Deniz week 3 Mandatory and Exercises

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

@@ -5,11 +5,20 @@
 
 // write your code here
 
-var names = ["Rakesh", "Antonio", "Alexandra", "Andronicus", "Annam", "Mikey", "Anastasia", "Karim", "Ahmed"];
+let names = ["Rakesh", "Antonio", "Alexandra", "Andronicus", "Annam", "Mikey", "Anastasia", "Karim", "Ahmed"];
+
+function findTheNames (arr){
+
+  let answer =  arr.length > 7 && arr.charAt(0) === "A";
+  return answer;
+} 
+
+let longNameThatStartsWithA = names.find (findTheNames);
+
+// let longNameThatStartsWithA=names.find(findLongNameThatStartsWithA);
 
-var longNameThatStartsWithA = findLongNameThatStartsWithA(names);
 
 console.log(longNameThatStartsWithA);
 
-/* EXPECTED OUTPUT */
-// "Alexandra"
+// /* EXPECTED OUTPUT */
+// // "Alexandra"

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

@@ -7,18 +7,21 @@
 */
 
 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);
-
 var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
+function check (index){
+    return index==="null";
+} 
+var exitProgram= pairsByIndex.some(check);
+process.exit(1);
+
 var pairs = pairsByIndex.map(function(indexes) {
   var student = students[indexes[0]];
   var mentor = mentors[indexes[1]];
   return [student, mentor];
 });
-
-console.log(pairs);
+console.log(pairs);

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

@@ -5,7 +5,13 @@
 var students = ["Omar", "Austine", "Dany", "Swathi", "Lesley", "Rukmini"];
 var group = ["Austine", "Dany", "Swathi", "Daniel"];
 
-var groupIsOnlyStudents; // complete this statement
+function answer(arr){
+  return (students.includes(arr))
+
+}
+
+var groupIsOnlyStudents = group.every(answer); // complete this statement
+
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");

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

@@ -8,8 +8,12 @@
 
 var pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
 
-var pairsByIndex; // Complete this statement
+var pairsByIndex=  pairsByIndexRaw.filter(answer)
+function answer (element){
+  return Array.isArray(element) && element.length===2;
 
+}
+console.log(pairsByIndex);
 var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 

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

@@ -2,4 +2,9 @@
 // Write multiple solutions using different syntax (as shown in the README)
 
 var numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
+var hundredTimes= numbers.map(hundreds);
 
+function hundreds (number){
+ return number*100;
+}
+console.log(hundredTimes);

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

@@ -11,6 +11,25 @@ var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
 
 /* EXPECTED OUTPUT */
 
+arr.forEach(fizz)
+function fizz(number){
+  if (number %3 ==0 && number %5 ==0 ){
+    console.log("fizzBuzz");
+
+  }
+  else if (number %3 ==0){
+    console.log("fizz");
+  }
+  else if (number %5 ==0){
+    console.log("buzz");
+  }
+  else {
+    console.log(number);
+  }
+
+
+}
+
 /*
 1
 2

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

@@ -4,7 +4,11 @@
 */
 
 var numbers = [3, 2, 1];
-var sortedNumbers; // complete this statement
+var sortedNumbers= numbers.sort(answer);
+function answer(num1,num2){
+ return num1-num2;
+}
+
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -7,7 +7,8 @@
 var mentors = ["Daniel", "Irina", "Rares"];
 var students = ["Rukmini", "Abdul", "Austine", "Swathi"];
 
-var everyone; // complete this statement
+var everyone= mentors.concat(students);
+
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -15,14 +15,16 @@ var everyone = [
   "Swathi"
 ];
 
-var firstFive; // complete this statement
-var lastFive; // complete this statement
-
+var firstFive= everyone.splice(0,5);
+var everyone= firstFive.concat(everyone);
+var lastFive= everyone.splice(0,2);
+var lastFive= everyone;
 /* 
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 
 console.log(firstFive);
+console.log(everyone);
 console.log(lastFive);
 
 /* 

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

@@ -8,10 +8,18 @@ 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 safeoxygen = arr.find(x => x>"19.5%" && x <"23.5%");
+  return safeoxygen;
 }
+// function safeLevels(oxygenLevel) {
+//  let safeLevels=oxygenLevel.find(oxygenLevel=> {
+//  if (oxygenLevel> "19.5%" && oxygenLevel < "23.5%"){
+//    return oxygenLevel;
+//  }
+//  })
+//  return safeLevels;
+// }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

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

@@ -10,8 +10,15 @@
   Use the tests to confirm which message to return
 */
 
-function bushChecker() {
-
+function bushChecker(arr) {
+let safeberry= arr.every(x => x==="pink");
+if (safeberry === 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 safefamily =arr.filter(x=> x.length > 9 && x[0] ==="A");
+return safefamily;
 
 }
 

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

@@ -7,10 +7,37 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function eligibleStudents() {
 
+function eligibleStudents(arr) {
+
+  let filteredstudent = arr.filter(checkStudentAttendens);
+  function checkStudentAttendens(nameAndAttandens){
+    return nameAndAttandens[1] >=8;
+
+  }
+  console.log(filteredstudent);
+  let getStudentNames= filteredstudent.map(bringName);
+  function bringName(nameAndAttandens){
+    return nameAndAttandens[0];
+
+  }
+  console.log(getStudentNames)
+  return getStudentNames;
 }
 
+
+// function eligibleStudents(arr) {
+//   let newArr = [];
+//   for (let i = 0; i < arr.length; i++) {
+//     for (let j = 0; j < arr[i].length; j++) {
+//       if (arr[i][j] >= 8) {
+//         newArr.push(arr[i][0]);
+//       }
+//     }
+//   } return newArr;
+
+// }
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const attendances = [

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

@@ -7,9 +7,21 @@
   NOTE: only the names should be returned, not the means of transport.
 */
 
+<<<<<<< Updated upstream
 function journeyPlanner() {
+=======
+function journeyPlanner(locationsArr, transport) {
+  let newArr = [];
+  for(let i = 0; i < locationsArr.length; i++) {
+    if (locationsArr[i].includes(transport)) {
+      newArr.push(locationsArr[i][0]);
+    }
+  }
+  return newArr;
+>>>>>>> Stashed changes
 }
 
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const londonLocations = [

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

@@ -4,8 +4,16 @@
   Write a function that will return all street names which contain 'Lane' in their name.
 */
 
-function getLanes() {
-
+function getLanes(arr) {
+
+    let street= []; // create blank array
+    let result= arr.map(x => x.indexOf("Lane")); // indexOf 
+    for (let i = 0; i < arr.length; i++){ // create loop for checking every of them
+        if (result[i] !== -1 ) {
+        street.push(arr[i]);
+        }
+    }
+    return street;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

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

@@ -22,14 +22,39 @@ PasswordValidationResult=  [false, false, false, false, true]
 
 */
 
-function validatePasswords(passwords) {
-
+//  const passwords2 = ["tf1%", "Pl7nty!", "Ja4i", "s4hajsaUA**&&", "pl3nty!"];
+function validatePasswords(arr) {
+    let bigArrayOfChar = arr.map(element => element.split('')); //map returns a new array
+    let result = bigArrayOfChar.map(index => index.some(isNum) && index.some(isUpperCase)
+     && index.some(isLowerCase) && index.some(isSymbols) && index.length >=5);
+    return result;
+}
+function isNum(word) {
+    let newWord = word.split('');
+    let checkLetter = newWord.some(element => element >= 0 && element <= 9); //some returns boolean
+    return checkLetter;
+}
+function isUpperCase(word) {
+    let newWord = word.split('');
+    let checkUpperCase = newWord.some(element => element >= 'A' && element <= 'Z');
+    return checkUpperCase;
+}
+function isLowerCase(word) {
+    let newWord = word.split('');
+    let checkLowerCase = newWord.some(element => element >= 'a' && element <= 'z');
+    return checkLowerCase;
+}
+function isSymbols(word){
+  let newWord = word.split(''); //output ["w", "o", "r", "d"]
+  let result = newWord.some(element => element === '!' || element === '#' || element === '.' || element === '$' || element === '%');
+  return result;
 }
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const passwords1 = ["Se%5", "TktE.TJTU", "384#HsHF", "dvyyeyy!5", "tryT3729"]
-const passwords2 = ["StUFf27%", "Pl3nty!", "Jai33", "shajsaUA**&&", "Pl3nty!"]
+const passwords2 = ["StUFf27%", "Pl3nty!", "Jai33", "shajsaUA**&&", "Pl3nty"]
 
 const util = require('util');