CSE110 Principles of Programming with Java Lecture 31: Bidimensional Arrays Javier Gonzalez-Sanchez [email protected] javiergs.engineering.asu.edu Office Hours: By appointment

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 2 One-dimensional Array • A one-dimensional array stores a list of elements 0 0 0 0 0 0 0 1 2 3 4 5 int []array = new int [6] array

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 3 One-dimensional Array • A two-dimensional array can be thought of as a table of elements, with rows and columns 0 1 2 3 4 5 int [][]array = new int [6][3] array 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 4 Two-dimensional Array • A two-dimensional array is an array of arrays • A two-dimensional array is declared by specifying the size of each dimension separately int[][] scores = new int[12][50]; • A array element is referenced using two index values value = scores[3][6]

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 5 Two-dimensional Array The array stored in one row can be specified using one index

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 6 Example 1

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 7 Example 2

Javier Gonzalez-Sanchez | CSE110 | Summer 2017 | 8 Reference Section 6.7 page 282

CSE110 - Principles of Programming Javier Gonzalez-Sanchez [email protected] Summer 2017 Disclaimer. These slides can only be used as study material for the class CSE110 at ASU. They cannot be distributed or used for another purpose.