# Re: [Jprogramming] Quora problem

```my solution

f1=:*./@:* NB. all non-zero```
```
f2=:  3=#@~. NB. no duplication

g=: 10 10 10#: i.1000

h=:  I.(f1 *. f2)"1 g

\$h
504

10 {. h
123 124 125 126 127 128 129 132 134 135

On Aug 12, 2017 5:17 PM, "Skip Cave" <s...@caveconsulting.com> wrote:

> How can I use J to generate all the possible 3-digit integers that can be
> constructed using the digits 1-9 (no zeros), with no repeated digits in
> each integer? The sequence starts with 123 (smallest) and goes to 987
> (largest). Here's the first few integers in the sequence:
>
> 123 124 125 126 127 128 129 132 134 135 136 137 138 139 142 143 145 146 147
> 148 149 152 153 154 156 157 158 159 162......
>
> Skip
>
> Skip Cave
> Cave Consulting LLC
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm```