InsertionSort.java

/*
Copyright (C) Deepali Srivastava - All Rights Reserved
This code is part of DSA course available on CourseGalaxy.com    
*/

import java.util.Scanner;

public class InsertionSort 
{
	private InsertionSort(){} //this class is not for instantiation
	
	public static void sort(int[] a, int n) 
	{
		int i,j,temp;
		for(i=1; i<n; i++)
		{
			temp=a[i]; 
			
			for(j=i-1; j>=0 && a[j]>temp; j--)
				a[j+1]=a[j];
			
			a[j+1]=temp;
		}
	}
	
	public static void main(String[] args)
	{
		int i,n;
		int[] a = new int[20];
		Scanner scan = new Scanner(System.in);	
		
		System.out.print("Enter the number of elements : ");
		n = scan.nextInt();
				
		for(i=0; i<n; i++)
		{
			System.out.print("Enter element " + (i+1) + " : ");
			a[i] = scan.nextInt();
		}
		
		sort(a,n);
		
		System.out.println("Sorted array is : ");
		for(i=0; i<n; i++)
			System.out.print(a[i] + " ");
		System.out.println();
		scan.close();
	}
}