functions done

.tern-project

@@ -0,0 +1,11 @@
+{
+  "ecmaVersion": 6,
+  "libs": [],
+  "loadEagerly": [],
+  "dontLoad": [
+    "node_modules/**"
+  ],
+  "plugins": {
+    "doc_comment": true
+  }
+}

functions.js

@@ -3,60 +3,76 @@
  * @param {number} n
  * @return {string} the number as a string
  */
-
+let numberToString = function(n) {
+  return n.toString();
+};
 
 /**
  * Adds one to a given number.
  * @param {number} n
  * @return {number}
  */
-
+let increase = function(n) {
+  return n + 1;
+};
 
 /**
  * Subtracts one from a given number.
  * @param {number} n
  * @return {number}
  */
-
+let decrease = function(n) {
+  return n - 1;
+};
 
 /**
  * Adds two numbers.
  * @param {number} x
  * @param {number} y
  * @return {number} the sum
  */
-
+let add = function(x, y) {
+  return x + y;
+};
 
 /**
  * Subtracts the second number from the first.
  * @param {number} x
  * @param {number} y
  * @return {number} the difference
  */
-
+let subtract = function(x, y) {
+  return x - y;
+};
 
 /**
  * Multiplies two numbers.
  * @param {number} x
  * @param {number} y
  * @return {number} the product
  */
-
+let multiply = function(x, y) {
+  return x * y;
+};
 
 /**
  * Divides the first number by the second.
  * @param {number} x
  * @param {number} y
  * @return {number} the quotient
  */
-
+let divide = function(x, y) {
+  return x / y;
+};
 
 /**
  * Multiplies a number by itself.
  * @param {number} x, number to be squared
  * @return {number} squared
  */
-
+let square = function(x) {
+  return x * x;
+};
 
 /**
  * Performs a mathematical operation on two numbers.
@@ -66,61 +82,92 @@
  * @param {number} y
  * @return {number} the result
  */
-
-
+function calculate(str, x, y) {
+  if (str === "add") {
+    let add = x + y;
+    console.log(x + " + " + y + " = " + add);
+    return add;
+  } else if (str === "subtract") {
+    let subtract = x - y;
+    console.log(x + " - " + y + " = " + subtract);
+    return subtract;
+  } else if (str === "multiply") {
+    let multiply = x * y;
+    console.log(x + " * " + y + " = " + multiply);
+    return multiply;
+  } else if (str === "divide") {
+    let divide = x / y;
+    console.log(x + " / " + y + " = " + divide);
+    return divide;
+  }
+}
 /**
  * Returns true if `a` is greater than `b`.
  * @param {number} a
  * @param {number} b
  * @return {boolean} `a` is larger than `b`
  */
-
+let isGreaterThan = function(a, b) {
+  return a > b;
+};
 
 /**
  * Returns true if `a` is less than `b`.
  * @param {number} a
  * @param {number} b
  * @return {boolean} `a` is smaller than `b`
  */
-
+let isLessThan = function(a, b) {
+  return a < b;
+};
 
 /**
  * Returns true if `a` and `b` are equal.
  * @param {number} a
  * @param {number} b
  * @return {boolean} the numbers are equal
  */
-
+let areEqual = function(a, b) {
+  return a === b;
+};
 
 /**
  * Returns the smallest value of two numbers.
  * @param {number} x
  * @param {number} y
  * @return {number} the smallest number
  */
-
+let minimum = function(x, y) {
+  return Math.min(x, y);
+};
 
 /**
  * Returns the largest value of two numbers.
  * @param {number} x
  * @param {number} y
  * @return {number} the largest number
  */
-
+let maximum = function(x, y) {
+  return Math.max(x, y);
+};
 
 /**
  * Returns true if `n` is even.
  * @param {number} n
  * @return {boolean} the number is even
  */
-
+let isEven = function(n) {
+  return n % 2 === 0;
+};
 
 /**
  * Returns true if `n` is odd.
  * @param {number} n
  * @return {boolean} the number is odd
  */
-
+let isOdd = function(n) {
+  return Math.abs(n % 2) === 1;
+};
 
 /**
  * Returns a letter grade.
@@ -133,7 +180,29 @@
  * @param {number} total maximum possible score
  * @return {string} the score represented as a letter grade
  */
+function letterGrade(score, total) {
+  let grade = score / total * 100;
+  switch (true) {
+    case grade >= 90:
+      return "A";
+      break;
 
+    case grade >= 80:
+      return "B";
+      break;
+
+    case grade >= 70:
+      return "C";
+      break;
+
+    case grade >= 60:
+      return "D";
+      break;
+
+    default:
+      return "F";
+  }
+}
 
 /**
  * Checks if a `restaurant` object has a `reviews` property.
@@ -142,15 +211,25 @@
  * @param {object} restaurant   represents a restaurant object
  * @return {object} restaurant
  */
-
+function incrementReviews(restaurant) {
+  if (restaurant.reviews >= 1) {
+    restaurant.reviews++;
+  } else if (restaurant.reviews === undefined) {
+    restaurant.reviews = 1;
+  }
+  return restaurant;
+}
 
 /**
  * Joins two strings with a space.
  * @param {string} word1
  * @param {string} word2
  * @return {string} joined the words joined with a space
  */
-
+let combine = function(word1, word2) {
+  let words = word1 + " " + word2;
+  return words;
+};
 
 /**
  * Returns a circle object with the properties `circumference` and `area`.
@@ -160,3 +239,9 @@
  * @return {object} circle
  */
 
+function createCircle(radius) {
+  let circle = {};
+  circle.circumference = 2 * Math.PI * radius;
+  circle.area = Math.PI * radius * radius;
+  return circle;
+}