Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position. Return the max sliding…

Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position. Return the max sliding…

给定一个数组 nums,有一个大小为 k 的滑动窗口从数组的最左侧移动到数组的最右侧.你只可以看到在滑动窗口 k 内的数字.滑动窗口每次只向右移动一位.例如,给定 nums = [1,3,-1,-3,5,3,6,7],和 k = 3 .窗口位置                        最大值---------------                    -----[1  3  -1] -3  5  3  6  7       3 1 [3  -1  -3] 5  3  6  7   …

Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position. For example,Given nums…

原题链接 题意: 给定一个数组数字,有一个大小为k的滑动窗口,它从数组的最左边移动到最右边.你只能在窗口看到k个数字.每次滑动窗口向右移动一个位置. 记录每一次窗口内的最大值,返回记录的值. 思路: 解法一: 一开始用的c++迭代器来模拟窗口,每移动一次就遍历一次找出最大值填入返回数组中. 效率非常低 Runtime: 108 ms, faster than 7.98% of C++ class Solution { public: vector<int> maxSlidingWindow(v…

这题是典型的堆排序算法,只是比一般的堆算法多了删除的操作,有两件事需要做: 1 用一个hash表存储从输入数组索引到堆数组(用于实现堆的那个数组)所以的映射,以便在需要删除一个元素的时候能迅速定位到堆数组中的位置 2用一个set保存已经被删除的元素索引(这里指的是输入数组索引),这一点可选;还有一种做法就是直接将已删除元素的值设为最小INT_MIN,不过在leetcode里面并没有说清楚数据范围 class Solution { public: unordered_map<int, int>…

Median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value. So the median is the mean of the two middle value. Examples: [2,3,4] , the median is 3 [2,3], the median is (2 + 3) / 2 = 2.5 Given an a…

Sliding Window Maximum   Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one positio…

Sliding Window Maximum Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position.…

这道题是从优先队列的难题里面找到的一个题目.可是解法并不是优先队列,而是双项队列deque 其实只要知道思路,这一道题直接写没有太大的问题.我们看看题 给定一个数组 nums,有一个大小为 k 的滑动窗口从数组的最左侧移动到数组的最右侧.你只可以看到在滑动窗口 k 内的数字.滑动窗口每次只向右移动一位. 返回滑动窗口最大值. 示例: 输入: nums = [1,3,-1,-3,5,3,6,7], 和 k = 3 输出: [3,3,5,5,6,7] 解释: 滑动窗口的位置 最大值 --------…