Javascript/week3/nihal

.vscode/launch.json

@@ -0,0 +1,18 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+
+        {
+            "type": "pwa-node",
+            "request": "launch",
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}\\week-1\\2-mandatory\\3-function-output.js"
+        }
+    ]
+}

week-1/1-exercises/B-hello-world/exercise.js

@@ -1 +1,2 @@
+var name = "Hello world!";
 console.log("Hello world");

week-1/1-exercises/C-variables/exercise.js

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

week-1/1-exercises/D-strings/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
+var message = "This is a string";
+var messageType = typeof message;
 
-console.log(message);
+console.log(messageType);

week-1/1-exercises/E-strings-concatenation/exercise.js

@@ -1,3 +1,8 @@
 // Start by creating a variable `message`
+var greetingStart = "Hello, my name is ";
+var name = "Nihal";
+
+var greeting = greetingStart + name;
+
+console.log(greeting);
 
-console.log(message);

week-1/1-exercises/F-strings-methods/exercise.js

@@ -1,3 +1,6 @@
 // Start by creating a variable `message`
+var name = "Daniel";
+var nameLength = name.length;
+
+console.log(nameLength);
 
-console.log(message);

week-1/1-exercises/F-strings-methods/exercise2.js

@@ -1,3 +1,4 @@
-const name = " Daniel  ";
+var name = "Daniel";
+var nameLowerCase = name.toLowerCase();
 
-console.log(message);
+console.log(nameLowerCase);

week-1/1-exercises/G-numbers/exercise.js

@@ -1 +1,4 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+var numberOfStudent = 15;
+var numberOfMentors = 8;
+var sum = numberOfStudent + numberOfMentors;

week-1/1-exercises/I-floats/exercise.js

@@ -1,2 +1,4 @@
 var numberOfStudents = 15;
-var numberOfMentors = 8;
+var numberOfStudents = 8;
+var total = numberOfStudents + numberOfStudents;
+var percentagOfStudents = Math.round((numberOfStudents/total)*100);

week-1/1-exercises/K-functions-parameters/exercise.js

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

week-1/1-exercises/K-functions-parameters/exercise2.js

@@ -1,4 +1,6 @@
-// Declare your function first
+function divide(a, b) {
+    return a/b;
+}
 
 var result = divide(3, 4);
 

week-1/1-exercises/K-functions-parameters/exercise3.js

@@ -1,5 +1,7 @@
-// Write your function here
+function createGreeting(num1, num2) {
+    return num1 + num2;
+}
 
-var greeting = createGreeting("Daniel");
+var greeting = createGreeting("Hello, my name is ", "Nihal.");
 
 console.log(greeting);

week-1/2-mandatory/1-syntax-errors.js

@@ -2,15 +2,15 @@
 
 // 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";
+return 'Hello, my name is ' + name + 'and I am '+ age + 'years old';
 
 function getAddition(a, b) {
-    total = a ++ b
+    total = a + b
 
     // Use string interpolation here
     return "The total is %{total}"

week-1/2-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 getWordLength(word) {
-  return "word".length()
+  return word.length;
 }
 
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+  return a * b * c;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== 
@@ -22,14 +21,23 @@ To run these tests type `node 2-logic-error` into your terminal
 function test(test_name, expr) {
   let status;
   if (expr) {
-      status = "PASSED"
+      status = 'PASSED';
   } else {
-      status = "FAILED"
+      status = 'FAILED';
   }
 
-  console.log(`${test_name}: ${status}`)
+  console.log(`${test_name}: ${status}`);
 }
 
-test("fixed trimWord function", trimWord("  CodeYourFuture ") === "CodeYourFuture")
-test("fixed wordLength function", getWordLength("A wild sentence appeared!") === 25)
-test("fixed multiply function", multiply(2,3,6) === 36)
+test(
+  "fixed trimWord function",
+   trimWord("  CodeYourFuture ") === "CodeYourFuture"
+   );
+test(
+  "fixed wordLength function",
+   getWordLength("A wild sentence appeared!") === 25
+   );
+test(
+  "fixed multiply function",
+   multiply(2,3,6) === 36
+   );

week-1/2-mandatory/3-function-output.js

@@ -1,16 +1,22 @@
 // Add comments to explain what this function does. You're meant to use Google!
+
+//returen random number between 0 ans 9.99
 function getNumber() {
   return Math.random() * 10;
 }
 
 // Add comments to explain what this function does. You're meant to use Google!
+
+// this function takes one array and merges into another
+// if first parameter w1 is a string, then it will do just a string concatenation
 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 to expect in return
+  return `${firstWord} ${secondWord} ${thirdWord}`;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== 
@@ -22,23 +28,23 @@ To run these tests type `node 3-function-output` into your terminal
 function test(test_name, expr) {
   let status;
   if (expr) {
-    status = "PASSED";
+    status = 'PASSED';
   } else {
-    status = "FAILED";
+    status = 'FAILED';
   }
 
   console.log(`${test_name}: ${status}`);
 }
 
 test(
   "concatenate function - case 1 works",
-  concatenate("code", "your", "future") === "code your future"
+  concatenate('code', 'your', 'future') === 'code your future'
 );
 test(
   "concatenate function - case 2 works",
-  concatenate("I", "like", "pizza") === "I like pizza"
+  concatenate('I', 'like', 'pizza') === 'I like pizza'
 );
 test(
   "concatenate function - case 3 works",
-  concatenate("I", "am", 13) === "I am 13"
+  concatenate('I', 'am', 13) === 'I am 13'
 );

week-1/2-mandatory/4-tax.js

@@ -5,7 +5,10 @@
   Sales tax is 20% of the price of the product
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(price) {
+  const tax = price * 0.2;
+  const totalPrice = tax + price;
+  return totalPrice;
 
 /*
   CURRENCY FORMATTING
@@ -28,9 +31,9 @@ To run these tests type `node 4-tax.js` into your terminal
 function test(test_name, expr) {
   let status;
   if (expr) {
-    status = "PASSED";
+    status = 'PASSED';
   } else {
-    status = "FAILED";
+    status = 'FAILED';
   }
 
   console.log(`${test_name}: ${status}`);
@@ -51,4 +54,6 @@ test(
   "formatCurrency function - case 2 works",
   formatCurrency(17.5) === "£21.00"
 );
-test("formatCurrency function - case 3 works", formatCurrency(34) === "£40.80");
+test(
+  "formatCurrency function - case 3 works", formatCurrency(34) 
+  === "£40.80");

week-2/1-exercises/B-boolean-literals/exercise.js

@@ -5,12 +5,14 @@
   Add the required variables with the correct boolean values assigned.
 */
 
-var codeYourFutureIsGreat = true;
-
-/* 
-  DO NOT EDIT BELOW THIS LINE
-  --------------------------- */
+let codeYourFutureIsGreat = true;
+let mozafarIsCool = false;
+let calculationCorrect = true;
+let moreThan10Students = false;
 
+ /* DO NOT EDIT BELOW THIS LINE
+  --------------------------- 
+*/
 console.log("Is Code Your Future great?", codeYourFutureIsGreat);
 console.log("Is Mozafar cool?", mozafarIsCool);
 console.log("Does 1 + 1 = 2?", calculationCorrect);

week-2/1-exercises/C-comparison-operators/exercise.js

@@ -7,14 +7,15 @@
 
 var studentCount = 16;
 var mentorCount = 9;
-var moreStudentsThanMentors; // finish this statement
+var sum = studentCount + mentorCount;
+var moreStudentsThanMentors = studentCount > mentorCount; // finish this statement
 
 var roomMaxCapacity = 25;
-var enoughSpaceInRoom; // finish this statement
+var enoughSpaceInRoom = roomMaxCapacity === sum; // finish this statement
 
 var personA = "Daniel";
 var personB = "Irina";
-var sameName; // finish this statement
+var sameName = personA === personB; // finish this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE

week-2/1-exercises/D-predicates/exercise.js

@@ -7,12 +7,13 @@
 
 // Finish the predicate function to test if the passed number is negative (less than zero)
 function isNegative(number) {
+  return number > 0;
 
 }
 
 // Finish the predicate function to test if the passed number is between 0 and 10
 function isBetweenZeroAnd10(number) {
-
+return number > 0 && number < 10;
 }
 
 /* 

week-2/1-exercises/E-conditionals/exercise.js

@@ -8,6 +8,12 @@
 
 var name = "Daniel";
 var danielsRole = "mentor";
+if (danielsRole === `mentor`) {
+  console.log("Hi, I'm Daniel, I'm a mentor.");
+}
+else {
+  console.log("Hi, I'm Daniel, I'm a student.");
+}
 
 /* 
 EXPECTED RESULT

week-2/1-exercises/F-logical-operators/exercise.js

@@ -11,14 +11,14 @@ var cssLevel = 4;
 
 // Finish the statement to check whether HTML, CSS knowledge are above 5
 // (hint: use the comparison operator from before)
-var htmlLevelAbove5;
-var cssLevelAbove5;
+var htmlLevelAbove5 = htmlLevel > 5;
+var cssLevelAbove5 = cssLevel > 5;
 
 // Finish the next two statement
 // Use the previous variables and logical operators
 // Do not "hardcode" the answers
-var cssAndHtmlAbove5;
-var cssOrHtmlAbove5;
+var cssAndHtmlAbove5 = htmlLevelAbove5 && cssLevelAbove5;
+var cssOrHtmlAbove5 = htmlLevelAbove5 || cssLevelAbove5;
 
 /* 
   DO NOT EDIT BELOW THIS LINE

week-2/1-exercises/F-logical-operators/exercise2.js

@@ -5,7 +5,29 @@
   Update the code so that you get the expected result.
 */
 
-function isNegative() {}
+function isNegative(number) {
+return number < 0;
+}
+
+
+function isNegative(number) {
+  return number < 0;
+  }
+
+
+  function isBetween5and10(number) {
+    return number >= 5 && number <= 10;
+    }
+
+
+    function isShortName(name) {
+      return name.length >= 6 && name.length <= 10;
+      }
+
+
+      function startsWithD(name) {
+        return name[0] === "D";
+        }
 
 /* 
   DO NOT EDIT BELOW THIS LINE