Sort numbers using arrays in Shell Script

By: Vivek G Emailed: 1644 times Printed: 2110 times    

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This shell script demonstrates the use of arrays with a script that sorts 5 numbers and prints the sorted numbers.

#
# Declare the array of 5 subscripts to hold 5 numbers
#
declare nos[5]=(4 -1 2 66 10)

#
# Prints the number befor sorting
#
echo "Original Numbers in array:"
for (( i = 0; i <= 4; i++ ))
do
  echo ${nos[$i]}
done

#
# Now do the Sorting of numbers
#

for (( i = 0; i <= 4 ; i++ ))
do
   for (( j = $i; j <= 4; j++ ))
   do
      if [ ${nos[$i]} -gt ${nos[$j]}  ]; then
           t=${nos[$i]}
           nos[$i]=${nos[$j]}
           nos[$j]=$t
      fi
   done
done

#
# Print the sorted number
# 
echo -e "\nSorted Numbers in Ascending Order:"
for (( i=0; i <= 4; i++ )) 
do
  echo ${nos[$i]}
done

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Comments(5)


1. View Comment

how to declare Array ?? in LINUX
i m try this same code 4 run but that's not work
and
how to get input form user in Array for shell script in LINUX


View Tutorial          By: Chand at 2012-03-18 06:47:09
2. View Comment

its very nice

View Tutorial          By: keerthi at 2012-06-28 17:04:36
3. View Comment

hii
i have

two varirables

var=4 5 6......n
var1=3 4 5.....n

i want output like this

4-3=2
5-4=1
6-5=1
etc

please give me solution early

this is my project requirement


View Tutorial          By: niranjan at 2012-07-31 06:47:36
4. View Comment

does not work.

output:
./number2: line 4: nos[5]: cannot assign list to array member
Original Numbers in array:

Sorted Numbers in Ascending Order:


View Tutorial          By: praveen at 2012-08-30 19:04:20
5. View Comment

This will give the output check it out

nos=( 2 4 1 30 23 )
echo "Original Numbers in array:"
for ((i = 0; i <= 4 ; i++ ))
do

echo " ${nos[i]} "
done


for (( i = 0; i <= 4 ; i++ ))
do
for (( j = $i; j <= 4; j++ ))
do
if [ ${nos[i]} -gt ${nos[j]} ]; then
t=${nos[i]}
nos[i]=${nos[j]}
nos[j]=$t
fi
done
done

echo -e "\nSorted Numbers in Ascending Order:"
for (( i=0; i <= 4; i++ ))
do
echo "${nos[i]}"
done


View Tutorial          By: shruthi at 2013-01-18 06:00:08

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