mergesort

问题 I want to make a mergesort visualizer in python. I want to use turtle module. To draw a single bar i use the function draw_bar, and to draw the entire array there is the function draw_bars. Here is the code def draw_bar(x,y,w,h): turtle.up() turtle.goto(x,y) turtle.seth(0) turtle.down() turtle.begin_fill() turtle.fd(w) turtle.left(90) turtle.fd(h) turtle.left(90) turtle.fd(w) turtle.left(90) turtle.fd(h) turtle.left(90) turtle.end_fill() def draw_bars(v,currenti=-1,currentj=-1,M=500): turtle

问题 I am given k sorted arrays and need to merge them into one sorted array. We are assuming that n is the total number of elements in all the input arrays and that k=3. public class Merge { // Create a mergeklists() to merge 3 sorted arrays into one sorted array // Input: 3 sorted arrays a1[], a2[], a3[] // Output: one sorted array a[] that contains all the elements from input arrays public static void merge3lists(int[] a1, int[] a2, int[] a3, int[] a) { int i=0; int j=0; int h=0; int n = a1

问题 I am a novice programmer I am looking up into a problem which is using a recursive function. Though I could understand the main point, there is an unclear issue which I could not decipher immediately as I go through the debugging process. I will appreciate your help on my question. The problem's concept ( merge sorting ) is pretty straight forward, but I am confused with the way a recursive function works in general. Bellow is the program I am dealing with (from Georgia Tech course on Python)

问题 You can read this on Wikipedia: function merge_sort(list m) // Base case. A list of zero or one elements is sorted, by definition. if length(m) <= 1 return m // Recursive case. First, *divide* the list into equal-sized sublists. var list left, right var integer middle = length(m) / 2 for each x in m before middle add x to left for each x in m after or equal middle add x to right // Recursively sort both sublists left = merge_sort(left) right = merge_sort(right) // Then merge the now-sorted

问题 You can read this on Wikipedia: function merge_sort(list m) // Base case. A list of zero or one elements is sorted, by definition. if length(m) <= 1 return m // Recursive case. First, *divide* the list into equal-sized sublists. var list left, right var integer middle = length(m) / 2 for each x in m before middle add x to left for each x in m after or equal middle add x to right // Recursively sort both sublists left = merge_sort(left) right = merge_sort(right) // Then merge the now-sorted

问题 I implemented Merge Sort and Quick Sort in C++, and I wanna get the execution times using each of two with many of cases those are already Sorted or not & has different size. #include <iostream> #include <ctime> #include <vector> #include <algorithm> using namespace std; void Merge(vector<int>& s, int low, int mid, int high) { int i = low; int j = mid + 1; int k = low; vector<int> u(s); while (i <= mid && j <= high) { if (s.at(i) < s.at(j)) { u.at(k) = s.at(i); i++; } else { u.at(k) = s.at(j)

问题 I implemented Merge Sort and Quick Sort in C++, and I wanna get the execution times using each of two with many of cases those are already Sorted or not & has different size. #include <iostream> #include <ctime> #include <vector> #include <algorithm> using namespace std; void Merge(vector<int>& s, int low, int mid, int high) { int i = low; int j = mid + 1; int k = low; vector<int> u(s); while (i <= mid && j <= high) { if (s.at(i) < s.at(j)) { u.at(k) = s.at(i); i++; } else { u.at(k) = s.at(j)

问题 I need to implement a function which does a k-way merge sort on an unsorted array or integers. The function takes in two parameters, an integer K, which is the "way" of the sort and always a power of 2. The second parameter is the array of integers to be sorted, whose length is also a power of 2. The function is to return an array containing the sorted elements. So far, I know how to implement a regular merge sort. How would I modify this code so that it implements a K-way merge sort? (Note:

问题 I am new to rust programming. I wanted to implement merge sort with recursion. Here is my code: fn merge(a: &mut Vec<u32>, b: &mut Vec<u32>) -> Vec<u32> { let mut temp: Vec<u32> = Vec::new(); println!("The digit is {}", a[0]); while a.len() > 0 && b.len() > 0 { if a[0] > b[0] { temp.push(a[0]); a.pop(); } else { temp.push(b[0]); b.pop(); } } while a.len() > 0 { temp.push(a[0]); a.pop(); } while b.len() > 0 { temp.push(b[0]); b.pop(); } temp } fn merge_sort(v: &mut Vec<u32>) -> Vec<u32> {

问题 I am new to rust programming. I wanted to implement merge sort with recursion. Here is my code: fn merge(a: &mut Vec<u32>, b: &mut Vec<u32>) -> Vec<u32> { let mut temp: Vec<u32> = Vec::new(); println!("The digit is {}", a[0]); while a.len() > 0 && b.len() > 0 { if a[0] > b[0] { temp.push(a[0]); a.pop(); } else { temp.push(b[0]); b.pop(); } } while a.len() > 0 { temp.push(a[0]); a.pop(); } while b.len() > 0 { temp.push(b[0]); b.pop(); } temp } fn merge_sort(v: &mut Vec<u32>) -> Vec<u32> {