Programming & Computer Science Answers

A decision tree is a decision support tool that uses a tree-like model of decisions and their

possible consequences. It is widely used in classification and prediction problems. You are required to

implement the below decision tree to help you decide whether you should go for a trip or not based on

various factors. You also need to take string inputs from the user in this program.

Suppose you want to deposit a certain amount of money into a savings account, and then leave it alone to draw interest for the next 10 years. At the end of 10 years, you would like to have $10,000 in the account. How much do you need to deposit today to make that happen? You can use the following formula, which is known as the present value formula, to find out: The terms in the formula are as follows: • P is the present value, or the amount that you need to deposit today. • F is the future value that you want in the account. (In this case, F is $10,000.) • r is the annual interest rate. • n is the number of years that you plan to let the money sit in the account. Write a method named presentValue that performs this calculation. The method should accept the future value, annual interest rate, and number of years as arguments. It should return the present value, which is the amount that you need to deposit today.

Replacing Characters of Sentence

You are given a string

S. Write a program to replace each letter of the string with the next letter that comes in the English alphabet.

Note: Ensure that while replacing the letters, uppercase should be replaced with uppercase letters, and lowercase should be replaced with lowercase letters.

Input

The first line of input is a string.

Explanation

In the given example,

Hello World.

If we replace each letter with the letter that comes next in the English alphabet,

H becomes I, e becomes f and so on ... So, the output should be Ifmmp Xpsme.

Sample Input 1

Hello World

Sample Output 1

Ifmmp Xpsme

Sample Input 2

Something is better than Nothing

Sample Output 2

Tpnfuijoh jt cfuufs uibo Opuijoh

Final Value with Appreciation

Given principal amount

principal as an input, time period in years time and appreciation percentage apprPercentage as optional inputs, write a JS function to return the final value finalValue with the given appreciation percentage and time period. The default values for time and apprPercentage are 2 and 5 respectively.

Quick Tip

The formula to calculate the final value with appreciation is,

finalValue = principal * (1 + time * appreciation / 100)

Input

The first line of input contains a number principal

The second line (optional) of input contains a number time

The third line (optional) of input contains a number apprPercentage

Output

The output should be a single line containing the finalValue

Sample Input 1

1000

2

3

Sample Output 1

1060

Sample Input 2

3000

Sample Output 2

3300.0000000000005

Search Item in a Mart

Given an array

mart of objects in the prefilled code and categoryOfItem, item as inputs, create a JS promise, resolve with "Item Found" text, if the

categoryOfItem matches with the category and the corresponding items list includes the itemreject with "Category Not Found" text, if the

categoryOfItem does not match with any catergory in the martreject with "Item Not Found" text, if the

items list does not include item Use async/await and try/catch blocks.

Quick Tip

You can use array methods find() and includes().

Input

The first line of input contains a string categoryOfItem

The second line of input contains a number item

Output

The output should be a single line string with the appropriate message

Sample Input 1

pulses

green gram

Sample Output 1

Item Found

Sample Input 2

detergents

tide

Sample Output 2

Category Not Found

Submarine

Given two numbers

totalTorpedos, torpedosFired as inputs, write a super class Submarine with property and methods as below,PropertyDescriptionisSubmergedIt should contain a boolean value to indicate whether the submarine is submerged or not.....

The sequence of operations is,

1. Submerge the Submarine
2. Fire torpedos
3. Surface the Submarine

Input

• The first line of input contains a number totalTorpedos
• The second line of input contains a number torpedosFired

Output

• The first line of output is a string with Submarine Submerged text
• The second line of output is a string with the number of torpedos fired and left, as shown in sample outputs
• The third line of output is a string with Submarine Surfaced text

Sample Input 1

5

2

Sample Output 1

Submarine Submerged

2 Torpedos Fired, 3 Left

Submarine Surfaced

Sample Input 2

10

2

Sample Output 2

Submarine Submerged

2 Torpedos Fired, 8 Left

Submarine Surfaced

Area and Circumference of a Circle

Given radius

radius of a circle, write a JS constructor function with the methods getArea and getCircumference to calculate the area and circumference of the circle.

Note

The value of π = 3.14

Quick Tip

Use the formulae to calculate,

Area of circle = π * radius * radius

Circumference of circle = 2 * π * radius

Input

The input will be a single line containing a number radius

Output

The first line of output should contain the area of the circle

The second line of output should contain the circumference of the circle

Sample Input 1

7

Sample Output 1

153.86

43.96

Sample Input 2

25

Sample Output 2

1962.5

157

Do you believe in doppelgangers? Well they are very much possible with strings! Check if the two given strings are the same or not.

Instructions:

1. Input two strings in different lines (one each line).
2. Print out the strings in one line, separate them with a \.
3. Check whether the two strings are equal, print out "Equal" if they are.

Instructions

1. Input two strings in different lines (one each line).
2. Print out the strings in one line, separate them with a \.
3. Check whether the two strings are equal, print out "Equal" if they are.

Input

Two lines containing a string on each.

hello
hello

Output

The first line contains the two inputted strings separated by a \.

The second line contains a string result.

hello\hello
Equal

totalTorpedos, torpedosFired as inputs, write a super class Submarine with property and methods as below,PropertyDescriptionisSubmergedIt should contain a boolean value to indicate whether the submarine is submerged or not.

MethodDescriptiondiveWhen this method is called, it should set the value of isSubmerged to true and log "Submarine Submerged" text in the console.surfaceWhen this method is called, it should set the value of isSubmerged to false and log "Submarine Surfaced" text in the console.

Add a sub class weaponUnit which extends to Submarine with the below properties and methods,

The sequence of operations is,

Submerge the Submarine

Fire torpedos

Surface the Submarine

Sample Input 1

5

2

Sample Output 1

Submarine Submerged

2 Torpedos Fired, 3 Left

Submarine Surfaced

Sample Input 2

10

2

Sample Output 2

Submarine Submerged

2 Torpedos Fired, 8 Left

Submarine Surfaced

Describe how reflection can be used to achieve team improvement