Make a function that does arithmetic!

Make a function that does arithmetic!Codewars

Solution

JavaScript

const arithmetic = (a, b, operator) => {
  const functions = {
    'add': (a, b) => a + b,
    'subtract': (a, b) => a - b,
    'multiply': (a, b) => a * b,
    'divide': (a, b) => a / b,
  };
  
  return functions[operator](a, b);
};