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Java String Exercises: Read a string, if the first or last characters are same return the string without those characters otherwise return the string unchanged

Java String: Exercise-65 with Solution

Write a Java program to read a given string and if the first or last characters are same return the string without those characters otherwise return the string unchanged.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public String excludeT(String stng)
{
  if (stng.length() == 0)
    return stng;
  if (stng.length() == 1)
  {
    if (stng.charAt(0) == 't')
      return "";
    else
      return stng;
  }
  if (stng.charAt(0) == 't')
    stng = stng.substring(1,stng.length());
  if (stng.charAt(stng.length()-1) == 't')
    stng = stng.substring(0,stng.length()-1);
  return stng;
}
public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "testcricket";
      System.out.println("The given strings is: "+str1);
      System.out.println("The new string is: "+m.excludeT(str1));
	  }
}

Sample Output:

The given strings is: testcricket
The new string is: estcricke

Pictorial Presentation:

Java String Exercises: Read a string, if the first or last characters are same return the string without those characters otherwise return the string unchanged

Flowchart:

Flowchart: Java String Exercises - Read a string, if the first or last characters are same return the string without those characters otherwise return the string unchanged

Java Code Editor:

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Previous: Write a Java program to read a string and if a substring of length two appears at both its beginning and end,return a string without the substring at the beginning otherwise, return the original string unchanged.
Next: Write a Java program to read a string and return the string without the first two characters. Keep the first character if it is 'g' and keep the second character if it is 'h'.

What is the difficulty level of this exercise?



Java: Tips of the Day

Check if at least two out of three booleans are true:

Rather than writing:

if (someExpression) {
    return true;
} else {
    return false;
}

Write:

return someExpression;

As for the expression itself, something like this:

boolean atLeastTwo(boolean a, boolean b, boolean c) {
    return a ? (b || c) : (b && c);
}

or this (whichever you find easier to grasp):

boolean atLeastTwo(boolean a, boolean b, boolean c) {
    return a && (b || c) || (b && c);
}

Ref: https://bit.ly/2OYPQD7