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Java Programming Exercies

Java String Exercises: Read a string and an int n, return a string made of the first and last n characters from the string

Java String: Exercise-61 with Solution

Write a Java program to read a string and an int n, return a string made of the first and last n characters from the string.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public String nTwice(String str, int n) 
{
  return str.substring(0,n) + str.substring(str.length()- n, str.length());
}
public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "Welcome";
	  int n1 =  3;
	  
      System.out.println("The given strings is: "+str1);
	  System.out.println("The given numbers is: "+n1);
      System.out.println("The new string is: "+m.nTwice(str1,n1));
	  }
}

Sample Output:

The given strings is: Welcome
The given numbers is: 3
The new string is: Welome

Pictorial Presentation:

Java String Exercises: Read a string and an int n, return a string made of the first and last n characters from the string

Flowchart:

Flowchart: Java String Exercises - Read a string and an int n, return a string made of the first and last n characters from the string

Java Code Editor:

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Previous: Write a Java program to read two strings append them together and return the result.If the strings are different lengths, omit chars from the beginning of longer string and make them equal length.
Next: Write a Java program to read a string and return true if "good" appears starting at index 0 or 1 in the given string.

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