JMCR-Complete Skill-sharpening-project

src/01-functions.js

@@ -9,7 +9,9 @@
  *  alwaysTrue();
  *  //> true
  */
-function alwaysTrue() {}
+function alwaysTrue() {
+  return true
+}
 
 /**
  * greet()
@@ -24,7 +26,9 @@ function alwaysTrue() {}
  *  greet("Ian");
  *  //> "Hello, Ian."
  */
-function greet() {}
+function greet(name) {
+  return `Hello, ${name}.`
+}
 
 /**
  * add()
@@ -39,7 +43,9 @@ function greet() {}
  *  add(10, 20);
  *  //> 30
  */
-function add() {}
+function add(a, b) {
+  return a + b
+}
 
 /**
  * multiply()
@@ -54,7 +60,9 @@ function add() {}
  *  multiply(2, 5);
  *  //> 10
  */
-function multiply() {}
+function multiply(a, b) {
+  return a * b
+}
 
 /**
  * average()
@@ -74,7 +82,9 @@ function multiply() {}
  *  average(10, 6);
  *  //> 8 // 10 + 6 = 16; 16/2 = 8;
  */
-function average() {}
+function average(a, b) {
+  return (a + b) / 2
+}
 
 /**
  * averageThree()
@@ -93,7 +103,9 @@ function average() {}
  *  averageThree(10, 11, 19);
  *  //> 10 // 10 + 11 + 19 = 30; 30 / 3 = 10;
  */
-function averageThree() {}
+function averageThree(a, b, c) {
+  return (a + b + c) / 3
+}
 
 /**
  * compareTypes()
@@ -112,7 +124,11 @@ function averageThree() {}
  *  compareTypes("left", 10);
  *  //> false
  */
-function compareTypes() {}
+function compareTypes(a, b) {
+  if (typeof(a) === typeof(b))
+  return true
+  else return false
+}
 
 /**
  * flipSign()
@@ -131,7 +147,9 @@ function compareTypes() {}
  *  flipSign(50);
  *  //> -50
  */
-function flipSign() {}
+function flipSign(a) {
+  return -a
+}
 
 /**
  * joinStringsWithSpaces()
@@ -151,7 +169,9 @@ function flipSign() {}
  *  joinStringsWithSpaces("left", "right", "up", "down", "away");
  *  //> "left right up down away"
  */
-function joinStringsWithSpaces() {}
+function joinStringsWithSpaces(a, b, c, d, e) {
+  return `${a} ${b} ${c} ${d} ${e}`
+}
 
 /**
  * getFirstAndLastCharacter()
@@ -168,7 +188,9 @@ function joinStringsWithSpaces() {}
  *  getFirstAndLastCharacter("upwards");
  *  //> "us"
  */
-function getFirstAndLastCharacter() {}
+function getFirstAndLastCharacter(a) {
+  return `${a.charAt(0)}${a.charAt(a.length -1)}`
+}
 
 // Do not change the code below.
 module.exports = {

src/02-data-types.js

@@ -9,7 +9,9 @@
  *  getLengthOfString("down");
  *  //> 4
  */
-function getLengthOfString(str) {}
+function getLengthOfString(str) {
+  return str.length
+}
 
 /**
  * convertToNumber()
@@ -22,7 +24,9 @@ function getLengthOfString(str) {}
  *  convertToNumber("111");
  *  //> 111
  */
-function convertToNumber(val) {}
+function convertToNumber(val) {
+  return parseInt(val)
+}
 
 /**
  * convertToString()
@@ -36,7 +40,9 @@ function convertToNumber(val) {}
  *  convertToString(99);
  *  //> "99"
  */
-function convertToString(val) {}
+function convertToString(val) {
+  return String(val)
+}
 
 /**
  * convertToShoutingText()
@@ -49,7 +55,9 @@ function convertToString(val) {}
  *  convertToShoutingText("Hello There");
  *  //> "HELLO THERE"
  */
-function convertToShoutingText(text) {}
+function convertToShoutingText(text) {
+  return text.toUpperCase()
+}
 
 /**
  * convertToWhisperText()
@@ -62,7 +70,9 @@ function convertToShoutingText(text) {}
  *  convertToWhisperText("Hello There");
  *  //> "hello there"
  */
-function convertToWhisperText(text) {}
+function convertToWhisperText(text) {
+  return text.toLowerCase()
+}
 
 /**
  * checkIfCharacterIsInString()
@@ -79,7 +89,13 @@ function convertToWhisperText(text) {}
  *  checkIfCharacterIsInString("hello there", "a");
  *  //> false
  */
-function checkIfCharacterIsInString(text, character) {}
+function checkIfCharacterIsInString(text, character) {
+  // if (text === character){
+  //   return true
+  // } else if (text !== character)
+  //   return false
+  return text.includes(character)
+} 
 
 /**
  * isEven()
@@ -95,7 +111,9 @@ function checkIfCharacterIsInString(text, character) {}
  *  isEven(11);
  *  //> false
  */
-function isEven(num) {}
+function isEven(num) {
+  return (num % 2 === 0)
+}
 
 /**
  * isOdd()
@@ -111,7 +129,13 @@ function isEven(num) {}
  *  isOdd(11);
  *  //> true
  */
-function isOdd(num) {}
+function isOdd(num) {
+  if (num % 2 === 0) {
+    return false;
+  } else {
+    return true;
+  }
+}
 
 /**
  * isTruthy()
@@ -127,7 +151,13 @@ function isOdd(num) {}
  *  isTruthy(null);
  *  //> false
  */
-function isTruthy(val) {}
+function isTruthy(val) {
+  if (!!val == false){
+    return false;
+  } else {
+    return true;
+  }   
+}
 
 /**
  * isFalsy()
@@ -143,7 +173,13 @@ function isTruthy(val) {}
  *  isFalsy(" ");
  *  //> false
  */
-function isFalsy(val) {}
+function isFalsy(val) {
+  if (!val == true){
+    return true;
+  } else {
+    return false;
+  }   
+}
 
 // Do not change the code below.
 module.exports = {

src/03-control-flow.js

@@ -14,7 +14,9 @@
  *  isEqual(10, "10");
  *  //> false
  */
-function isEqual(a, b) {}
+function isEqual(a, b) {
+  return a ===b
+}
 
 /**
  * findLarger()
@@ -28,7 +30,9 @@ function isEqual(a, b) {}
  *  findLarger(19, 7);
  *  //> 19
  */
-function findLarger(a, b) {}
+function findLarger(a, b) {
+  return Math.max(a , b)
+}
 
 /**
  * findLargerOrTie()
@@ -45,7 +49,15 @@ function findLarger(a, b) {}
  *  findLargerOrTie(0, 0);
  *  //> "tie"
  */
-function findLargerOrTie(a, b) {}
+function findLargerOrTie(a, b) {
+  if (Math.max(a) > Math.max(b)) {
+    return a
+  } else if(Math.max(a) < Math.max(b)) {
+    return b
+  } else {
+    return "tie"
+  } 
+}   
 
 /**
  * positiveNegativeOrZero()
@@ -65,7 +77,16 @@ function findLargerOrTie(a, b) {}
  *  positiveNegativeOrZero(1);
  *  //> "Positive"
  */
-function positiveNegativeOrZero(a) {}
+function positiveNegativeOrZero(a) {
+  let i = 0
+  if (i > a) {
+    return "Negative"
+  } else if(i < a) {
+    return "Positive"
+  } else {
+    return "Zero"
+  } 
+} 
 
 /**
  * aroundTheWorldGreeting()
@@ -86,7 +107,13 @@ function positiveNegativeOrZero(a) {}
  *  aroundTheWorldGreeting();
  *  //> "Hello World"
  */
-function aroundTheWorldGreeting(language) {}
+function aroundTheWorldGreeting(language) {
+  if (language == `spanish`){
+    return `Hola Mundo`
+  } else if(language == `german`){
+    return `Hallo Welt`
+  } else return `Hello World`
+}
 
 /**
  * aroundTheWorldGreetingWithSwitch()
@@ -109,7 +136,21 @@ function aroundTheWorldGreeting(language) {}
  *  aroundTheWorldGreetingWithSwitch();
  *  //> "Hello World"
  */
-function aroundTheWorldGreetingWithSwitch(language) {}
+function aroundTheWorldGreetingWithSwitch(language) {
+  let myDefault = "Hello World"
+
+  switch (language){
+    case "english": 
+    myDefault = "Hello World";
+    break;
+    case "spanish":
+      myDefault = "Hola Mundo";
+      break;
+    case "german":
+      myDefault = "Hallo Welt";
+      break;
+  } return myDefault
+}
 
 /**
  * calculateLetterGrade()
@@ -128,7 +169,19 @@ function aroundTheWorldGreetingWithSwitch(language) {}
  *  calculateLetterGrade(99);
  *  //> "A"
  */
-function calculateLetterGrade(grade) {}
+function calculateLetterGrade(grade) {
+  if (grade >= 90){
+    return "A"
+  } else if (grade >= 80){
+    return "B"
+  } else if (grade >= 70){
+    return "C"
+  } else if (grade >= 60){
+    return "D"
+  } else if (grade >= 60){
+    return "E"
+  } else return "F"
+}
 
 /**
  * animalCounts()
@@ -146,7 +199,11 @@ function calculateLetterGrade(grade) {}
  *  animalCounts("pig", 1);
  *  //> "1 pig"
  */
-function animalCounts(animal, numberOfAnimals) {}
+function animalCounts(animal, numberOfAnimals) {
+  if (numberOfAnimals > 1){
+    return `${numberOfAnimals} ${animal}s`
+  } else return `${numberOfAnimals} ${animal}`
+}
 
 /**
  * evenOrOdd()
@@ -163,7 +220,11 @@ function animalCounts(animal, numberOfAnimals) {}
  *  evenOrOdd(48);
  *  //> "Even"
  */
-function evenOrOdd(a) {}
+function evenOrOdd(a) {
+  if (a % 2 === 0){
+    return `Even`
+  } else return "Odd"
+}
 
 /**
  * evenOrOddWithTernary()
@@ -179,7 +240,9 @@ function evenOrOdd(a) {}
  *  evenOrOddWithTernary(8);
  *  //> "Even"
  */
-function evenOrOddWithTernary(a) {}
+function evenOrOddWithTernary(a) {
+  return (a % 2 === 0 ? 'Even' : 'Odd');
+}
 
 // Do not change any code below this line.
 module.exports = {