Computer Science Review SASHA P KEVIN L Arrays

Computer Science Review SASHA. P & KEVIN. L

Arrays! Arrays are used to make multiple GUI and variables at once. An example would be: String ^ Type [] s = new String [X]; ^ Name ^ # of value

Example of how it is used. //Declare the array String [ ] days_week; days_week = new String [7] ; //Assign data to each box/slot of the defined array days_week [0] = “Monday” ; days_week [1] = “Tuesday” ; days_week [2] = “Wednesday” ; days_week [3] = “Thursday” ; days_week [4] = “Friday” ; days_week [5] = “Saturday” ; days_week [6] = “Sunday” ; System. out. print. In(days_week[1] + “ we have Java class. “) ;

Two Dimensional Arrays! Similar to normal arrays, two dimensional arrays use boxes arranged in rows and columns to store data. In this case require 2 numbers, a coordinate pair, to identify each slot/box instead of one to allow the programmer to have more elaborate data storage. This allows accuracy to the program whilst making the program in a gridlike formation. An example would be: String [ ][ ] s = new String [X][Y]; ^ ^ Type Name ^ ^ # of coordinates

How it works Column 1 Column 2 Column 3 Column 4 Row 1 X[0][0] X[0][1] X[0][2] X[0][3] Row 2 X[1][0] X[1][1] X[1][2] X[1][3] Row 3 X[2][0] X[2][1] X[2][2] X[2][3]

How to create 2 dimensional arrays on practice