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<title>Function Exercises</title>
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<body>
<script>
/*
Finish the following functions. Use only what we learned in class.
Don't hesitate to ask for help :)
*/
/*
The functions has 3 parameters: a, b, c. All parameters are numbers.
Return the smallest of the 3 parameters.
Example 1: min(5, 10, 1) returns 1
Example 2: min(-5, 10, 1) returns -5
*/
function min(a, b, c) {
// your code here
}
/*
Let's go to cinema! A ticket costs 5 EUR.
Your function takes two parameters:
- budget, the amount of money you have.
- friends, the number of friend that are going in total (including you).
Return true if the budget is enough to buy tickets for all friends, otherwise false.
*/
function canGoToCinema(budget, friends) {
// your code here
}
/*
A pizza place charges extra for toppings depending on the number of toppings.
The charges are as follows:
- 0 toppings are free (0 EUR)
- 1 topping costs 1 EUR
- 2 toppings costs 2 EUR
- 3 toppings cost 3 EUR
- 4 toppings cost 10 EUR (because of the emotional damage to the cook)
You're a developer who has to write a function that calculates the cost of the
pizza toppings. The waiter provides you with 4 boolean parameters that are all either
true or false.
Return the cost of the toppings for that pizza.
*/
function toppingCost(mushrooms, pepperoni, olives, pineapple) {
// your code here
}
/*
Congrats, you're done :) Don't touch the code below!
*/
</script>
<div id="mocha"></div>
<script src="https://unpkg.com/chai@^4/chai.js"></script>
<script src="https://unpkg.com/mocha@^10/mocha.js"></script>
<script>
mocha.setup("bdd");
const expect = chai.expect;
describe("Min", function () {
it("Min of positive numbers", function () {
expect(min(50, 102, 42)).to.equal(42);
expect(min(50, 41, 102)).to.equal(41);
expect(min(40, 42, 102)).to.equal(40);
});
it("Min of positive and negative numbers", function () {
expect(min(-1, -2, -3)).to.equal(-3);
expect(min(-1, -2, 3)).to.equal(-2);
expect(min(-3, -2, 3)).to.equal(-3);
});
it("Identical numbers", function () {
expect(min(1, 1, 1)).to.equal(1);
expect(min(2, 1, 1)).to.equal(1);
expect(min(1, 2, 1)).to.equal(1);
expect(min(1, 1, 2)).to.equal(1);
expect(min(2, 3, 3)).to.equal(2);
expect(min(3, 2, 3)).to.equal(2);
expect(min(3, 3, 2)).to.equal(2);
});
});
describe("Cinema", function () {
it("0 EUR, 1 friend", function () {
expect(canGoToCinema(0, 1)).to.equal(false);
});
it("4 EUR, 1 friend", function () {
expect(canGoToCinema(4, 1)).to.equal(false);
});
it("5 EUR, 1 friend", function () {
expect(canGoToCinema(5, 1)).to.equal(true);
});
it("9 EUR, 2 friends", function () {
expect(canGoToCinema(9, 2)).to.equal(false);
});
it("10 EUR, 2 friends", function () {
expect(canGoToCinema(10, 2)).to.equal(true);
});
it("11 EUR, 2 friends", function () {
expect(canGoToCinema(11, 2)).to.equal(true);
});
});
describe("Pizza", function () {
it("0 toppings", function () {
expect(toppingCost(false, false, false, false)).to.equal(0);
});
it("1 topping", function () {
expect(toppingCost(true, false, false, false)).to.equal(1);
expect(toppingCost(false, true, false, false)).to.equal(1);
expect(toppingCost(false, false, true, false)).to.equal(1);
expect(toppingCost(false, false, false, true)).to.equal(1);
});
it("2 toppings", function () {
expect(toppingCost(true, true, false, false)).to.equal(2);
expect(toppingCost(true, false, true, false)).to.equal(2);
expect(toppingCost(true, false, false, true)).to.equal(2);
expect(toppingCost(false, true, true, false)).to.equal(2);
expect(toppingCost(false, true, false, true)).to.equal(2);
expect(toppingCost(false, false, true, true)).to.equal(2);
});
it("3 toppings", function () {
expect(toppingCost(false, true, true, true)).to.equal(3);
expect(toppingCost(true, false, true, true)).to.equal(3);
expect(toppingCost(true, true, false, true)).to.equal(3);
expect(toppingCost(true, true, true, false)).to.equal(3);
});
it("4 toppings", function () {
expect(toppingCost(true, true, true, true)).to.equal(10);
});
});
mocha.run();
</script>
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