Write A Shell Script For Selection Sort

Shell Script:

clear
echo -n "enter number of elements:"
read n
echo enter elements
for((i=1;i<=$n;i++))
do
echo -n "enter element $i :"
read arr[$i]
done
echo unsorted array
for((i=1;i<=$n;i++))
do
echo -n "  ${arr[$i]}"
done
echo

for((i=1;i<$n;i++))
do
 for((j=$i+1;j<=$n;j++))
 do
  if [ ${arr[$i]} -gt ${arr[$j]} ] 
  then
   temp=${arr[$i]}
   arr[$i]=${arr[$j]}
   arr[$j]=$temp
  fi
 done
done

echo sorted array
for((i=1;i<=$n;i++))
do
echo -n "  ${arr[$i]}"
done
echo

OUTPUT:

1)[admin@localhost ~]$ sh selection.sh 
enter number of elements:5
enter elements
enter element 1 :5
enter element 2 :4
enter element 3 :3
enter element 4 :2
enter element 5 :1
unsorted array
  5  4  3  2  1
sorted array
  1  2  3  4  5

2)[admin@localhost ~]$ sh selection.sh 
enter number of elements:5
enter elements
enter element 1 :1
enter element 2 :4
enter element 3 :3
enter element 4 :2 
enter element 5 :2
unsorted array
  1  4  3  2  2
sorted array
  1  2  2  3  4