From 9db6efc22e092d40e4356dc94df41eb7ca43cd2e Mon Sep 17 00:00:00 2001
From: Diego Harera <104278852+diegoharera@users.noreply.github.com>
Date: Mon, 4 Jul 2022 23:11:37 +0200
Subject: [PATCH 1/4] compled exercices A to D

---
 exercises/B-hello-world/exercise.js | 6 +++++-
 exercises/C-variables/exercise.js   | 5 ++++-
 exercises/D-strings/exercise.js     | 3 ++-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/exercises/B-hello-world/exercise.js b/exercises/B-hello-world/exercise.js
index b179ee953..ee1c5b554 100644
--- a/exercises/B-hello-world/exercise.js
+++ b/exercises/B-hello-world/exercise.js
@@ -1 +1,5 @@
-console.log("Hello world");
+// console.log("Hello world");
+//console.log("save the world");
+// console.log("create the world","happy","code your");
+// console.log(save the world);
+console.log(39);
\ No newline at end of file
diff --git a/exercises/C-variables/exercise.js b/exercises/C-variables/exercise.js
index a6bbb9786..4be9ec829 100644
--- a/exercises/C-variables/exercise.js
+++ b/exercises/C-variables/exercise.js
@@ -1,3 +1,6 @@
 // Start by creating a variable `greeting`
-
+let greeting = "hello Africa";
+console.log(greeting);
+console.log(greeting);
+console.log(greeting);
 console.log(greeting);
diff --git a/exercises/D-strings/exercise.js b/exercises/D-strings/exercise.js
index 2cffa6a81..735143c29 100644
--- a/exercises/D-strings/exercise.js
+++ b/exercises/D-strings/exercise.js
@@ -1,3 +1,4 @@
 // Start by creating a variable `message`
-
+let message = "my name is Harera";
 console.log(message);
+console.log(typeof message);
\ No newline at end of file

From 483ad454ac6375a11f5214169dfb45755ef57a9f Mon Sep 17 00:00:00 2001
From: Diego Harera <104278852+diegoharera@users.noreply.github.com>
Date: Mon, 4 Jul 2022 23:24:25 +0200
Subject: [PATCH 2/4] i compled E

---
 exercises/E-strings-concatenation/exercise.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/exercises/E-strings-concatenation/exercise.js b/exercises/E-strings-concatenation/exercise.js
index 2cffa6a81..2ccfd1977 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`
+let greetingStart = "hello,my name is ";
+let name = "DIego";
 
-console.log(message);
+let greeting = greetingStart + name;
+console.log(greeting);

From 1492cde1d459544a329d5064201410208614ca57 Mon Sep 17 00:00:00 2001
From: Diego Harera <104278852+diegoharera@users.noreply.github.com>
Date: Mon, 4 Jul 2022 23:57:56 +0200
Subject: [PATCH 3/4] i completed exercice f

---
 exercises/F-strings-methods/exercise.js  | 4 +++-
 exercises/F-strings-methods/exercise2.js | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/exercises/F-strings-methods/exercise.js b/exercises/F-strings-methods/exercise.js
index 2cffa6a81..5807ed59c 100644
--- a/exercises/F-strings-methods/exercise.js
+++ b/exercises/F-strings-methods/exercise.js
@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
-
+let name = "Diego";
+let amount = name.length;
+let message = "hello,my name is " + name + " and my name is " + amount + " characters long";
 console.log(message);
diff --git a/exercises/F-strings-methods/exercise2.js b/exercises/F-strings-methods/exercise2.js
index b4b46943d..b532a3106 100644
--- a/exercises/F-strings-methods/exercise2.js
+++ b/exercises/F-strings-methods/exercise2.js
@@ -1,3 +1,3 @@
 const name = " Daniel  ";
-
+const message = name.trim();
 console.log(message);

From b49b69b314a822096772f996108aaa6b9d25c5dd Mon Sep 17 00:00:00 2001
From: Diego Harera <104278852+diegoharera@users.noreply.github.com>
Date: Wed, 6 Jul 2022 23:19:18 +0200
Subject: [PATCH 4/4] i completed G/l/k-/l and mandatory

---
 exercises/G-numbers/exercise.js               |  6 ++++++
 exercises/I-floats/exercise.js                |  7 +++++++
 exercises/J-functions/exercise.js             |  1 +
 exercises/J-functions/exercise2.js            |  2 ++
 exercises/K-functions-parameters/exercise.js  |  5 ++---
 exercises/K-functions-parameters/exercise2.js |  7 ++++---
 exercises/K-functions-parameters/exercise3.js |  7 ++++---
 exercises/K-functions-parameters/exercise4.js |  6 ++++--
 exercises/K-functions-parameters/exercise5.js |  8 ++++----
 exercises/L-functions-nested/exercise.js      |  9 +++++++++
 mandatory/1-syntax-errors.js                  | 14 ++++++--------
 mandatory/2-logic-error.js                    |  9 +++------
 mandatory/3-function-output.js                |  3 +++
 mandatory/4-tax.js                            | 10 ++++++----
 14 files changed, 61 insertions(+), 33 deletions(-)

diff --git a/exercises/G-numbers/exercise.js b/exercises/G-numbers/exercise.js
index 49e7bc00b..d89f5108b 100644
--- a/exercises/G-numbers/exercise.js
+++ b/exercises/G-numbers/exercise.js
@@ -1 +1,7 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+let numberOfStudents = 15;
+let numberOfMentors = 8;
+let total = numberOfStudents + numberOfMentors;
+console.log("NumberOfStudents:", numberOfStudents);
+console.log("let numberOfMentors:", numberOfMentors);
+console.log("Total number of students and mentors:", total);
diff --git a/exercises/I-floats/exercise.js b/exercises/I-floats/exercise.js
index a5bbcd852..25506e449 100644
--- a/exercises/I-floats/exercise.js
+++ b/exercises/I-floats/exercise.js
@@ -1,2 +1,9 @@
 var numberOfStudents = 15;
 var numberOfMentors = 8;
+
+let studentPercentage = (numberOfStudents / 23) * 100;
+let mentorsPercentage = (numberOfMentors / 23) * 100;
+let studentsResult = Math.round(studentPercentage);
+let mentorsResult = Math.round(mentorsPercentage);
+console.log("Percentage students:", studentsResult + "%");
+console.log("Percentage students:", mentorsResult + "%");
diff --git a/exercises/J-functions/exercise.js b/exercises/J-functions/exercise.js
index 0ae5850e5..138e3180a 100644
--- a/exercises/J-functions/exercise.js
+++ b/exercises/J-functions/exercise.js
@@ -1,5 +1,6 @@
 function halve(number) {
   // complete the function here
+  return number / 2
 }
 
 var result = halve(12);
diff --git a/exercises/J-functions/exercise2.js b/exercises/J-functions/exercise2.js
index 82ef5e780..1949bb03f 100644
--- a/exercises/J-functions/exercise2.js
+++ b/exercises/J-functions/exercise2.js
@@ -1,5 +1,7 @@
 function triple(number) {
   // complete function here
+
+  return number * 3;
 }
 
 var result = triple(12);
diff --git a/exercises/K-functions-parameters/exercise.js b/exercises/K-functions-parameters/exercise.js
index 8d5db5e69..386ea242f 100644
--- a/exercises/K-functions-parameters/exercise.js
+++ b/exercises/K-functions-parameters/exercise.js
@@ -1,9 +1,8 @@
 // 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`
 var result = multiply(3, 4);
-
 console.log(result);
diff --git a/exercises/K-functions-parameters/exercise2.js b/exercises/K-functions-parameters/exercise2.js
index db7a8904b..38f5a7143 100644
--- a/exercises/K-functions-parameters/exercise2.js
+++ b/exercises/K-functions-parameters/exercise2.js
@@ -1,5 +1,6 @@
 // Declare your function first
-
-var result = divide(3, 4);
-
+function divide(a, b) {
+  return a / b;
+}
+var result = divide(1.5, 2);
 console.log(result);
diff --git a/exercises/K-functions-parameters/exercise3.js b/exercises/K-functions-parameters/exercise3.js
index 537e9f4ec..7499f5ead 100644
--- a/exercises/K-functions-parameters/exercise3.js
+++ b/exercises/K-functions-parameters/exercise3.js
@@ -1,5 +1,6 @@
 // Write your function here
-
-var greeting = createGreeting("Daniel");
-
+function createGreeting(name) {
+  return "Hello my name is " + name;
+}
+var greeting = createGreeting("Diego");
 console.log(greeting);
diff --git a/exercises/K-functions-parameters/exercise4.js b/exercises/K-functions-parameters/exercise4.js
index 7ab44589e..6d6bfb1c4 100644
--- a/exercises/K-functions-parameters/exercise4.js
+++ b/exercises/K-functions-parameters/exercise4.js
@@ -1,5 +1,7 @@
 // Declare your function first
-
+function add(a, b) {
+  return a + b;
+}
 // Call the function and assign to a variable `sum`
-
+let 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..c1e7e1bc0 100644
--- a/exercises/K-functions-parameters/exercise5.js
+++ b/exercises/K-functions-parameters/exercise5.js
@@ -1,5 +1,5 @@
-// Declare your function here
-
-const greeting = createLongGreeting("Daniel", 30);
-
+function createLongGreeting(name, age) {
+  return "Hello my name is " + name + " and I'm " + age + " years old";
+}
+const greeting = createLongGreeting("Diego", 30);
 console.log(greeting);
diff --git a/exercises/L-functions-nested/exercise.js b/exercises/L-functions-nested/exercise.js
index a5d377442..066c24750 100644
--- a/exercises/L-functions-nested/exercise.js
+++ b/exercises/L-functions-nested/exercise.js
@@ -3,3 +3,12 @@ var mentor2 = "Irina";
 var mentor3 = "Mimi";
 var mentor4 = "Rob";
 var mentor5 = "Yohannes";
+function greet(name) {
+  let greeting = "Hello " + name;
+  return greeting.toLocaleUpperCase();
+}
+console.log(greet(mentor1));
+console.log(greet(mentor2));
+console.log(greet(mentor3));
+console.log(greet(mentor4));
+console.log(greet(mentor5));
diff --git a/mandatory/1-syntax-errors.js b/mandatory/1-syntax-errors.js
index a10cc9ac2..864e73226 100644
--- a/mandatory/1-syntax-errors.js
+++ b/mandatory/1-syntax-errors.js
@@ -1,16 +1,14 @@
 // 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 total";
+  let total = a + b;
+  return "The total is " + total;
 }
 
 /* 
diff --git a/mandatory/2-logic-error.js b/mandatory/2-logic-error.js
index 9cca7603b..f51687d6c 100644
--- a/mandatory/2-logic-error.js
+++ b/mandatory/2-logic-error.js
@@ -1,16 +1,13 @@
 // 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;
 }
 
 /* 
diff --git a/mandatory/3-function-output.js b/mandatory/3-function-output.js
index 5a953ba60..7008849d0 100644
--- a/mandatory/3-function-output.js
+++ b/mandatory/3-function-output.js
@@ -1,9 +1,11 @@
 // Add comments to explain what this function does. You're meant to use Google!
+// The Math. random() function returns a floating-point, pseudo-random number in the range 0 to less than 1 (inclusive of 0, but not 1) with approximately uniform distribution over that range
 function getRandomNumber() {
   return Math.random() * 10;
 }
 
 // Add comments to explain what this function does. You're meant to use Google!
+// The concat() method is used to merge two or more arrays. This method does not change the existing arrays, but instead returns a new array.
 function combine2Words(word1, word2) {
   return word1.concat(word2);
 }
@@ -11,6 +13,7 @@ function combine2Words(word1, 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);
 }
 
 /* 
diff --git a/mandatory/4-tax.js b/mandatory/4-tax.js
index ba77c7ae2..b71534e7b 100644
--- a/mandatory/4-tax.js
+++ b/mandatory/4-tax.js
@@ -5,7 +5,9 @@
   Sales tax is 20% of the price of the product.
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(productPrice) {
+  return productPrice + productPrice * 0.2;
+}
 
 /*
   CURRENCY FORMATTING
@@ -16,9 +18,9 @@ function calculateSalesTax() {}
 
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
-
-function addTaxAndFormatCurrency() {}
-
+function addTaxAndFormatCurrency(number) {
+  return "£" + calculateSalesTax(number).toFixed(2);
+}
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====