London 9 - Tony Arora - JavaScript-Core-1-Coursework-Week1

exercises/B-hello-world/exercise.js

@@ -1 +1,5 @@
 console.log("Hello world");
+console.log("finally understood how to use terminal");
+console.log("gives error without quotes");
+console.log(100);
+console.log("it gets the number")

exercises/C-variables/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `greeting`
-
+let greeting = "Hello World";
+console.log(greeting);
+console.log(greeting);
 console.log(greeting);

exercises/D-strings/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
-
+let message = "Tony was here";
+let type= typeof message;
 console.log(message);
+console.log(type);

exercises/E-strings-concatenation/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
-
+let first = "My name is";
+let second = " King Tony";
+let message = first + second;
 console.log(message);

exercises/F-strings-methods/exercise.js

@@ -1,3 +1,4 @@
 // Start by creating a variable `message`
-
+var name = "tony";
+var message = name.length;
 console.log(message);

exercises/F-strings-methods/exercise2.js

@@ -1,3 +1,3 @@
 const name = " Daniel  ";
-
+let message=name.toLowerCase();
 console.log(message);

exercises/G-numbers/exercise.js

@@ -1 +1,5 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+let numOfStudents=15;
+let numOfMentors=8;
+let abs=numOfMentors+numOfStudents;
+console.log("the total number of sty and men are:" + abs)

exercises/I-floats/exercise.js

@@ -1,2 +1,9 @@
 var numberOfStudents = 15;
 var numberOfMentors = 8;
+
+var sum=numberOfMentors+numberOfStudents;
+var men=Math.round((numberOfMentors/sum)*100);
+var stu=Math.round((numberOfStudents/sum)*100);
+console.log(men);
+console.log(stu);
+

exercises/J-functions/exercise.js

@@ -1,5 +1,6 @@
 function halve(number) {
   // complete the function here
+  return number/2
 }
 
 var result = halve(12);

exercises/J-functions/exercise2.js

@@ -1,5 +1,6 @@
 function triple(number) {
   // complete function here
+  return number*number*number
 }
 
 var result = triple(12);

exercises/K-functions-parameters/exercise.js

@@ -1,6 +1,7 @@
 // Complete the function so that it takes input parameters
-function multiply() {
+function multiply(a,b) {
   // Calculate the result of the function and return it
+ return a*b
 }
 
 // Assign the result of calling the function the variable `result`

exercises/K-functions-parameters/exercise2.js

@@ -1,5 +1,7 @@
 // Declare your function first
-
+function divide(a,b){
+    return a/b
+};
 var result = divide(3, 4);
 
 console.log(result);

exercises/K-functions-parameters/exercise3.js

@@ -1,5 +1,7 @@
 // Write your function here
-
+function createGreeting(name){
+    return ("Nice to meet you " + name)
+}
 var greeting = createGreeting("Daniel");
 
 console.log(greeting);

exercises/K-functions-parameters/exercise4.js

@@ -1,5 +1,8 @@
 // Declare your function first
 
 // Call the function and assign to a variable `sum`
-
+function summed(a,b){
+    return a+b
+};
+let sum =summed(13,24)
 console.log(sum);

extra/1-currency-conversion.js

@@ -5,7 +5,9 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(gbp) {
+  return Number((gbp*1.4).toFixed(2));
+}
 
 /*
   CURRENCY CONVERSION
@@ -15,7 +17,10 @@ function convertToUSD() {}
   They have also decided that they should add a 1% fee to all foreign transactions, which means you only convert 99% of the £ to BRL.
 */
 
-function convertToBRL() {}
+function convertToBRL(brazil) {
+  let ninetyNine=(brazil*99)/100;
+  return Number((ninetyNine*5.7).toFixed(2));
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

extra/2-piping.js

@@ -16,26 +16,28 @@
   the final result to the variable goodCode
 */
 
-function add() {
+function add(a,b) {
+  return a+b;
 
 }
 
-function multiply() {
-
+function multiply(a,b) {
+return a*b;
 }
 
-function format() {
+function format(c) {
+  return `£${c}`;
 
 }
 
 const startingValue = 2;
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode =
+let badCode = format((startingValue+10)*2);
 
 /* BETTER PRACTICE */
 
-let goodCode =
+let goodCode = format((startingValue+10)*2);
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

extra/3-magic-8-ball.js

@@ -42,13 +42,65 @@
     Outlook not so good.
     Very doubtful.
 */
+const { toBeOneOf } = require("jest-extended");
+
+const veryPositiveAnswers = [
+  "It is certain.",
+  "It is decidedly so.",
+  "Without a doubt.",
+  "Yes - definitely.",
+  "You may rely on it.",
+];
+
+const positiveAnswers = [
+  " As I see it, yes.",
+  "Most likely.",
+  " Outlook good.",
+  "Yes.",
+  " Signs point to yes.",
+];
+
+const negativeAnswers = [
+  "Reply hazy, try again.",
+  "Ask again later.",
+  "Better not tell you now.",
+  "Cannot predict now.",
+  "Concentrate and ask again.",
+];
+const veryNegativeAnswers = [
+  "Don't count on it.",
+  "My reply is no.",
+  "My sources say no.",
+  "Outlook not so good.",
+  "Very doubtful.",
+];
+
+const listsOfAnswers = [
+  veryPositiveAnswers,
+  positiveAnswers,
+  negativeAnswers,
+  veryNegativeAnswers,
+];
+
+let answer;
 
 // This should log "The ball has shaken!"
 // and return the answer.
 function shakeBall() {
   //Write your code in here
+  console.log("The ball has shaken!")
+  answer= randomAnswer();
+  return answer;
+}
+function randomAnswer(){
+  let list=listsOfAnswers[getRandom(4)];
+  let answer=list[getRandom(5)];
+  return answer;
 }
 
+function getRandom(max){
+  return Math.floor(Math.random()*max);
+}
 /* 
   This function should say whether the answer it is given is
     - very positive
@@ -58,10 +110,28 @@ function shakeBall() {
 
   This function should expect to be called with any value which was returned by the shakeBall function.
 */
-function checkAnswer(answer) {
+function checkAnswer(string) {
   //Write your code in here
+  for (let i=0; i<4;i++){
+    let list=listsOfAnswers[i];
+     for (let j = 0; j < 5; j++) {
+      let answerFromList = list[j];
+      if (answerFromList === string) {
+        if (i === 0) {
+          return "very positive";
+        } else if (i === 1) {
+          return "positive";
+        } else if (i === 2) {
+          return "negative";
+        } else {
+          return "very negative";
+        }
+      }
+    }
+  }
 }
 
+
 /* 
 ==================================
 ======= TESTS - DO NOT MODIFY =====

mandatory/1-syntax-errors.js

@@ -1,16 +1,17 @@
 // There are syntax errors in this code - can you fix it to pass the tests?
 
-function addNumbers(a b c) {
+function addNumbers(a, b, c) {
   return a + b + c;
 }
 
-function introduceMe(name, age)
-  return "Hello, my name is " + name "and I am " age + "years old";
+function introduceMe(name, age){
+  return `Hello, my name is ${name} and I am ${age} years old`;
+}
 
 function getTotal(a, b) {
-  total = a ++ b;
+  total = a + b;
 
-  return "The total is total";
+  return `The total is ${total}`;
 }
 
 /* 

mandatory/2-logic-error.js

@@ -1,16 +1,15 @@
 // The syntax for this function is valid but it has an error, find it and fix it.
 
 function trimWord(word) {
-  return wordtrim();
+  return word.trim();
 }
 
 function getStringLength(word) {
-  return "word".length();
+  return word.length;
 }
 
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+    return a * b * c;
 }
 
 /* 

mandatory/3-function-output.js

@@ -1,16 +1,17 @@
-// Add comments to explain what this function does. You're meant to use Google!
+// Add comments to explain what this function does. You're meant to use Google! Math random gets numbers between 0-1. to get an integer we would need to use Math.floor as well as the function below can return decimals.
 function getRandomNumber() {
   return Math.random() * 10;
 }
 
-// Add comments to explain what this function does. You're meant to use Google!
+// Add comments to explain what this function does. You're meant to use Google! it will combine the two words without any space and return them.
 function combine2Words(word1, word2) {
   return word1.concat(word2);
 }
 
 function concatenate(firstWord, secondWord, thirdWord) {
   // Write the body of this function to concatenate three words together.
   // Look at the test case below to understand what this function is expected to return.
+  return firstWord.concat(" ", secondWord, " ", thirdWord);
 }
 
 /* 

mandatory/4-tax.js

@@ -5,7 +5,11 @@
   Sales tax is 20% of the price of the product.
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(product) {
+  let incTax=product*1.2;
+  return incTax;
+
+}
 
 /*
   CURRENCY FORMATTING
@@ -17,7 +21,11 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
+function addTaxAndFormatCurrency(currency) {
+let first=calculateSalesTax(currency);
+let second=first.toFixed(2);
+return `£${second}`;
+}
 
 /* 
 ===================================================