APCSPA

REVIEW

Create an Array

type[] array name = { values, values};

Find Array length

arrayname.length;

Get an index of array

arrayname[index#];

set Array index

arrayname[index#]=value;

Traverse through Array

for (int i = 0; i<arrayname.length; i++)

{

// action or code

}

Create ArrayList

ArrayList<Type> array name= new ArrayList<type>();

Add or Remove in Arraylist

Add: arraylist.add(value);

Remove: arraylist.remove(index #);

Find Arraylist size

arraylist.size();

Set Arraylist index

arraylist(index#, value);

Get Arraylist index

arraylist.get(index#);

Traverse through Arraylist

for(int i = 0; i<arraylist.size(); i++)

Comparing Strings

String str1= "hello";

String str2= "hello";

str1.equalsl (str2)

☆ .equals() ☆

Math in Coding

Math.abs(x)

Math.max(x,y)

Math.min(x,y)

Math.pow(x,y)

Math.random()