/**
* Adds two numbers
* @param {number} a number 1
* @param {number} b number 2
*/
export function add(a, b) {
return a + b;
}
/**
* Subtracts two numbers
* @param {number} a number 1
* @param {number} b number 2
*/
export function subtract(a, b) {
return a - b;
}
/**
* Multiplies two numbers
* @param {number} a number 1
* @param {number} b number 2
*/
export function multiply(a, b) {
return a * b;
}
/**
* Divides two numbers
* @param {number} a number 1
* @param {number} b number 2
*/
export function divide(a, b) {
return a / b;
}
/**
* returns the sum of an array
* @param {Array<number>} arr Array
*/
export function sum(arr) {
if (typeof arr === "number") return arr;
let sum = 0;
arr.map(num => {
sum += num;
});
return sum;
}