Detect Alternating Pattern

Code

#include <stdio.h>
#include <stdbool.h>

int is_alternating_pattern(int *mem, int k) {
    // Write your pointer logic here

    int ret = 1;

    int* ptr = mem;

    bool one_pattern = false;
    
    if(*ptr == 1)
    {
        one_pattern = true;
    }

    ptr++;
    int element = 0;
    for(int i = 1;i <k; ++i)
    {
        if(one_pattern)
        {
            if(*ptr != element)
            {
                ret = 0;
                break;
            }
            element = !element;
        }
        else
        {
            if(*ptr != !element)
            {
                ret = 0;
                break;
            }
            element = !element;
        }
        ptr++;
    }
    return ret;
}

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