Merge Two Arrays 1

/*
Write a program to merge two arrays of integers by reading one number at a time from each array until 
one of the array is exhausted, and then concatenating the remaining numbers.
 Input: [23,60,94,3,102] and [42,16,74]
 Output: [23,42,60,16,94,74,3,102]
*/
 
 import java.util.*;
class Test2{
	public static void main(String args[]){
		Scanner sc= new Scanner(System.in);
		System.out.print("Enter the number of elements in the first array: ");
		int n=sc.nextInt(),i,j=0;
		int a1[]=new int[n];
		System.out.print("Enter the elements in the first array: ");
		for(i=0; i<n; i++)
			a1[i]=sc.nextInt();
		System.out.print("Enter the number of elements in the second array: ");
		int m=sc.nextInt();
		int a2[]=new int[n];
		System.out.print("Enter the elements in the first array: ");
		for(i=0; i<m; i++)
			a2[i]=sc.nextInt();
		int small;
		if(m>n)
			small=n;
		else
			small=m;
		int a3[]=new int[n+m];
		for(i=0; i<small;i++){
			a3[j++]=a1[i];
			a3[j++]=a2[i];
		}
		if(a1.length==small){
			for(i=small; i<m;i++)
				a3[j++]=a2[i];
		}else{
			for(i=small; i<n;i++)
				a3[j++]=a1[i];
		}
		for(i=0; i<m+n;i++)
			System.out.print(a3[i]+" ");
	}
}