LND10 | Adrian Ilovan | JS1-Coursework-Week4

2-mandatory/1-create-functions.js

@@ -3,15 +3,17 @@ 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(array) {
+  return array.slice(0, 5);
 }
 
 /*
 Write a function that:
 - Accepts an array as a parameter.
 - Returns a new array containing the same elements, except sorted.
 */
-function sortArray() {
+function sortArray(array) {
+  return array.slice().sort();
 }
 
 /*
@@ -24,7 +26,8 @@ Write a function that:
 - Removes any forward slashes (/) in the strings.
 - Makes the strings all lowercase.
 */
-function tidyUpString() {
+function tidyUpString(array) {
+  return array.map(str => str.trim().replace(/\//g, '').toLowerCase());
 }
 
 /*
@@ -33,7 +36,8 @@ 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) {
+  return array.slice(0, index).concat(array.slice(index + 1));
 }
 
 /*
@@ -44,7 +48,13 @@ Write a function that:
 - Numbers greater 100 must be replaced with 100.
 */
 
-function formatPercentage() {
+function formatPercentage(array) {
+  return array.map(num => {
+    if (num > 100) {
+      num = 100;
+    }
+    return `${(Math.round(num * 100) / 100).toFixed(2)}%`;
+  });
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

2-mandatory/2-oxygen-levels.js

@@ -11,7 +11,14 @@
     Some string methods that might help you here are .replace() and .substring().
 */
 
-function findSafeOxygenLevel() {}
+function findSafeOxygenLevel(planets) {
+  for (let i = 0; i < planets.length; i++) {
+    let oxygenLevel = parseFloat(planets[i].replace('%', ''));
+    if (!isNaN(oxygenLevel) && oxygenLevel >= 19.5 && oxygenLevel <= 23.5) {
+      return planets[i];
+    }
+  }
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

2-mandatory/3-bush-berries.js

@@ -22,7 +22,11 @@
 */
 
 function isBushSafe(berryArray) {
-  //Write your code here
+  if (berryArray.every((berry) => berry === "pink")) {
+    return "Bush is safe to eat from";
+  } else {
+    return "Toxic! Leave bush alone!";
+  }
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

2-mandatory/4-space-colonies.js

@@ -15,7 +15,11 @@
 
 */
 
-function getSettlers() {}
+function getSettlers(settledFamily) {
+  //We will filter the array to only include strings that start with "A" and end with "family"
+  const settlers = settledFamily.filter(str => str.startsWith('A') && str.endsWith('family'));
+  return settlers;
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

2-mandatory/5-eligible-students.js

@@ -7,7 +7,15 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function getEligibleStudents() {}
+function getEligibleStudents(attendance) {
+  const eligibleStudentNames = [];
+  for (let i = 0; i <attendance.length; i++) {
+    if (attendance[i][1] >= 8) {
+      eligibleStudentNames.push(attendance[i][0]);
+    }
+  } 
+  return eligibleStudentNames;
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

2-mandatory/6-journey-planner.js

@@ -20,8 +20,8 @@
 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";
   }
@@ -64,7 +64,9 @@ function checkCodeIsThere(stringText) {
 
   Hint: Use the corresponding array method to split the array.
 */
-function getTransportModes() {}
+function getTransportModes(locationArray) {
+  return locationArray.slice(1);
+}
 
 /*
   Implement the function isAccessibleByTransportMode that
@@ -81,7 +83,9 @@ function getTransportModes() {}
 
   Hint: Use the corresponding array method to decide if an element is included in an array.
 */
-function isAccessibleByTransportMode() {}
+function isAccessibleByTransportMode(transportModes, mode) {
+  return transportModes.includes(mode);
+}
 
 /*
   Implement the function getLocationName that
@@ -92,7 +96,9 @@ function isAccessibleByTransportMode() {}
    - Returns the name of the location
       e.g: "Tower Bridge"
 */
-function getLocationName() {}
+function getLocationName(locationArray) {
+  return locationArray[0];
+}
 
 /*
  We arrived at the final method. it won't take long if you use the previously implemented functions wisely.
@@ -123,6 +129,9 @@ function getLocationName() {}
 */
 function journeyPlanner(locations, transportMode) {
   // Implement the function body
+  return locations
+    .filter(location => isAccessibleByTransportMode(getTransportModes(location), transportMode))
+    .map(location => getLocationName(location));
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

2-mandatory/7-lane-names.js

@@ -6,7 +6,10 @@
   HINT: string and array methods that could be helpful (indexOf, filter)
 */
 
-function getLanes() {}
+function getLanes(streetNames) {
+   return streetNames.filter(name => name.includes("Lane"));
+
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

2-mandatory/8-password-validator.js

@@ -23,7 +23,31 @@ PasswordValidationResult=  [false, false, false, false, true]
 
 */
 
-function validatePasswords(passwords) {}
+function validatePasswords(passwords) {
+  const seenPasswords = new Set();
+  return passwords.map((password) => {
+    if (password.length < 5) {
+      return false;
+    }
+    if (!containsUppercaseLetter(password)) {
+      return false;
+    }
+    if (!containsLowercaseLetter(password)) {
+      return false;
+    }
+    if (!containsNumber(password)) {
+      return false;
+    }
+    if (!containsSymbol(password)) {
+      return false;
+    }
+    if (seenPasswords.has(password)) {
+      return false;
+    }
+    seenPasswords.add(password);
+    return true;
+  });
+}
 
 // Returns true if string contains at least one uppercase letter.
 function containsUppercaseLetter(string) {