StringBuilder str = new StringBuilder("<urStr>");

r.nextInt(39)

Random.nextInt(upToButNotIncl)

HashMap<String, Integer>; put get containsKey keySet(=k ONLY)

for (String city : cityNTemps.keySet())

HashMap<String, Integer> map = new HashMap<>();

HashMap<String, Integer>; put get containsKey keySet(= k-v pair)

Create 10. Array from list

Create 9b. Sum of array elements

String[] names = new String[16]; arr.length; list.size(); str.length();

newList.addAll(list1); Collections.sort(newList)

"" + someInt; Integer.parseInt(str)

Create 6B. Create a list

ArrayList<String> list = new ArrayList<>();

Collections.min/max, THEN go through list to find secondSmallest

eg change order

get, remove

ArrayList<Integer> lista = new ArrayList<>(); for (int l : pa) lista.add(l);

someMethod(ArrayList<Integer> list)

GradingIssue

equals

equals

Create 1b. Calculator

obj1.equals(obj2)

ArrayList REFERENCE TYPE AND ENVELOPE CLASS

String REFERENCE TYPE

Update Week 2: Methods, strings and lists/22. Letter pyramid

Create 22. Letter pyramid

Rename Week 1: Types, condition clauses and loops/4. Match expressions and results to Week 1: Types, condition clauses and loops/4. Match expressions and results AND DATATYPE

Create 21. Clean up string

Create 20. Doubles

Create 19. Count shorter strings

Create 18. Largest element

Create 17b. Count positive and negative elements

Create 17a List length and iterating

Create 16. Add numbers to list

Create 15b. Match class name and element

Create 15a Lists

Create 14. Remove vowels

Create 13B. Fix report card

Create 13a. string methods

Create 12b. Letter triangle

Create 12a. Substrings

Create 11. From end to start

Create 10b. Middle character or nothing

Create 10a Strings

Create 9. Leap years, part 2 (two-part exercise)

Create 8. Return winnings

Create 7. Factorial

Create 6b. Return the middle number