048 - Accumulator Method Practice 4

Write a method header on line two with the following specs:

Returns: an integer Name: countA Parameters: a String called s Purpose: count the number of occurrences of 'a' or 'A' within s

 

Examples:

• countA("aaa") ==> 3
• countA("aaBBdf8k3AAadnklA") ==> 6

 

Hint: How do you write a for loop to loop through every letter of a string? You've done this multiple times already :)

 

---

 
class Main {
    public static int countA(String s)
    {
        int cnt=0;
        s=s.toLowerCase();
        for(int i=0;i<s.length();i++) {
            if(s.charAt(i)=='a') {
                cnt++;
            }
        }
        return cnt;
    }
    
    //test case below (dont change):
    public static void main(String[] args){
        System.out.println(countA("aaA")); //3
        System.out.println(countA("aaBBdf8k3AAadnklA")); //6
    }
}