Time complexity for java ArrayList -


What is the array list or array in Java? What is the complexity of time for the obtained process, is it O (n) or O (1) ?

Java has an ArrayList a list Which is supported by any array . get (index) method is an ongoing time, O (1) , operation

public e-mail (int index) {range check (index ); Return (E) element data [index]; }

Actually, it returns a value directly from the backing array ( Renjak (index) ) is also a static time)


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