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Practical Number 7

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6 views2 pages

Practical Number 7

Uploaded by

17.vikashverma
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Practical Number: 7

Write a program to sort an array of integers in ascending order using Insertion


sort.
Sol: Insertion sort is a simple sorting algorithm that works similar to the way you
sort playing cards in your hands. The array is virtually split into a sorted and an
unsorted part. Values from the unsorted part are picked and placed at the correct
position in the sorted part.

#include<iostream>
using namespace std;

void insertionSort(int arr[], int n){


for(int i=1; i<n; i++){
int ptr= arr[i];
int j= i-1;

while(arr[j] > ptr && j>=0){


arr[j+1] = arr[j];
j--;
}
arr[j+1]= ptr;
}
}

int main(){
int n;
cout<<"Enter number of element in array : ";
cin>>n;

18
int arr[n];
cout<<endl<<"Enter element in array : ";
for(int i=0; i<n; i++){
cin>>arr[i];
}

insertionSort(arr,n);
cout<<endl<<"Array after sorting : ";
for(int i=0; i<n; i++){
cout<<arr[i]<<" ";
}
return 0;
}

Output:

19

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