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project-2.js
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180 lines (154 loc) · 4.08 KB
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// Do not change any of the function names
const getBiggest = (x, y) => {
if (x > y) {
return x;
} return y;
// x and y are integers. Return the larger integer
// if they are the same return either one
};
const greeting = (language = 'English') => {
if (language === 'German') {
return 'Guten Tag!';
} else if (language === 'Spanish') {
return 'Hola!';
} return 'Hello!';
// return a greeting for three different languages:
// language: 'German' -> 'Guten Tag!'
// language: 'English' -> 'Hello!'
// language: 'Spanish' -> 'Hola!'
// if language is undefined return 'Hello!'
};
const isTenOrFive = (num) => {
if (num === 10 || num === 5) {
return true;
} return false;
// return true if num is 10 or 5
// otherwise return false
};
const isInRange = (num) => {
if (num > 20 && num < 50) {
return true;
} return false;
// return true if num is less than 50 and greater than 20
};
const isInteger = (num) => {
if (num === Math.floor(num)) {
return true;
} return false;
// return true if num is an integer
// 0.8 -> false
// 1 -> true
// -10 -> true
// otherwise return false
// hint: you can solve this using Math.floor
};
const fizzBuzz = (num) => {
if (num % 3 === 0 && num % 5 === 0) {
return 'fizzbuzz';
} else if (num % 5 === 0) {
return 'buzz';
} else if (num % 3 === 0) {
return 'fizz';
} return num;
// if num is divisible by 3 return 'fizz'
// if num is divisible by 5 return 'buzz'
// if num is divisible by 3 & 5 return 'fizzbuzz'
// otherwise return num
};
const isPrime = (num) => {
if (num < 2) {
return false;
} for (let i = 2; i < num; i++) {
if (num % i === 0) {
return false;
} return true;
}
// return true if num is prime.
// otherwise return false
// hint: a prime number is only evenly divisible by itself and 1
// hint2: you can solve this using a for loop
// note: 0 and 1 are NOT considered prime numbers
};
const returnFirst = arr => arr.shift();
// return the first item from the array
const returnLast = arr => arr.pop();
const getArrayLength = arr => arr.length;
// return the length of the array
const incrementByOne = (arr) => {
for (let i = 0; i < arr.length; i++) {
arr[i]++;
} return arr;
// arr is an array of integers
// increase each integer by one
// return the array
};
const addItemToArray = (arr, item) => {
arr.push(item);
return arr;
};
// add the item to the end of the array
// return the array
const addItemToFront = (arr, item) => {
arr.unshift(item);
return arr;
// add the item to the front of the array
// return the array
// hint: use the array method .unshift
};
const wordsToSentence = (words) => {
return words.join(' ');
// words is an array of strings
// return a string that is all of the words concatenated together
// spaces need to be between each word
// example: ['Hello', 'world!'] -> 'Hello world!'
};
const contains = (arr, item) => {
if (arr.includes(item)) {
return true;
} return false;
// check to see if item is inside of arr
// return true if it is, otherwise return false
};
const addNumbers = (numbers) => {
let sum = 0;
for (let i = 0; i < numbers.length; i++) {
sum += numbers[i];
} return sum;
// numbers is an array of integers.
// add all of the integers and return the value
};
const averageTestScore = (testScores) => {
let sum = 0;
for (let i = 0; i < testScores.length; i++) {
sum += testScores[i];
} return sum / testScores.length;
// testScores is an array. Iterate over testScores and compute the average.
// return the average
};
const largestNumber = (numbers) => {
return Math.max(...numbers);
// numbers is an array of integers
// return the largest integer
};
// Do not modify code below this line.
// --------------------------------
module.exports = {
getBiggest,
greeting,
isTenOrFive,
isInRange,
isInteger,
fizzBuzz,
isPrime,
returnFirst,
returnLast,
getArrayLength,
incrementByOne,
addItemToArray,
addItemToFront,
wordsToSentence,
contains,
addNumbers,
averageTestScore,
largestNumber
};