need shell script to sort numbers including decimal numbers [duplicate]

Question

shell script to sort numbers including decimal numbers

I tried the following script and list with decimal number not working.

arr=(10 8 -20 100 1.2)

echo "Array in original order" echo ${arr[*]}

for ((i = 0; i<5; i++)) do

for((j = 0; j<5-i-1; j++)) 
do

    if [ ${arr[j]} -gt ${arr[$((j+1))]} ] 
    then
         
        temp=${arr[j]} 
        arr[$j]=${arr[$((j+1))]} 
        arr[$((j+1))]=$temp 
    fi
done
done
echo "Array in sorted order :" echo ${arr[*]}

OUTPUT:

Array in original order 10 8 -20 100 1.2 ./sort.sh: line 17: [: 1.2: integer expression expected Array in sorted order : -20 8 10 100 1.2

i want the list to be as follow:

-20 1.2 8 10 100

please see this thread which has the answer: stackoverflow.com/questions/9939546/… — Krishna Chaurasia
– Krishna Chaurasia, Commented Feb 5, 2021 at 8:18
Is this a homework question to implement a sorting algorithm, or are external binaries allowed (such as sort) — kvantour
– kvantour, Commented Feb 5, 2021 at 11:39
@kvantour : Maybe we have some misunderstanding here, but for all that I know, POSIX shell neither has arrays nor floating point arithmetic. If you have different information, I would appreciate if you can provide me some link on that matter. — user1934428
– user1934428, Commented Feb 6, 2021 at 17:32
@user1934428 ZSH does have knowledge of sorting. Have a look at the glob-qualifiers o and O to sort arrays. — kvantour
– kvantour, Commented Feb 8, 2021 at 8:24

KamilCuk · Accepted Answer · 2021-02-05 09:16:13Z

i want the list to be as follow: -20 1.2 8 10 100

Output numbers one per line.
Sort
Join with space

$ arr=(10 8 -20 100 1.2)
$ printf "%s\n" "${arr[@]}" | sort -g | paste -sd' '
-20 1.2 8 10 100

Don't reimplement sort using shell - it's going to be incredibly slow. The -g option to sort may not be available everywhere - it's for sorting floating point numbers.

[: 1.2: integer expression expected Array

The [ command handles integers only. 1.2 has a comma, [ can't handle it. Use another tool. Preferable python.

${arr[$((j+1))]}

No need to use $(( - stuff inside [ is already expanded arithmetically. Just ${arr[j+1]}.

j<5-i-1

is strange condition. When i=4 then it's j<0 and loop will not run at all. Just iterate from i instead of up to i - ((j=i;j<5;++j)).

echo "Array in sorted order :" echo ${arr[*]}

Will print echo to output. Just echo "Array in sorted order : ${arr[*]}" or echo "Array in sorted order :" "${arr[@]}"

Collectives™ on Stack Overflow

need shell script to sort numbers including decimal numbers [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related