delete parts of an array

[Apodysophilia]

 int[] ary ={6,2,3,4,5,8,9,1,2,12}

how would i delete something like the 3 cell, or any cell?

[EscapeCharacter]

you cannot do what you are asking arrays are not dynamic, you would have to change the array a list of pointers something like

struct node{
        int num;
        struct node *next;
};

then have a delete function that would go like this

void delete(int place, struct node *list){
        int count = 0;
        struct node *tmp = list;
        struct node *tmp2;
        for(count; count < place; count++){
                tmp = tmp->next;
        }
        tmp2 = tmp;
        tmp2 = tmp2->next;
        tmp->next = tmp2->next;
        free(tmp2);
}

well something like that it looks a little off to me but you should get the gist.

edit: disregard this post, i thought this was in the c/c++ section

[Apodysophilia]

Originally posted by EscapeCharacter
edit: disregard this post, i thought this was in the c/c++ section

ok, well anyone else? can i even do that?

[ender]

Sure, you can do it, I looked into the Java API documentation, and even though you can't modify the size of the array that you are deleting from, you can just shift all the elements so you have an empty space at the end. Like so:

int[] ary = { 1, 2, 3, 4, 5 };
int elementIndexToDelete = 2;

for (int i = elementIndexToDelete; i < ary.length - 1; i++) {
   ary[i] = ary[i+1];
}

ary[ary.length - 1] = 0;

This would make the 3 dissapear. I'm not sure about the empty space at the end though, don't know if you can get rid of that somehow. I suppose you could just keep around a local variable called size to let you know how big it really is...because length won't change.

For the dynamic capability, Java includes something called Vector, look into it, it allows stuff to be removed from it, but you might have to initialize it differently than you do. It is similiar to the STL in C++ and is a collection framework.

The Documentation

This is my best guess, hope it helps.

Ted Morse

[Apodysophilia]

thanks ender that worked great