const doubleTheNums = function(arr) {

for (let i = 0; i < arr.length; i++) {

arr[i] *= 2;

}

return arr;

};

// convert above function to an arrow function

// Write a function that prints out "Good morning, class!"

// Write a function that prints a random number (integer) between 1 and 100.

// use one of the functions above as the action parameter when you invoke the callback function below

const doMultipleTimes = (action, numTimes) => {

for (let i = 0; i < numTimes; i++) {

console.log(action());

}

};

// use doMultipleTimes with an anonymous function. for a challenge, try using

// the enclosing scope to hold a value between calls (suggestion: calculate

// subsequent powers of 2 on each call, starting from 2^0 = 1)