From 1cfe77b8f1e4371382da024a0e55ac794f4f2cee Mon Sep 17 00:00:00 2001
From: Junitalama <113072416+Junitalama@users.noreply.github.com>
Date: Tue, 14 Mar 2023 18:58:03 +0000
Subject: [PATCH 1/5] exercise done

---
 1-exercises/A-array-find/exercise.js   |  5 ++++-
 1-exercises/B-array-some/exercise.js   |  6 +++++-
 1-exercises/C-array-every/exercise.js  | 14 +++++++++++++-
 1-exercises/D-array-filter/exercise.js | 17 ++++++++++++++++-
 4 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/1-exercises/A-array-find/exercise.js b/1-exercises/A-array-find/exercise.js
index 35902fed..9e6277e3 100644
--- a/1-exercises/A-array-find/exercise.js
+++ b/1-exercises/A-array-find/exercise.js
@@ -16,8 +16,11 @@ let names = [
   "Karim",
   "Ahmed",
 ];
+ function longNameWithA(name) {
+  return name.length > 7;
+}
 
-let longNameThatStartsWithA = findLongNameThatStartsWithA(names);
+let longNameThatStartsWithA = names.find(longNameWithA);
 
 console.log(longNameThatStartsWithA);
 
diff --git a/1-exercises/B-array-some/exercise.js b/1-exercises/B-array-some/exercise.js
index fddc69ee..63a56d16 100644
--- a/1-exercises/B-array-some/exercise.js
+++ b/1-exercises/B-array-some/exercise.js
@@ -11,7 +11,11 @@ let 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);
-
+ for (let pair of pairsByIndex){
+  if (!pair){
+    process.exit(1);
+  }
+ }
 let students = ["Islam", "Lesley", "Harun", "Rukmini"];
 let mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
diff --git a/1-exercises/C-array-every/exercise.js b/1-exercises/C-array-every/exercise.js
index 347b9632..99ec31d3 100644
--- a/1-exercises/C-array-every/exercise.js
+++ b/1-exercises/C-array-every/exercise.js
@@ -5,7 +5,19 @@
 let students = ["Omar", "Austine", "Dany", "Swathi", "Lesley", "Rukmini"];
 let group = ["Austine", "Dany", "Swathi", "Daniel"];
 
-let groupIsOnlyStudents; // complete this statement
+function containsStudent (groupWithStudents){
+  for (let name of groupWithStudents){
+    if(group.includes(students)){
+return true;
+    } else{
+      return false;
+    }
+
+  }
+
+}
+
+let groupIsOnlyStudents = students.every(containsStudent);
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");
diff --git a/1-exercises/D-array-filter/exercise.js b/1-exercises/D-array-filter/exercise.js
index 51837028..45d92dac 100644
--- a/1-exercises/D-array-filter/exercise.js
+++ b/1-exercises/D-array-filter/exercise.js
@@ -7,8 +7,23 @@
 */
 
 let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
+function validArray(pairsByIndexRaw){
+ for (let item of pairsByIndexRaw){
+  if(item === [0,1]){
+    return true;
+  }else{
+    return false;
+  }
+
+ }
+}
+
+let pairsByIndex = pairsByIndexRaw.filter(validArray);
+
+
+
+
 
-let pairsByIndex; // Complete this statement
 
 let students = ["Islam", "Lesley", "Harun", "Rukmini"];
 let mentors = ["Daniel", "Irina", "Mozafar", "Luke"];

From 9ab3c564e15e0c009f8c20d903662fea2a60d4b6 Mon Sep 17 00:00:00 2001
From: Junitalama <113072416+Junitalama@users.noreply.github.com>
Date: Thu, 16 Mar 2023 00:21:19 +0000
Subject: [PATCH 2/5] exercise done except for each method

---
 1-exercises/D-array-filter/exercise.js      | 19 +++++++------------
 1-exercises/E-array-map/exercise.js         | 12 +++++++++++-
 1-exercises/F-array-forEach/exercise.js     |  6 ++++++
 1-exercises/G-array-methods/exercise.js     |  2 +-
 1-exercises/G-array-methods/exercise2.js    |  2 +-
 1-exercises/H-array-methods-2/exercise.js   |  4 ++--
 1-exercises/H-array-methods-2/exercise2.js  |  7 ++++++-
 1-exercises/H-array-methods-2/exercise3.js  |  2 +-
 1-exercises/I-string-replace/exercise.js    |  2 +-
 1-exercises/J-string-substring/exercise.js  |  2 +-
 1-exercises/J-string-substring/exercise2.js | 10 +++++-----
 2-mandatory/1-create-functions.js           |  9 ++++++---
 12 files changed, 48 insertions(+), 29 deletions(-)

diff --git a/1-exercises/D-array-filter/exercise.js b/1-exercises/D-array-filter/exercise.js
index 45d92dac..628ca2ce 100644
--- a/1-exercises/D-array-filter/exercise.js
+++ b/1-exercises/D-array-filter/exercise.js
@@ -7,18 +7,13 @@
 */
 
 let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
-function validArray(pairsByIndexRaw){
- for (let item of pairsByIndexRaw){
-  if(item === [0,1]){
-    return true;
-  }else{
-    return false;
-  }
-
- }
-}
-
-let pairsByIndex = pairsByIndexRaw.filter(validArray);
+
+
+
+ 
+
+
+let pairsByIndex = pairsByIndexRaw.filter(indexes[0,1]);
 
 
 
diff --git a/1-exercises/E-array-map/exercise.js b/1-exercises/E-array-map/exercise.js
index 5a157279..07e1d23a 100644
--- a/1-exercises/E-array-map/exercise.js
+++ b/1-exercises/E-array-map/exercise.js
@@ -3,9 +3,19 @@
 
 let numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
 
-let numbersMultipliedByOneHundred; // complete this statement
+/*let numbersMultipliedByOneHundred = numbers.map(function multiply(number) {
+ // return number * 100;
+//});
+let numbersMultipliedByOneHundred = numbers.map(function(number){
+  return number * 100;
+}) 
+let numbersMultipliedByOneHundred = numbers.map(number =>{
 
+  return number *100;
+})*/
+let numbersMultipliedByOneHundred = numbers.map(number => number *100);
 console.log(numbersMultipliedByOneHundred);
+ 
 
 /* EXPECTED RESULT
 
diff --git a/1-exercises/F-array-forEach/exercise.js b/1-exercises/F-array-forEach/exercise.js
index 985068cc..7296a94e 100644
--- a/1-exercises/F-array-forEach/exercise.js
+++ b/1-exercises/F-array-forEach/exercise.js
@@ -8,6 +8,12 @@
 */
 
 let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
+let multiplesOfThree = arr.map(number * 3);
+let multiplesOfFive = arr.map(number * 5);
+let multiplesOfBoth = arr.map(number * 3 & number *5);
+
+multiplesOfThree.forEach(fizz);
+
 
 /* EXPECTED OUTPUT */
 
diff --git a/1-exercises/G-array-methods/exercise.js b/1-exercises/G-array-methods/exercise.js
index 4367ef6e..bc504f2a 100644
--- a/1-exercises/G-array-methods/exercise.js
+++ b/1-exercises/G-array-methods/exercise.js
@@ -4,7 +4,7 @@
 */
 
 let numbers = [3, 2, 1];
-let sortedNumbers; // complete this statement
+let sortedNumbers = numbers.sort(); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/1-exercises/G-array-methods/exercise2.js b/1-exercises/G-array-methods/exercise2.js
index 4c68c3a6..fb100649 100644
--- a/1-exercises/G-array-methods/exercise2.js
+++ b/1-exercises/G-array-methods/exercise2.js
@@ -7,7 +7,7 @@
 let mentors = ["Daniel", "Irina", "Rares"];
 let students = ["Rukmini", "Abdul", "Austine", "Swathi"];
 
-let everyone; // complete this statement
+let everyone = mentors.concat(students); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/1-exercises/H-array-methods-2/exercise.js b/1-exercises/H-array-methods-2/exercise.js
index 59c5daa7..331cc4aa 100644
--- a/1-exercises/H-array-methods-2/exercise.js
+++ b/1-exercises/H-array-methods-2/exercise.js
@@ -15,8 +15,8 @@ let everyone = [
   "Swathi",
 ];
 
-let firstFive; // complete this statement
-let lastFive; // complete this statement
+let firstFive = everyone.slice(0, 5); // complete this statement
+let lastFive = everyone.slice(2, 7); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/1-exercises/H-array-methods-2/exercise2.js b/1-exercises/H-array-methods-2/exercise2.js
index 14bb4318..bfe1f3b5 100644
--- a/1-exercises/H-array-methods-2/exercise2.js
+++ b/1-exercises/H-array-methods-2/exercise2.js
@@ -7,7 +7,12 @@
   Tip: use the string method .split() and the array method .join()
 */
 
-function capitalise(str) {}
+function capitalise(str) {
+ let character = str.split("");
+  character[0] = character[0].toUpperCase();
+  return character.join("");
+}
+
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/1-exercises/H-array-methods-2/exercise3.js b/1-exercises/H-array-methods-2/exercise3.js
index c8e079e4..7279417e 100644
--- a/1-exercises/H-array-methods-2/exercise3.js
+++ b/1-exercises/H-array-methods-2/exercise3.js
@@ -7,7 +7,7 @@
 let ukNations = ["Scotland", "Wales", "England", "Northern Ireland"];
 
 function isInUK(country) {
-  return; // complete this statement
+  return ukNations.includes(country); // complete this statement
 }
 
 /* 
diff --git a/1-exercises/I-string-replace/exercise.js b/1-exercises/I-string-replace/exercise.js
index 3f7104d7..0d2608ce 100644
--- a/1-exercises/I-string-replace/exercise.js
+++ b/1-exercises/I-string-replace/exercise.js
@@ -13,7 +13,7 @@
 let story =
   "I like dogs. One day I went to the park and I saw 10 dogs. It was a great day.";
 
-let result = story.replace("", "");
+let result = story.replace("dogs", "cats") .replace("day","night") .replace("10","10000") .replace("great","brilliant") .replace("day","night");
 
 /* EXPECTED OUTPUT */
 
diff --git a/1-exercises/J-string-substring/exercise.js b/1-exercises/J-string-substring/exercise.js
index 4624db68..85c9713f 100644
--- a/1-exercises/J-string-substring/exercise.js
+++ b/1-exercises/J-string-substring/exercise.js
@@ -6,7 +6,7 @@
 
 let statement = "I like programming and dogs";
 
-statement = statement.substring();
+statement = statement.substring(7,statement.length);
 
 console.log(statement);
 
diff --git a/1-exercises/J-string-substring/exercise2.js b/1-exercises/J-string-substring/exercise2.js
index a1d9bf62..e0e4e1f7 100644
--- a/1-exercises/J-string-substring/exercise2.js
+++ b/1-exercises/J-string-substring/exercise2.js
@@ -14,11 +14,11 @@ let names = [
   "Arron Graham",
 ];
 
-names[0] = names[0].substring();
-names[1] = names[1].substring();
-names[2] = names[2].substring();
-names[3] = names[3].substring();
-names[4] = names[4].substring();
+names[0] = names[0].substring(0,6);
+names[1] = names[1].substring(0,7);
+names[2] = names[2].substring(0,4);
+names[3] = names[3].substring(0,4);
+names[4] = names[4].substring(0,5);
 
 names.forEach((name) => {
   console.log(name);
diff --git a/2-mandatory/1-create-functions.js b/2-mandatory/1-create-functions.js
index 6df12961..ca77a3e0 100644
--- a/2-mandatory/1-create-functions.js
+++ b/2-mandatory/1-create-functions.js
@@ -3,15 +3,18 @@ Write a function that:
 - Accepts an array as a parameter.
 - Returns a new array containing the first five elements of the passed array.
 */
-function first5() {
-}
+function first5(numbers) {
+  let newArr =numbers.slice(0,5);
+  return newArr;
+  
 
 /*
 Write a function that:
 - Accepts an array as a parameter.
 - Returns a new array containing the same elements, except sorted.
 */
-function sortArray() {
+function sortArray(arr) {
+  return arr.slice().sort();
 }
 
 /*

From 1dc89101c6d1b4692c1131ccf5f3ec9e2efe2c3d Mon Sep 17 00:00:00 2001
From: Junitalama <113072416+Junitalama@users.noreply.github.com>
Date: Fri, 17 Mar 2023 02:07:41 +0000
Subject: [PATCH 3/5] done some mandatory

---
 1-exercises/J-string-substring/exercise3.js |  5 +----
 2-mandatory/1-create-functions.js           | 17 +++++++++++------
 2-mandatory/2-oxygen-levels.js              |  6 +++++-
 2-mandatory/4-space-colonies.js             |  5 ++++-
 2-mandatory/5-eligible-students.js          |  5 ++++-
 2-mandatory/6-journey-planner.js            |  5 +++--
 2-mandatory/7-lane-names.js                 |  7 ++++++-
 2-mandatory/8-password-validator.js         |  2 +-
 8 files changed, 35 insertions(+), 17 deletions(-)

diff --git a/1-exercises/J-string-substring/exercise3.js b/1-exercises/J-string-substring/exercise3.js
index 14f77417..d783c366 100644
--- a/1-exercises/J-string-substring/exercise3.js
+++ b/1-exercises/J-string-substring/exercise3.js
@@ -6,10 +6,7 @@
   HINT: You will need to use .substring() twice
 */
 
-let statement = "I do not like programming";
-
-let result = "";
-
+let statement = "I do not like programming"
 console.log(result);
 
 /* EXPECTED OUTPUT 
diff --git a/2-mandatory/1-create-functions.js b/2-mandatory/1-create-functions.js
index ca77a3e0..388a5fd8 100644
--- a/2-mandatory/1-create-functions.js
+++ b/2-mandatory/1-create-functions.js
@@ -3,9 +3,9 @@ Write a function that:
 - Accepts an array as a parameter.
 - Returns a new array containing the first five elements of the passed array.
 */
-function first5(numbers) {
-  let newArr =numbers.slice(0,5);
-  return newArr;
+function first5(arr) {
+  let newArr =arr.slice(0,5);
+  return newArr;}
   
 
 /*
@@ -27,7 +27,8 @@ Write a function that:
 - Removes any forward slashes (/) in the strings.
 - Makes the strings all lowercase.
 */
-function tidyUpString() {
+function tidyUpString(array) {
+  
 }
 
 /*
@@ -36,7 +37,10 @@ Write a function that:
 - Returns a new array containing the same elements, but without the element at the passed index.
 */
 
-function remove() {
+function remove(array,index) {
+  let arr =array.slice();
+  arr.splice(index,1);
+  return arr;
 }
 
 /*
@@ -47,7 +51,8 @@ Write a function that:
 - Numbers greater 100 must be replaced with 100.
 */
 
-function formatPercentage() {
+function formatPercentage(numbers) {
+  return
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/2-mandatory/2-oxygen-levels.js b/2-mandatory/2-oxygen-levels.js
index 5711c5e5..4c77d25b 100644
--- a/2-mandatory/2-oxygen-levels.js
+++ b/2-mandatory/2-oxygen-levels.js
@@ -11,7 +11,11 @@
     Some string methods that might help you here are .replace() and .substring().
 */
 
-function findSafeOxygenLevel() {}
+function findSafeOxygenLevel(oxygenLevels) {
+  
+  }
+
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/2-mandatory/4-space-colonies.js b/2-mandatory/4-space-colonies.js
index 30095213..83bbb1ca 100644
--- a/2-mandatory/4-space-colonies.js
+++ b/2-mandatory/4-space-colonies.js
@@ -15,7 +15,10 @@
   
 */
 
-function getSettlers() {}
+function getSettlers(families) {
+  let family = families.filter(word=>word.startsWith("A") && word.endsWith("family"))
+  return family;
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/2-mandatory/5-eligible-students.js b/2-mandatory/5-eligible-students.js
index f92478e0..3baefdd7 100644
--- a/2-mandatory/5-eligible-students.js
+++ b/2-mandatory/5-eligible-students.js
@@ -7,7 +7,10 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function getEligibleStudents() {}
+function getEligibleStudents(students, attendance) {
+  let studentName = students.filter(attendance=>attendance[1]>=8)
+  return studentName.map(names=>names[0]);
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/2-mandatory/6-journey-planner.js b/2-mandatory/6-journey-planner.js
index 25a14083..2b617db7 100644
--- a/2-mandatory/6-journey-planner.js
+++ b/2-mandatory/6-journey-planner.js
@@ -19,9 +19,10 @@
 
 function checkCodeIsThere(stringText) {
   let magicWord = "code";
+  
   //edit code below
-  if (stringText) {
-    return stringText;
+  if (stringText.includes(magicWord)) {
+    return stringText.indexOf(magicWord);
   } else {
     return "Not found";
   }
diff --git a/2-mandatory/7-lane-names.js b/2-mandatory/7-lane-names.js
index 40c31b68..1cac20bd 100644
--- a/2-mandatory/7-lane-names.js
+++ b/2-mandatory/7-lane-names.js
@@ -6,7 +6,12 @@
   HINT: string and array methods that could be helpful (indexOf, filter)
 */
 
-function getLanes() {}
+function getLanes(streets) {
+  return streets.filter(street => street.includes("Lane"))
+
+  }
+  
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/2-mandatory/8-password-validator.js b/2-mandatory/8-password-validator.js
index dc3e84d6..51020c12 100644
--- a/2-mandatory/8-password-validator.js
+++ b/2-mandatory/8-password-validator.js
@@ -27,7 +27,7 @@ function validatePasswords(passwords) {}
 
 // Returns true if string contains at least one uppercase letter.
 function containsUppercaseLetter(string) {
-  return /[A-Z]/.test(string);
+  return string.test(string);
 }
 
 // Returns true if string contains at least one lowercase letter.

From df0cf31e84dd5272fd899f74eb645c9caca1c038 Mon Sep 17 00:00:00 2001
From: Junitalama <113072416+Junitalama@users.noreply.github.com>
Date: Sat, 18 Mar 2023 16:16:47 +0000
Subject: [PATCH 4/5] Update exercise.js

---
 1-exercises/F-array-forEach/exercise.js | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/1-exercises/F-array-forEach/exercise.js b/1-exercises/F-array-forEach/exercise.js
index 7296a94e..512a16fc 100644
--- a/1-exercises/F-array-forEach/exercise.js
+++ b/1-exercises/F-array-forEach/exercise.js
@@ -8,11 +8,27 @@
 */
 
 let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
-let multiplesOfThree = arr.map(number * 3);
-let multiplesOfFive = arr.map(number * 5);
-let multiplesOfBoth = arr.map(number * 3 & number *5);
+arr.forEach(n => {
+  if(n % 3 === 0 && n % 5 === 0){
+  console.log("FizzBuzz");}
+    else if(n % 3 === 0){
+      console.log("Fizz");}
+   else if(n % 5 === 0){
+    console.log("Buzz");}
+    else{
+      console.log(n);
+    }
+  
+
+ 
+}
+);
+
+// let multiplesOfThree = arr.map(number * 3);
+// let multiplesOfFive = arr.map(number * 5);
+// let multiplesOfBoth = arr.map(number * 3 & number *5);
+
 
-multiplesOfThree.forEach(fizz);
 
 
 /* EXPECTED OUTPUT */

From 60fa80dac20d2d58948737d450b567e9e78308b7 Mon Sep 17 00:00:00 2001
From: Junitalama <113072416+Junitalama@users.noreply.github.com>
Date: Mon, 20 Mar 2023 00:49:17 +0000
Subject: [PATCH 5/5] mandatory

---
 1-exercises/A-array-find/exercise.js    |  8 ++++----
 1-exercises/C-array-every/exercise.js   |  6 +++---
 1-exercises/D-array-filter/exercise.js  |  3 ++-
 1-exercises/F-array-forEach/exercise.js |  3 ---
 2-mandatory/1-create-functions.js       | 21 ++++++++++++++++++---
 2-mandatory/2-oxygen-levels.js          | 10 ++++++++--
 2-mandatory/3-bush-berries.js           | 10 ++++++++--
 2-mandatory/6-journey-planner.js        | 18 +++++++++++++++---
 2-mandatory/8-password-validator.js     |  5 ++++-
 9 files changed, 62 insertions(+), 22 deletions(-)

diff --git a/1-exercises/A-array-find/exercise.js b/1-exercises/A-array-find/exercise.js
index 9e6277e3..d63fa35b 100644
--- a/1-exercises/A-array-find/exercise.js
+++ b/1-exercises/A-array-find/exercise.js
@@ -16,11 +16,11 @@ let names = [
   "Karim",
   "Ahmed",
 ];
- function longNameWithA(name) {
-  return name.length > 7;
-}
+ //function longNameWithA(name) {
+ // return name.length > 7;
+//}
 
-let longNameThatStartsWithA = names.find(longNameWithA);
+let longNameThatStartsWithA = names.find(name => name.length > 7);
 
 console.log(longNameThatStartsWithA);
 
diff --git a/1-exercises/C-array-every/exercise.js b/1-exercises/C-array-every/exercise.js
index 99ec31d3..2486b64f 100644
--- a/1-exercises/C-array-every/exercise.js
+++ b/1-exercises/C-array-every/exercise.js
@@ -5,7 +5,7 @@
 let students = ["Omar", "Austine", "Dany", "Swathi", "Lesley", "Rukmini"];
 let group = ["Austine", "Dany", "Swathi", "Daniel"];
 
-function containsStudent (groupWithStudents){
+/*function containsStudent (groupWithStudents){
   for (let name of groupWithStudents){
     if(group.includes(students)){
 return true;
@@ -15,9 +15,9 @@ return true;
 
   }
 
-}
+}*/
 
-let groupIsOnlyStudents = students.every(containsStudent);
+let groupIsOnlyStudents = students.every(name => group.includes(students)? true : false);
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");
diff --git a/1-exercises/D-array-filter/exercise.js b/1-exercises/D-array-filter/exercise.js
index 628ca2ce..0635b0d9 100644
--- a/1-exercises/D-array-filter/exercise.js
+++ b/1-exercises/D-array-filter/exercise.js
@@ -13,7 +13,8 @@ let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
  
 
 
-let pairsByIndex = pairsByIndexRaw.filter(indexes[0,1]);
+let pairsByIndex = pairsByIndexRaw.filter(item => Array.isArray(item) && item.length === 2);
+
 
 
 
diff --git a/1-exercises/F-array-forEach/exercise.js b/1-exercises/F-array-forEach/exercise.js
index 512a16fc..f834d5c6 100644
--- a/1-exercises/F-array-forEach/exercise.js
+++ b/1-exercises/F-array-forEach/exercise.js
@@ -24,9 +24,6 @@ arr.forEach(n => {
 }
 );
 
-// let multiplesOfThree = arr.map(number * 3);
-// let multiplesOfFive = arr.map(number * 5);
-// let multiplesOfBoth = arr.map(number * 3 & number *5);
 
 
 
diff --git a/2-mandatory/1-create-functions.js b/2-mandatory/1-create-functions.js
index 388a5fd8..2c05d6a1 100644
--- a/2-mandatory/1-create-functions.js
+++ b/2-mandatory/1-create-functions.js
@@ -27,8 +27,14 @@ Write a function that:
 - Removes any forward slashes (/) in the strings.
 - Makes the strings all lowercase.
 */
-function tidyUpString(array) {
-  
+function tidyUpString(arr) {
+  newArr = arr.map(function (string) {
+    string = string.trim();
+    string = string.replace("/", "");
+    string = string.toLowerCase();
+    return string;
+  });
+  return newArr;
 }
 
 /*
@@ -52,7 +58,16 @@ Write a function that:
 */
 
 function formatPercentage(numbers) {
-  return
+  let newnumbers = numbers.map(function (number) {
+    if (number > 100) {
+      number = "100%";
+    } else {
+      number = `${Math.round(number * 100) / 100}%`;
+    }
+
+    return number;
+  });
+  return newnumbers;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/2-mandatory/2-oxygen-levels.js b/2-mandatory/2-oxygen-levels.js
index 4c77d25b..724c134e 100644
--- a/2-mandatory/2-oxygen-levels.js
+++ b/2-mandatory/2-oxygen-levels.js
@@ -12,8 +12,14 @@
 */
 
 function findSafeOxygenLevel(oxygenLevels) {
-  
-  }
+let planets=oxygenLevels.filter(oxygenLevel =>oxygenLevel.includes("%"))
+let numberLevels= planets.map(number => parseFloat(number))
+let safePlanets=numberLevels.find(level => level> 19.5 && level<23.5)
+if(safePlanets!==undefined){
+  return `${safePlanets}%`;
+}
+
+}
 
 
 
diff --git a/2-mandatory/3-bush-berries.js b/2-mandatory/3-bush-berries.js
index b434a507..9cc5c352 100644
--- a/2-mandatory/3-bush-berries.js
+++ b/2-mandatory/3-bush-berries.js
@@ -21,8 +21,14 @@
   Let's first look at an example that will teach you how to use these methods.
 */
 
-function isBushSafe(berryArray) {
-  //Write your code here
+function isBushSafe(berryArray) { 
+  let safeBush = berryArray.every(berry => berry.includes("pink"))
+  if(safeBush){
+    return "Bush is safe to eat from"
+  }else{
+    return  "Toxic! Leave bush alone!"
+
+  }
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/2-mandatory/6-journey-planner.js b/2-mandatory/6-journey-planner.js
index 2b617db7..3bc8a116 100644
--- a/2-mandatory/6-journey-planner.js
+++ b/2-mandatory/6-journey-planner.js
@@ -65,7 +65,9 @@ function checkCodeIsThere(stringText) {
 
   Hint: Use the corresponding array method to split the array.
 */
-function getTransportModes() {}
+function getTransportModes(location) {
+  return location.slice(1)
+}
 
 /*
   Implement the function isAccessibleByTransportMode that
@@ -82,7 +84,12 @@ function getTransportModes() {}
 
   Hint: Use the corresponding array method to decide if an element is included in an array.
 */
-function isAccessibleByTransportMode() {}
+function isAccessibleByTransportMode(arr, str) {
+  if(arr.includes(str)){
+  return true;
+} else 
+return false;
+}
 
 /*
   Implement the function getLocationName that
@@ -93,7 +100,9 @@ function isAccessibleByTransportMode() {}
    - Returns the name of the location
       e.g: "Tower Bridge"
 */
-function getLocationName() {}
+function getLocationName(locations) {
+  return locations.at(0);
+}
 
 /*
  We arrived at the final method. it won't take long if you use the previously implemented functions wisely.
@@ -124,8 +133,11 @@ function getLocationName() {}
 */
 function journeyPlanner(locations, transportMode) {
   // Implement the function body
+let accessibleLocations= locations.filter( location=> location.includes(transportMode))
+return accessibleLocations.map(getLocationName)
 }
 
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const string1 = "I Love coding and perfect code makes me happy";
diff --git a/2-mandatory/8-password-validator.js b/2-mandatory/8-password-validator.js
index 51020c12..9515b647 100644
--- a/2-mandatory/8-password-validator.js
+++ b/2-mandatory/8-password-validator.js
@@ -23,7 +23,10 @@ PasswordValidationResult=  [false, false, false, false, true]
 
 */
 
-function validatePasswords(passwords) {}
+     
+
+
+
 
 // Returns true if string contains at least one uppercase letter.
 function containsUppercaseLetter(string) {