can you get array index?--b[4]...index=4?? 1

[qb828]

hello!
how are you?
i must forgot..is there a method to get a index of array?
say if array[3], can it tell me index is 3?
i need a way to get that integer inside of []...


thanks

Q

 

[CatWeasel]

There is a easy way to get the length of an array: use length. It will return the length of the array.

Greetings,
Steven.

 

[qb828]

thanks steven..
have Question about index array.
length gives integer of how many array there are.
i want to acess what a current array index is.

say int array[]=new int[3];
int c=array.length; //gives c=3, array size
array[2]; i want to acess index 2

can you do that?

Q

 

[CatWeasel]

That depends on how you access it. To control the index of the array, you can use it within a for-loop, like

for(int index = 0; index < array.length; index++)
{
//do something with array[index];
}


But if you supply for example array[2] to a function, you'll loose the array, but get the primitive of the array back. So, in your example you'll only get an int, and have lost the position within the array.

Hope this helps,
Steven.

 

[CatWeasel]

Before i forget, if you want to manipulate the array, you also can look to java.util.Arrays.
This class contains some functions for manipulating mainly primitive arrays.

Greetings,
Steven.