60. Detect Alternating Pattern

#include <stdio.h>

int is_alternating_pattern(int *mem, int k) {
    // Write your pointer logic here
    int first = *mem;
    int second = *(mem + 1);
    for (int i = 0; i < k; i++) {
        int check_1 = *mem;
        if (i % 2 == 0) {
            if (check_1 != first) {
                return 0;
            }
        } else {
            if (check_1 != second) {
                return 0;
            }
        }
        mem++;
    }
    return 1;
}

int main() {
    int n, k, arr[100];
    scanf("%d %d", &n, &k);

    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    int res = is_alternating_pattern(arr, k);
    printf("%d", res);

    return 0;
}