Write a program that gets a String s and a character c as user input, and output

Question

Write a program that gets a String s and a character c as user input, and outputs the number of occurrences of c in S.
NOTE: Your implementation must include the definition/implementation and use/calling of the recursive method charCount, which is passed a String and a character to its parameter variables, and returns the number of occurrences of the character in the String. —— Use the Design Recipe to design the algorithm for each method (main and others), showing all work as comments in the source code (.java) file. Using Eclipse, implement the algorithm as a program. Write a program that gets a String s and a character c as user input, and outputs the number of occurrences of c in S.
NOTE: Your implementation must include the definition/implementation and use/calling of the recursive method charCount, which is passed a String and a character to its parameter variables, and returns the number of occurrences of the character in the String. —— Use the Design Recipe to design the algorithm for each method (main and others), showing all work as comments in the source code (.java) file. Using Eclipse, implement the algorithm as a program. Write a program that gets a String s and a character c as user input, and outputs the number of occurrences of c in S.
NOTE: Your implementation must include the definition/implementation and use/calling of the recursive method charCount, which is passed a String and a character to its parameter variables, and returns the number of occurrences of the character in the String. —— Use the Design Recipe to design the algorithm for each method (main and others), showing all work as comments in the source code (.java) file. Using Eclipse, implement the algorithm as a program. Use the Design Recipe to design the algorithm for each method (main and others), showing all work as comments in the source code (.java) file. Using Eclipse, implement the algorithm as a program.

Explanation / Answer

import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner reader = new Scanner(System.in);
String str = reader.nextLine();
char c = reader.next().trim().charAt(0);
int ans = charCount(str,c);
System.out.println(ans);
}

public static int charCount(String str,char c)
           {
               int length = str.length();
          
               if(str.charAt(0)==c)
               {
            if(length>1)
            {
            String temp =str.substring(1);
            return 1+charCount(temp,c);
            }
            else
            {
            return 1;
            }
               }
               else
               {
               if(length>1)
            {
                        String temp =str.substring(1);
                        return charCount(temp,c);
            }
            else
            {
            return 0;
            }
                }
             };
}

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.