Detect Alternating Pattern

Code

#include <stdio.h>

int is_alternating_pattern(int *mem, int k) {
    if(k <= 1)
        return 0;
    int *p = mem;
    int *q = mem + 1;
    while(--k){
        if(*p == *q)
            return 0;
        p++;
        q++;
    }
    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