Java: Find the longest substring appears at both ends of a given string
Java String: Exercise-93 with Solution
Write a Java program to find the longest substring that appears at both ends of a given string.
Visual Presentation:
Sample Solution:
Java Code:
import java.util.*;
// Define a class named Main
public class Main {
// Method to find the longest substring that appears at both ends of the given string
public String appearInBothEnds(String stng) {
int l = stng.length(); // Get the length of the given string
String f_str = ""; // Initialize a string to store the found substring
String tmp = ""; // Initialize a temporary string
// Loop through the characters of the given string
for (int i = 0; i < l; i++) {
tmp += stng.charAt(i); // Add the current character to the temporary string
int t_len = tmp.length(); // Get the length of the temporary string
// Check if the temporary string is present both at the beginning and end of the main string
if (i < l / 2 && tmp.equals(stng.substring(l - t_len, l))) {
f_str = tmp; // Update the found substring if a match is found
}
}
return f_str; // Return the longest substring appearing at both ends of the string
}
// Main method to execute the program
public static void main(String[] args) {
Main m = new Main(); // Create an instance of the Main class
String str1 = "playersplay"; // Given string
// Display the given string and the longest substring appearing at both ends
System.out.println("The given string is: " + str1);
System.out.println("The longest substring in the string is: " + m.appearInBothEnds(str1));
}
}
Sample Output:
The given string is: playersplay The longest substring in the string is: play
Flowchart:

Java Code Editor:
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Next: Write a Java program to find the longest mirror image string at the both ends of a given string.
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