백준알고리즘 1316번 그룹 단어 체커

백준알고리즘

https://www.acmicpc.net/problem/1316

import java.util.Scanner;

public class Main2 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int count = Integer.parseInt(scan.nextLine().trim());
        boolean resultArray[] = new boolean[count];
        
        for(int c=0; c < count; c++) {
            String input = scan.nextLine().trim();
            boolean charCheck[] = new boolean[26];

            char ch = input.charAt(0);
            charCheck[(int)ch - 97] = true;
            resultArray[c] = true;
            
            for(int i=1; i < input.length(); i++) {
                char beforeCh = input.charAt(i-1);
                char presentCh = input.charAt(i);
                
                if(beforeCh == presentCh) {
                    continue;
                } else {
                    int index = (int)presentCh;
                    
                    if(charCheck[index - 97] == true) {
                        resultArray[c] = false;
                        break;
                    } else {
                        charCheck[index - 97] = true;
                        continue;
                    }
                }
            }
        }
        
        int result = 0;
        for(int i=0; i < resultArray.length; i++) {
            if(resultArray[i] == true) result++; 
        }
        
        System.out.println(result);
    }
}