###
CSC 222: Object-Oriented Programming

Spring 2012

Test 2 Review

TEST 1 MATERIAL
Object-oriented design
highly cohesive, loosely coupled
example: dot race, text vs. visual views
Model-View-Controller pattern
example: Hunt the Wumpus, text vs. GUI views
BlueJ vs. netBeans IDE's
Java features
data structures
ArrayLists vs. arrays
parallel lists vs. lists of structured objects
exception handling
throwing an exception vs. try-catch
formatted output
System.out.format, format string (e.g., %8s, %-8s, %.2f, %6.2f)
enumerated types
enum, ENUM_TYPE.VALUE (e.g., CaveContents.EMPTY)
interfaces
List, Comparable
Searching and efficiency
sequential search vs. binary search
worst case vs. average case vs. best case performance
timing performance, System.currentTimeMillis
Collections.binarySearch
application: Dictionary class, spell checking
Big-Oh notation
sequential search is O(N), binary search is O(log N)
rate-of-growth behavior
Sorting and recursion
recursion
base case(s), recursive case(s)
avoiding infinite recursion & redundancies
insertion sort vs. selection sort vs. merge sort
worst case vs. average case vs. best case performance
implementing an O(N) merge
Collections.sort
application: Dictionary class, lazy add approach
Big-Oh analysis
insertion & selection sorts are O(N^2), merge sort is O(N log N)
recursive analysis
formal definition of Big-Oh