Is Lucky

Ticket numbers usually consist of an even number of digits.

A ticket number is considered lucky if the sum of the first half of the digits is equal to the sum of the second half.

Given a ticket number n, determine if it's lucky or not.

Example:

For n = 1230, the output should be isLucky(n) = true.
For n = 239017, the output should be isLucky(n) = false.

Input/Output:

[execution time limit] 5 seconds (ts)
[input] integer n
- A ticket number represented as a positive integer with an even number of digits.
- Guaranteed constraints:
  - $10 \le n \le 10^{6}$
[output] boolean
- true if n is a lucky ticket number.
- false otherwise.

Solution:

Code
Tests