백준 5525 IOIOI(Java)

https://www.acmicpc.net/problem/5525

5525번: IOIOI

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Java 코드

 

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import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);

    int check = 0;
    int count = 0;
    int n = sc.nextInt();
    int m = sc.nextInt();
    char[] arr = sc.next().toCharArray();


    for(int i = 1; i < m - 1; i++) {
      if(arr[i - 1] == 'I' && arr[i] == 'O' && arr[i + 1] == 'I') {
        check++;
        if(check == n) {
          count++;
          check--;
        }
        i++;
      }
      else check = 0;
    }
    
    System.out.println(count);
  }
}