final-value-after-operations.js

// There 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.

var finalValueAfterOperations = function (operations) {
    let x = 0

    for (let i of operations) {
        if (i.includes('-')) {
            x -= 1;
        } else {
            x += 1;
        }
    }

    return x;
};