Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3] ...
Problem Description: Given an unsorted arraynums, reorder itin placesuch thatnums lt nums gt nums lt nums .... For example, givennums , , , , , , one possible answer is , , , , , . The final sortednum ...
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Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3] ...
,跟 Wiggle Sort II 相比起來,這道題的條件寬松很多,只因為多了一個等號。由於等號的存在,當數組中 ...
Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3]... ...
A sequence of numbers is called a wiggle sequence if the differences between successive numbers strictly alternate between positive and negative. ...
題目鏈接 鏈表的插入排序 Sort a linked list using insertion sort. 建議:為了操作方便,添加一個額外的頭結點。代碼 ...
題目: Sort a linked list in O(n log n) time using constant space complexity. 題解: 考慮到要求用O(nlogn)的時間復雜度和constant space complexity來sort list,自然而然想到 ...
題目如下:(題目鏈接) Sort a linked list in O(n log n) time using constant space complexity. 在上一題中使用了插入排序,時間復雜度為O(n^2)。nlogn的排序有快速排序、歸並排序、堆排序。雙向鏈表用快排比較適合,堆排序 ...
原題地址:http://oj.leetcode.com/problems/sort-list/ 題意:鏈表的排序。要求:時間復雜度O(nlogn),空間復雜度O(1)。 解題思路:由於題目對時間復雜度和空間復雜度要求比較高,所以查看了各種解法,最好的解法就是歸並排序,由於鏈表在歸並操作時 ...