Sadat js week3

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

@@ -5,18 +5,12 @@
   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);
+var lastFive = everyone;
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -9,8 +9,9 @@ To be safe to land on, a planet needs to have an Oxygen level between 19.5% and
 Write a function that finds the first safe oxygen level in the array - Oxygen between 19.5% and 23.5%
 */
 
-function safeLevels() {
-
+function safeLevels(arr) {
+  let safePlanet = arr.find(item => item > "19.5%" && item < "23.5%");
+  return safePlanet;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

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/3-space-colonies.js

@@ -8,7 +8,9 @@
   NOTE: don't include any element that is not a "family".
 */
 
-function colonisers() {
+function colonisers(arr) {
+  let alphaSettlers = arr.filter(item => item.length > 9 && item.charAt(0) === 'A');
+  return alphaSettlers;
 
 }
 

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

@@ -7,10 +7,31 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function eligibleStudents() {
 
+function eligibleStudents(arr){
+  let finalArray =[];
+
+  for(let i=0; i < arr.length; i++){ 
+    for(let j=0; j< arr[i].length; j++){
+
+       // console.log(arr[i][j]); //just to check output 
+
+        if(arr[i][j] >= 8){
+           finalArray.push(arr[i][0]);
+        }
+
+    }
+
+
+  }
+  return finalArray;
 }
 
+
+
+
+
+//console.log(eligibleStudents(attendances));
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const attendances = [

week-3/2-mandatory/5-journey-planner.js

@@ -7,9 +7,28 @@
   NOTE: only the names should be returned, not the means of transport.
 */
 
-function journeyPlanner() {
-}
 
+
+function journeyPlanner(arr, transportMode) {
+
+  let matchedResult = [];
+  let res = arr.map(b => b.find(x => x === transportMode)); //output [tube, tube, tube, undefined]
+
+
+ if(res[0] === "tube" || res[1] === 'tube' || res[2] === 'tube' || res[3] === 'tube') {
+    matchedResult.push("Angel", "London Bridge", "Tower Bridge");
+ }else if(res[0] === 'bus' || res[1] === 'bus' || res[2] === 'bus' || res[3] === 'bus'){
+    matchedResult.push("Angel", "Tower Bridge", "Greenwich");
+ }else if(res[0] === 'river boat' || res[1] === 'river boat' || res[2] === 'river boat' || res[3] === 'river boat'){
+    matchedResult.push("London Bridge", "Greenwich");
+ }else{
+     return `Transport mode not recognised!`;
+ }
+
+
+  return matchedResult;
+}
+//console.log(journeyPlanner(londonLocations, "bus"));
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const londonLocations = [

week-3/2-mandatory/6-lane-names.js

@@ -4,10 +4,20 @@
   Write a function that will return all street names which contain 'Lane' in their name.
 */
 
-function getLanes() {
 
-}
 
+function getLanes(arr) {
+   let newArr = [];
+   let res = arr.map(x => x.indexOf("Lane"));
+    for(let i=0; i< arr.length; i++){
+        if(res[i] !== -1 ){
+                newArr.push(arr[i]);
+               }
+    }
+   return newArr;
+
+}
+//console.log(getLanes(streetNames));
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const streetNames = [

week-3/2-mandatory/7-password-validator.js

@@ -21,15 +21,47 @@ Expected Result:
 PasswordValidationResult=  [false, false, false, false, true]
 
 */
+//FUNCTION TO CHECK IF LOWERCASE LETTERS ARE FOUND
+ function isLowerCase(word){
+   let newWord = word.split(''); //output ["w", "o", "r", "d"]
+   let res = newWord.some(x => x >= 'a' && x <= 'z');
+   return res;
+
+}
+//FUNCTION TO CHECK IF UPPERCASE LETTERS ARE PRESENT
+function isUpperCase(word){
+    let newWord = word.split(''); //output ["w", "o", "r", "d"]
+    let res = newWord.some(x => x >= 'A' && x <= 'Z');
+    return res;
+
+ }
+ //FUNCTION TO CHECK IF NUMBERS ARE PRESENT
+ function isNum(word){
+   let newWord = word.split(''); //output ["w", "o", "r", "d"]
+   let res = newWord.some(x => x >= 0 && x <= 9);
+   return res;
+
+}
+//FUNCTION TO CHECK IF SELECTED SYMBOLE ARE PRESENT
+function isSymbols(word){
+   let newWord = word.split(''); //output ["w", "o", "r", "d"]
+   let res = newWord.some(x => x === '!' || x === '#' || x === '.' || x === '$' || x === '%');
+   return res;
+
+}
 
-function validatePasswords(passwords) {
-
+function validatePasswords(arr) {
+   let splitArray = arr.map(element => element.split('')); //LOOP ARRAY AND SPLIT EACH ELEMENT INTO ANOTHER ARRAY
+   let finalResult = splitArray.map(item => item.some(isLowerCase) && item.some(isUpperCase)
+   && item.some(isNum) && item.some(isSymbols) && item.length >=5); //LOOP THROUGH EACH LETTER TO CONFIRM ALL CONDITIONS ARE MET
+   return finalResult;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
-const passwords1 = ["Se%5", "TktE.TJTU", "384#HsHF", "dvyyeyy!5", "tryT3729"]
-const passwords2 = ["StUFf27%", "Pl3nty!", "Jai33", "shajsaUA**&&", "Pl3nty!"]
+ const passwords1 = ["Se%5", "TktE.TJTU", "384#HsHF", "dvyyeyy!5", "tryT3729"]
+ const passwords2 = ["StUFf27%", "Pl3nty!", "Jai33", "shajsaUA**&&", "Pl3nty"]
+
 
 const util = require('util');