Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3].... Notice You may assume all input has valid answer. ExampleGiven nums = [1, 5, 1, 1, 6, 4], one possible answer is [1, 4, 1, 5, 1, 6]. Given nums = [1, 3,…

Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3].... Example 1: Input: nums = [1, 5, 1, 1, 6, 4] Output: One possible answer is [1, 4, 1, 5, 1, 6]. Example 2: Input: nums = [1, 3, 2, 2, 3, 1] Output: One po…

Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3].... Example:(1) Given nums = [1, 5, 1, 1, 6, 4], one possible answer is [1, 4, 1, 5, 1, 6]. (2) Given nums = [1, 3, 2, 2, 3, 1], one possible answer is [2, 3…

Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3].... Example 1: Input: nums = [1, 5, 1, 1, 6, 4] Output: One possible answer is [1, 4, 1, 5, 1, 6]. Example 2: Input: nums = [1, 3, 2, 2, 3, 1] Output: One po…

给定一个无序的数组nums,将它重新排列成nums[0] < nums[1] > nums[2] < nums[3]...的顺序.例子:(1) 给定nums = [1, 5, 1, 1, 6, 4],一个可能的结果是[1, 4, 1, 5, 1, 6].(2) 给定nums = [1, 3, 2, 2, 3, 1],一个可能的结果是[2, 3, 1, 3, 1, 2].注意:你可以假设所有输入都有有效的结果.进阶:你能用 O(n) 时间复杂度 / 或原地 O(1) 额外空间来实现吗? 详…

Wiggle Sort II Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3].... 注意事项 You may assume all input has valid answer. 样例 Given nums = [1, 5, 1, 1, 6, 4], one possible answer is [1, 4, 1, 5, 1, 6]. Given nums…

Wiggle Sort: 注意:解法一是每次i增加2,题目不是保证3个3个的情况,而是整个数组都要满足要求. 解法一错误版本: 如果nums的长度是4,这种情况下nums[i+1]会越界.但是如果你用的是i和i-1的组合,一定可以不会越界,因为i不越界i-1就一定不会越界,for循环控制i,i越界了整个循环就结束了. class Solution { public: void wiggleSort(vector<int>& nums) { sort(nums.begin(),nums.…

Given an unsorted array nums, reorder it in-place such that nums[0] <= nums[1] >= nums[2] <= nums[3].... Notice Please complete the problem in-place. ExampleGiven nums = [3, 5, 2, 1, 6, 4], one possible answer is [1, 6, 2, 5, 3, 4]. LeetCode上的原题,…

Given an unsorted array nums, reorder it in-place such that nums[0] <= nums[1] >= nums[2] <= nums[3].... For example, given nums = [3, 5, 2, 1, 6, 4], one possible answer is [1, 6, 2, 5, 3, 4]. 题目标签:Array, Sort 题目给了我们一个nums array, 让我们wiggle sort.…

Given an integer array, sort it in ascending order. Use quick sort, merge sort, heap sort or any O(nlogn) algorithm.   Example Given [3, 2, 1, 4, 5], return [1, 2, 3, 4, 5]. 快速排序是排序算法中比较重要一种,也是经常容易考的一种排序算法,务必要掌握好.快排的优点是其平均时间复杂度为O(nlgn),这样在给大数据集排序的时候,…