I implemented merge sort with my own linked list for a school project. I was not allowed to use anything but the methods you see in the list. It seems to work properly, however, when running the provided testbed, I am told that the implementation is likely O(n2)O(n2)....
Merge k sorted linked list就是merge 2 sorted linked list的变形题。 而且我们很自然的就想到了经典的Merge Sort,只不过那个是对数组进行sort。而不同的地方,仅仅是Merge两个list的操作不同。 这里来复习一下Merge Sort(对于数组操作),参考Wikipedia: 归并操作(merge),也叫归并算法,指的是将两个已经排序的序列...
At the end of the merge function, the subarray A[p..r] is sorted. Merge Sort Code in Python, Java, and C/C++ Python Java C C++ # MergeSort in Python def mergeSort(array): if len(array) > 1: # r is the point where the array is divided into two subarrays r = len(array)/...
I created a Merge Sort implementation in Java, However, it seems to have a bug that's throwing an Index Out of Bounds Exception.
Heap Sort public class Solution { private static int[] a; private static int n; private static int left; private static int right; private static int largest; public void sortIntegers2(int[] A) { a = A; buildheap(a); for(int i=n;i>0;i--){ ...
Java Code:class Solution { public void merge(int[] nums1, int m, int[] nums2, int n) { int i=m-1, j=n-1, k=m+n-1; // 合并 while(i>=0 && j>=0) { if(nums1[i] > nums2[j]) { nums1[k--] = nums1[i--]; } else { nums1[...
You may assume that A has enough space (size that is greater or equal tom+n) to hold additional elements from B. The number of elements initialized in A and B aremandnrespectively. 题解: 这道题是说让B merge到 A 里面。 先复习下原本我们在MergeSort里面怎么利用一个新建的数量来merge two ...
Java import java.util.Arrays; public class Solution { // 选择排序:每一轮选择最小元素交换到未排定部分的开头 public int[] sortArray(int[] nums) { int len = nums.length; // 循环不变量:[0, i) 有序,且该区间里所有元素就是最终排定的样子 for (int i = 0; i < len - 1; i++) {...
// Heap sort for (int i = n - 1; i >= 0; i--) { swap(&arr[0], &arr[i]); // Heapify root element to get highest element at root again heapify(arr, i, 0); } Heap Sort Code in Python, Java, and C/C++ Python Java C C++ # Heap Sort in python def heapify(arr, n,...
Java C C++ # Bucket Sort in Python def bucketSort(array): bucket = [] # Create empty buckets for i in range(len(array)): bucket.append([]) # Insert elements into their respective buckets for j in array: index_b = int(10 * j) bucket[index_b].append(j) # Sort the elements of...