03 2018 档案
摘要：Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complex
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摘要：The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Given two integers x and y, calcul
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摘要：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]. Not
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摘要：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 complexi
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摘要：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 an inte
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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
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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
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摘要：Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the
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摘要：Given a sorted array, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space fo
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摘要：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 output the
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摘要：Given an index k, return the kth row of the Pascal's triangle. For example, given k = 3,Return [1,3,3,1]. Note:Could you optimize your algorithm to us
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摘要：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 sum of
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摘要：Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return 贴上一个更加简洁的方法：
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摘要：Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or
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摘要：Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [-2,1,-3,4,-1,2,
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摘要：Given an array and a value, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you
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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
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摘要：Given an unsorted array of integers, find the length of longest continuous increasing subsequence (subarray). Example 1: Example 2: Note: Length of th
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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
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摘要：Given an integer array, find three numbers whose product is maximum and output the maximum product. Example 1: Example 2: Note: 这道题还是比较简单的，直接贴代码吧：）
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摘要：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 Note:Your al
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摘要：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 the arr
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摘要：Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function
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摘要：Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have ex
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摘要：Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction
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摘要：Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that the
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摘要：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 11). N
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摘要：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 [1, n]
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摘要：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 example, giv
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摘要：Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) Yo
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摘要：Given a binary array, find the maximum number of consecutive 1s in this array. Example 1: Note: The input array will only contain 0 and 1. The length
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摘要：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 the m
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摘要：之前有刷过一些题，但都坚持不下去，现在搞个小博客，希望自己能坚持下去吧~~ In MATLAB, there is a very useful function called 'reshape', which can reshape a matrix into a new one with diff
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