//

//

// Question 1

let name = "Ochuba Ebubechukwu";

alert("My name is " + name);

//Question 2

let num1 = 10;

let num2 = 5;

let sum = num1 + num2;

let diff = num1 - num2;

let prod = num1 * num2;

let quot = num1 / num2;

console.log("Sum:", sum);

console.log("Difference:", diff);

console.log("Product:", prod);

console.log("Quotient:", quot);

//Question 3

let celsius = 25;

let fahrenheit = (celsius * 9 / 5) + 32;

console.log(celsius + "°C is " + fahrenheit + "°F");

//Question 4

let length = 10;

let width = 5;

1₦₦on1 area = length * width;

console.log("Area of rectangle:", area);

//Question 5

let number = 7;

if (number % 2 === 0) {

console.log(number + " is even.");

} else {

console.log(number + " is odd.");

}

// Question 6

let year = 2024;

if ((year % 4 === 0 && year % 100 !== 0) || (year % 400 === 0)) {

console.log(year + " is a leap year.");

} else {

console.log(year + " is not a leap year.");

}

// Question 7

function reverseString(words) {

let str = String(words); // Capital 'S'

let reversed = str.split("").reverse().join("");

console.log('Your word in reverse is ' + reversed);

}

let job = 'job';

reverseString(job);

// Question 8.

function countVowel(word) {

let count = 0;

let letters = word.toLowerCase().split("");

let vowels = ['a', 'e', 'i', 'o', 'u'];

for (let letter of letters) {

if (vowels.includes(letter)) {

count++;

}

}

console.log("Number of vowels:", count);

}

let testWord = 'wharse';

countVowel(testWord);

// Question 9

let numbers = [10, 25, 7, 43, 19];

let max = numbers[0]; // I will assume the first number is the largest

for (let i = 1; i < numbers.length; i++) {

if (numbers[i] > max) {

max = numbers[i]; //This code will update max if current number is bigger

}

}

console.log("The largest number is:", max);

//Question 10

function palindromeCheck(test) {

let str1 = String(test);

let letters = str1.toLowerCase().split("");

let reversed = str1.toLowerCase().split("").reverse();

if (letters.length !== reversed.length) {

return false

for (let i = 0; i < letters.length; i++){

if(letters[i] != reversed[i]){

return false

}

}

}

}

//Question 11

function factorial(n) {

if (n === 0 || n === 1) return 1;

let result = 1;

for (let i = 2; i <= n; i++) {

result *= i;

}

return result;

}

// Let's test it to see if we are correct

console.log(factorial(5));

// Question 12

function randomBetween(min, max) {

return Math.floor(Math.random() * (max - min + 1)) + min;

}

// testing our function, we have:

console.log(randomBetween(10, 50)); // Output: Random number between 10 and 50

// Question 13

function convertTime(seconds) {

let hours = Math.floor(seconds / 3600);

seconds %= 3600;

let minutes = Math.floor(seconds / 60);

let secs = seconds % 60;

console.log(`${hours} hour(s), ${minutes} minute(s), ${secs} second(s)`);

}

// Example:

convertTime(2566);

// Question 14

function isPrime(n) {

if (n <= 1) return false;

if (n === 2) return true;

for (let i = 2; i <= Math.sqrt(n); i++) {

if (n % i === 0) return false;

}

return true;

}

console.log(isPrime(11));

// Question 15

function capitalizeWords(sentence) {

let words = sentence.split(" ");

let capitalizedWords = [];

for (let i = 0; i < words.length; i++) {

let word = words[i];

let capitalizedWord = word.charAt(0).toUpperCase() + word.slice(1);

capitalizedWords.push(capitalizedWord);

}

let result = capitalizedWords.join(" ");

return result;

}

let sentence = "hello adefolarin from ebube";

console.log(capitalizeWords(sentence)); // Output: "Hello World From Javascript"

// Question 16

function sumToN(n) {

let sum = 0;

for (let i = 1; i <= n; i++) {

sum += i;

}

return sum;

}

console.log(sumToN(10));

// Question 17

function findAverage(numbers) {

// Step 1: Create a variable to store the t1q1

for (let i = 0; i < numbers.length; i++) {

sum = sum + numbers[i];

}

let average = sum / numbers.length;

return average;

let scores = [10, 20, 30, 40, 50];

console.log("The average is:", findAverage(scores));

//Question 18

function removeDuplicates(arr) {

let uniqueItems = [];

for (let i = 0; i < arr.length; i++) {

let item = arr[i];

if (!uniqueItems.includes(item)) {

uniqueItems.push(item);

}

}

return uniqueItems;

}

// Example:

let numbers = [1, 2, 3, 2, 4, 3, 5];

console.log("Without duplicates:", removeDuplicates(numbers));

// Question 19

function countdown() {

for (let i = 10; i >= 1; i--) {

console.log(i);

}

console.log("Blast off!");

}

countdown();

// Question 20

function isOnlyNumbers(str) {

for (let i = 0; i < str.length; i++) {

let char = str[i];

if (char < '0' || char > '9') {

return false;

}

}

return true;

}

console.log(isOnlyNumbers("12345"));

console.log(isOnlyNumbers("12a45"));

// Question 21