Quiz 4

Overview

• This quiz has 4 sections.
  1. fundamentals
     • Calculator
     • StringUtils
  2. arrays
     • ArrayUtils
  3. object orientation - Difficult
     • Account
     • BankAccount
     • Bank
     • Transactable
     • Employee
     • Worker
  4. collections
     • WordCounter
     • Food - Difficult
     • Curry
     • Pepper
     • Spice
     • Ginger

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Section 1 - Fundamentals

Calculator

• Description
  • The purpose of this class is to create a simple calculator.
• Methods to Complete
  • Double add(Double val1, Double val2)
    • return the sum of val1 and val2
  • Double subtract(Double val1, Double val2)
    • return the difference of val1 and val2
  • Double divide(Double val1, Double val2)
    • return the quotient of val1 and val2
  • Double squareRoute(Double value)
    • return the square root of value
  • Double square(Double value)
    • return the square of value
  • Double[] squareRoutes(Double[] values)
    • return an array of Double, containing the square root of each of the elements in values.
  • Double[] squares(Double[] values)
    • return an array of Double, containing the square of each of the elements in values.

StringUtils

• Description
  • The purpose of this class is to create utility String methods
• Methods to Complete
  • String getMiddleCharacter(String string)
    • return character at index string.length()/2 as String.
  • String capitalizeMiddleCharacter(String string)
    • return near-identical String with character at index string.length()/2 capitalized.
  • String lowercaseMiddleCharacter(String string)
    • return near-identical String with character at index string.length()/2 lowercased.
  • String invertCasing(String string)
    • return near-identical String with each character's casing inverted: Capital letters become lowercase, lowercase letters become lowercase.
  • Boolean hasDuplicateConsecutiveCharacters(String string)
    • return true if string contains two identical characters in adjacent indices.
  • Boolean removeDuplicateConsecutiveCharacters(String string)
    • return near-identical String with each occurrence of duplicate-adjacent characters removed.
  • Boolean isIsogram(String string)
    • return true if each Character in string occurs exactly 1 time.

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Section 2 - Arrays

ArrayUtils

• Description
  • The purpose of this class is to create a utility for manipulating arrays.
• Methods to Complete
  • String getMiddleElement(String[] values)
    • return the element at index values.length/2
  • String[] removeMiddleElement(String[] values)
    • return near-identical array with element at index values.length/2 removed.
  • String getLastElement(String[] values)
    • return element at index values.length-1
  • String[] removeLastElement(String[] values)
    • return near-identical array with element at index values.length-1 removed.

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Section 3 - Object Orientation

Account

• Description
  • The purpose of this class is to create a model of an Account.
• Methods to Complete
  • Long getId()
  • void setId(Long id)

BankAccount

• Description
  • The purpose of this class is to create a subclass of an Account which implements Transactable.
• Methods to Complete
  • void setBalance(Double double)

Bank

• Description
  • The purpose of this class is to create an encapsulation of a Collection of BankAccount objects.
• Methods to Complete
  • BankAccount removeBankAccountByIndex(Integer indexNumber)
  • void addBankAccount(BankAccount bankAccount)
  • Boolean containsBankAccount(BankAccount bankAccount)

Employee

• Description
  • The purpose of this class is to create an implementation of a Worker and Transactable which can deposit, withdrawal, and getBalance, of its composite BankAccount.
• Methods to Complete
  • BankAccount getBankAccount()
  • void setBankAccount(BankAccount bankAccount)

Transactable

• Description
  • The purpose of this interface is to ensure a class can deposit, withdrawal, and getBalance.
• Methods to Complete
  • void deposit(Double amountToIncreaseBy)
  • void withdrawal(Double amountToDecreaseBy)
  • Double getBalance()

Worker

• Description
  • The purpose of this interface is to ensure a class has BankAccount
• Methods to Complete
  • BankAccount getBankAccount()
  • void setBankAccount(BankAccount bankAccount)

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Section 4 - Collections

Word Counter

• Description
  • The purpose of this class is to manage a mapping of String to Integer.
  • The class should be able to identify the number times a word has occurred in a given String array
    • A word is a series of characters delimited by spaces
• Methods to Complete
  • Map<String, Integer> getWordCountMap()

Food

• Description
  • The purpose of this class is to manage a list of Spice object.
  • The class should be able to identify the number of specific spice-type applied to an instance of a food.
• Methods to Complete
  • List<Spice> getAllSpices()
  • <SpiceType extends Class<? extends Spice>> Map<SpiceType, Integer> getSpiceCount()
  • void applySpice(Spice spice)

Curry, Ginger, Pepper

• Description
  • The purpose of this class is to create a concrete implementation of a Spice
• Methods to Complete
  • String getName()