[Codeforces] 266A - Stones on the Table (Java)

https://codeforces.com/problemset/problem/266/A

Solution

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Solution {
    public static int NoSequenceRGB(int n, String s) {
        int answer = 0;
        char[] charArray = s.toCharArray();
        for (int i = 0; i < charArray.length - 1; i++) {
            if (charArray[i] == charArray[i + 1]) {
                answer++;
            }
        }
        return answer;
    }

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());
        String s = br.readLine();
        System.out.print(NoSequenceRGB(n, s));
        br.close();
    }
}