insertion sorting

Solutions on MaxInterview for insertion sorting by the best coders in the world

showing results for - "insertion sorting"
Enoch
25 Oct 2017
1#insertion sort
2def insert(arr):
3    for i in range(1,len(arr)):
4        while arr[i-1] > arr[i] and i > 0:
5            arr[i], arr[i-1] = arr[i-1], arr[i]
6            i -= 1 
7    return arr 
8arr = [23, 55, 12, 99, 66, 33]
9print(insert(arr))
Juan Esteban
15 Aug 2018
1# another method similar to insertion sort
2
3def insertionSort(arr):
4    for i in range(1, len(arr)):
5        k = i
6        for j in range(i-1, -1, -1):
7            if arr[k] < arr[j]:  # if the key element is smaller than elements before it
8                temp = arr[k]  # swapping the two numbers
9                arr[k] = arr[j]
10                arr[j] = temp
11
12                k = j  # assigning the current index of key value to k
13        
14
15arr = [5, 2, 9, 1, 10, 19, 12, 11, 18, 13, 23, 20, 27, 28, 24, -2]
16
17print("original array \n", arr)
18insertionSort(arr)
19print("\nSorted array \n", arr)
20
Manuel
01 Nov 2019
1def insertionSort(arr): 
2    for i in range(1, len(arr)): 
3        key = arr[i] 
4        j = i-1
5        while j >= 0 and key < arr[j] : 
6                arr[j + 1] = arr[j] 
7                j -= 1
8        arr[j + 1] = key 
Carl
20 Sep 2020
1#include <bits/stdc++.h>
2
3using namespace std; 
4
5void insertionSort(int arr[], int n)  
6{  
7    int i, temp, j;  
8    for (i = 1; i < n; i++) 
9    {  
10        temp = arr[i];  
11        j = i - 1;  
12
13        while (j >= 0 && arr[j] > temp) 
14        {  
15            arr[j + 1] = arr[j];  
16            j = j - 1;  
17        }  
18        arr[j + 1] = temp;  
19    }  
20}
21
22int main()  
23{  
24    int arr[] = { 1,4,2,5,333,3,5,7777,4,4,3,22,1,4,3,666,4,6,8,999,4,3,5,32 };  
25    int n = sizeof(arr) / sizeof(arr[0]);  
26
27    insertionSort(arr, n);  
28
29    for(int i = 0; i < n; i++){
30        cout << arr[i] << " ";
31    }
32
33    return 0;  
34}  
Gianluca
27 Oct 2019
1// Por ter uma complexidade alta,
2// não é recomendado para um conjunto de dados muito grande.
3// Complexidade: O(n²) / O(n**2) / O(n^2)
4// @see https://www.youtube.com/watch?v=TZRWRjq2CAg
5// @see https://www.cs.usfca.edu/~galles/visualization/ComparisonSort.html
6
7function insertionSort(vetor) {
8    let current;
9    for (let i = 1; i < vetor.length; i += 1) {
10        let j = i - 1;
11        current = vetor[i];
12        while (j >= 0 && current < vetor[j]) {
13            vetor[j + 1] = vetor[j];
14            j--;
15        }
16        vetor[j + 1] = current;
17    }
18    return vetor;
19}
20
21insertionSort([1, 2, 5, 8, 3, 4])
Salvatore
14 Oct 2019
1import java.util.ArrayList;
2import java.util.Arrays;
3import java.util.Scanner;
4
5public class InsertionSorting {
6    public static Scanner scanner = new Scanner(System.in);
7    public static void main(String[] argh){
8    int[] arrNotSorted = newArrInitilizer();
9    enterValues(arrNotSorted);
10    sortArray(arrNotSorted);
11    print(arrNotSorted);
12
13    }
14  	//Print Array
15    public static void print(int[] arr){
16            System.out.print(Arrays.toString(arr));
17    }
18  
19	/* looping from "i"(the incremented index in) ==> function
20    public static int[] sortArray(int [] unsortedArr)
21   	first we initilize an integer "value"= Array[from])
22    this will be assigned later to the Array in the minmum value index 
23    
24    and while (from > 0) && (Array[from-1] > value) 
25    we assign every next value to the previous one 
26    
27     eventually we decrement ("from")
28   */
29    public static void insertionSorting(int [] toBesorted, int from){
30        int value = toBesorted[from];
31        while(from > 0 && toBesorted[from-1] > value){
32            toBesorted[from] = toBesorted[from-1];
33         --from;
34        }
35
36        toBesorted[from] = value;
37
38    }
39 	
40	/* Looping from index = 1, array with size one concidered sorted) 
41    later "From" will be assigned to i in the function above */
42    public static int[] sortArray(int [] unsortedArr){
43        for(int i = 1 ; i < unsortedArr.length ; ++i){
44            insertionSorting(unsortedArr,i);
45        }
46
47        return unsortedArr;
48    }
49
50  
51  
52    public static int[] newArrInitilizer() {
53        System.out.println("Enter Array Size .");
54        int arrSize = scanner.nextInt();
55        int[] arr = new int[arrSize];
56        return arr;
57    }
58		
59  
60  
61    public static int [] enterValues(int[] arr){
62        System.out.println("Array being initlized randomly with "+arr.length+" values.");
63        for(int i = 0 ; i< arr.length ; ++i){
64            arr[i] = (int) (Math.random()*10);
65        }
66        return  arr;
67    }
68}
69
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