[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: how to make a matrix with all combinations of digits efficiently
From: |
Jean Dubois |
Subject: |
Re: how to make a matrix with all combinations of digits efficiently |
Date: |
Sat, 30 Dec 2017 17:56:23 +0100 |
2017-12-29 19:13 GMT+01:00 Juan Pablo Carbajal <address@hidden>:
>> in fact I need decomp(10,10)
>
> The issue with memory or index size are rather unavoidable. Do you
> really need all this?
> What is your intended use of counter? I am pretty sure you do not neet
> to allocate nor have simultaneously such an enormous amount of
> numbers.
> Note that my solution works even for a single number "i", that means
> you could call the function to decompose a given number everytime you
> need a results, i.e.
>
> function digits = dec2digit (num, base = 10)
> nc = ceil (log (num) / log (base));
> digits = mod( floor (num ./ base.^[(nc-1):-1:0]), base);
> endfunction
>
> example
>
> dec2digit (537)
> ans =
>
> 5 3 7
Dear Juan,
I just saw that dec2digit(100) produces 0 0 in stead of 1 0 0, so I
changed the function as follows
function digits = dec2digit (num, nc, base = 10)
%nc = ceil (log (num) / log (base));
digits=mod(floor(num./base.^[(nc-1):-1:0]), base);
kind regards
- how to make a matrix with all combinations of digits efficiently, Jean Dubois, 2017/12/28
- Re: how to make a matrix with all combinations of digits efficiently, Juan Pablo Carbajal, 2017/12/28
- Re: how to make a matrix with all combinations of digits efficiently, Jean Dubois, 2017/12/29
- Re: how to make a matrix with all combinations of digits efficiently, Francesco PotortÃ¬, 2017/12/29
- Re: how to make a matrix with all combinations of digits efficiently, Jean Dubois, 2017/12/29
- Re: how to make a matrix with all combinations of digits efficiently, Francesco PotortÃ¬, 2017/12/29
- Re: how to make a matrix with all combinations of digits efficiently, Juan Pablo Carbajal, 2017/12/29
- Re: how to make a matrix with all combinations of digits efficiently, Jean Dubois, 2017/12/30
- Re: how to make a matrix with all combinations of digits efficiently,
Jean Dubois <=
- Re: how to make a matrix with all combinations of digits efficiently, Juan Pablo Carbajal, 2017/12/30
- Re: how to make a matrix with all combinations of digits efficiently, Juan Pablo Carbajal, 2017/12/30