Functions and Complex Expressions Assessment

// 1.

// Define a function max() that takes two numbers as arguments and returns the largest of them. Use the if-then-else construct available in JavaScript.

// A:

function max(num1, num2){

if(num1 > num2){

return num1;

} else if (num2 > num1){

return num2;

}

}

// 2.

// Define a function maxOfThree() that takes three numbers as arguments and returns the largest of them.

// A:

function maxOfThree(num1, num2, num3){

var numArray = [num1, num2, num3];

numArray.sort(function(a, b){return b-a});

return numArray[0];

}

// 3.

// Write a function that takes a character (i.e. a string of length 1) and returns true if it is a vowel, false otherwise.

// A:

function isVowel(char){

var vowelArray = ["a","e","i","o","u"];

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

if (char === vowelArray[i]){

return true;

} else {

return false;

}

}

}

// 4.

// Write a function called `sum` that takes two parameters and returns the sum of those 2 numbers.

// A:

function sum(num1, num2){

return num1 + num2;

}

// 5.

// Write a function named `avg` that takes 3 parameters and returns the average of those 3 numbers.

// A:

function avg(num1, num2, num3){

return (num1 + num2 + num3) / 3;

}

// 6.

// Write a function called `getLength` that takes one parameter (a string) and returns the length

// A:

function getLength(string1){

return string1.length;

}

// 7.

// Write a function called `greaterThan` that takes two parameters

// and returns `true` if the second parameter is greater than the first.

// Otherwise the function should return `false`.

// A:

function greaterThan(num1, num2){

if(num1 > num2){

return false;

} else if (num2 > num1){

return true;

}

}

// 8.

// Write a function called `greet` that takes a

// single parameter and returns a string that

// is formated like "Hello, Name!" where *Name*

// is the parameter that was passed in.

// A:

function greet(name){

return "Hello, " + name + "!";

}

// 9.

// Write a function called `madlib` that takes 4 or more parameters (words).

// The function should insert the words into a pre-defined sentence.

// Finally the function should return that sentence.

// Note: When I say words and sentence I mean strings. For example:

// words: "quick", "fox", "fence"

// sentence: "quick brown fox jumps over the fence"

// A:

function madlib(str1, str2, str3, str4){

return "The " + str1 + " brown " + str2 + " jumps over the " + str3 + " and eats the " + str4 + ".";

}

console.log(madlib("quick", "fox", "fence", "hare"));