# Implement Insertion sort Program in C1 min read

In this tutorial, we will learn and write a C program to implement insertion sort. Before that you may go through the following topics in C:

## Insertion Sort Algorithm

Insertion sort is a simple sorting algorithm that sorts the elements in an array by comparing the values at index with all its prior elements. This process takes more time so it is only used for small data set.

This sorting takes the first index element and compares it to its largest value in an array and it moves the element to its right location.

## C Program to implement Insertion sort

Question: Insertion sort program in C using function.

Output:

`Enter the number of elements: 6Enter 6 Elements:551477211599Array after sorting:2 14 55 77 99 115`

## Time Complexity of Heap Sort:

• Best case:  `0(n)`
• Average case:  `0(n^2)`
• Worst case:  `0(n^2)`

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