Js/ week3/ali haider

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+
+
+        {
+            "type": "pwa-node",
+            "request": "launch",
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}\\week-3\\1-exercises\\D-array-filter\\exercise.js"
+        }
+    ]
+}

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

@@ -4,10 +4,14 @@
 */
 
 // write your code here
+function findLongNameThatStartsWithA(name) {
+  return name.length > 7 && name[0] === "A";
+}
 
 var names = ["Rakesh", "Antonio", "Alexandra", "Andronicus", "Annam", "Mikey", "Anastasia", "Karim", "Ahmed"];
 
-var longNameThatStartsWithA = findLongNameThatStartsWithA(names);
+var longNameThatStartsWithA = names.find(findLongNameThatStartsWithA);
+
 
 console.log(longNameThatStartsWithA);
 

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

@@ -11,14 +11,21 @@ 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);
-
+function isNull (number){
+ return number === null;
+}
 var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
 var pairs = pairsByIndex.map(function(indexes) {
+  if ( pairsByIndex.some(isNull) === true){
+      process.exit(1);
+  }
+  else{
   var student = students[indexes[0]];
   var mentor = mentors[indexes[1]];
   return [student, mentor];
+  }
 });
 
 console.log(pairs);

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

@@ -4,9 +4,8 @@
 
 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");
 } else {

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

@@ -8,15 +8,21 @@
 
 var pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
 
-var pairsByIndex; // Complete this statement
+var pairsByIndex = pairsByIndexRaw.filter(function name(arr) {
+       for (const key in arr) {
+           if (typeof key !== null && key >=1 ) {
+            return arr[key];
+           }
+         }
+
+});  // Complete this statement
 
 var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
-var pairs = pairsByIndex.map(function(indexes) {
-  var student = students[indexes[0]];
-  var mentor = mentors[indexes[1]];
-  return [student, mentor];
-});
-
+ var pairs = pairsByIndex.map(function (indexes) {
+   var student = students[indexes[0]];
+   var mentor = mentors[indexes[1]];
+   return [student, mentor];
+ });
 console.log(pairs);

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

@@ -3,3 +3,8 @@
 
 var numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
 
+var numberMultiplied = numbers.map(function(number){
+    return number*100;
+});
+
+console.log(numberMultiplied);

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

@@ -8,7 +8,23 @@
 */
 
 var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
+
+var names = ["Daniel", "mozafar", "irina"];
+arr.forEach(function (name, index) {
+  if (name % 3 === 0 && name % 5 === 0) {
+    console.log(name + ": " + "FizzBuzz");
+  }
+  else if (name % 5 === 0) {
+    console.log(name + ": " + "Buzz");
+  }
+  else if (name % 3 === 0) {
+    console.log(name + ": " + "Fizz");
+  }
+  else  {
+    console.log(name + ": " + name);
+  }
 
+});
 /* 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

@@ -15,8 +15,8 @@ var everyone = [
   "Swathi"
 ];
 
-var firstFive; // complete this statement
-var lastFive; // complete this statement
+var firstFive = everyone.slice(0,5); // complete this statement
+var lastFive=everyone.slice(everyone.length-5,everyone.length); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -7,7 +7,11 @@
   Tip: use the string method .split() and the array method .join()
 */
 
-function capitalise(str) {}
+function capitalise(str) {
+  let newStr= str.slice(0,1).toUpperCase()+str.slice(1,str.length);
+
+  return newStr;
+}
 
 /* 
   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

@@ -9,10 +9,20 @@ 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) {
+   var safeLevel = arr.find(function (value){
+      if( parseFloat(value) > 19.5 && parseFloat(value) < 23.5){
+      return  true; 
+      }
+      else {
+          return false;
+      }
+   })
+ return safeLevel;
 
 }
 
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const oxygenLevels1 = ["24.2%", "11.3%", "19.9%", "23.1%", "29.3%", "20.2%"];

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

@@ -10,10 +10,26 @@
   Use the tests to confirm which message to return
 */
 
-function bushChecker() {
-
+function colorCheck(color){
+   if (color ==="pink"){
+     return true;
+   }
 }
 
+function bushChecker(arr) {
+   let safeBerries = arr.every(colorCheck);
+     if (safeBerries === true){
+       return "Bush is safe to eat from";
+     }
+     else {
+       return "Toxic! Leave bush alone!";
+     }
+   }
+
+
+
+
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 let bushBerryColours1 = ["pink", "pink", "pink", "neon", "pink", "transparent"]

week-3/2-mandatory/3-space-colonies.js

@@ -8,7 +8,10 @@
   NOTE: don't include any element that is not a "family".
 */
 
-function colonisers() {
+function colonisers(arr) {
+  return arr.filter(function(name){
+     return name.startsWith("A") && name.includes("family");
+  })
 
 }
 

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

@@ -7,8 +7,14 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function eligibleStudents() {
-
+function eligibleStudents(arr) {
+    let nameArr = [];
+    for(let i=0;i<arr.length;i++){
+        if(arr[i][1]>=8){
+          nameArr.push(arr[i][0]);
+        }
+    }
+return nameArr;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
@@ -22,6 +28,7 @@ const attendances = [
   ["Nina", 10]
 ]
 
+
 const util = require('util');
 
 function test(test_name, actual, expected) {

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

@@ -7,9 +7,18 @@
   NOTE: only the names should be returned, not the means of transport.
 */
 
-function journeyPlanner() {
+function journeyPlanner(arr,mode) {
+  let nameArr = [];
+  for (let i = 0; i < arr.length; i++) {
+    if (arr[i].includes(mode)) {
+      nameArr.push(arr[i][0]);
+    }
+  }
+  return nameArr;
 }
 
+
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const londonLocations = [

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

@@ -4,10 +4,18 @@
   Write a function that will return all street names which contain 'Lane' in their name.
 */
 
-function getLanes() {
-
+function getLanes(arr,name) {
+  let nameArr = [];
+  for (let i = 0; i < arr.length; i++) {
+    if (arr[i].includes("Lane")) {
+      nameArr.push(arr[i]);
+    }
+  }
+  return nameArr;
 }
 
+
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const streetNames = [

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

@@ -22,33 +22,64 @@ PasswordValidationResult=  [false, false, false, false, true]
 
 */
 
-function validatePasswords(passwords) {
+function validatePasswords(arr) {
 
+
+
+  var passw = /^(?=.*\d)(?=.*[!@#$%^&*])(?=.*[a-z])(?=.*[A-Z]).{5,}$/;
+  let nameArr = [];
+  for (let i = 0; i < arr.length - 1; i++) {
+    for (let j = i + 1; j <= arr.length; j++) {
+      if (arr[i] === arr[j]) {
+        arr[j] = nameArr.push(false);
+        nameArr.shift();
+      }
+    }
+  }
+
+  for (let i = 0; i < arr.length; i++) {
+
+    if (passw.test(arr[i])){
+       nameArr.push(true);
+
+    }
+
+    else  {
+       nameArr.push(false);
+    }
+
+  }
+  return nameArr;
+
+
 }
 
+
 /* ======= 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');
+const util = require("util");
 
 function test(test_name, actual, expected) {
-    let status;
-    if (util.isDeepStrictEqual(actual, expected)) {
-        status = "PASSED";
-    } else {
-        status = `FAILED: expected: ${util.inspect(expected)} but your function returned: ${util.inspect(actual)}`;
-    }
+  let status;
+  if (util.isDeepStrictEqual(actual, expected)) {
+    status = "PASSED";
+  } else {
+    status = `FAILED: expected: ${util.inspect(
+      expected
+    )} but your function returned: ${util.inspect(actual)}`;
+  }
 
-    console.log(`${test_name}: ${status}`);
+  console.log(`${test_name}: ${status}`);
 }
 
 test(
   "validatePasswords function works - case 1",
   validatePasswords(passwords1),
   [false, false, true, false, false]
- );
+);
 
 test(
   "validatePasswords function works - case 2",