Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    for (int i = 0; i < n - 2; i++) {
        int a = *(mem + i);
        int b = *(mem + i + 1);
        int c = *(mem + i + 2);

        if (b == a + 1 && c == b + 1) {
            return i;   // lấy bộ đầu tiên
        }
    }
    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