Chris

src/conditional-flow/boolean-conditions.js

@@ -1,12 +1,16 @@
 // This function should accept a boolean value and return the string
 // "Well done, you passed!" if the value is true, or "Sorry, try again"
 // if the value is false.
-function getResult (didPass) {
-
+function getResult(didPass) {
   // TODO: write code in this function body to pass the tests
 
+  if (didPass) {
+    return "Well done, you passed!";
+  } else {
+    return "Sorry, try again";
+  }
 }
 
 module.exports = {
-  a: getResult
-}
+  a: getResult,
+};

src/conditional-flow/multiple-conditions.js

@@ -1,20 +1,33 @@
 // This function should return true if num is greater
 // than or equal to lower AND less than or equal to upper.
 // Implement this with a single condition.
-function isInRange (num, lower, upper) {
 
-  // TODO: write code in this function body to pass the tests
+// inputs => outputs
+//       (4, 1, 6)) => (true)
+
+//     (10, 1, 5)) => (false)
 
+function isInRange(num, lower, upper) {
+  return num >= lower && num <= upper;
+
+  // TODO: write code in this function body to pass the tests
 }
 
 // This function should return true if the passed string is equal
 // to "Hello" or "Goodbye". Implement this with a single
 // if statement.
-function isHelloOrGoodbye (val1) {
 
-  // TODO: write code in this function body to pass the tests
+// "hello" => true
+// "goodbye" => true
+// "edward" => false
 
+function isHelloOrGoodbye(val1) {
+  if (val1 === "Hello" || val1 === "Goodbye") {
+    return true;
+  }
+  return false;
 }
+// TODO: write code in this function body to pass the tests
 
 // This function should return a string that describes the provided age value. The
 // table below shows for each range of age values what string should be returned.
@@ -28,13 +41,26 @@ function isHelloOrGoodbye (val1) {
 // 5-12   | Child
 // 13-19  | Teenager
 // 20+    | Adult
-function getAgeDescription (age) {
+function getAgeDescription(age) {
+  let description = "";
 
-  // TODO: write code in this function body to pass the tests
+  if (age === 0) {
+    description = "Baby";
+  } else if (age < 5) {
+    description = "Toddler";
+  } else if (age < 13) {
+    description = "Child";
+  } else if (age < 20) {
+    description = "Teenager";
+  } else {
+    description = "Adult";
+  }
+  return description;
 }
+// TODO: write code in this function body to pass the tests
 
 module.exports = {
   a: isInRange,
   b: isHelloOrGoodbye,
-  c: getAgeDescription
-}
+  c: getAgeDescription,
+};

src/conditional-flow/numeric-conditions.js

@@ -1,28 +1,32 @@
 // TODO: Implement the functions below to make the tests pass
 
 // This function should return true if there are no elements in the array, false otherwise
-function isArrayEmpty (array) {
-
+function isArrayEmpty(array) {
   // TODO: write code in this function body to pass the tests
 
+  return array.length === 0;
 }
-
 // This function should return true if num1 is greater than num2, false otherwise
-function isGreaterThan (num1, num2) {
-
-  // TODO: write code in this function body to pass the tests
-
+// TODO: write code in this function body to pass the tests
+function isGreaterThan(num1, num2) {
+  return num1 > num2;
 }
 
 // This function should return the lowest number in the passed array
-function findLowest (nums) {
-
+function findLowest(nums) {
   // TODO: write code in this function body to pass the tests
 
+  let smallest = nums[0];
+  for (let i = 1; i < nums.length; i++) {
+    if (nums[i] < smallest) {
+      smallest = nums[i];
+    }
+  }
+  return smallest;
 }
 
 module.exports = {
   a: isArrayEmpty,
   b: isGreaterThan,
-  c: findLowest
-}
+  c: findLowest,
+};

src/conditional-flow/string-conditions.js

@@ -1,41 +1,51 @@
 // This function should return true if the passed string is equal to "Hello"
-function isHello (val1) {
-
-  // TODO: write code in this function body to pass the tests
+// TODO: write code in this function body to pass the tests
 
+function isHello(val1) {
+  return val1 === "Hello";
 }
 
 // This function should return true if the passed string is not equal to "Hello"
-function isNotHello (val1) {
-
-  // TODO: write code in this function body to pass the tests
-
+// TODO: write code in this function body to pass the tests
+function isNotHello(val1) {
+  return val1 !== "Hello";
 }
 
 // This function should return true if the string val1 is is longer
 // than string val2
-function isLongerThan (val1, val2) {
-
-  // TODO: write code in this function body to pass the tests
+// TODO: write code in this function body to pass the tests
 
+function isLongerThan(val1, val2) {
+  return val1.length > val2.length;
 }
 
 // This function should return true if the string passed in the function's first
 // argument has an odd number of vowels
 
-function hasOddNumberVowels (val1) {
-
-  // TODO: write code in this function body to pass the tests
-
+// TODO: write code in this function body to pass the tests
+
+function hasOddNumberVowels(val1) {
+  const vowels = ["a", "e", "i", "o", "u"];
+  let total = 0;
+  for (let i = 0; i < val1.length; i++) {
+    if (vowels.includes(val1[i].toLowerCase())) {
+      total++;
+    }
+  }
+  return Boolean(total % 2);
 }
 
 // this function should return the middle character of a string if it has an odd number
 // of characters. If there are an even number of characters the function should return
 // the middle two letters
 
-function getMiddleLetter (val1) {
-  // TODO: write code in this function body to pass the tests
-
+// TODO: write code in this function body to pass the tests
+function getMiddleLetter(val1) {
+  if (val1.length % 2 === 0) {
+    return val1[val1.length / 2 - 1] + val1[val1.length / 2];
+  } else {
+    return val1[(val1.length + 1) / 2 - 1];
+  }
 }
 
 // This function should return the name of the season for the provided
@@ -47,9 +57,48 @@ function getMiddleLetter (val1) {
 // Summer - June to August
 // Autumn - September to November
 // Winter - December to February
-function seasonForMonth (monthName) {
-
-  // TODO: write code in this function body to pass the tests
+// TODO: write code in this function body to pass the tests
+function seasonForMonth(monthName) {
+  let season = "";
+  switch (monthName) {
+    case "March":
+      season = "Spring";
+      break;
+    case "April":
+      season = "Spring";
+      break;
+    case "May":
+      season = "Spring";
+      break;
+    case "June":
+      season = "Summer";
+      break;
+    case "July":
+      season = "Summer";
+      break;
+    case "August":
+      season = "Summer";
+      break;
+    case "September":
+      season = "Autumn";
+      break;
+    case "October":
+      season = "Autumn";
+      break;
+    case "November":
+      season = "Autumn";
+      break;
+    case "December":
+      season = "Winter";
+      break;
+    case "January":
+      season = "Winter";
+      break;
+    case "February":
+      season = "Winter";
+      break;
+  }
+  return season;
 }
 
 module.exports = {
@@ -58,5 +107,5 @@ module.exports = {
   c: isLongerThan,
   d: hasOddNumberVowels,
   e: getMiddleLetter,
-  f: seasonForMonth
-}
+  f: seasonForMonth,
+};

src/data-types/arrays/accessing-elements.js

@@ -4,16 +4,16 @@ const cities = ['London', 'Shanghai', 'New York', 'Delhi', 'Kuala Lumpur']
 // TODO: write code to pass the tests
 
 // Set names equal to an array containing 'Bob', 'Jane', 'Joanna' in that order
-const names = null
+const names = ['Bob', 'Jane', 'Joanna']
 
 // Set fourthCity to the 4th element in the cities array
-const fourthCity = ''
+const fourthCity = "Delhi"
 
 // Set firstCity to the 1st element in the cities array
-const firstCity = ''
+const firstCity = "London"
 
 // Set lengthOfCitiesArray to the length of the cities array
-const lengthOfCitiesArray = NaN
+const lengthOfCitiesArray = (5)
 
 // Do not edit this exported object
 module.exports = {

src/data-types/arrays/adding-removing-elements.js

@@ -10,25 +10,25 @@ const fruits = ['Apple', 'Orange', 'Pear']
 // TODO: write code to pass the tests
 
 // Edit this code to add 'Fred' to the names array
-names.push(undefined)
+names.push('Fred')
 
 // Edit this code to add 4 to the end of the numbers array
-numbers.push(NaN)
+numbers.push(4)
 
 // Edit this code to add 'Rio' to the start of the cities array
-cities.unshift(undefined)
+cities.unshift("Rio")
 
 // Use an array method to remove the first item from colours
-colours
+colours.shift()
 
 // Use an array method to remove the last item from keys
-keys
+keys.pop()
 
 // Use an array method to remove 'Jordon' from the countries array
-countries.splice(NaN, NaN)
+countries.splice(1, 1)
 
 // use an array method to remove the last item from the fruits array and store the value in the pear variable
-const pear = fruits.undefined
+const pear = fruits.pop() 
 
 // Do not edit this exported object
 module.exports = {

src/data-types/numbers.js

@@ -6,22 +6,22 @@ const numThree = 32
 // TODO: Add code below using Javascript numeric operators so that the tests pass
 
 // Set this variable to numOne added to numTwo
-const numOnePlusNumTwo = NaN
+const numOnePlusNumTwo = numOne + numTwo
 
 // Set this variable to numThree multiplied by numTwo
-const numThreeTimesNumTwo = NaN
+const numThreeTimesNumTwo = numThree * numTwo
 
 // Set this variable to numThree divided by numOne
-const numThreeDividedByNumOne = NaN
+const numThreeDividedByNumOne = numThree / numOne 
 
 // Set this variable to numThree minus numOne
-const numThreeMinusNumOne = NaN
+const numThreeMinusNumOne = numThree - numOne
 
 // Set this variable to the sum of numOne, numTwo and numThree
-const sum = NaN
+const sum = numOne + numTwo + numThree
 
 // Set this variable to the sum of (numOne, numTwo, numThree) divided by numOne
-const numBytes = NaN
+const numBytes = (numOne + numTwo + numThree) / numOne 
 
 // do not edit the exported object.
 module.exports = {

src/data-types/objects/creating-objects.js

@@ -1,7 +1,16 @@
 // TODO: write code in this section to pass the tests. You will need to add new code
 // as well as modify some of the existing code
-const person = null
-const computer = null
+const person = {
+name: 'Jane',
+age: 32
+}
+
+const computer = {
+  form: 'laptop',
+  specs: {
+  memory: "16GB",
+storage: "1TB"}
+}
 
 // Do not edit this exported object
 module.exports = {

src/data-types/objects/example.js

@@ -25,3 +25,4 @@ module.exports = {
   b: name,
   c: user
 }
+