final-value-after-operations.py

# here is a programming language with only four operations and one variable X:

# ++X and X++ increments the value of the variable X by 1.
# --X and X-- decrements the value of the variable X by 1.
# Initially, the value of X is 0.

# Given an array of strings operations containing a list of operations, return the final value of X after performing all the operations.

class Solution:
    def finalValueAfterOperations(self, operations: List[str]) -> int:
        x = 0
        for i in operations:
            if '-' in i:
                x -= 1
            else:
                x += 1

        return x