Glasgow6-Haroun-Alarabi- Javcript-Core-1-Coursework-Week4

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

@@ -16,9 +16,11 @@ let names = [
   "Karim",
   "Ahmed",
 ];
+function findLongNameThatStartsWithA(name){
+  return name.length >7 ;
+}
 
-let longNameThatStartsWithA = findLongNameThatStartsWithA(names);
-
+let longNameThatStartsWithA = names.find(findLongNameThatStartsWithA);
 console.log(longNameThatStartsWithA);
 
 /* EXPECTED OUTPUT */

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

@@ -7,18 +7,28 @@
 */
 
 let pairsByIndex = [[0, 3], [1, 2], [2, 1], null, [3, 0]];
+function checkNull (){
+  console.error('pairsByIndex have null value');
+  return process.exit(1);
+}
+let containNull = pairsByIndex.some(checkNull)
+console.log(containNull);
 
+
+
+
+  // }
 // 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);
 
 let students = ["Islam", "Lesley", "Harun", "Rukmini"];
 let mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
-
 let pairs = pairsByIndex.map(function (indexes) {
   let student = students[indexes[0]];
   let mentor = mentors[indexes[1]];
   return [student, mentor];
 });
 
 console.log(pairs);
+

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"];
 
-let groupIsOnlyStudents; // complete this statement
+let groupIsOnlyStudents = group.every(checkIfAllStudent) ; // complete this statement
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");
@@ -16,3 +16,7 @@ if (groupIsOnlyStudents) {
 /* EXPECTED RESULT */
 
 // The group does not contain only students
+function checkIfAllStudent(name) {
+  return students.includes(name) ;
+}
+

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

@@ -8,9 +8,11 @@
 
 let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
 
-let pairsByIndex; // Complete this statement
+let pairsByIndex = pairsByIndexRaw.filter(function isPairs(name){
+  return Array.isArray(name) && name.length === 2;
+}); // Complete this statement
 
-let students = ["Islam", "Lesley", "Harun", "Rukmini"];
+let students = ["Islam", "Lesley", "Haroun", "Rukmini"];
 let mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
 let pairs = pairsByIndex.map(function (indexes) {
@@ -21,6 +23,10 @@ let pairs = pairsByIndex.map(function (indexes) {
 
 console.log(pairs);
 
+
+
+
+
 /* EXPECTED RESULT
 
   [ [ 'Islam', 'Luke' ], [ 'Lesley', 'Mozafar' ], [ 'Harun', 'Irina' ] ]

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

@@ -2,10 +2,13 @@
 // Write multiple solutions using different syntax (as shown in the README)
 
 let numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
+let numbersMultipliedByOneHundred = numbers .map(function multiple(number) {
+  return number * 100;
+});
+console.log(numbersMultipliedByOneHundred);
+
 
-let numbersMultipliedByOneHundred; // complete this statement
 
-console.log(numbersMultipliedByOneHundred);
 
 /* EXPECTED RESULT
 

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

@@ -1,13 +1,27 @@
-/* 
+/*
   Using .forEach() print the numbers 1 to 15, with some exceptions:
-  - For multiples of 3 print “Fizz” instead of the number 
-  - For the multiples of 5 print “Buzz”. 
+  - For multiples of 3 print “Fizz” instead of the number
+  - For the multiples of 5 print “Buzz”.
   - For numbers which are multiples of both 3 and 5 print “FizzBuzz”
 
   An array with numbers 1-15 has been provided.
 */
 
 let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
+arr.forEach(num => {
+  if (num % 3 === 0 && num % 5 === 0) {
+    console.log("FizzBuzz");
+  } else if (num % 3 === 0) {
+    console.log("Fizz");
+  } else if (num % 5 === 0) {
+    console.log("Buzz");
+  } else {
+    console.log(num);
+  }
+});
+
+
+
 
 /* EXPECTED OUTPUT */
 

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

@@ -4,15 +4,15 @@
 */
 
 let numbers = [3, 2, 1];
-let sortedNumbers; // complete this statement
+let sortedNumbers = numbers.sort();
 
-/* 
+/*
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 
 console.log(sortedNumbers);
 
-/* 
+/*
   EXPECTED RESULT
   ---------------
   [1, 2, 3]

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

@@ -7,15 +7,15 @@
 let mentors = ["Daniel", "Irina", "Rares"];
 let students = ["Rukmini", "Abdul", "Austine", "Swathi"];
 
-let everyone; // complete this statement
+let everyone = mentors.concat(students);
 
-/* 
+/*
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 
 console.log(everyone);
 
-/* 
+/*
   EXPECTED RESULT
   ---------------
   ["Daniel", "Irina", "Rares", "Rukmini", "Abdul", "Austine", "Swathi"]

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

@@ -15,17 +15,17 @@ let everyone = [
   "Swathi",
 ];
 
-let firstFive; // complete this statement
-let lastFive; // complete this statement
+let firstFive = everyone.slice(0, 5);
+let lastFive = everyone.slice(2);
 
-/* 
+/*
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 
 console.log(firstFive);
 console.log(lastFive);
 
-/* 
+/*
   EXPECTED RESULT
   ---------------
   ["Daniel", "Irina", "Rares", "Rukmini", "Abdul"]

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

@@ -1,23 +1,27 @@
 /*
   Array methods - .join()
   -------------------------
-  Complete the capitalise function 
+  Complete the capitalise function
   It should return a string with the first letter in uppercase
   For example, capitailise("hello") should return "Hello"
   Tip: use the string method .split() and the array method .join()
 */
 
-function capitalise(str) {}
+function capitalise(str) {
+let str1 = str.split('');
+str1[0] = str1[0].toUpperCase() + str1[0].slice(1);
+return str1.join('');
+}
 
-/* 
+/*
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 let name = "daniel";
 
 console.log(capitalise(name));
 console.log(capitalise("hello"));
 
-/* 
+/*
   EXPECTED RESULT
   ---------------
   Daniel

1-exercises/H-array-methods-2/exercise3.js

@@ -7,17 +7,17 @@
 let ukNations = ["Scotland", "Wales", "England", "Northern Ireland"];
 
 function isInUK(country) {
-  return; // complete this statement
+  return ukNations.includes(country);
 }
 
-/* 
+/*
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 console.log(isInUK("France"));
 console.log(isInUK("Republic of Ireland"));
 console.log(isInUK("England"));
 
-/* 
+/*
   EXPECTED RESULT
   ---------------
   false

1-exercises/I-string-replace/exercise.js

@@ -1,19 +1,22 @@
-/* 
+/*
   You are given a sentence contains a story.
 
-  Current it says 
+  Current it says
 
   "I like dogs. One day I went to the park and I saw 10 dogs. It was a great day."
 
-  Change the story using .replace() so that it says 
+  Change the story using .replace() so that it says
 
   "I like cats. One night I went to the park and I saw 100000 cats. It was a brilliant night."
 */
 
 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(
+  "I like dogs. One day I went to the park and I saw 10 dogs. It was a great day.",
+  "I like cats. One night I went to the park and I saw 100000 cats. It was a brilliant night."
+);
 
 /* EXPECTED OUTPUT */
 

1-exercises/J-string-substring/exercise.js

@@ -1,17 +1,17 @@
-/* 
+/*
   You are given an statement
 
-  You should remove the word "and dogs" by using substring 
+  You should remove the word "and dogs" by using substring
 */
 
 let statement = "I like programming and dogs";
 
-statement = statement.substring();
+statement = statement.substring(0,19);
 
 console.log(statement);
 
-/* EXPECTED OUTPUT 
+/* EXPECTED OUTPUT
 
   "I like programming"
-  
+
 */

1-exercises/J-string-substring/exercise2.js

@@ -1,4 +1,4 @@
-/* 
+/*
   You are given an array with a list of names.
 
   You should log only the peoples first names.
@@ -20,16 +20,18 @@ names[2] = names[2].substring();
 names[3] = names[3].substring();
 names[4] = names[4].substring();
 
+
 names.forEach((name) => {
   console.log(name);
+
 });
 
-/* EXPECTED OUTPUT 
+/* EXPECTED OUTPUT
 
   "Tamzin"
   "Jessica"
   "Tony"
   "Shae"
   "Arron"
-  
+
 */

1-exercises/J-string-substring/exercise3.js

@@ -1,4 +1,4 @@
-/* 
+/*
   You are given an statement
 
   You should remove the word "not" by using .substring() and log the result.
@@ -8,12 +8,12 @@
 
 let statement = "I do not like programming";
 
-let result = "";
+let result = statement.substring(0, 5) + statement.substring(8);
 
 console.log(result);
 
-/* EXPECTED OUTPUT 
+/* EXPECTED OUTPUT
 
   "I do like programming"
-  
+
 */