Tibor

spec/variables/assignment.spec.js

@@ -1,11 +1,11 @@
-const { a, b } = require('../../src/variables/assignment.js')
+const { a, b } = require("../../src/variables/assignment.js");
 
 describe("Variable Assignment:", () => {
   it("firstNumber is 20", () => {
-    expect(a).toEqual(20)
-  })
+    expect(a).toEqual(20);
+  });
 
   it("secondNumber is 42", () => {
-    expect(b).toEqual(42)
-  })
-})
+    expect(b).toEqual(42);
+  });
+});

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

@@ -1,19 +1,23 @@
 // 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) {
-
+function isInRange(num, lower, upper) {
   // TODO: write code in this function body to pass the tests
 
+  if (num >= lower && num <= upper) {
+    return true;
+  } else return false;
 }
 
 // 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) {
-
+function isHelloOrGoodbye(val1) {
   // TODO: write code in this function body to pass the tests
 
+  if (val1 === "Hello" || val1 === "Goodbye") {
+    return true;
+  } else return false;
 }
 
 // This function should return a string that describes the provided age value. The
@@ -28,13 +32,18 @@ function isHelloOrGoodbye (val1) {
 // 5-12   | Child
 // 13-19  | Teenager
 // 20+    | Adult
-function getAgeDescription (age) {
-
+function getAgeDescription(age) {
   // TODO: write code in this function body to pass the tests
+
+  if (0 === age) return "Baby";
+  if (0 < age && age <= 4) return "Toddler";
+  if (4 < age && age <= 12) return "Child";
+  if (13 <= age && age <= 19) return "Teenager";
+  if (20 <= age) return "Adult";
 }
 
 module.exports = {
   a: isInRange,
   b: isHelloOrGoodbye,
-  c: getAgeDescription
-}
+  c: getAgeDescription,
+};

src/conditional-flow/numeric-conditions.js

@@ -1,28 +1,33 @@
 // 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
 
+  if (array.length === 0) return true;
+
+  return false;
 }
 
 // This function should return true if num1 is greater than num2, false otherwise
-function isGreaterThan (num1, num2) {
-
+function isGreaterThan(num1, num2) {
   // TODO: write code in this function body to pass the tests
+  if (num1 > num2) return true;
 
+  return false;
 }
 
 // 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 lowest = Math.min(...nums);
+
+  return lowest;
 }
 
 module.exports = {
   a: isArrayEmpty,
   b: isGreaterThan,
-  c: findLowest
-}
+  c: findLowest,
+};

src/conditional-flow/string-conditions.js

@@ -1,41 +1,56 @@
 // This function should return true if the passed string is equal to "Hello"
-function isHello (val1) {
+function isHello(val1) {
+  if (val1 === "Hello") return true;
+  return false;
 
   // TODO: write code in this function body to pass the tests
-
 }
 
 // This function should return true if the passed string is not equal to "Hello"
-function isNotHello (val1) {
-
+function isNotHello(val1) {
   // TODO: write code in this function body to pass the tests
-
+  if (val1 !== "Hello") return true;
+  return false;
 }
 
 // This function should return true if the string val1 is is longer
 // than string val2
-function isLongerThan (val1, val2) {
-
+function isLongerThan(val1, val2) {
   // TODO: write code in this function body to pass the tests
-
+  if (val1.length > val2.length) return true;
+  return false;
 }
 
 // This function should return true if the string passed in the function's first
 // argument has an odd number of vowels
 
-function hasOddNumberVowels (val1) {
-
+function hasOddNumberVowels(val1) {
   // TODO: write code in this function body to pass the tests
+  let vowel_list = "aeiouAEIOU";
+  let vcount = 0;
+
+  for (let x = 0; x < val1.length; x++) {
+    if (vowel_list.indexOf(val1[x]) !== -1) {
+      vcount += 1;
+    }
+  }
 
+  if (vcount % 2 !== 0) return true;
+  return false;
 }
 
 // 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) {
+function getMiddleLetter(val1) {
   // TODO: write code in this function body to pass the tests
 
+  if (val1.length % 2 === 0) {
+    return val1[val1.length / 2 - 1] + val1[val1.length / 2];
+  } else {
+    return val1[Math.floor(val1.length / 2)];
+  }
 }
 
 // This function should return the name of the season for the provided
@@ -47,9 +62,49 @@ function getMiddleLetter (val1) {
 // Summer - June to August
 // Autumn - September to November
 // Winter - December to February
-function seasonForMonth (monthName) {
-
+function seasonForMonth(monthName) {
   // TODO: write code in this function body to pass the tests
+
+  switch (monthName) {
+    case (monthName = "January"):
+      return "Winter";
+      break;
+    case (monthName = "February"):
+      return "Winter";
+      break;
+    case (monthName = "December"):
+      return "Winter";
+      break;
+    case (monthName = "March"):
+      return "Spring";
+      break;
+    case (monthName = "April"):
+      return "Spring";
+      break;
+    case (monthName = "May"):
+      return "Spring";
+      break;
+    case (monthName = "June"):
+      return "Summer";
+      break;
+    case (monthName = "July"):
+      return "Summer";
+      break;
+    case (monthName = "August"):
+      return "Summer";
+      break;
+    case (monthName = "September"):
+      return "Autumn";
+      break;
+    case (monthName = "October"):
+      return "Autumn";
+      break;
+    case (monthName = "November"):
+      return "Autumn";
+      break;
+    default:
+      return "";
+  }
 }
 
 module.exports = {
@@ -58,5 +113,5 @@ module.exports = {
   c: isLongerThan,
   d: hasOddNumberVowels,
   e: getMiddleLetter,
-  f: seasonForMonth
-}
+  f: seasonForMonth,
+};

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

@@ -1,24 +1,24 @@
 // do not edit this section
-const cities = ['London', 'Shanghai', 'New York', 'Delhi', 'Kuala Lumpur']
+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 = cities[3];
 
 // Set firstCity to the 1st element in the cities array
-const firstCity = ''
+const firstCity = cities[0];
 
 // Set lengthOfCitiesArray to the length of the cities array
-const lengthOfCitiesArray = NaN
+const lengthOfCitiesArray = cities.length;
 
 // Do not edit this exported object
 module.exports = {
   a: names,
   b: fourthCity,
   c: firstCity,
-  d: lengthOfCitiesArray
-}
+  d: lengthOfCitiesArray,
+};

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

@@ -1,34 +1,34 @@
 // do not edit this section
-const cities = ['London', 'Shanghai', 'New York', 'Delhi', 'Kuala Lumpur']
-const names = []
-const numbers = [1, 2, 3]
-const colours = ['Red', 'Blue', 'Yellow']
-const keys = ['q', 'w', 'e', 'r', 't', 'y']
-const countries = ['Bolivia', 'Jordan', 'Greenland']
-const fruits = ['Apple', 'Orange', 'Pear']
+const cities = ["London", "Shanghai", "New York", "Delhi", "Kuala Lumpur"];
+const names = [];
+const numbers = [1, 2, 3];
+const colours = ["Red", "Blue", "Yellow"];
+const keys = ["q", "w", "e", "r", "t", "y"];
+const countries = ["Bolivia", "Jordan", "Greenland"];
+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 = {
@@ -39,5 +39,5 @@ module.exports = {
   e: keys,
   f: countries,
   g: fruits,
-  h: pear
-}
+  h: pear,
+};