Maximum minimum

#!/bin/bash
echo "enter number of element"
read n

for((i=0;i<n;i++))
do
echo " enter $((i+1)) number"
read nos[$i]
done

echo "entered numbers"
for((i=0;i<n;i++))
do
echo ${nos[$i]}
done

minimum=${nos[0]}
maximum=${nos[0]}
for((i=0;i<n;i++))
do

if [ ${nos[$i]} -lt $minimum ]; then
minimum=${nos[$i]}

elif [ ${nos[$i]} -gt $maximum ]; then
maximum=${nos[$i]}
fi
done
echo "Minimum number in an array is $minimum"
echo "Maximum number in an array is $maximum"