homework.jsIII

// Do not change any of the function names

function getBiggest(x, y) {
  // x and y are integers.  Return the larger integer
  // if they are the same return either one
  if (x > y) return x;
  return y;
  }
}

function greeting(language) {
  // return a greeting for three different languages:
  // language: 'German' -> 'Guten Tag!'
  // language: 'English' -> 'Hello!'
  // language: 'Spanish' -> 'Hola!'
  // if language is undefined return 'Hello!'
  if (language === 'German') {
    return 'Guten Tag';
    else if (language === 'English') { 

    }
    return 'Hello!';
    else if (language === 'Spanish') {
      return 'Hola!';
      else {
        return 'Hello!';
      }
    }
  }
}

function isTenOrFive(num) {
  // return true if num is 10 or 5
  // otherwise return false
  return num === 10 || num ===5;
}

function isInRange(num) {
  // return true if num is less than 50 and greater than 20
  return num < 50 && num > 20;

}

function isInteger(num) {
  // 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
    return num === Math.floor(num);



}

function fizzBuzz(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
   if (num % 3 === 0 && num % 5 === 0) {
   return 'fizzbuzz'; 
   } else if (num % 3 === 0) {
     return 'fizz';
   } else if (num % 5 === 0) {  
     return 'buzz';
   } else {
     return num;
   }     
}

function isPrime(num) {// num = 4
  // 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
 if (num ===1 || num === 0) {
 return false;
}
if (num === 2) return true;
 for (let i =2; i < num; i++) {// 7
   if (num % i === 0) {
   return false;

   }
   return true;
}



}

function returnFirst(arr) {
  // return the first item from the array
  return arr{0};
}

function returnLast(arr) {
  // return the last item of the array
  return arr{arr.length - 1};
}

function getArrayLength(arr) {
  // return the length of the array
  return arr.length;
}

function incrementByOne(arr) {
  // arr is an array of integers  
  // increase each integer by one
  // return the array
  for (let i=0; i <arr.length; i++) {
    arr[i] + 1; 
    return arr;
}

function addItemToArray(arr, item) {
  // add the item to the end of the array
  // return the array
  arr.psh(item);
  return arr;
}

function addItemToFront(arr, item) {
  // add the item to the front of the array
  // return the array
  // hint: use the array method .unshift
  arr.unshift(item);
  return arr;
}

function wordsToSentence(words) {
  // 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!'
  let sentence = '';
  for (let i = 0; i < words.length; i++) {
    sentence += words [i];
    if (i + 1 !== words.length) {
      sentence += words[i];
    }
}
return sentence;

return words.join('')

function contains(arr, item) {
  // check to see if item is inside of arr
  // return true if it is, otherwise return false
}

function addNumbers(numbers) {
  // numbers is an array of integers.
  // add all of the integers and return the value
}

function averageTestScore(testScores) {
  // testScores is an array.  Iterate over testScores and compute the average.
  // return the average
  return addNumbers(testScores) / testScores.length;
}

function largestNumber(numbers) {
  // numbers is an array of integers
  // return the largest integer
  let largest = numbers[0];
  for (let i = 1; i < numbers.length; i++)
  if (numbers[i]) > largest {
  return largest;
}

// Do not modify code below this line.
// --------------------------------

module.exports = {
  getBiggest: getBiggest,
  greeting: greeting,
  isTenOrFive: isTenOrFive,
  isInRange: isInRange,
  isInteger: isInteger,
  fizzBuzz: fizzBuzz,
  isPrime: isPrime,
  returnFirst: returnFirst,
  returnLast: returnLast,
  getArrayLength: getArrayLength,
  incrementByOne: incrementByOne,
  addItemToArray: addItemToArray,
  addItemToFront: addItemToFront,
  wordsToSentence: wordsToSentence,
  contains: contains,
  addNumbers: addNumbers,
  averageTestScore: averageTestScore,
  largestNumber: largestNumber
};