Given an array consisting of n integers, find the contiguous subarray whose length is greater than or equal to k that has the maximum average value. And you need to output the maximum average value. Example 1: Input: [1,12,-5,-6,50,3], k = 4 Output:…

Given an array consisting of n integers, find the contiguous subarray whose length is greater than or equal to k that has the maximum average value. And you need to output the maximum average value. Example 1: Input: [1,12,-5,-6,50,3], k = 4 Output:…

Given a non-empty binary search tree and a target value, find k values in the BST that are closest to the target. Note: Given target value is a floating point. You may assume k is always valid, that is: k ≤ total nodes. You are guaranteed to have onl…

Given an array consisting of n integers, find the contiguous subarray whose length is greater than or equal to k that has the maximum average value. And you need to output the maximum average value. Example 1: Input: [1,12,-5,-6,50,3], k = 4 Output:…

leetcode644. Maximum Average Subarray II 题意: 给定由n个整数组成的数组,找到长度大于或等于k的连续子阵列,其具有最大平均值.您需要输出最大平均值. 思路: 先计算前k个的avg和sum,然后每次往后加一个数,每次加一个数的同时用一个tempsum( = sum)依次减少前置的数,以此来模拟区间向后移动的计算.与直接的暴力相比,少了向后加又前减的一些步骤,减少了许多重复计算,但是这应该不是最优的算法,更快的算法暂时还没想到. ac代码: C++ clas…

Given an array consisting of n integers, find the contiguous subarray whose length is greater than or equal to k that has the maximum average value. And you need to output the maximum average value. Example 1: Input: [1,12,-5,-6,50,3], k = 4 Output:…

Description Given an array with positive and negative numbers, find the maximum average subarray which length should be greater or equal to given length k. It's guaranteed that the size of the array is greater or equal to k. Example Example 1: Input:…

Design a class which receives a list of words in the constructor, and implements a method that takes two words word1 and word2 and return the shortest distance between these two words in the list. Your method will be called repeatedly many times with…

On a horizontal number line, we have gas stations at positions stations[0], stations[1], ..., stations[N-1], where N = stations.length. Now, we add K more gas stations so that D, the maximum distance between adjacent gas stations, is minimized. Retur…

Given a set of words (without duplicates), find all word squares you can build from them. A sequence of words forms a valid word square if the kth row and column read the exact same string, where 0 ≤ k < max(numRows, numColumns). For example, the wor…