Fun to see different techniques from different people. I have also
played with this interesting problem. In my environment, the following
implementations seem to be the fastest.
f21b() { local -a "arr=('\${1:'{0..$((${#1}-1))}':1}')";
arr=("${arr[@]@P}"); } # Any strings
f31() { local arr i=${#1}
On 2021/08/24 05:06, Greg Wooledge wrote:
Looks like the efficiency of "read -ra" vs. a shell loop just about makes
up for the system calls used for the here string (f6 and f7 are almost
tied in overall speed, with f6 just a *tiny* bit faster). Good to know.
If you set your TIMEFORM
On Tue, Aug 24, 2021 at 04:16:46PM +0200, Léa Gris wrote:
> string2array() {
> # Splits the string's characters into the array
> # $1: The input string
> # $2: The output array name
> [[ "$1" =~ ${1//?/(.)} ]]
> # shellcheck disable=SC2178 # shellcheck broken nameref type check
> local
On Tue, Aug 24, 2021 at 04:16:46PM +0200, Léa Gris wrote:
> Le 24/08/2021 à 15:09, Mike Jonkmans écrivait :
> > This seems to be the fastest:
> > f12 () { [[ "$1" =~ ${1//?/(.)} ]]; local arr=( "${BASH_REMATCH[@]:1}" ); }
>
> Awesome Mike, would you like to add this answer to SO?
>
> It would be
On Tue, Aug 24, 2021 at 09:24:35AM -0400, Greg Wooledge wrote:
> On Tue, Aug 24, 2021 at 03:09:55PM +0200, Mike Jonkmans wrote:
> > This seems to be the fastest:
> > f12 () { [[ "$1" =~ ${1//?/(.)} ]]; local arr=( "${BASH_REMATCH[@]:1}" ); }
> > time for ((i=1; i<=1; i++)); do f0 682390; done
>
Le 24/08/2021 à 15:09, Mike Jonkmans écrivait :
This seems to be the fastest:
f12 () { [[ "$1" =~ ${1//?/(.)} ]]; local arr=( "${BASH_REMATCH[@]:1}" ); }
time for ((i=1; i<=1; i++)); do f0 682390; done
real0m0,296s
user0m0,296s
sys 0m0,000s
Awesome Mike, would you like to add th
On Tue, Aug 24, 2021 at 03:09:55PM +0200, Mike Jonkmans wrote:
> This seems to be the fastest:
> f12 () { [[ "$1" =~ ${1//?/(.)} ]]; local arr=( "${BASH_REMATCH[@]:1}" ); }
> time for ((i=1; i<=1; i++)); do f0 682390; done
> real0m0,296s
> user0m0,296s
> sys 0m0,000s
Your CPU is a
On Tue, Aug 24, 2021 at 02:15:46PM +0200, Léa Gris wrote:
> Le 24/08/2021 à 14:06, Greg Wooledge écrivait :
>
> > unicorn:~$ f6() { local i n=${#1} arr; for ((i=0; i > arr[i]="${1:i:1}"; done; }
> > unicorn:~$ time for ((i=1; i<=1; i++)); do f6 682390; done
> > real 0.381 user 0.381 sys 0.00
Le 24/08/2021 à 14:06, Greg Wooledge écrivait :
unicorn:~$ f6() { local i n=${#1} arr; for ((i=0; i
See my featured version to also capture space and newlines:
https://stackoverflow.com/a/68907322/7939871
--
Léa Gris
On Tue, Aug 24, 2021 at 01:31:35PM +0200, Léa Gris wrote:
> Le 23/08/2021 à 21:41, L A Walsh écrivait :
> >
> >
> > On 2021/08/23 12:10, Greg Wooledge wrote:
> > > On Mon, Aug 23, 2021 at 11:36:52AM -0700, L A Walsh wrote:
> > > > Starting with a number N, is there
> > > > an easy way to print it
Le 23/08/2021 à 21:41, L A Walsh écrivait :
On 2021/08/23 12:10, Greg Wooledge wrote:
On Mon, Aug 23, 2021 at 11:36:52AM -0700, L A Walsh wrote:
Starting with a number N, is there
an easy way to print its digits into an array?
n=988421
# Need extglob for the replacement pattern
shopt -s ex
On Mon, Aug 23, 2021 at 12:41:58PM -0700, L A Walsh wrote:
>
>
> On 2021/08/23 12:10, Greg Wooledge wrote:
> > On Mon, Aug 23, 2021 at 11:36:52AM -0700, L A Walsh wrote:
> > > Starting with a number N, is there
> > > an easy way to print its digits into an array?
> >
> > "Easy"? Or "efficient"?
On 2021/08/23 12:10, Greg Wooledge wrote:
On Mon, Aug 23, 2021 at 11:36:52AM -0700, L A Walsh wrote:
Starting with a number N, is there
an easy way to print its digits into an array?
"Easy"? Or "efficient"? Your subject header says one, but your body
says the other.
Efficient,
On 8/23/21 3:13 PM, Oğuz wrote:
> 23 Ağustos 2021 Pazartesi tarihinde L A Walsh yazdı:
>
>> Starting with a number N, is there
>> an easy way to print its digits into an array?
>> I came up with a few ways, but thought this
>> would be nice (with '\1' or '$1' being what was matched
>> in the 1st
23 Ağustos 2021 Pazartesi tarihinde L A Walsh yazdı:
> Starting with a number N, is there
> an easy way to print its digits into an array?
> I came up with a few ways, but thought this
> would be nice (with '\1' or '$1' being what was matched
> in the 1st part), this could be statement:
If memo
On Mon, Aug 23, 2021 at 11:36:52AM -0700, L A Walsh wrote:
> Starting with a number N, is there
> an easy way to print its digits into an array?
"Easy"? Or "efficient"? Your subject header says one, but your body
says the other.
> arr=(${N//[0-9]/\1 })
> arr=(${N//[0-9]/$1 })
Obviously those
Starting with a number N, is there
an easy way to print its digits into an array?
I came up with a few ways, but thought this
would be nice (with '\1' or '$1' being what was matched
in the 1st part), this could be statement:
arr=(${N//[0-9]/\1 })
or
arr=(${N//[0-9]/$1 })
Instead of using loops
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