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141 lines (123 loc) · 2.73 KB
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// Do not change any of the function names
const getBiggest = (x, y) => {
if (x > y) {
return x;
} return y;
};
const greeting = (language) => {
if (language === 'German') {
return 'Guten Tag!';
} else if (language === 'Spanish') {
return 'Hola!';
} else if (language === 'Chinese') {
return 'Ni Hao!';
} return 'Hello!';
};
const isTenOrFive = (num) => {
if (num === 10 || num === 5) {
return true;
} return false;
// otherwise return false
};
const isInRange = (num) => {
if (num < 50 && num > 20) {
return true;
} return false;
// return true if num is less than 50 and greater than 20
};
const isInteger = (num) => {
return typeof num === 'number' &&
isFinite(num) &&
Math.floor(num) === num;
};
// hint: you can solve this using Math.floor
const fizzBuzz = (num) => {
const divisibleByFive = num % 5 === 0;
const divisibleByThree = num % 3 === 0;
if (divisibleByFive && divisibleByThree) return 'fizzbuzz';
if (divisibleByThree) return 'fizz';
if (divisibleByFive) return 'buzz';
return num;
};
const isPrime = (num) => {
if (num === 0 || num === 1) return false;
for (let i = 2; i < num; i++) {
if (num % i === 0) return false;
}
return true;
};
const returnFirst = (arr) => {
return arr[0];
// return the first item from the array
};
const returnLast = (arr) => {
return arr[arr.length - 1];
// return the last item of the array
};
const getArrayLength = (arr) => {
return arr.length;
// return the length of the array
};
const incrementByOne = (arr) => {
return arr.map(num => num + 1);
};
const addItemToArray = (arr, item) => {
arr.unshift(item);
return arr;
};
const addItemToFront = (arr, item) => {
arr.unshift(item);
return arr;
};
const wordsToSentence = (words) => {
return words.join(' ');
};
const contains = (arr, item) => {
return arr.includes(item);
// 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;
};
const averageTestScore = (testScores) => {
let sum = 0;
for (let i = 0; i < testScores.length; i++) {
sum += parseInt(testScores[i], 10);
}
return sum / testScores.length;
};
const largestNumber = (x, y) => {
if (x > y) {
return x;
}
if (y > x) {
return y;
}
return x;
};
// 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
};