CS203 Object Oriented Programming Homework 1

Objectives:




JAVA Practice









Create the necessary JAVA files/functions to solve the problems below. Feel free to explore the JAVA syntax online, we suggest you use java official documentation.










HW1 Questions




cubeOfOdd (n1)




Write the function “cubeOfOdd” that takes an int n1 as input. The function will print i3 value for all non-negative odd integers i<n1.




   Sample Input:
Expected
Hints




Output:


n1 = 5
1
13=1




27
33=27
n1
=3
1
13=1
n1
=8
1
13=1




27
33=27




125
53=125




343
73=343
  


 introToJava (n2)







Write the function introToJava that takes a positive integer n2 and prints a string according to the following conditions




if n2 is divisible by 7, it should print “UAB”
if n2 is divisible by 3, it should print “CS”
if n2 is divisible by both 3 and 7, it should print “UAB CS 203”
if n2 is a prime number other than 3 or 7, it should print “Go Blazers”
otherwise, it should print the cube of n2



 Sample Inputs
Expected Outputs
n2=3
“CS”
n2=70
“UAB”
n2=4
64
n2=17
“Go Blazers”
  




















printJAVA (n3)







Write the function printJAVA that takes an integer n3 (n is equal or greater than 0) and returns a string with the integers 0 through n3, inclusive, except that every power of 2 is replaced by JAVA.




 Sample Inputs
Expected Outputs
n3=3
0JAVAJAVA3
n3=7
0JAVAJAVA3JAVA567
n3=10
0JAVAJAVA3JAVA567JAVA910
n3=1
0JAVA
  


 Two hints for a simpler, cleaner implementation: you actually do not need to do any type of division (float division, integer division, or modulo arithmetic using %) or exponentiation.



Context: the powers of 2 are naturally of fundamental importance to computer science, since computers store integers as binary numbers (base 2). An understanding of the function 2n is important for an appreciation of exponential-time algorithms (and its associated exponential explosion).












numSteps (n)




Write a function “numSteps” that takes a positive int “n” and returns the minimum number of steps to reduce it to zero. Here are the rules;

  





If the current number is even, you have to divide it by two



If the current number is odd, you need to subtract 1 from it



Sample Input




14




Sample Output




6




Hints




Step 1) 14 is even; divide by 2 and obtain 7. Step 2) 7 is odd; subtract 1 and obtain 6. Step 3) 6 is even; divide by 2 and obtain 3. Step 4) 3 is odd; subtract 1 and obtain 2. Step 5) 2 is even; divide by 2 and obtain 1. Step 6) 1 is odd; subtract 1 and obtain 0.










grader (avg_exams, avg_hw, attendance)




Write the function “grader” that takes two floats; avg_exams and avg_hw, and one integer attendance as input and returns a bool value. The function will check any student’s grade and attendance to decide if the student pass the course or fail. If the student pass, the function prints “PASS”, otherwise it prints “FAIL”. These are the criteria to pass the course;




The attendance must be greater than 20 to pass.



The avg_exams and the avg_hw must be greater than 70.



Either avg_exams or avg_hw must be greater than 85 (or both of them).
 Example Function Calls



















Grade: 5 Task à Each task is 20 points




If you don’t create the required functions with the proper function name, you will loose 5 points for each function.




Deliverables: Create a folder called “yourblazerid_HW1” and save all of your project files into this folder. Submit yourblazerid_HW1.zip file and the independence completion form to the Canvas (do not forget to sign the form).




Good Luck