Detect Alternating Pattern

Code

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


int is_alternating_pattern(int *mem, int k) {
    int i=0;
    int precCarac;
    bool patFound=false;
    while(i<k){
        if(patFound){
            if(*(mem+i)^1 == precCarac) precCarac^=1;
            else return 0;
        }

        if(!patFound){
            if(*(mem+i)==1 || *(mem+i)==0){
                precCarac = *(mem+i);
                patFound = true;
            }
        }
        i++;
    }

    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