London10-StellaDelMar_RodriguezFernandez-JavaScript-Core-1-Coursework-Week4

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

@@ -5,6 +5,7 @@
 
 // write your code here
 
+
 let names = [
   "Rakesh",
   "Antonio",
@@ -17,6 +18,14 @@ let names = [
   "Ahmed",
 ];
 
+function isLongNameAndStartsWithA(name) {
+  return name.length > 7 && name[0] == "A";
+}
+function findLongNameThatStartsWithA(names){
+  return names.find(isLongNameAndStartsWithA);
+
+}
+
 let longNameThatStartsWithA = findLongNameThatStartsWithA(names);
 
 console.log(longNameThatStartsWithA);

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

@@ -8,10 +8,19 @@
 
 let pairsByIndex = [[0, 3], [1, 2], [2, 1], null, [3, 0]];
 
+//***************************************************
+
+function isNullvalue(!number) {
+  return !number;
+}
+
+//***************************************************
+
 // 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"];
 

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

@@ -5,7 +5,11 @@
 let students = ["Omar", "Austine", "Dany", "Swathi", "Lesley", "Rukmini"];
 let group = ["Austine", "Dany", "Swathi", "Daniel"];
 
-let groupIsOnlyStudents; // complete this statement
+let groupIsOnlyStudents = group.every(any);{
+return students.includes(any);
+}
+console.log(groupIsOnlyStudents);
+
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");

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

@@ -8,7 +8,10 @@
 
 let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
 
-let pairsByIndex; // Complete this statement
+let pairsByIndex = pairsByIndexRaw.filter( item => item.length === 2);
+
+
+// Complete this statement
 
 let students = ["Islam", "Lesley", "Harun", "Rukmini"];
 let mentors = ["Daniel", "Irina", "Mozafar", "Luke"];

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

@@ -3,7 +3,7 @@
 
 let numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
 
-let numbersMultipliedByOneHundred; // complete this statement
+let numbersMultipliedByOneHundred = numbers.map(number => number * 100); // complete this statement
 
 console.log(numbersMultipliedByOneHundred);
 

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

@@ -4,7 +4,7 @@
 */
 
 let numbers = [3, 2, 1];
-let sortedNumbers; // complete this statement
+let sortedNumbers = numbers.sort(); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -7,8 +7,7 @@
 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
   --------------------------- */

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

@@ -15,8 +15,8 @@ let everyone = [
   "Swathi",
 ];
 
-let firstFive; // complete this statement
-let lastFive; // complete this statement
+let firstFive = everyone.slice(0, 5);// complete this statement
+let lastFive = everyone.slice(2, 7);// complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -6,8 +6,16 @@
   For example, capitailise("hello") should return "Hello"
   Tip: use the string method .split() and the array method .join()
 */
+//******
+//originanl: 
+//function capitalise(str) {}
+//*******
 
-function capitalise(str) {}
+function capitalise(str){
+let uppercase = str.split("");
+uppercase[0] = uppercase[0].toUpperCase();
+return uppercase.join("");
+}
 
 /* 
   DO NOT EDIT BELOW THIS LINE

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

@@ -7,7 +7,7 @@
 let ukNations = ["Scotland", "Wales", "England", "Northern Ireland"];
 
 function isInUK(country) {
-  return; // complete this statement
+  return ukNations.includes(country); // complete this statement
 }
 
 /* 

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

@@ -13,7 +13,8 @@
 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("dogs");
+console.log(result);
 
 /* EXPECTED OUTPUT */
 

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

@@ -6,9 +6,9 @@
 
 let statement = "I like programming and dogs";
 
-statement = statement.substring();
+let newStatement = statement.substring(0, 19);
 
-console.log(statement);
+console.log(newStatement);
 
 /* EXPECTED OUTPUT 
 

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

@@ -3,7 +3,9 @@
 
   You should log only the peoples first names.
 
-  For example, if the name is "John Smith" you should return "John"
+  For example, if the name is "John Smith" you 
+
+  should return "John"
 */
 
 let names = [
@@ -14,11 +16,11 @@ let names = [
   "Arron Graham",
 ];
 
-names[0] = names[0].substring();
-names[1] = names[1].substring();
-names[2] = names[2].substring();
-names[3] = names[3].substring();
-names[4] = names[4].substring();
+names[0] = names[0].substring(0, 6);
+names[1] = names[1].substring(0, 6);
+names[2] = names[2].substring(0, 5);
+names[3] = names[3].substring(0, 5);
+names[4] = names[4].substring(0, 5);
 
 names.forEach((name) => {
   console.log(name);

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

@@ -8,7 +8,7 @@
 
 let statement = "I do not like programming";
 
-let result = "";
+let result = statement.substring(0, 4)+statement.substring(8, statement.length);
 
 console.log(result);