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摘要： 661. Image Smoother【easy】 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 阅读全文

摘要： 27. Remove Element【easy】 Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra spac 阅读全文

摘要： 26. Remove Duplicates from Sorted Array【easy】 Given a sorted array, remove the duplicates in place such that each element appear only once and return 阅读全文

摘要： 88. Merge Sorted Array【easy】 Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note:You may assume that num 阅读全文

摘要： 605. Can Place Flowers【easy】 Suppose you have a long flowerbed in which some of the plots are planted and some are not. However, flowers cannot be pla 阅读全文

摘要： 485. Max Consecutive Ones【easy】 Given a binary array, find the maximum number of consecutive 1s in this array. Example 1: Input: [1,1,0,1,1,1] Output: 阅读全文

摘要： 448. Find All Numbers Disappeared in an Array【easy】 Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and 阅读全文

摘要： 1. Two Sum【easy】 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 in 阅读全文

摘要： 189. Rotate Array【easy】 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 阅读全文

摘要： redis中字典有以下要点： （1）它就是一个键值对，对于hash冲突的处理采用了头插法的链式存储来解决。 （2）对rehash，扩展就是取第一个大于等于used * 2的2 ^ n的数作为新的hash表大小；缩紧就是取第一个大于等于used的2 ^ n的数作为新的hash表大小。后面会介绍到dic 阅读全文