i've been searching how to sort name alphabetically using array in pl sql but i found nothing. can you guys please help me what should i do? i'm a beginner programmer

```
-- MENGURUTKAN NAMA 
DECLARE
    TYPE SISWA IS
        TABLE OF VARCHAR2(25) INDEX BY BINARY_INTEGER;
    NAMA SISWA;
    I INTEGER;
BEGIN
    NAMA(1) := 'Arista Destriana';
    NAMA(2) := 'Yandri Gunawan';
    NAMA(3) := 'Herry Wahyudinata';
    NAMA(4) := 'Budi Raharja';

    DBMS_OUTPUT.PUT_LINE('SEBELUM DIURUTKAN : ');
    FOR I IN 1..4 LOOP
        DBMS_OUTPUT.PUT_LINE(NAMA(I));
    END LOOP;
    --PROSES PENGURUTAN

END;
/

```