Detect Alternating Pattern

Code

#include <stdio.h>

int is_alternating_pattern(int *mem, int k) {
    // Write your pointer logic here
 int *p = mem;          // start pointer
    int *next = mem + 1;   // next pointer

    for (int i = 0; i < k - 1; i++) {
        if (*p == *next) {
            return 0;      // two equal values → NOT alternating
        }
        p++;
        next++;
    }
    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