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 count = 0 ; 
    int flag = 0;
    int index = 0; 
    for (int i = 1 ; i < n  ; i ++)
    {
        if ( *(mem+ (i -1 ))  + 1== *(mem+ i) )
        {
            if (flag == 0)
            {
                index = i - 1; 
                flag = 1; 
            }
            
            count ++; 
            
        }
        if (count >= 3)
        {
            return index; 
        }
         


    }
    
    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

 

 

 

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Input

8 2 4 5 6 9 11 12 14

Expected Output

1