CodeYourFuture · OlushoreOdude · Nov 30, 2022 · Nov 30, 2022 · Nov 30, 2022 · Nov 30, 2022
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,4 @@
 /node_modules/
 /package-lock.json
+/3-extra/week7js1-3
+/3-extra/week8js1-L4
diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
@@ -12,25 +12,27 @@
 // Example 1
 let a;
 console.log(a);
-
+// no value has been asigned to a
 
 // Example 2
 function sayHello() {
-    let message = "Hello";
+  let message = "Hello";
 }
 
 let hello = sayHello();
 console.log(hello);
-
+// the function is not being invoked
+//their is also no return val;ue
 
 // Example 3
 function sayHelloToUser(user) {
-    console.log(`Hello ${user}`);
+  console.log(`Hello ${user}`);
 }
 
 sayHelloToUser();
-
+// no parameter is given but it is required
 
 // Example 4
-let arr = [1,2,3];
+let arr = [1, 2, 3];
 console.log(arr[3]);
+//arrays are zero indexed, index 3 does not exist,
diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
@@ -6,9 +6,23 @@
 */
 
 function evenNumbers(n) {
-    // TODO
+  //let text = '';
+  let i = 0;
+  // TODO
+  let arr = [];
+  while (arr.length < n) {
+    if (i % 2 === 0) {
+      arr.push(i);
+      i++;
+    } else {
+      i++;
+    }
+  }
+  console.log(arr);
 }
 
 evenNumbers(3); // should output 0,2,4
 evenNumbers(0); // should output nothing
 evenNumbers(10); // should output 0,2,4,6,8,10,12,14,16,18
+
+//console.log(evenNumbers(3));
diff --git a/1-exercises/C-while-loop-with-array/exercise.js b/1-exercises/C-while-loop-with-array/exercise.js
@@ -5,19 +5,35 @@
 */
 
 const BIRTHDAYS = [
-    "January 7th",
-    "February 12th",
-    "April 3rd",
-    "April 5th",
-    "May 3rd",
-    "July 11th",
-    "July 17th",
-    "September 28th",
-    "November 15th"
+  "January 7th",
+  "February 12th",
+  "April 3rd",
+  "April 5th",
+  "May 3rd",
+  "July 11th",
+  "July 17th",
+  "September 28th",
+  "November 15th",
 ];
 
 function findFirstJulyBDay(birthdays) {
-    // TODO
+  let text = "";
+  let i = 0;
+  // TODO
+  //let arr = [];
+  while (i < birthdays.length) {
+    if (birthdays[i].includes("July")) {
+      text = birthdays[i];
+      return text;
+    } else {
+      i++;
+    }
+  }
+  console.log(birthdays.includes("July"));
 }
-
+// note string prototype includes seems to work diffrently form
+// the array prototype includes, array prototype includes seems
+//more specific and returns false if the mactch is not exact
+// string prototype inclues seems to work more like regex but
+// only return true even if multiple accurence are found/
 console.log(findFirstJulyBDay(BIRTHDAYS)); // should output "July 11th"
diff --git a/1-exercises/D-do-while/exercise.js b/1-exercises/D-do-while/exercise.js
@@ -7,9 +7,26 @@
 */
 
 function evenNumbersSum(n) {
+  let count = 0;
+  let i = 0;
+  let sum = 0;
+
+  do {
+    if (i % 2 === 0) {
+      sum += i;
+      count++;
+      i++;
+      //console.log(`i am ${count}`);
+      //console.log(i);
+    } else {
+      i++;
+    }
+
     // TODO
+  } while (count < n);
+  return sum;
 }
 
 console.log(evenNumbersSum(3)); // should output 6
 console.log(evenNumbersSum(0)); // should output 0
-console.log(evenNumbersSum(10)); // should output 90
+console.log(evenNumbersSum(10)); // should output 90
diff --git a/1-exercises/E-for-loop/exercise1.js b/1-exercises/E-for-loop/exercise1.js
@@ -4,11 +4,14 @@
     Change the while loop below into a for loop.
 */
 
-
 // Change the below code to use a for loop instead of a while loop.
 let i = 0;
-while(i < 26) {
-    console.log(String.fromCharCode(97 + i));
-    i++;
+while (i < 26) {
+  console.log(String.fromCharCode(97 + i));
+  i++;
 }
 // The output shouldn't change.
+for (let i = 0; i < 26; i++) {
+  console.log(String.fromCharCode(97 + i));
+  //console.log(1);
+}
diff --git a/1-exercises/E-for-loop/exercise2.js b/1-exercises/E-for-loop/exercise2.js
@@ -10,23 +10,15 @@
     Using a for loop, output to the console a line about the age of each writer.
 */
 
-const WRITERS = [
-    "Virginia Woolf",
-    "Zadie Smith",
-    "Jane Austen",
-    "Bell Hooks",
-    "Yukiko Motoya"
-]
+const WRITERS = ["Virginia Woolf", "Zadie Smith", "Jane Austen", "Bell Hooks", "Yukiko Motoya"];
 
-const AGES = [
-    59,
-    40,
-    41,
-    63,
-    49
-];
+const AGES = [59, 40, 41, 63, 49];
 
 // TODO - Write for loop code here
+for (let i = 0; i < AGES.length; i++) {
+  //console.log(String.fromCharCode(97 + i));
+  console.log(`${WRITERS[i]} is ${AGES[i]} years old`);
+}
 
 /*
 The output should look something like this:

diff --git a/1-exercises/F-for-of-loop/exercise.js b/1-exercises/F-for-of-loop/exercise.js
@@ -4,13 +4,21 @@
 
 // TODO Use a for-of loop to output each of the tube stations below.
 let tubeStations = [
-    "Aldgate",
-    "Baker Street",
-    "Picadilly Circus",
-    "Oxford Street",
-    "Tottenham Court Road"
+  "Aldgate",
+  "Baker Street",
+  "Picadilly Circus",
+  "Oxford Street",
+  "Tottenham Court Road",
 ];
-
+for (let station of tubeStations) {
+  console.log(station);
+}
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+for (let letter of str) {
+  console.log(letter.toLocaleUpperCase());
+}
+
+// not for of works on strings (unexpected). and str.split() (expexted)
+// as .split()converts to an array.
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -12,52 +12,50 @@
 */
 
 function getTemperatureReport(cities) {
-    // TODO
+  // TODO
+  let arr = cities.map((e) => {
+    let temp = temperatureService(e);
+    return `The temperature in ${e} is ${temp} degrees`;
+  });
+  return arr;
 }
-
+//console.log(getTemperatureReport(usersCities));
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function temperatureService(city) {
-    let temparatureMap  = new Map();
-
-    temparatureMap.set('London', 10);
-    temparatureMap.set('Paris', 12);
-    temparatureMap.set('Barcelona', 17);
-    temparatureMap.set('Dubai', 27);
-    temparatureMap.set('Mumbai', 29);
-    temparatureMap.set('São Paulo', 23);
-    temparatureMap.set('Lagos', 33);
-    
-    return temparatureMap.get(city);
+  let temparatureMap = new Map();
+
+  temparatureMap.set("London", 10);
+  temparatureMap.set("Paris", 12);
+  temparatureMap.set("Barcelona", 17);
+  temparatureMap.set("Dubai", 27);
+  temparatureMap.set("Mumbai", 29);
+  temparatureMap.set("São Paulo", 23);
+  temparatureMap.set("Lagos", 33);
+
+  return temparatureMap.get(city);
 }
 
 test("should return a temperature report for the user's cities", () => {
-    let usersCities = [
-        "London",
-        "Paris",
-        "São Paulo"
-    ]
-
-    expect(getTemperatureReport(usersCities)).toEqual([
-        "The temperature in London is 10 degrees",
-        "The temperature in Paris is 12 degrees",
-        "The temperature in São Paulo is 23 degrees"
-    ]);
+  let usersCities = ["London", "Paris", "São Paulo"];
+
+  expect(getTemperatureReport(usersCities)).toEqual([
+    "The temperature in London is 10 degrees",
+    "The temperature in Paris is 12 degrees",
+    "The temperature in São Paulo is 23 degrees",
+  ]);
 });
 
 test("should return a temperature report for the user's cities (alternate input)", () => {
-    let usersCities = [
-        "Barcelona",
-        "Dubai"
-    ]
-
-    expect(getTemperatureReport(usersCities)).toEqual([
-        "The temperature in Barcelona is 17 degrees",
-        "The temperature in Dubai is 27 degrees"
-    ]);
+  let usersCities = ["Barcelona", "Dubai"];
+
+  expect(getTemperatureReport(usersCities)).toEqual([
+    "The temperature in Barcelona is 17 degrees",
+    "The temperature in Dubai is 27 degrees",
+  ]);
 });
 
 test("should return an empty array if the user hasn't selected any cities", () => {
-    expect(getTemperatureReport([])).toEqual([]);
-});
+  expect(getTemperatureReport([])).toEqual([]);
+});
diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -5,20 +5,31 @@
 
 // This function shouldn't be changed
 function generateRandomNumber() {
-    console.log("Generating number...");
-    return Math.round(Math.random() * 100);
+  console.log("Generating number...");
+  return Math.round(Math.random() * 100);
 }
 
 function getRandomNumberGreaterThan50() {
-    // TODO - implement using a do-while loop
-}
+  // TODO - implement using a do-while loop
+  //let i = 0;
+  let test = 0;
+  do {
+    test = generateRandomNumber();
+    //let i = test;
 
+    //console.log(i);
+    //test();
+  } while (test <= 50);
+  return test;
+}
+getRandomNumberGreaterThan50();
+console.log(getRandomNumberGreaterThan50());
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 test("Returned value should always be greater than 50", () => {
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
 });