刚看到这道题会比较无从下手,b…

leetcode面试准备: Game of Life 1 题目 According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John Horton Conway in 1970." Given a board with m by n cells, each c…

leetcode面试准备: Word Pattern 1 题目 Given a pattern and a string str, find if str follows the same pattern. Examples: pattern = "abba", str = "dog cat cat dog" should return true. pattern = "abba", str = "dog cat cat fish&qu…

leetcode面试准备:Add and Search Word - Data structure design 1 题目 Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a regular expression string containing on…

leetcode面试准备:Reverse Words in a String 1 题目 Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". Update (2015-02-12): For C programmers: Try to solve it in-place in…

leetcode面试准备:Implement Trie (Prefix Tree) 1 题目 Implement a trie withinsert, search, and startsWith methods. Note: You may assume that all inputs are consist of lowercase letters a-z. 2 思路 该题是实现trie树. Trie,又称单词查找树或键树,是一种树形结构.典型应用是用于统计和排序大量的字符串(但不仅限于字符…

leetcode面试准备:Triangle 1 题目 Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following triangle [ [2], [3,4], [6,5,7], [4,1,8,3] ] The minimum path sum…

leetcode面试准备:Sliding Window Maximum 1 题目 Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves righ…

leetcode面试准备:Simplify Path 1 题目 Given an absolute path for a file (Unix-style), simplify it. For example, path = "/home/", => "/home" path = "/a/./b/../../c/", => "/c" Corner Cases: Did you consider the case w…

leetcode面试准备:Kth Largest Element in an Array 1 题目 Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. For example, Given [3,2,1,5,6,4] and k = 2, return 5. Note…

leetcode面试准备:Minimum Size Subarray Sum 1 题目 Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] a…

leetcode面试准备: Substring with Concatenation of All Words 1 题目 You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of substring(s) in s that is a concatenation of each word in words exactly…

leetcode面试准备:Valid Anagram 1 题目 Given two strings s and t, write a function to determine if t is an anagram of s. For example, s = "anagram", t = "nagaram", return true. s = "rat", t = "car", return false. Note: You…

leetcode面试准备:Divide Two Integers 1 题目 Divide two integers without using multiplication, division and mod operator. If it is overflow, return MAX_INT. 接口: public int divide(int dividend, int divisor) 2 思路 题意 不用乘.除.mod 做一个除法运算. 解 直接用除数去一个一个加,直到被除数被超过的话…

leetcode面试准备:Container With Most Water 1 题目 Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines,…

leetcode面试准备:Lowest Common Ancestor of a Binary Search Tree & Binary Tree 1 题目 Binary Search Tree的LCA Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikiped…

一天一道LeetCode系列 (一)题目 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. Determine if you are able to reach the last in…

https://leetcode.com/contest/5/problems/frog-jump/ 这个题目,还是有套路的,之前做过一道题,好像是贪心性质,就是每次可以跳多远,最后问能不能跳到最右边,一会找一下这道题(找到了,就是这个55. Jump Game).然后这道题,差不多是相同的意思,但是每次只能跳3个或者2个,跳了之后还要判断那个位置有没有石头,然后还要记录上一次跳的间隔,然后我就想到了要用map做一个位置到index的映射,主要用于o(1)的查找,可以用unordered_map…

1 题目 You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. Input: (2 -> 4 -> 3) + (5 -> 6 -…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 55: Jump Gamehttps://leetcode.com/problems/jump-game/ Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represe…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 45: Jump Game IIhttps://oj.leetcode.com/problems/jump-game-ii/ Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the arra…

一天一道LeetCode系列 (一)题目 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 mi…

A frog is crossing a river. The river is divided into x units and at each unit there may or may not exist a stone. The frog can jump on a stone, but it must not jump into the water. Given a list of stones' positions (in units) in sorted ascending ord…

Given an array of integers arr and an integer d. In one step you can jump from index i to index: i + x where: i + x < arr.length and 0 < x <= d.i - x where: i - x >= 0 and 0 < x <= d.In addition, you can only jump from index i to index j…

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 贪心 日期 题目地址:https://leetcode.com/problems/reach-a-number/description/ 题目描述 Given an array of non-negative integers, you are initially positioned at the first index of the array.…

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 贪心 日期 题目地址:https://leetcode.com/problems/jump-game/description/ 题目描述 Given an array of non-negative integers, you are initially positioned at the first index of the array. Each…

1 题目 Description: Count the number of prime numbers less than a non-negative number, n. 接口:public int countPrimes(int n); 2 思路 统计小于n的素数个数,注意不包括n. 思路1:素数的判断 很容易想到素数的判断isPrime,然后逐个数来进行判断是否是素数.进行统计,输出结果. 复杂度: 把isPrime时间复杂度控制在O(n^0.5)的话,因此:Time:O(n^1.5)…