随笔分类 - LeetCode
摘要：In a given integer array nums, there is always exactly one largest element. Find whether the largest element in the array is at least twice as much as
阅读全文
摘要：Implement int sqrt(int x). Compute and return the square root of x. x is guaranteed to be a non-negative integer. Example 1: Input: 4 Output: 2 Exampl
阅读全文
摘要：On a staircase, the i-th step has some non-negative cost cost[i] assigned (0 indexed). Once you pay the cost, you can either climb one or two steps. Y
阅读全文
摘要：Find the minimum length word from a given dictionary words, which has all the letters from the string licensePlate. Such a word is said to complete th
阅读全文
摘要：Given a list of sorted characters letters containing only lowercase letters, and given a target letter target, find the smallest element in the list t
阅读全文
摘要：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
阅读全文
摘要：Reverse bits of a given 32 bits unsigned integer. For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), retur
阅读全文
摘要：Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses. Now, you are given p
阅读全文
摘要：Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- Remov
阅读全文
摘要：Find the nth digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... Note:n is positive and will fit within the range of a 32-bi
阅读全文
摘要：Given an array of integers sorted in ascending order, find the starting and ending position of a given target value. Your algorithm's runtime complexi
阅读全文
摘要：Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences are s
阅读全文
摘要：An image is represented by a 2-D array of integers, each integer representing the pixel value of the image (from 0 to 65535). Given a coordinate (sr,
阅读全文
摘要：Suppose you have a long flowerbed in which some of the plots are planted and some are not. However, flowers cannot be planted in adjacent plots - they
阅读全文
摘要：Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: A: a1 → a2
阅读全文
摘要：Implement a MyCalendarTwo class to store your events. A new event can be added if adding the event will not cause a triple booking. Your class will ha
阅读全文
摘要：Implement a MyCalendar class to store your events. A new event can be added if adding the event will not cause a double booking. Your class will have
阅读全文
摘要：A self-dividing number is a number that is divisible by every digit it contains. For example, 128 is a self-dividing number because 128 % 1 == 0, 128
阅读全文
摘要：Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Note: 求一个数组的范围和，可以使用动态规划来计算。 dp[x]数组表示原
阅读全文
摘要：Write a function to find the longest common prefix string amongst an array of strings. 找出字符串数组中最长的公共前缀。 思路：将字符串数组中每个字符串左对齐，排成一列，然后依次对比每个字符串的相同位置的字母。 如
阅读全文
浙公网安备 33010602011771号