PROGRAMMING FOR PROBLEM SOLVING LAB : Program 18

 Write a C program that sorts the given array of integers using insertion sort in ascending order.

// C program for insertion sort
#include <math.h>
#include <stdio.h>
  
/* Function to sort an array using insertion sort*/
void insertionSort(int arr[], int n)
{
    int i, key, j;
    for (i = 1; i < n; i++) 
    {
        key = arr[i];
        j = i - 1;
        while (j >= 0 && arr[j] > key) 
        {
            arr[j + 1] = arr[j];
            j = j - 1;
        }
        arr[j + 1] = key;
    }
    printf("\n sorted array using insertion sort \n");
}
  
// A utility function to print a sorted array of size n
void printArray(int arr[], int n)
{
    int i;
    for (i = 0; i < n; i++)
        printf("%d ", arr[i]);
    printf("\n");
}
  
// Driver code
int main()
{
    int arr[15],n,i;
   
    printf("enter number of elements in array \n");
    scanf("%d", &n);
   
    printf("enter array values to sort\n");
    for(i=0; i<n; i++)
    scanf("%d", &arr[i]);
   
    insertionSort(arr, n);
    printArray(arr, n);
  
    return 0;
}

OUTPUT:

enter number of elements in array 

8

enter array values to sort

43

23

56

76

35

59

31

42

sorted array using insertion sort 

23 31 35 42 43 56 59 76