final-cheat-sheet.md

Final Cheat Sheet

You will be provided a cheat sheet with the information below on your final. If you are interested in the actual format of the document, check out last year's version.

Construction Examples

int[] data = new int[10];
Random r = new Random();
ArrayList<String>, ArrayList<Integer>

Math Method	Description
Math.abs(value)	absolute value
Math.min(v1, v2)	smaller of two values
Math.max(v1, v2)	larger of two values
Math.round(value)	nearest whole number
Math.pow(b, e)	base to the exponent power

Scanner Method	Description
nextInt()	reads/returns token as int
nextDouble()	reads/returns token as double
next()	reads/returns token as String
nextLine()	reads/returns line as String
hasNextInt()	tests if reading an int will succeed
hasNextDouble()	tests if reading a double will succeed
hasNext()	tests if reading a token as a String will succeed
hasNextLine()	tests if reading a line as a String will succeed

Random Method	Description
nextInt(max)	random integer from 0 to max-1

String Method	Description
contains(str)	true if this string contains the other's characters inside it
endsWith(str), startsWith(str)	true if this string starts/ends with the other's characters
equals(str)	true if this string is the same as str
equalsIgnoreCase(str)	true if this string is the same as str, ignoring capitalization
indexOf(str)	index in this string where given string begins (-1 if not found)
length()	number of characters in this string
substring(i, j)	characters in this string from index i (inclusive) to j (exclusive)
substring(i)	characters in this string from index i (inclusive) to end
toLowerCase(), toUpperCase()	a new string with all lowercase or uppercase letters
charAt(i)	returns char at index i

Arraylist Method	Description
add(value)	appends value at end of list
add(index, value)	inserts given value just before the given index, shifting subsequent values to the right
get(index)	returns the value at given index
remove(index)	removes/returns value at given index, shifting subsequent values to the left
set(index, value)	replaces value at given index with given value
size()	returns the number of elements in list

Critter classes

public class name extends Critter {
  // fields/constructor

  public Color getColor() {
      // statement(s) that return a Color (e.g., Color.RED, Color.BLUE, Color.GREEN)
  }

  public Action getMove(CritterInfo info) {
      // statement(s) that return Action.INFECT, Action.HOP, Action.RIGHT, or Action.LEFT
  }

  public String toString() {
      // statement(s) that return a String;
  }
}

CritterInfo Method	Description
getFront(), getBack(), getLeft(), getRight()	returns one of Neighbor.WALL, Neighbor.EMPTY, Neighbor.SAME, Neighbor.OTHER
getDirection()	returns one of Direction.NORTH, Direction.SOUTH, Direction.EAST, Direction.WEST