Detect Alternating Pattern

Code

#include <stdio.h>

int is_alternating_pattern(int *mem, int k)
{
    // if (k > n || k <= 1)
        // return 0;

    int *p = mem;

    for (int i = 0; i < k - 1; i++)
    {
        if (*p == *(p + 1))
            return 0;

        p++;   // move pointer forward
    }

    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;
}

Solving Approach