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// 9. Write a program to reverse an array

var letters = ['a', 'b', 'c']
letters.reverse()
console.log(letters)

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// 8. Write a program to create an array of objects "employees" with properties "name", "age", and "city" and set their respective values to
// "John", 30, "New York", "Thomas", 40, "Chicago", "Lily", 35, "San Francisco". Print the name, age, and city of each employee.
// Print the name, age, and city of each employee using for..of loop.

var employees = [
  { name: 'John', age: 30, city: 'New York' },
  { name: 'Thomas', age: 40, city: 'Chicago' },
  { name: 'Lily', age: 35, city: 'San Francisco' }
]
for (var employee of employees) {

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// 7. Declare an object named "toy" with an empty object as its initial value. 
// Add the properties "name" and "category" with values "Super Space Rocket" and "Action Figures & Playsets" respectively.

var toy = {}
toy.name = 'Super Space Rocket'
toy.category = 'Action Figures & Playsets'
console.log(toy)

function describeToy (toy, name, category) {
  toy.name = name

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// 6. Declare an object named "employee" with properties "name", "age", and "city". Delete the "city" property from the object.

var employee = {
  name: 'Zelda',
  age: 40,
  city: 'New York'
}
delete employee.city
console.log(employee)

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// 5. Declare an object named "person" with properties "name", "age", and "city" and set their respective values to 
// "John", 30, "New York" and hobbies as "reading", "swimming", "traveling". Print the name, age, and city of the person.

var person = {
  name: 'John',
  age: 30,
  city: 'New York',
  hobbies: ['reading', 'swimming', 'traveling']
}
console.log(person.name)

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// 4. Write a program to find maximum number in a numeric array.

console.log("\n-------------------------------------------------\n");

var numbers = [0, 100, 5]
var maximum = numbers[0]
for (var number of numbers) {
  if (number > maximum) {
    maximum = number
  }

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// 3. Write a program that iterates through each number of an array using for..of loop and computes the sum of squares of each of these numbers.
var result = 0
var numbers = [1, 2, 3]
for (var number of numbers) {
  var square = number * number
  console.log(square)
  result += square
  console.log(result)
}
console.log(result)

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// 2. Create a variable `mixedArray` that contains a mix of data types, including numbers, strings, and booleans.
var mixedArray = ['hello', 42, true]
console.log(mixedArray)

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// 1. Create a variable `favoriteFruits` and assign it an array of strings representing your favorite fruits.

var favoriteFruits = ['olives', 'apples', 'grapes']
console.log(favoriteFruits)

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// 8. Arrow Function
// Write a function to print a right angle triangle of stars. Use arrow function which takes a number as a parameter that represents the number of lines in the triangle.

// *
// **
// ***

var triangle = (x) => {
  for (var i = 1; i <= x; i++) {
    var star = '*'