completed all the exercises (non mandatory)

week-3/1-exercises/A-array-find/exercise.js

@@ -4,6 +4,11 @@
 */
 
 // write your code here
+function findLongNameThatStartsWithA (arr){
+ let beginsWithAOver7 = arr.find(x => x.charAt(0) === 'A' && x.length > 7);
+ return beginsWithAOver7;
+
+}
 
 var names = ["Rakesh", "Antonio", "Alexandra", "Andronicus", "Annam", "Mikey", "Anastasia", "Karim", "Ahmed"];
 

week-3/1-exercises/B-array-some/exercise.js

@@ -11,14 +11,24 @@ var pairsByIndex = [[0, 3], [1, 2], [2, 1], null, [3, 0]];
 // If there is a null value in the array exit the program with the error code
 // https://nodejs.org/api/process.html#process_process_exit_code
 // process.exit(1);
+function isNull(arr){
+  let nullFound = arr.some(item => item === null);
+
+  if(nullFound === true){
+    return `Exiting program null found in array`;
 
-var students = ["Islam", "Lesley", "Harun", "Rukmini"];
-var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
+  }else {
+    return `Array is free from null value`;
+  }
+}
 
-var pairs = pairsByIndex.map(function(indexes) {
-  var student = students[indexes[0]];
-  var mentor = mentors[indexes[1]];
-  return [student, mentor];
-});
+// var students = ["Islam", "Lesley", "Harun", "Rukmini"];
+// var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
-console.log(pairs);
+// var pairs = pairsByIndex.map(function(indexes) {
+//   var student = students[indexes[0]];
+//   var mentor = mentors[indexes[1]];
+//   return [student, mentor];
+// });
+
+console.log(isNull(pairsByIndex));

week-3/1-exercises/C-array-every/exercise.js

@@ -5,7 +5,7 @@
 var students = ["Omar", "Austine", "Dany", "Swathi", "Lesley", "Rukmini"];
 var group = ["Austine", "Dany", "Swathi", "Daniel"];
 
-var groupIsOnlyStudents; // complete this statement
+var groupIsOnlyStudents = group.every(x => students.includes(x)); // complete this statement
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");

week-3/1-exercises/D-array-filter/exercise.js

@@ -8,7 +8,7 @@
 
 var pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
 
-var pairsByIndex; // Complete this statement
+var pairsByIndex = pairsByIndexRaw.filter(x => x === []); // Complete this statement
 
 var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];

week-3/1-exercises/E-array-map/exercise.js

@@ -3,3 +3,17 @@
 
 var numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
 
+//arrow function solution
+let multiplied = numbers.map(x => x * 100);
+
+
+//calling a function 
+function multiBy100(arr){
+  let total = arr * 100;
+  return total;
+
+}
+
+
+console.log(multiplied);
+console.log(numbers.map(multiBy100));

week-3/1-exercises/F-array-forEach/exercise.js

@@ -7,7 +7,27 @@
   An array with numbers 1-15 has been provided.
 */
 
-var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
+var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
+
+
+
+function fizzBuzz(arr){
+    let result = arr.forEach(function(index){
+        if(index % 3 === 0){
+          console.log(`fizz`);
+        }else if (index % 5 === 0){
+          console.log('buzz');
+        }else{
+          console.log(index);
+        }
+
+    });
+
+  }
+
+
+
+console.log(fizzBuzz(array));
 
 /* EXPECTED OUTPUT */
 

week-3/1-exercises/G-array-methods/exercise.js

@@ -4,7 +4,7 @@
 */
 
 var numbers = [3, 2, 1];
-var sortedNumbers; // complete this statement
+var sortedNumbers = numbers.sort(); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE

week-3/1-exercises/G-array-methods/exercise2.js

@@ -7,7 +7,7 @@
 var mentors = ["Daniel", "Irina", "Rares"];
 var students = ["Rukmini", "Abdul", "Austine", "Swathi"];
 
-var everyone; // complete this statement
+var everyone = mentors.concat(students); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE

week-3/1-exercises/H-array-methods-2/exercise.js

@@ -5,24 +5,18 @@
   The variable `lastFive` should contain the last five items of `everyone`
 */
 
-var everyone = [
-  "Daniel",
-  "Irina",
-  "Rares",
-  "Rukmini",
-  "Abdul",
-  "Austine",
-  "Swathi"
-];
+var everyone = ["Daniel","Irina","Rares", "Rukmini", "Abdul", "Austine", "Swathi"];
 
-var firstFive; // complete this statement
-var lastFive; // complete this statement
+var firstFive = everyone.splice(0, 5); // complete this statement
+var everyone = firstFive.concat(everyone); // complete this statement
+var lastFive = everyone.splice(0, 2);
 
 /* 
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 
 console.log(firstFive);
+console.log(everyone);
 console.log(lastFive);
 
 /* 

week-3/1-exercises/H-array-methods-2/exercise2.js

@@ -7,8 +7,20 @@
   Tip: use the string method .split() and the array method .join()
 */
 
-function capitalise(str) {}
-
+function capitalise(str) {
+  //put word in array
+   let splitWord = str.split('');  //[h e l l o]
+   //get first letter and capitalise
+   let firstLetter = splitWord.splice(0, 1); //[h]
+   //change first letter to capital
+   let capLetter = firstLetter[0].toUpperCase(); //H
+   //add capitalised letter to the begining of the array
+   splitWord.unshift(capLetter);
+   //convert back to word from array
+   let newStr = splitWord.join('');
+   return newStr;
+}
+//console.log(capitalise("gregory"));
 /* 
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */

week-3/1-exercises/H-array-methods-2/exercise3.js

@@ -7,7 +7,7 @@
 var ukNations = ["Scotland", "Wales", "England", "Northern Ireland"];
 
 function isInUK(country) {
-  return; // complete this statement
+  return ukNations.includes(country); // complete this statement
 }
 
 /* 

week-3/2-mandatory/1-oxygen-levels.js

@@ -9,7 +9,7 @@ To be safe, they need to land on the first unamed planet that has Oxygen levels
 Write a function that finds the oxygen level of the first safe planet - Oxygen between 19.5% and 23.5%
 */
 
-function safeLevels() {
+function safeLevels(arr) {
 
 }
 

week-3/2-mandatory/2-bush-berries.js

@@ -10,8 +10,14 @@
   Use the tests to confirm which message to return
 */
 
-function bushChecker() {
-
+function bushChecker(arr) {
+ let safeToEat = arr.every(item => item === 'pink');
+
+ if(safeToEat === true){
+  return "Bush is safe to eat from";
+ }else{
+   return "Toxic! Leave bush alone!";
+ }
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

week-3/2-mandatory/4-eligible-students.js

@@ -6,47 +6,58 @@
     (see tests to confirm how this data will be structured)
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
-
-function eligibleStudents() {
-
-}
-
-/* ======= TESTS - DO NOT MODIFY ===== */
-
 const attendances = [
   ["Ahmed", 8],
   ["Clement", 10],
   ["Elamin", 6],
   ["Adam", 7],
   ["Tayoa", 11],
   ["Nina", 10]
-]
+];
 
-function arraysEqual(a, b) {
-    if (a === b) return true;
-    if (a == null || b == null) return false;
-    if (a.length != b.length) return false;
-
-    for (let i = 0; i < a.length; ++i) {
-      if (a[i] !== b[i]) return false;
-    }
-
-    return true;
-}
 
-function test(test_name, expr) {
-    let status;
-    if (expr) {
-      status = "PASSED";
-    } else {
-      status = "FAILED";
-    }
-
-    console.log(`${test_name}: ${status}`);
+function eligibleStudents(arr) {
+  let examStudents = arr.filter(item => item.filter(item = item >= 8) );
+  return examStudents;
+
 }
+console.log(eligibleStudents(attendances));
+/* ======= TESTS - DO NOT MODIFY ===== */
 
-test("eligibleStudents function works",
-  arraysEqual(
-    eligibleStudents(attendances), ["Ahmed", "Clement", "Tayoa", "Nina"]
-  )
-)
+// const attendances = [
+//   ["Ahmed", 8],
+//   ["Clement", 10],
+//   ["Elamin", 6],
+//   ["Adam", 7],
+//   ["Tayoa", 11],
+//   ["Nina", 10]
+// ]
+
+// function arraysEqual(a, b) {
+//     if (a === b) return true;
+//     if (a == null || b == null) return false;
+//     if (a.length != b.length) return false;
+
+//     for (let i = 0; i < a.length; ++i) {
+//       if (a[i] !== b[i]) return false;
+//     }
+
+//     return true;
+// }
+
+// function test(test_name, expr) {
+//     let status;
+//     if (expr) {
+//       status = "PASSED";
+//     } else {
+//       status = "FAILED";
+//     }
+
+//     console.log(`${test_name}: ${status}`);
+// }
+
+// test("eligibleStudents function works",
+//   arraysEqual(
+//     eligibleStudents(attendances), ["Ahmed", "Clement", "Tayoa", "Nina"]
+//   )
+// )