随笔分类 - Arrays & Hashing
摘要：128. Longest Consecutive Sequence Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must w
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摘要：271. Encode and Decode Strings 居然要premium才能做，果断换LintCode来写这题 Design an algorithm to encode a list of strings to a string. The encoded string is then s
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摘要：238. Product of Array Except Self Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements
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摘要：347. Top K Frequent Elements Given an integer array nums and an integer k, return the k most frequent elements. You may return the answer in any order
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摘要：49. Group Anagrams Given an array of strings strs, group the anagrams together. You can return the answer in any order. An Anagram is a word or phrase
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摘要：1. Two Sum Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume th
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摘要：242. Valid Anagram Given two strings s and t, return true if t is an anagram of s, and false otherwise. An Anagram is a word or phrase formed by rearr
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摘要：217. Contains Duplicate Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element i
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