随笔分类 - Hash Table
发表于 2019-04-12 22:00阅读：441评论：0推荐：0
摘要：Given an array A of integers, return the number of (contiguous, non-empty) subarrays that have a sum divisible by K. Example 1: Note: Approach #1: Has
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发表于 2018-11-20 19:48阅读：258评论：0推荐：0
摘要：You have k lists of sorted integers in ascending order. Find the smallest range that includes at least one number from each of the k lists. We define
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发表于 2018-11-20 15:54阅读：252评论：0推荐：0
摘要：Given a list of directory info including directory path, and all the files with contents in this directory, you need to find out all the groups of dup
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发表于 2018-11-19 21:47阅读：222评论：0推荐：0
摘要：Suppose Andy and Doris want to choose a restaurant for dinner, and they both have a list of favorite restaurants represented by strings. You need to h
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发表于 2018-11-19 20:48阅读：179评论：0推荐：0
摘要：We define a harmonious array is an array where the difference between its maximum value and its minimum value is exactly1. Now, given an integer array
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发表于 2018-11-19 18:19阅读：196评论：0推荐：0
摘要：Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy of th
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发表于 2018-11-19 18:00阅读：193评论：0推荐：0
摘要：There is a brick wall in front of you. The wall is rectangular and has several rows of bricks. The bricks have the same height but different width. Yo
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发表于 2018-11-19 12:16阅读：285评论：0推荐：0
摘要：TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http
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发表于 2018-11-19 10:41阅读：213评论：0推荐：0
摘要：Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Example 2: Note: The length of the giv
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发表于 2018-11-19 09:11阅读：193评论：0推荐：0
摘要：Given a List of words, return the words that can be typed using letters of alphabet on only one row's of American keyboard like the image below. Examp
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发表于 2018-11-19 08:09阅读：199评论：0推荐：0
摘要：You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/ve
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发表于 2018-11-17 16:36阅读：236评论：0推荐：0
摘要：We are given non-negative integers nums[i] which are written on a chalkboard. Alice and Bob take turns erasing exactly one number from the chalkboard,
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发表于 2018-11-17 15:49阅读：245评论：0推荐：0
摘要：There are two types of soup: type A and type B. Initially we have N ml of each type of soup. There are four kinds of operations: When we serve some so
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发表于 2018-11-17 12:04阅读：164评论：0推荐：0
摘要：A website domain like "discuss.leetcode.com" consists of various subdomains. At the top level, we have "com", at the next level, we have "leetcode.com
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发表于 2018-11-16 22:36阅读：249评论：0推荐：0
摘要：Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Example 2: Example 3: Approach #1: c++.
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发表于 2018-11-16 22:25阅读：273评论：0推荐：0
摘要：Given n points in the plane that are all pairwise distinct, a "boomerang" is a tuple of points (i, j, k) such that the distance between i and j equals
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发表于 2018-11-16 19:09阅读：250评论：0推荐：0
摘要：Given a string s and a non-empty string p, find all the start indices of p's anagrams in s. Strings consists of lowercase English letters only and the
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发表于 2018-11-16 15:49阅读：184评论：0推荐：0
摘要：Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters. This
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发表于 2018-11-16 15:03阅读：173评论：0推荐：0
摘要：Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter at
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发表于 2018-11-15 22:33阅读：214评论：0推荐：0
摘要：Design a data structure that supports all following operations in average O(1) time. Note: Duplicate elements are allowed. Example: Approach #1: C++.
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