CareerCup

Define a class Marks as having the fields marks1, marks2, marks3 and maxMarks all of type int.
In the class Marks
- define a constructor of the class whch takes 3 ints as input and assigns them to marks1, marks2 and mark3 respectively. It aslo assigns the maximum of marks1, marks2 and marks3 to maxMarks.
- define a method getMaxMarks() which returns the maximum of marks1, marks2 and marks3.
- define a method isPass() which returns true if the average of marks1, marks2 and marks3 is at least 40.
Define a class StudentList which has the field allMarks(of type Marks[]). In the class, define the methods
- totalStudents() which returns the number of total students which is the number of objects in the array allMarks
- passCount() which returns the number of students who have passed.

Define a class Point having 2 fields x (int) and y (int) which represents a point (x,y)
Define a class Line having 2 Points, pt1 and pt2.
Define a class Quadrilateral having 4 Points, pt1, pt2, pt3 and pt4. The class also has the following functions
- getAllLines() which returns a Line[] consisting all 4 lines of the Quadrilateral. Note that the 4 lines of the quadrilateral will be pt1:pt2, pt2:pt3, pt3:pt4 and pt4:pt1
- longestSide() which return a Line that represents the longest the side of the Quadrilateral.
Also define the constructors for each class

Define the following classes
- Book which has the fields title(String), author (String), count (int). Also define the following function in the class
increment() : increases count by 1.
decrement() : reduces the count by 1. If count is 0, it remains 0.
- Library which has a field books (of type Book[]). It also has the following functions
getCount(String title) : given the title of a book as parameter, return how many copies of the book are there in the library
getCount(Book book) : given the object of type Book as parameter, return how many copies are there of that book in the library
getCount() : returns the total number of books in the library
getDiffCount() : returns the number of different books in the library
addBook(Book book) : given an object of type Book as input, increment its count if it is in the library else adds the book.
removeBook(Book book) : given an object of type Book as input, decreases the count of that book if it exists in the library. If the count becomes 0, it is removed.

Define a class Passenger having the fields name (String), age (int), gender (char : M/F), weight (int). Define 2 constructors for this class, one with parameters and one which has no parameters.
Also define a class Train in which there are the following functions. Note that there are no fields in the class Train.
- int getTotalWeight(Passenger[] passengers) - returns the total weight of all the passengers in the input
- int countChildren(Passenger[] passengers) - returns the number of children in the input passengers. A child is defined as age 12 or below
- int countGender(Passenger[] passengers, boolean male) - returns the number of males if true else returns the number of females. A male has the gender 'M' and a female 'F'
- Passenger[] addPassenger(Passenger[] passengers, Passenger passenger1) - returns a Passenger[] which contains all the passengers and also passenger1.

A game is being played with the following rules :
- The first player says 1, the next 2 and so on.
- If a number is a multiple of 4 or 7 then that number is skipped and the next number is spoken. However if the number is a multiple of both 4 and 7 then the number is not skipped.
Define a function which taken a number n as input and returns the nth number which will be spoken.
nthNumber(10) = 15 (the order of numbers spoken is 1,2,3,5,6,9,10,11,13,15)

Given an array of strings as input, return an array of all strings that have repeated chars that appear together. For e.g. in "hello" l and in "summer" s is a repeated char that appears together. However in "robot" o is not a repeated char as it does not appear together.
repeatChars({"hello","robot","summer","elephant"}) = {"hello","summer"}

You have been given an array of int as input. Return true if there exist 2 numbers in the array whose sum is equal to the sum of the rest of the numbers in the array.
twoSum({2,11,5,1,4,7}) = true (11+4 = 2+5+1+7)