Java String Exercises: Create a new string repeating every character twice of a given string

Java String: Exercise-82 with Solution

Write a Java program to create a new string repeating every character twice of a given string.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public String repeatAllTwice(String stng) 
{
  int l = stng.length();
  String newstring = "";
  for (int i = 0; i < l; i++) 
  {
    newstring += stng.substring(i,i+1) + stng.substring(i, i+1);
  }
  return newstring;
}

public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "welcome";
      System.out.println("The given string is: "+str1);
      System.out.println("The new string is: "+m.repeatAllTwice(str1));
	  }
}

Sample Output:

The given string is: welcome
The new string is: wweellccoommee

Pictorial Presentation:

Flowchart:

Java Code Editor:

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