#31

// As funções abaixo estão sintaticamente corretas, mas não gerando os resultados corretos.

// Observe os testes e veja como você pode corrigi-los.

 

function mood() {

let isHappy = true;

if (isHappy) {

return "I am happy";

} else {

return "I am not happy";

}

}

function greaterThan10() {

let num = 10;

let isBigEnough;

if (isBigEnough) {

return "num is greater than or equal to 10";

} else {

return "num is not big enough";

}

}

function sortArray() {

let letters = ["a", "n", "c", "e", "z", "f"];

let sortedLetters;

return sortedLetters;

}

function first5() {

let numbers = [1, 2, 3, 4, 5, 6, 7, 8];

let sliced;

return sliced;

}

function get3rdIndex(arr) {

let index = 3;

let element;

return element;

}

/* ======= TESTS - DO NOT MODIFY ===== */

function test(test_name, expr) {

let status;

if (expr) {

status = "PASSED";

} else {

status = "FAILED";

}

console.log(`${test_name}: ${status}`);

}

function arraysEqual(a, b) {

if (a === b) return true;

if (a == null || b == null) return false;

if (a.length != b.length) return false;

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

if (a[i] !== b[i]) return false;

}

return true;

}

test("mood function works", mood() === "I am not happy");

test(

"greaterThanTen function works",

greaterThan10() === "num is greater than or equal to 10"

);

test(

"sortArray function works",

arraysEqual(sortArray(), ["a", "c", "e", "f", "n", "z"])

);

test("first5 function works", arraysEqual(first5(), [1, 2, 3, 4, 5]));

test(

"get3rdIndex function works - case 1",

get3rdIndex(["fruit", "banana", "apple", "strawberry", "raspberry"]) ===

"strawberry"

);

test(

"get3rdIndex function works - case 2",

get3rdIndex([11, 37, 62, 18, 19, 3, 30]) === 18

);