Count Positive Even Numbers

ArrayCounting

Given an array of integers, return the count of positive even numbers from the array.

Example 1

Input

[
  2,
  -3,
  4,
  5,
  -6
]

Output

Explanation. There are 2 positive even numbers: 2 and 4.

Example 2

Input

[
  -1,
  -2,
  -3,
  -4
]

Output

Explanation. There are no positive even numbers in the array.

Example 3

Input

[
  0,
  2,
  6,
  9,
  11,
  12
]

Output

Explanation. There are 3 positive even numbers: 2, 6, and 12.

Example 4

Input

[]

Output

Explanation. The array is empty, so there are no positive even numbers.

Follow-up: How would you handle very large arrays efficiently?

Constraints:

The input array can contain zero and negative integers, but will always be non-null. Array length will not exceed 1000 elements.