Homework 01 Types and Arrays Exercise

// Question 1
// Convert every price in `prices` into a number using a function that returns an array.
// Store the resulting array in a variable named `numPricesArray`. You should not mutuate `prices`.
// To see your work, log out the string "numPricesArray" and the actual variable afterwards.

// function convert(){
//     Number(prices);
//     console.log(convert);
// }
// WRITE QUESTION 1 ANSWER HERE

var prices = ['100', '125', '129', '37', '38', '75', '87', '94', '300', '301',
    '305', '50', '0.30', '0.01', '0.5', '5', '15', '24', '35', '1041', '1', '17',
    '21', '28', '97', '6', '10', '49', '65', '89', '6', '10', '49', '65', '89'];

console.log(prices);

var numPricesArray = prices.map(Number);
console.log("numPricesArray", numPricesArray);

// Question 2
// Check that all the elements in `numPricesArray` are numbers.
// Your code will return a boolean, so store that boolean in a variable named `onlyPrices`.
// Log out the string "onlyPrices" and the actual variable.
// If the value of the `onlyPrices` is not true, your answer to question 1, question 2, or both is incorrect.

// WRITE QUESTION 2 ANSWER HERE

var onlyPrices = !numPricesArray.some(isNaN);
console.log('onlyPrices', onlyPrices);


// Question 3
// At this point, we've confirmed that all the elements in `numPricesArray` are numbers.
// Now that we've done that check, we can safely compare against those elements as numbers.
// We're on a budget here so check if any of the prices are less than $25. Store this value in a variable named `cutoffPrice`.
// Store the boolean in a variable named `lowPricesPresent`, and log it out like the previous questions.
// Hint: Do not compare against "$25" or $25.
// Hint: We can inspect the array with our eyes, so `lowPricesPresent` should be true.

var cutOffPrice = 25;
console.log(cutOffPrice);

var lowPricesPresent = numPricesArray.some(x => x > cutOffPrice);
console.log('lowPricesPresent', lowPricesPresent);

// Question 4
// Hey, we can buy things! Whoo!
// Let's filter out all the prices that are greater than our cutoff.
// (We're feeling splurgy, so our cutoff price is fair game.)
// Store these prices in a variable named `inBudgetPrices`.
// Be sure to log it out like the previous questions.


var inBudgetPrices = numPricesArray.filter(function(element) {
  return(element > 25);
})
console.log(inBudgetPrices);


// Question 5
// The good news is we bought everything in `inBudgetPrices`.
// The bad news is our accountant is a huge jerk, so we can't give him the array `inBudgetPrices`.
// He wants a string of the prices, with each price separated by a comma and a space.
// Store the string of the prices in a new variable with a name of your choosing.
// Be sure to camelCase the variable name! Our accountant expects it.



var BackToString = inBudgetPrices.filter(function(element) {
  return(element.toString() + "." + " ");
});
console.log(BackToString);