From 19457ec62b85c728269fc2d1e91073b75a225f36 Mon Sep 17 00:00:00 2001
From: Kos0606 <65927936+Kos0606@users.noreply.github.com>
Date: Mon, 7 Dec 2020 20:59:12 +0000
Subject: [PATCH 1/6] cd B-hello-world

---
 exercises/B-hello-world/exercise.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/exercises/B-hello-world/exercise.js b/exercises/B-hello-world/exercise.js
index b179ee953..b354a3eaf 100644
--- a/exercises/B-hello-world/exercise.js
+++ b/exercises/B-hello-world/exercise.js
@@ -1 +1,2 @@
 console.log("Hello world");
+console.log("Hello World. I just started learning JavaScript!".);

From 7a8cc27ce040c0fd9ee17275967716f6643ffbd0 Mon Sep 17 00:00:00 2001
From: Kos0606 <65927936+Kos0606@users.noreply.github.com>
Date: Mon, 7 Dec 2020 21:25:24 +0000
Subject: [PATCH 2/6] cd B-hello-world

---
 exercises/B-hello-world/exercise.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/exercises/B-hello-world/exercise.js b/exercises/B-hello-world/exercise.js
index b354a3eaf..18266df81 100644
--- a/exercises/B-hello-world/exercise.js
+++ b/exercises/B-hello-world/exercise.js
@@ -1,2 +1,3 @@
 console.log("Hello world");
-console.log("Hello World. I just started learning JavaScript!".);
+console.log('Hello World. I just started learning JavaScript!.');
+

From cd989ec65c3cc511d57e1a2d7461ec80742593aa Mon Sep 17 00:00:00 2001
From: Kos0606 <65927936+Kos0606@users.noreply.github.com>
Date: Mon, 7 Dec 2020 23:18:59 +0000
Subject: [PATCH 3/6] C-Variable

---
 exercises/B-hello-world/README.md   | 2 +-
 exercises/B-hello-world/exercise.js | 4 ++--
 exercises/C-variables/exercise.js   | 4 +++-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/exercises/B-hello-world/README.md b/exercises/B-hello-world/README.md
index a7b891d56..eb6b838dd 100644
--- a/exercises/B-hello-world/README.md
+++ b/exercises/B-hello-world/README.md
@@ -4,7 +4,7 @@ We'll do this in JavaScript, using something called `console.log()`.
 
 Inside of `exercise.js` there's a line of code that will print "Hello world!".
 
-### 1. Run the program
+### 1. Run the programcd
 
 * Open a terminal window
 * Change directory to this folder (`cd B-hello-world`)
diff --git a/exercises/B-hello-world/exercise.js b/exercises/B-hello-world/exercise.js
index 18266df81..0e81066c2 100644
--- a/exercises/B-hello-world/exercise.js
+++ b/exercises/B-hello-world/exercise.js
@@ -1,3 +1,3 @@
-console.log("Hello world");
-console.log('Hello World. I just started learning JavaScript!.');
+console.log('Hello World. I just started learning JavaScript!. I love it.');
+console.log(5);
 
diff --git a/exercises/C-variables/exercise.js b/exercises/C-variables/exercise.js
index a6bbb9786..4a9303f11 100644
--- a/exercises/C-variables/exercise.js
+++ b/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);
\ No newline at end of file

From 457e31787cf7fa6fd21a12d72d485526dd287be5 Mon Sep 17 00:00:00 2001
From: Kos0606 <65927936+Kos0606@users.noreply.github.com>
Date: Tue, 8 Dec 2020 22:16:46 +0000
Subject: [PATCH 4/6] Javascript-core-1

---
 exercises/D-strings/README.md                 |  2 +-
 exercises/D-strings/exercise.js               |  4 +++-
 exercises/E-strings-concatenation/exercise.js |  3 +++
 exercises/F-strings-methods/exercise.js       |  5 +++--
 exercises/F-strings-methods/exercise2.js      |  2 +-
 exercises/G-numbers/exercise.js               |  4 ++++
 exercises/I-floats/exercise.js                |  4 ++++
 exercises/J-functions/exercise.js             | 10 ++++++++--
 exercises/J-functions/exercise2.js            |  9 +++++++--
 exercises/K-functions-parameters/README.md    | 12 ++++++------
 exercises/K-functions-parameters/exercise.js  |  3 ++-
 exercises/K-functions-parameters/exercise2.js |  6 ++++--
 exercises/K-functions-parameters/exercise3.js |  3 +++
 exercises/K-functions-parameters/exercise4.js |  4 ++++
 exercises/K-functions-parameters/exercise5.js |  3 +++
 exercises/L-functions-nested/exercicise1.js   |  8 ++++++++
 16 files changed, 64 insertions(+), 18 deletions(-)
 create mode 100644 exercises/L-functions-nested/exercicise1.js

diff --git a/exercises/D-strings/README.md b/exercises/D-strings/README.md
index 1516f536e..fd0a664ae 100644
--- a/exercises/D-strings/README.md
+++ b/exercises/D-strings/README.md
@@ -19,7 +19,7 @@ console.log(messageType); // logs 'string'
 
 ## Exercise
 
-* Write a program that logs a message and its type
+- Write a program that logs a message and its type
 
 ## Expected result
 
diff --git a/exercises/D-strings/exercise.js b/exercises/D-strings/exercise.js
index 2cffa6a81..746513ef2 100644
--- a/exercises/D-strings/exercise.js
+++ b/exercises/D-strings/exercise.js
@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
-
+var message = "I love Code Your Future";
 console.log(message);
+console.log(typeof message);
+
diff --git a/exercises/E-strings-concatenation/exercise.js b/exercises/E-strings-concatenation/exercise.js
index 2cffa6a81..0cee7b761 100644
--- a/exercises/E-strings-concatenation/exercise.js
+++ b/exercises/E-strings-concatenation/exercise.js
@@ -1,3 +1,6 @@
 // Start by creating a variable `message`
+var greetingStart ="Hello, my name is";
+var firstName = "Kos";
+var message = greetingStart + " " + firstName;
 
 console.log(message);
diff --git a/exercises/F-strings-methods/exercise.js b/exercises/F-strings-methods/exercise.js
index 2cffa6a81..aa37d3c51 100644
--- a/exercises/F-strings-methods/exercise.js
+++ b/exercises/F-strings-methods/exercise.js
@@ -1,3 +1,4 @@
 // Start by creating a variable `message`
-
-console.log(message);
+var name ="Kos";
+var message = name.length;
+console.log("My name is Kos and my name is" + " " + message + " " + "characters long");
diff --git a/exercises/F-strings-methods/exercise2.js b/exercises/F-strings-methods/exercise2.js
index b4b46943d..c50400331 100644
--- a/exercises/F-strings-methods/exercise2.js
+++ b/exercises/F-strings-methods/exercise2.js
@@ -1,3 +1,3 @@
 const name = " Daniel  ";
-
+var message = name.trim();
 console.log(message);
diff --git a/exercises/G-numbers/exercise.js b/exercises/G-numbers/exercise.js
index 49e7bc00b..9b278fa24 100644
--- a/exercises/G-numbers/exercise.js
+++ b/exercises/G-numbers/exercise.js
@@ -1 +1,5 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+let numberOfStudents = 15;
+let numberOfMentors = 8;
+let total = numberOfStudents + numberOfMentors;
+console.log("Total number of students and mentors is:" + " " + total);
\ No newline at end of file
diff --git a/exercises/I-floats/exercise.js b/exercises/I-floats/exercise.js
index a5bbcd852..6dce84001 100644
--- a/exercises/I-floats/exercise.js
+++ b/exercises/I-floats/exercise.js
@@ -1,2 +1,6 @@
 var numberOfStudents = 15;
 var numberOfMentors = 8;
+var percentage_1 = numberOfStudents / (numberOfStudents + numberOfMentors)*100;
+var percentage_2 = numberOfMentors / (numberOfStudents + numberOfMentors)*100;
+console.log("Percentage students:" + " " + Math.round(percentage_1) + "%");
+console.log("Percentage mentors:" + " " + Math.round(percentage_2) + "%");
diff --git a/exercises/J-functions/exercise.js b/exercises/J-functions/exercise.js
index 0ae5850e5..a7b49ced4 100644
--- a/exercises/J-functions/exercise.js
+++ b/exercises/J-functions/exercise.js
@@ -1,7 +1,13 @@
 function halve(number) {
   // complete the function here
+  return number / 2;
 }
 
-var result = halve(12);
+var result_1 = halve(12);
+var result_2 = halve(24);
+var result_3 = halve(15);
+
+console.log(result_1);
+console.log(result_2);
+console.log(result_3);
 
-console.log(result);
diff --git a/exercises/J-functions/exercise2.js b/exercises/J-functions/exercise2.js
index 82ef5e780..702e5ab17 100644
--- a/exercises/J-functions/exercise2.js
+++ b/exercises/J-functions/exercise2.js
@@ -1,7 +1,12 @@
 function triple(number) {
   // complete function here
+  return number*3;
 }
 
-var result = triple(12);
+var result_1 = triple(12);
+var result_2 = triple(50);
+var result_3 = triple(120);
 
-console.log(result);
+console.log(result_1);
+console.log(result_2);
+console.log(result_3);
diff --git a/exercises/K-functions-parameters/README.md b/exercises/K-functions-parameters/README.md
index 02ab2a844..1614e221b 100644
--- a/exercises/K-functions-parameters/README.md
+++ b/exercises/K-functions-parameters/README.md
@@ -20,7 +20,7 @@ function add(num1, num2) {
 
 ## Exercise
 
-* Write a function that multiplies two numbers together
+- Write a function that multiplies two numbers together
 
 ## Expected result
 
@@ -30,7 +30,7 @@ function add(num1, num2) {
 
 ## Exercise 2
 
-* From scratch, write a function that divides two numbers
+- From scratch, write a function that divides two numbers
 
 ## Expected result
 
@@ -40,7 +40,7 @@ function add(num1, num2) {
 
 ## Exercise 3
 
-* Write a function that takes a name (a string) and returns a greeting
+- Write a function that takes a name (a string) and returns a greeting
 
 ## Expected result
 
@@ -50,8 +50,8 @@ Hello, my name is Daniel
 
 ## Exercise 4
 
-* Write a function that adds two numbers together
-* Call the function, passing `13` and `124` as parameters, and assigning the returned value to a variable `sum`
+- Write a function that adds two numbers together
+- Call the function, passing `13` and `124` as parameters, and assigning the returned value to a variable `sum`
 
 ## Expected result
 
@@ -61,7 +61,7 @@ Hello, my name is Daniel
 
 ## Exercise 5
 
-* Write a function that takes a name (a string) and an age (a number) and returns a greeting (a string)
+- Write a function that takes a name (a string) and an age (a number) and returns a greeting (a string)
 
 ## Expected result
 
diff --git a/exercises/K-functions-parameters/exercise.js b/exercises/K-functions-parameters/exercise.js
index 8d5db5e69..46e0bb26a 100644
--- a/exercises/K-functions-parameters/exercise.js
+++ b/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`
diff --git a/exercises/K-functions-parameters/exercise2.js b/exercises/K-functions-parameters/exercise2.js
index db7a8904b..831dff9f4 100644
--- a/exercises/K-functions-parameters/exercise2.js
+++ b/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);
+console.log(result);
\ No newline at end of file
diff --git a/exercises/K-functions-parameters/exercise3.js b/exercises/K-functions-parameters/exercise3.js
index 537e9f4ec..0a2f95b08 100644
--- a/exercises/K-functions-parameters/exercise3.js
+++ b/exercises/K-functions-parameters/exercise3.js
@@ -1,4 +1,7 @@
 // Write your function here
+function createGreeting(name) {
+    return "Hello, my name is" + " " + name;
+}
 
 var greeting = createGreeting("Daniel");
 
diff --git a/exercises/K-functions-parameters/exercise4.js b/exercises/K-functions-parameters/exercise4.js
index 7ab44589e..ba078c111 100644
--- a/exercises/K-functions-parameters/exercise4.js
+++ b/exercises/K-functions-parameters/exercise4.js
@@ -1,5 +1,9 @@
 // Declare your function first
+function Add(x, y) {
+    return x + y;
+}
 
 // Call the function and assign to a variable `sum`
+var sum = Add(13, 124);
 
 console.log(sum);
diff --git a/exercises/K-functions-parameters/exercise5.js b/exercises/K-functions-parameters/exercise5.js
index 7c5bcd605..0b3244010 100644
--- a/exercises/K-functions-parameters/exercise5.js
+++ b/exercises/K-functions-parameters/exercise5.js
@@ -1,4 +1,7 @@
 // Declare your function here
+function createLongGreeting(name, age) {
+    return "Hello, my name is" + " " + name + " " + "and I'm" + " " + age + " " + "years old";
+}
 
 const greeting = createLongGreeting("Daniel", 30);
 
diff --git a/exercises/L-functions-nested/exercicise1.js b/exercises/L-functions-nested/exercicise1.js
new file mode 100644
index 000000000..727cd5ed2
--- /dev/null
+++ b/exercises/L-functions-nested/exercicise1.js
@@ -0,0 +1,8 @@
+function participant(students, mentors) {
+    var percentStudents = students / (students + mentors)*100;
+    var percentMentors = mentors / (students + mentors)*100;
+    return "Percentage students:" + Math.round(percentStudents) + "%" + " " + " " + " " + "Percentage mentors:" + Math.round(percentMentors) + "%";
+
+}
+var result = participant(15, 8);
+console.log(result);

From 1d433a7d8df9e30f133e428d8146bd0e5b13dfea Mon Sep 17 00:00:00 2001
From: Kos0606 <65927936+Kos0606@users.noreply.github.com>
Date: Wed, 9 Dec 2020 23:10:46 +0000
Subject: [PATCH 5/6] JavaScrip-Core-1

---
 exercises/L-functions-nested/exercise.js | 63 ++++++++++++++++++++++++
 extra/1-currency-conversion.js           | 11 ++++-
 extra/2-piping.js                        | 21 ++++++--
 mandatory/1-syntax-errors.js             | 14 +++---
 mandatory/2-logic-error.js               | 19 ++++---
 5 files changed, 107 insertions(+), 21 deletions(-)

diff --git a/exercises/L-functions-nested/exercise.js b/exercises/L-functions-nested/exercise.js
index a5d377442..9c937fea0 100644
--- a/exercises/L-functions-nested/exercise.js
+++ b/exercises/L-functions-nested/exercise.js
@@ -3,3 +3,66 @@ var mentor2 = "Irina";
 var mentor3 = "Mimi";
 var mentor4 = "Rob";
 var mentor5 = "Yohannes";
+
+function nameToUppercase_1(mentor1) {
+    return mentor1.toUpperCase();
+}
+var writtenInUpperCase_1 = nameToUppercase_1("Daniel");
+console.log(writtenInUpperCase_1);
+
+function nameToUppercase_2(mentor2) {
+    return mentor2.toUpperCase();
+}
+var writtenInUpperCase_2 = nameToUppercase_2("Irina");
+console.log(writtenInUpperCase_2);
+
+function nameToUppercase_3(mentor3) {
+    return mentor3.toUpperCase(); 
+}
+var writtenInUpperCase_3 = nameToUppercase_3("Mimi");
+console.log(writtenInUpperCase_3);
+
+function nameToUppercase_4(mentor4) {
+    return mentor4.toUpperCase(); 
+}
+var writtenInUpperCase_4 = nameToUppercase_4("Rob");
+console.log(writtenInUpperCase_4);
+
+function nameToUppercase_5(mentor5) {
+    return mentor5.toUpperCase(); 
+}
+var writtenInUpperCase_5 = nameToUppercase_5("Yohannes");
+console.log(writtenInUpperCase_5);
+
+
+function createGreeting1(mentor1) {
+    return mentor1.toUpperCase();
+}
+var message1 ="HELLO" + " " + mentor1.toUpperCase();
+console.log(message1);
+
+
+function createGreeting2(mentor2) {
+    return mentor1.toUpperCase();
+}
+var message2 ="HELLO" + " " + mentor2.toUpperCase();
+console.log(message2);
+
+function createGreeting3(mentor3) {
+    return mentor3.toUpperCase();
+}
+var message3 ="HELLO" + " " + mentor3.toUpperCase();
+console.log(message3);
+
+function createGreeting4(mentor4) {
+    return mentor4.toUpperCase();
+}
+var message4 ="HELLO" + " " + mentor1.toUpperCase();
+console.log(message4);
+
+
+function createGreeting5(mentor5) {
+    return mentor5.toUpperCase();
+}
+var message5 ="HELLO" + " " + mentor1.toUpperCase();
+console.log(message5);
\ No newline at end of file
diff --git a/extra/1-currency-conversion.js b/extra/1-currency-conversion.js
index 70a2fe863..b18c6e400 100644
--- a/extra/1-currency-conversion.js
+++ b/extra/1-currency-conversion.js
@@ -5,7 +5,11 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(price1) {
+  return price1 * 1.4;
+
+}
+convertToUSD(3.15);
 
 /*
   CURRENCY FORMATTING
@@ -15,7 +19,10 @@ 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(price2) {
+  return price2 * 5.7 * 99/100;
+}
+ convertToBRL(30);
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
diff --git a/extra/2-piping.js b/extra/2-piping.js
index 067dd0f5b..595862f28 100644
--- a/extra/2-piping.js
+++ b/extra/2-piping.js
@@ -16,26 +16,37 @@
   the final result to the variable goodCode
 */
 
-function add() {
+function add(a, b) {
+    return a + b;
 
 }
+add(1, 3);
 
-function multiply() {
+function multiply(x, y) {
+    return x * y;
 
 }
+multiply(2, 3);
 
-function format() {
+function format(number) {
+    return "£" + number; 
 
 }
+format(16);
 
 const startingValue = 2
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode = 
+let badCode = "£" + (startingValue + 10) * 2;
+
+// This is bad practice because all written in one line and difficult to understand and possibly debugging.
 
 /* BETTER PRACTICE */
 
-let goodCode = 
+let adding = 10 + startingValue;
+let timing = adding * 2;
+let goodCode = "£" + timing;
+
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
diff --git a/mandatory/1-syntax-errors.js b/mandatory/1-syntax-errors.js
index 0a21afd1b..dd58c9cf6 100644
--- a/mandatory/1-syntax-errors.js
+++ b/mandatory/1-syntax-errors.js
@@ -1,18 +1,20 @@
 // 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;
+    return "The total is" + " " + (a + b);
 
-    return "The total is total"
+    
 }
-
+getTotal(23,5);
+ 
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
diff --git a/mandatory/2-logic-error.js b/mandatory/2-logic-error.js
index 3c578ad87..0823960a6 100644
--- a/mandatory/2-logic-error.js
+++ b/mandatory/2-logic-error.js
@@ -1,17 +1,20 @@
 // The syntax for this function is valid but it has an error, find it and fix it.
 
-function trimWord(word) {
-  return wordtrim();
-}
+var trimWord = "  CodeYourFuture "; 
+  trimWord.trim();
+
+
+var getWordLength = "A wild sentence appeared!";
+  getWordLength.length;
+
+
 
-function getWordLength(word) {
-  return "word".length();
-}
 
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+  
+  return a * b * c;
 }
+multiply(2, 3, 6);
 
 /* 
 ===================================================

From 760edc3557452125d0fa3b570a59bd272bcf101b Mon Sep 17 00:00:00 2001
From: Kos0606 <65927936+Kos0606@users.noreply.github.com>
Date: Thu, 10 Dec 2020 22:09:24 +0000
Subject: [PATCH 6/6] JavaScript-Core-1

---
 mandatory/2-logic-error.js     | 12 ++++++++----
 mandatory/3-function-output.js | 10 +++++++++-
 mandatory/4-tax.js             | 14 ++++++++++++--
 3 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/mandatory/2-logic-error.js b/mandatory/2-logic-error.js
index 0823960a6..5a0db5855 100644
--- a/mandatory/2-logic-error.js
+++ b/mandatory/2-logic-error.js
@@ -1,11 +1,15 @@
 // The syntax for this function is valid but it has an error, find it and fix it.
 
-var trimWord = "  CodeYourFuture "; 
-  trimWord.trim();
+function trimWord(word) {
+  return word.trim();
+}
+trimWord("  CodeYourFuture ");
 
 
-var getWordLength = "A wild sentence appeared!";
-  getWordLength.length;
+function getWordLength(word) {
+return word.length;
+}
+  getWordLength("A wild sentence appeared!");
 
 
 
diff --git a/mandatory/3-function-output.js b/mandatory/3-function-output.js
index c9221a200..8328ae072 100644
--- a/mandatory/3-function-output.js
+++ b/mandatory/3-function-output.js
@@ -1,18 +1,26 @@
 // Add comments to explain what this function does. You're meant to use Google!
+/* The Math.random() function returns a floating-point. Numbers are selected between 0 inclusive and 1 exclusive.
+However, Math.random()*10 select random floating point number between 0 and 10 */
+
 function getNumber() {
   return Math.random() * 10;
 }
 
 // Add comments to explain what this function does. You're meant to use Google!
+
+// This function takes the value of w1 and add the value of w2
 function s(w1, w2) {
   return w1.concat(w2);
 }
 
+
 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(" ").concat(secondWord).concat(" ").concat(thirdWord);
 }
-
+concatenate("code", "your", "future");
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
diff --git a/mandatory/4-tax.js b/mandatory/4-tax.js
index c9e41c691..711c28119 100644
--- a/mandatory/4-tax.js
+++ b/mandatory/4-tax.js
@@ -5,7 +5,12 @@
   Sales tax is 20% of the price of the product
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(price) {
+  var salesTax = price + price * 20/100;
+  return salesTax;
+
+}
+calculateSalesTax(15);
 
 /*
   CURRENCY FORMATTING
@@ -17,7 +22,12 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
+function addTaxAndFormatCurrency(price) {
+  var sellingPrice = price + price * 20/100;
+  return "£" + sellingPrice.toFixed(2);
+
+}
+addTaxAndFormatCurrency(17.5);
 
 /* 
 ===================================================