isLuckyTicketNum.py

# 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] 4 seconds (py3)

    # [input] integer n

    # A ticket number represented as a positive integer with an even number of digits.

    # Guaranteed constraints:
    # 10 ≤ n < 106.

    # [output] boolean

    # true if n is a lucky ticket number, false otherwise.

def isLucky(n):
    numstr = str(n)
    half1 = numstr[:len(numstr)//2]
    half2 = numstr[len(numstr)//2:]
    sumhalf1 = sum([int(x) for x in half1])
    sumhalf2 = sum([int(x) for x in half2])
    
    return sumhalf1 == sumhalf2