2. Insertion Sort, 将arr分为左边(sorted array)和右边(unsorted array),然后依次将unsorted array的元素insert到sorted array里面。 T: O(n ^ 2), S: O(1) 同样的思路[LeetCode] 147. Insertion Sort List_Middle tag: Linked List 3. Merge Sort, 将array 分成两半,然后在merge两个sorted array, 每次...
之后对a[0 - 4]和a[6-9]继续进行之前的步骤 Quick Sort的代码: 1publicintpivot(int[] A,intleft,intright){2intp =A[left];3while(left <right){4while(left < right && A[right] >=p)5right--;6if(left <right){7A[left] =A[right];8left++;9}10while(left < right && A[left] <=...
QuickSort BinaryTree`s deep LeetCode~ListNode 快排 func QuickSort<T: Comparable>(dest:[T])->[T]{ guard dest.count > 1 else { return dest } let middle = dest[dest.count/2] let bigger = dest.filter { (t:T) -> Bool in return t > middle } let equal = dest.filter { (t:T) ...
Ruby implementation of Algorithms,Data-structures and programming challenges algorithmstackleetcodequicksorthackerrankbubble-sortinsertion-sortleetcode-solutionsbinary-searchcodilitymerge-sortpythagorean-tripleskadanes-algorithmarray-rotationknuth-shuffling-algorithmdutch-nationalflag-problemstrivers-sde-sheetblind75grind...
32 changes: 32 additions & 0 deletions 32 all/sort.go Original file line numberDiff line numberDiff line change @@ -0,0 +1,32 @@ package all import ( "math/rand" ) func QuickSort(a []int) { quickSort(a, 0, len(a)-1) } func quickSort(a []int, l, r int) { if l >...
quicksort就是选出某一个数在数组里面应该待的位置。上一篇已经提到了。所以这里就可以用quick sort来找第n-k的位置上的数。n为数组长度。 my solution: class Solution { public int findKthLargest(int[] nums, int k) { if(nums.length == 1) return nums[0]; ...
quicksort(head, nullptr);returnhead; } }; 两个指针,fast 指向大元素链表尾部,slow 指向小元素链表尾部,slow->next 是大元素链表头部。 遇到需要放在小元素链表的元素,我们就 slow = slow -> next,占用大元素链表头部的空间放置小元素。而原来的大元素链表头部的元素用值交换的放置放到链表末尾。
3. Use quickSort, 其实跟[LeetCode] 973. K Closest Points to Origin_Medium tag: Sort, heap, quickSort做法一样。 T: average O(n), worst case O(n ^ 2) classSolution:deftopKFrequent(self, nums: List[int], k: int) ->List[int]: ...
Here's a list of 30 coding interview patterns, each with one or two example LeetCode problems:1. Sliding WindowProblem 1: Minimum Size Subarray Sum Problem 2: Longest Substring Without Repeating Characters2. Two PointersProblem 1: 3Sum Problem 2: Container With Most Water...
参考quickSort use two pointers to decrease Time into O(n * lgn ) or O(n), 跟这个题目的做法一样[LeetCode] 973. K Closest Points to Origin_Medium tag: Sort, heap, quickSort code classSolution:deffindKthLargest(self, nums: List[int], k: int) ->int: ...