Detect Alternating Pattern

Code

#include <stdio.h>

int is_alternating_pattern(int *mem, int k) {
    // Write your pointer logic here
    if (k < 2) return 1;

    int val1 = *mem;
    int val2 = *(mem + 1);

    for (int i = 0; i < k; i++) {
        int next = (i % 2 == 0) ? val1 : val2;
        if (*mem != next) 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;
}

Solving Approach