Question

Glven a positive integer number and two strings S1
and S2. The task is to create another string Str3 by
merging both strings with a group of N characters
alternately, starting with S1.
Program Editor
Example 1:
Input
goby - 51
ode-S2
2-N
Output
goodbye
Explanation:
S1*goby" and S2="ode"
N = 2.
From S1, take 2 characters because N = 2; after that
take 2 characters from S2. Repeat these steps for
both strings till the end
So the output will be "goodbye".
​

Answer 1

Program in Java:

import java.util.*;

public class MyClass

{

   public static void main(String args[])

   {

       Scanner Sc = new Scanner(System.in);

       String S1, S2, S3 = "";

       int N;

       System.out.print("Enter first word : ");

       S1 = Sc.next();

       System.out.print("Enter second word : ");

       S2 = Sc.next();

       System.out.print("Enter a number : ");

       N = Sc.nextInt();

       while(S1.length()>=N && S2.length()>=N)

       {

           S3 = S3 + S1.substring(0,N) + S2.substring(0,N);

           S1 = S1.substring(N,S1.length());

           S2 = S2.substring(N,S2.length());

       }

       if(S1.length() != 0)

       {

           S3 = S3 + S1;

       }

       if(S2.length() != 0)

       {

           S3 = S3 + S2;

       }

       System.out.print("New word : " + S3);

   }

}

Output:

Enter first word : goby

Enter second word : ode

Enter a number : 2

New word : goodbye