Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int i=0;
    int j=1;
    int flag=1;
    while(i<n){
        if(*(mem+j) - *(mem+i) == j - i){
            flag++;
        }else{
            flag = 1;
            i = j;
        }
        if(flag == 3) return i;
        j++;
    }
    return -1;
}

int main() {
    int n, arr[100];
    scanf("%d", &n);

    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    int res = find_pattern(arr, n);
    printf("%d", res);

    return 0;
}

Solving Approach