Re: [bug-gawk] How to mimic inserting an element to a vector?

[arnold]

Your way seems to work. I would probably write it like this
(untested):

function insert(a, ind, val,    i, l)
{
        l = length(a)
        for (i = l; i >= ind; i--)
                a[i+1] = a[i]
        
        a[ind] = val
}

Arnold

Peng Yu <address@hidden> wrote:

> Hi,
>
> I use the following code to mimic inserting an element to a vector
> (i.e, the keys are 1,2,...). But it is a little cumbersome. Is there
> any implement that is better?
>
> function insert(a, i, v) {
>   for(k in a) {
>     if(k>=i) {
>       a[k+1] = a[k]
>     }
>   }
>   a[i] = v
> }
>
> BEGIN {
>   for(i=1;i<=3;++i) {
>     a[i] = 100 + i
>   }
>   PROCINFO["sorted_in"] = "@ind_num_desc"
>   insert(a, 2, 2)
>
>   PROCINFO["sorted_in"] = "@ind_num_asc"
>   for(k in a) {
>     print k, a[k]
>   }
> }
>
> -- 
> Regards,
> Peng