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Quiz 2 Grading Guidelines

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These are the instructions given to the graders when they graded Quiz 2.

If the program does not compile and/or not run, you need to look at the code, and manually trace it to find out why. 

Sample Output

Welcome to the integer sequence generator!

Please enter an integer:
5

The first 5 even numbers are:
0 2 4 6 8 

The first 5 powers of 2 are:
2 4 8 16 32 

The first 5 prime numbers are:
2 3 5 7 11 

============================================================================

Welcome to the integer sequence generator!

Please enter an integer:
15

The first 25 even numbers are:
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

The first 25 powers of 2 are:
2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768

The first 25 prime numbers are:
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47

Point Distribution


    
	
  • 15 points: Good programming practices
    
	    They only had to include a few of these 
    (max -15)
      
	
    • -5 missing name or email ID
      • 
	
    • -5 for excessively long lines in code
      • 
	
    • -5 for excessive whitespace (more than 2-3 lines)
      • 
	
    • -5 for bad indentation
      • 
	
    • -5 for bad variable names
      • 
	
    • -5 for making one or more variables final that shouldn't be
      
 
      • 

    
	
    • 
	
  • 20 points: method declarations 
    (max of -20 pts)
      
	
    • -5 wrong return type (per method)
      • 
	
    • -5 wrong number of parameters
      • 
	
    • -5 wrong type of parameters
      • 
	
    • -5 not declared as public and static
      • 
	
    • -5 incorrect printing of results (includes NOT printing results)
      • 
	
    • -5 for not calling any of the methods in main()
      
 
      • 
	
    • 
	
	
  • 25 points:  public static void printEvenNumbers(int n)
	
    (max -25)
	
      
		
    • -10 doesn't use loops
      • 
		
    • -3 loop initialization incorrect
      • 
		
    • -3 loop condition incorrect
      • 
		
    • -3 loop increment performed incorrectly
      • 
		
    • -5 calculation for even numbers incorrect
      • 
	

    • 
	
  • 25 points:  public static void printPowersOfTwo(int n)
	
    (max -25) 
	
      
		
    • -10 doesn't use loops
      • 
		
    • -15 uses Math.pow
      • 
		
    • -3 loop initialization incorrect
      • 
		
    • -3 loop condition incorrect
      • 
		
    • -3 loop increment performed incorrectly
      • 
		
    • -5 calculation for powers of two incorrect
      • 
	
    
	
    • 
	
  • 15 points:  public static void printPrimeNumbers(int n) 
    (max -15)
	
      
		
    • -10 doesn't use loops
      • 
		
    • -15 uses some JDK primality testing methods (e.g. 
		BigInteger.isProbablePrime(), etc. )
      • 
		
    • -3 outer loop initialization incorrect
      • 
		
    • -3 outer loop test condition incorrect.  Doesn't properly count the number of primes
      • 
		
    • -3 outer loop increment performed incorrectly
      • 
		
    • -3 for inner or outer loop missing
      • 
		
    • -3 inner loop initialization incorrect
      • 
		
    • -3 inner loop test condition incorrect
      • 
		
    • -3 inner loop increment performed incorrectly
      • 
		
    • No point deduction if the parameter is int, 
		but they print results as doubles
      • 
		
    • -5 calculation for prime numbers incorrect. Examples include
		
        
		
      • Reversing condition for determining prime (prints out numbers that have factors instead)
        • 
		
      • Uses continue instead of break
        • 
		
      
		
      • 
	
    • 


	
 
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