Find the First & Last Occurrence in A String in JAVA

 

import java.util.*;

public class Recursion2 {

 public static int first = -1;

    public static int last = -1;

    // Find Occurrence ....

    public static void findOccurance(String str, int index, char element) {

        if (index == str.length()) {

            System.out.println("The First Occurance Found at Index : "+first);

            System.out.println("The Last Occurance Found at Index : "+last);

            return;

        }

        int current = str.charAt(index);

        if (current == element) {

            if (first == -1) {

                first = index;

            } else {

                last = index;

            }

        }

        findOccurance(str, index + 1, element);

    }

    public static void main(String[] args) {

        String str = "subhamoya";

 

        findOccurance(str, 0, 'a');

       

    }

}