Guide to High School Computer Science
  • 💻Introduction
    • windows & Python Development
    • macOS & Python Development
    • Visual Studio Code Settings
    • Set up Github
    • Author Page
  • 🧠Prerequisite Skills
    • Keyboard Typing
    • Files & Directories
    • Use of Command Line
    • Git & GitHub
    • Markdown
    • Starting Your Python Project
  • 🐍Python Programming
    • 🍎Python Basics
      • What is Python?
      • Procedural Programming & Programming Paradigms
      • String Formatting
      • Data Types
      • Input & Output to Console
      • Working with Numbers
      • Useful Built-in Functions
      • Math & Random Module
      • Boolean Data Object
      • Comparison, Logical, and Membership Operators
      • If Statements
      • Binary Decisions
      • Multiple Decisions
      • Nested Conditions
      • [EXTRA] Bitwise Operators
      • [EXTRA] Python Style Guide
    • ⏮️Iterations
      • Introduction to While Loops
      • Infinite Loop
      • Controlling Your While Loops
      • Introduction to For Loops
      • For Loops w/ Numeric Sequences
      • For Loops w/ Strings & Lists
      • Iterable Functions w/ For Loops
    • 📦Collections
      • Strings
        • String Basics
        • String Indexing
        • String Slicing
        • String Operators & Functions
        • Basic String Methods
        • String Methods Extended
        • String Methods Document
      • Tuples & Lists
        • Tuples
        • List Basics
        • List are Mutable
        • Adding Items to a List
        • Removing Items from a List
        • Search & Reverse a List
        • List Comprehension
        • List Methods Document
      • Sets
      • Dictionary
      • How to Store Multiple Data Items
    • 💡Defining Functions
      • Functions
      • print() vs return
      • Pre-determined Arguments
      • Nested Functions
      • Map & Filter
      • [Extra] Dynamic Arguments
    • 💾File I/O
      • How to Save Text to an External File
      • Reading CSV in Python
      • Reading JSON in Python
    • 🔨Basic Python Projects
      • Basic Calculator
        • Improving the calculator
        • Exercise Set 1
        • Exercise Set 2
        • 💎Streamlit Application #1
      • Basic Password Generator
        • Exercise Set 3
        • Exercises Related to Math
        • 💎Streamlit Application #2
      • A To-Do Task List
    • ⏳Introduction to Algorithmic Thinking
      • Big-O Notation
      • Basic Algorithms
        • Linear Search
        • Binary Search
        • Basic Sorting Algorithms
      • Recursion
      • Brute Force Algorithms
      • Greedy Algorithm
        • Time on Task (CCC 2013 J4)
        • Dijkstra’s Algorithm
      • Divide and Conquer
        • Merge Sort
      • Dynamic Programming
    • 🤯Object Oriented Programming
      • Class & Objects (Definitions)
      • OOP in Python
      • Encapsulation
      • Polymorphism
      • Inheritance & Overriding
      • Override Magic Methods
      • Case Study: 2D Vectors
      • Case Study: Deck of Cards
      • Exercise
      • Abstract Data Types
      • Case Study: Static 1D Array From Java
    • Competitive Programming
      • Is This Sum Possible?
        • Is the dataset sorted?
        • Searching for a value
        • Determine if the difference between an integer from the array and the target value exists
        • Sorting Algorithms
        • Using Two Pointers
      • Two Sum - LeetCode
        • Generate all possible pairs of values
        • Subtract each value from the target, see if the difference exists in the list
      • Longest Common Prefix - LeetCode
        • Compare all possible prefixes
        • Create the longest common prefix with the direct neighbour
      • Length of Last Word - LeetCode
        • Compare all possible prefixes
      • Where can I go from one point to another?
      • Sample Outline
    • IB Recipe Book
  • 💾Python & Databases
    • Intro to Databases & Data Modeling
      • Common Data Types in SQL
      • Introduction to ERDs
      • Primary Keys and Foreign Keys
      • Database Normalization
    • What is SQL?
      • Getting Started
      • SELECT Queries
        • Selection with Conditions
        • Selection with Fuzziness
        • Selection and Sorting in Order
        • Selection without Duplicates
        • Selection with Limited Number of Outputs
      • AGGREGATE Queries
        • Counting Rows
        • Sum, Average, Min/Max Queries
        • Working with Aggregate Queries
        • Power of using Groups
        • Exercise
      • Interacting with Multiple Table
      • Inserting Data
      • External Resource
  • ☕Java Essentials
    • Basics
      • Starting Java
      • Data & Variables
      • Handling User Inputs & Type Conversion
      • Arithmetic
      • IPO Model
      • Basic Built-in Methods
      • Exercise Questions
    • Conditionals
      • Boolean Operators
      • Compare Strings
      • If Statements
      • If Else Statements
      • Making Multiple Decisions
      • Using Switch
      • Flowchart Symbols
      • Exercise Questions
    • Iterations
      • While Loops
      • For Loop
      • Exercises
    • Java Type Casting
    • Strings
      • Common String Practices
      • String Formatting
      • Java Special Characters
    • Collection
      • Arrays
      • For Each Loop
      • ArrayList
      • Exercise Questions
    • Static Methods
      • (Aside) Clearing your Console
    • Randomness in Java
    • Delayed Output in Java
    • Java Output Formatting
    • Java Style Guide
  • 🛠️JavaScript Programming
    • Our Programming Editor & Workflow
      • Hello, world!
      • Commenting & Variables
      • Data in JavaScript
      • Operators
      • String Formatting
      • Getting User Input
    • JavaScript Exercise Set 1
    • Making Decisions
      • Comparing Values
      • Combining Boolean Comparisons
      • Creating Branches
    • JavaScript Exercise Set 2
    • While Loops
      • Infinite While Loop
      • While Loops and Numbers
      • While Loops and Flags
      • While loops w/ Strings
    • JavaScript Exercise Set 3
    • Subprograms & Functions
      • Creating a Function in JavaScript
      • Function with Input and Assignable Output
    • JavaScript Exercise Set 4
  • 💾Topics in CS
    • Computer Environments & Systems
      • Computer Components
        • In-depth Explanations
      • File Maintenance
      • Computer & Safety
      • Software Development
      • Bits & Binary
    • Careers related to Computer Science
    • Postsecondary Opportunities
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On this page
  • Simple Problems
  • Challenging Problems
  • Vowel Counter
  • Tournament Selection (CCC 2016 J1)
  • Up and Down
  • Rock Paper Scissors
  • Prime Number Checker
  • Palindrome Checker
  • Twenty Questions
  1. JavaScript Programming

JavaScript Exercise Set 3

Simple Problems

  1. Create a program that adds all the numbers from 1 up to the user inputted numeric value.

  2. Create a program that asks for 10 numbers; average of the inputted numbers.

    1. Bonus: let the user decide when to stop inputting the numbers.

  3. Create a program that makes the user continuously guess a WORD (string) until they get the secret word set by you the programmer correct.

  4. “FizzBuzz.” From 1 to 50, if the number is a multiple of three: print “Fizz”, if the number is a multiple of five: print “Buzz”, if they are multiples of both: print “FizzBuzz”.

Challenging Problems

Vowel Counter

Assume that our vowels in our alphabet are only from this set: a e i o u.

Given a string input from the user, determine and output the number vowels within it.

// Sample Input
Hello, World!

// Sample Output
3

There are two vowels in Hello and one vowel in World!.

Tournament Selection (CCC 2016 J1)

Each player in a tournament plays six games. There are no ties. The tournament director places the players in groups based on the results of games as follows:

  • if a player wins 5 or 6 games, output 1 as they are placed in Group 1;

  • if a player wins 3 or 4 games, output 2 as they are placed in Group 2;

  • if a player wins 1 or 2 games, output 3 as they are placed in Group 3;

  • if a player does not win any games, they are eliminated from the tournament; output-1

Write a program to determine which group a player is placed in when given 6 inputs of either W for a win and L for a loss.

// Sample Input
W
L
W
W
L
W
// Sample Output
2

Up and Down

Write a program that will count up from 1 to the user's inputted number, and count down back towards 1.

// Sample Input
5
// Sample Output
1
2
3
4
5
4
3
2
1

Rock Paper Scissors

The game should end after a single player has won 5 times. Output who won.

Prime Number Checker

Palindrome Checker

A palindrome is a word that is the same spelt forwards and backwards.

  • civic

  • madam

  • level

  • mom

  • racecar

  • tacocat

Create a program that determines if the inputted word is a palindrome.

Twenty Questions

Create a program that plays a “20 Questions” game to guess a positive integer between 1 and 100 that the user has in mind.

  • The user will be instructed by the program to think of a single positive integer from 1 to 100 inclusively

  • The program will win if it can guess the number that the user is thinking of in 20 questions or less

  • The user will win if the program fails to guess the number

  • The user does not need to input their number that they are thinking

The program will ask the user a series of yes/no questions to narrow down the possible numbers and will attempt to guess the number within 20 questions.

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Last updated 6 months ago

Create a two player game of . There will be two inputs: player 1's choice and player 2's choice.

Create a program that determines if the user inputted number of 2 or greater is a .

Some examples of :

🛠️
Rock Paper Scissors
prime number
Palindromes