04 2018 档案
摘要：［抄题］： A sentence S is given, composed of words separated by spaces. Each word consists of lowercase and uppercase letters only. We would like to conve
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摘要：［抄题］： Given a paragraph and a list of banned words, return the most frequent word that is not in the list of banned words. It is guaranteed there is a
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摘要：［抄题］： Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie. Each child i h
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摘要：［抄题］： Given a binary search tree (BST) with duplicates, find all the mode(s) (the most frequently occurred element) in the given BST. Assume a BST is
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摘要：［抄题］： Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), determine if a person could attend a
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摘要：［抄题］： 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
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摘要：［抄题］： You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4 following types: Each round's operation is p
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摘要：［抄题］： You are given two arrays (without duplicates) nums1 and nums2 where nums1’s elements are subset of nums2. Find all the next greater numbers for
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摘要：［抄题］： Given a list of sorted characters letters containing only lowercase letters, and given a target letter target, find the smallest element in the
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摘要：［抄题］： 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 g
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摘要：［抄题］： Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library f
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摘要：［抄题］： Implement int sqrt(int x). Compute and return the square root of x, where x is guaranteed to be a non-negative integer. Since the return type is
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摘要：［抄题］： Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences
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摘要：［抄题］： A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down). Write a function to determine if a nu
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摘要：［抄题］： Given a list of strings words representing an English Dictionary, find the longest word in words that can be built one character at a time by ot
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摘要：［抄题］： Suppose Andy and Doris want to choose a restaurant for dinner, and they both have a list of favorite restaurants represented by strings. You nee
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摘要：［抄题］： We define a harmonious array is an array where the difference between its maximum value and its minimum value is exactly 1. Now, given an intege
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摘要：［抄题］： he set S originally contains numbers from 1 to n. But unfortunately, due to the data error, one of the numbers in the set got duplicated to anot
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摘要：［抄题］： Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters
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摘要：［抄题］： Given a string, determine if a permutation of the string could form a palindrome. For example,"code" -> False, "aab" -> True, "carerac" -> True.
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摘要：［抄题］： 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
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摘要：［抄题］： You are given a data structure of employee information, which includes the employee's unique id, his importance value and his directsubordinates
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摘要：［抄题］： Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy
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摘要：［抄题］： Given a non-empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear
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摘要：［抄题］： 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 lett
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摘要：［抄题］： Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a
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摘要：［抄题］： Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occ
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摘要：［抄题］： Count the number of prime numbers less than a non-negative number, n. [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空间分析： ［奇葩输出条件］： ［奇葩corner case］： ［思维问题］：
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摘要：［抄题］： 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
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摘要：［抄题］： Given two lists Aand B, and B is an anagram of A. B is an anagram of A means B is made by randomizing the order of the elements in A. We want to
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摘要：［抄题］： 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 horizonta
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摘要：［抄题］： Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive
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摘要：［抄题］： You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in Sis a type of
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摘要：［抄题］： Given m arrays, and each array is sorted in ascending order. Now you can pick up two integers from two different arrays (each array picks one) a
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摘要：［抄题］： Given an array of integers nums, write a method that returns the "pivot" index of this array. We define the pivot index as the index where the s
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摘要：［抄题］： 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
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摘要：［抄题］： 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 wi
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摘要：［抄题］： 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 m
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摘要：［抄题］： 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 outp
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摘要：［抄题］： Given a non-empty array of integers, return the third maximum number in this array. If it does not exist, return the maximum number. The time co
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摘要：［抄题］： Given an unsorted array of integers, find the length of longest continuous increasing subsequence (subarray). Example 1: Example 2: [暴力解法]： 时间分析
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摘要：［抄题］： Given an array with n integers, your task is to check if it could become non-decreasing by modifying at most 1 element. We define an array is no
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摘要：［抄题］： Given a 2D integer matrix M representing the gray scale of an image, you need to design a smoother to make the gray scale of each cell becomes t
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摘要：［抄题］： Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list. For example,Assume that w
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摘要：［抄题］： Given a binary array, find the maximum number of consecutive 1s in this array. Example 1: [暴力解法]： 用temp,result，结果发现写起来很麻烦 时间分析： 空间分析： [优化后]： 时间分
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摘要：［抄题］： A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if
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摘要：［抄题］： In MATLAB, there is a very useful function called 'reshape', which can reshape a matrix into a new one with different size but keep its original
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摘要：［抄题］： Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements.
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摘要：［抄题］： We have two special characters. The first character can be represented by one bit 0. The second character can be represented by two bits (10 or
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摘要：［抄题］： Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4
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摘要：［抄题］： Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [
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摘要：［抄题］： Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. Example 1 Example 2 [暴力解法]
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摘要：［抄题］： Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空间分析： ［奇葩
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摘要：［抄题］： Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in t
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摘要：［抄题］： Given an array of integers and an integer k, you need to find the number of unique k-diff pairs in the array. Here a k-diff pair is defined as a
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摘要：［抄题］： Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For exampl
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