array

                                        ARRAY

array adalah sebuah struktur data yang terdiri atas banyak variabel dengan tipe data sama, dimana masing-masing elemen variabel mempunyai nilai indeks.

Setiap elemen array mampu untuk menyimpan satu jenis data (yaitu: variabel).

Contoh:

public class array {

    public static void main (String []arg) {

        char [] namaku;

        namaku = new char [5];

        namaku[0]= 'o';

        namaku[1]= 'b';

        namaku[2]= 'i';

        namaku[3]= 'e';

        namaku[4]= 'n';

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

            System.out.println(namaku[i]);

           

        }  

        }

    }

run:

o

b

i

e

n

BUILD SUCCESSFUL (total time: 0 seconds)

Array dalam Array

Contoh :

public class dalamarray {

  public static void main ( String [] arg) {

      int angka [][] = {{2,1,3},{0},{1,2,3},{0,1}};

      System.out.println(angka[2][2]);

  } 

}

run:

3

BUILD SUCCESSFUL (total time: 0 seconds)

Percobaan:

public class cobaarray {

    public static void main ( String [] arg) {

        int umur[]= {4,3,2};

        double ratarata=0;

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

        ratarata=ratarata+umur[i];

        System.out.println("jumlah siswa kelas strawberry = " +umur[i]);

        }

        ratarata=ratarata/umur.length;

        System.out.println("rata-rata usia kelas strawberry =" +ratarata);

    }

   

}

run:

jumlah siswa kelas strawberry = 4

jumlah siswa kelas strawberry = 3

jumlah siswa kelas strawberry = 2

rata-rata usia kelas strawberry =3.0

BUILD SUCCESSFUL (total time: 0 seconds)

Untuk mengetahui jumlah :

public class cobaarray {

    public static void main ( String [] arg) {

        int umur[]= {4,3,2};

        double ratarata=0;

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

        ratarata=ratarata+umur[i];

        System.out.println("jumlah siswa kelas strawberry = " +umur.length);

        }

        ratarata=ratarata/umur.length;

        System.out.println("rata-rata usia kelas strawberry =" +ratarata);

    }

   

}

run:

jumlah siswa kelas strawberry = 3

jumlah siswa kelas strawberry = 3

jumlah siswa kelas strawberry = 3

rata-rata usia kelas strawberry =3.0

BUILD SUCCESSFUL (total time: 0 seconds)

Percobaan 3 :

public class cobaarray {

    public static void main ( String [] arg) {

        int [][][] arr3 = {{{10,20,30},{40,50,60}},

                {{11,21,31},{41,51,61}},

                {{12,22,32},{42,52,62}}};

        System.out.println("Nilai arr3 [0] : " + arr3 [0][0][0]);

        System.out.println("Nilai arr3 [0] : " + arr3 [0][0][1]);

        System.out.println("Nilai arr3 [0] : " + arr3 [0][0][2]);

        System.out.println("Nilai arr3 [0] : " + arr3 [0][1][0]);

        System.out.println("Nilai arr3 [0] : " + arr3 [0][1][1]);

        System.out.println("Nilai arr3 [0] : " + arr3 [0][1][2]);

        System.out.println("Nilai arr3 [1] : " + arr3 [1][0][0]);

        System.out.println("Nilai arr3 [1] : " + arr3 [1][0][1]);

        System.out.println("Nilai arr3 [1] : " + arr3 [1][0][2]);

        System.out.println("Nilai arr3 [1] : " + arr3 [1][1][0]);

        System.out.println("Nilai arr3 [1] : " + arr3 [1][1][1]);

        System.out.println("Nilai arr3 [1] : " + arr3 [1][1][2]);

        System.out.println("Nilai arr3 [2] : " + arr3 [2][0][0]);

        System.out.println("Nilai arr3 [2] : " + arr3 [2][0][1]);

        System.out.println("Nilai arr3 [2] : " + arr3 [2][0][2]);

        System.out.println("Nilai arr3 [2] : " + arr3 [2][1][0]);

        System.out.println("Nilai arr3 [2] : " + arr3 [2][1][2]);

          }

   }

run:

Nilai arr3 [0] : 10

Nilai arr3 [0] : 20

Nilai arr3 [0] : 30

Nilai arr3 [0] : 40

Nilai arr3 [0] : 50

Nilai arr3 [0] : 60

Nilai arr3 [1] : 11

Nilai arr3 [1] : 21

Nilai arr3 [1] : 31

Nilai arr3 [1] : 41

Nilai arr3 [1] : 51

Nilai arr3 [1] : 61

Nilai arr3 [2] : 12

Nilai arr3 [2] : 22

Nilai arr3 [2] : 32

Nilai arr3 [2] : 42

Nilai arr3 [2] : 62

BUILD SUCCESSFUL (total time: 1 second)