1234. [S/W 문제해결 기본] 10일차 - 비밀번호(D3)

#include <stdio.h>
 
int main(void) {
    for (int test_case = 1; test_case <= 10; test_case++) {
        int n;
        scanf("%d ",&n);
        int arr[101] = { 0, };
        for (int i = 0; i < n; i++) {
            scanf("%1d", &arr[i]);
        }
        int check = 0;
        int temp = n;
        while (true) {
            if (check == 1) {
                break;
            }
            check = 1;
            for (int i = 0; i < temp - 1; i++) {
                if (arr[i]==arr[i+1]) {
                    arr[i] = -1;
                    arr[i + 1] = -1;
                    check = 0;
                }
            }
            if (check == 0) {
                for (int i = 0; i < temp; i++) {
                    int cnt = 0;
                    if (arr[i] == -1) {
                        cnt += 2;
                        for (int k = i + 2; k < temp; k++) {
                            //if (arr[k] != -1) {
                                
                                for (int j = 0; j < temp-k; j++) {
                                    arr[i+j] = arr[k+j];
                                    
                                }
                                break;
                            //}
                        }
                        temp = temp - cnt;
                        i--;
                    }
                }
            }
        }
        printf("#%d ",test_case);
        for (int i = 0; i < temp; i++) {
                printf("%d", arr[i]);
        }
        printf("\n");
    }
}