Java String Exercises: Return the substring that is between the first and last appearance of the substring 'toast' in the given string, or return the empty string if substirng 'toast' does not exists
Java String: Exercise-69 with Solution
Write a Java program to return the substring that is between the first and last appearance of the substring 'toast' in the given string,or return the empty string if substirng 'toast' does not exists.
Sample Solution:
Java Code:
import java.util.*; public class Main { public String pickMiddleOfBread(String stng) { int len = stng.length(); String tmpString = ""; String resultString = ""; int st = 0; int en = 0; boolean found = false; if (len <= 10) return ""; for (int i = 0; i < len - 4; i++) { tmpString = stng.substring(i, i+5); if (tmpString.equals("toast") && found == true) en = i; if (tmpString.equals("toast") && found == false) { st = i+5; found = true; } } resultString = stng.substring(st,en); return resultString; } public static void main (String[] args) { Main m= new Main(); String str1 = "sweettoastbuttertoast"; System.out.println("The given strings is: "+str1); System.out.println("The new string is: "+m.pickMiddleOfBread(str1)); } }
Sample Output:
The given strings is: sweettoastbuttertoast The new string is: butter
Pictorial Presentation:
Flowchart:
Java Code Editor:
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