随笔分类 - LeetCode
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 a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any leadin
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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 containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 1,
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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：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 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：Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may comple
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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 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 numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return java(1ms):
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摘要：Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note:You may assume that nums1 has enough space (size tha
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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 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：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：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 unsorted array of integers, find the length of longest continuous increasing subsequence. Example 1: Example 2: 在未排序的数组中，找出最长递增序列的长度 c++(16ms
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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：如果一个数组里所有数都不同，则返回false 如果有重复数字，则返回true C++（36ms）：
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