Array (2) Lecture Week 9

Moga Memperoleh Keberkatan Ramadhan Berterusan Array Review Array is a structure to store values of the same type The values can be reuse, manipulate and change Use to store similar entity with different values

Moga Memperoleh Keberkatan Ramadhan Berterusan What is the output? int size = 5; int [ ] num = { 2,4,6,8,10}; for (int i=0; i < size; i++) num [i] *= 3; System.out.println(“New list”); for (int i=0; i < size; i++) System.out.print (num[i] + “ “); System.out.println();

Moga Memperoleh Keberkatan Ramadhan Berterusan Array Revisited Using Array With Methods Using Array as Objects Searching an Array 2D Array Multidimensional Array

Moga Memperoleh Keberkatan Ramadhan Berterusan Using Array With Methods Sending an element of an array Example 2 Sending an array Example 3 Returning an array Example 4

Using Array of Objects Moga Memperoleh Keberkatan Ramadhan Berterusan Example 5

Searching an Array Useful in looking for element in an array Example 6 Moga Memperoleh Keberkatan Ramadhan Berterusan

2D Array Java support 2 dimensional array – similar structure with matrix or table E.g int [] [] matrix = new int [3] [3]; By default numerical array will store value 0; eg. matrix[0][0] = 1; matrix[1][1] = 1; matrix[2][2] = 1; Moga Memperoleh Keberkatan Ramadhan Berterusan | | | | | | for (int i=0; I < matrix.length; i++) for (int j=0; j <matrix[i].length; j++) if (i == j) matrix[i][j] =1;

Multidimensional Array Can have more than 2 dimension. residential college has many levels At each level has many rooms. E.g accomodation [1][3][12] could be referring accomodation at college[1] at level 3 room no. 12. Moga Memperoleh Keberkatan Ramadhan Berterusan