Question

Write a program whose input is a character and a string, and whose output indicates the number of times the character appears in the string. Ex: If the input is: n Monday, the output is:

Answer 1

Answer:

import java.util.Scanner;

public class ANot {

   public static void main(String[] args) {

       System.out.println("Enter a character");

       Scanner in = new Scanner(System.in);

       char character = in.next().charAt(0);

       System.out.println("Enter a string");

       String string = in.next();

//Calling the method        

System.out.println(countChar(character,string));

   }

   public static int countChar(char a, String in){

       int counter =0; // initialize counter

       for (int i=0;i<in.length();i++){

           if(a == in.charAt(i))

               counter++;

       }

       return counter;

   }

}

Explanation:

This program is written in Java Programming language.

We created a method countChar that returns a integer called counter

Using a for loop in the method we iterate through the string object and check (a == in.charAt(i)) so as to increase counter when ever there is a match.

In the main method a Scanner Class is used to request user to input a character and a string which is passed to countChar when called.

NOTE that this program has considered lower case letters to be different from upper cases as such a is not equal to A