Detect Alternating Pattern

Code

#include <stdio.h>
#include <math.h>


int is_alternating_pattern(int *mem, int k) {
    // Write your pointer logic here
    int index = 0;
    for(int i = 0 ; i < k ; i++){
        if(i < k){
            if(abs(*(mem + i + 1 ) - *(mem + i)) == 1){
                ++index;
                if(k - index == 1) return 1;
            }

        }        
    }
    
    return 0;
}

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