Practice Exercise in Bash Basics Series #5: Using Arrays in Bash

Bash Basics Series
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#!/bin/bash

numbers=()

read -p "Enter 3 numbers: " num

IFS=' ' read -r -a numbers <<< "$num"

numbers_length=${#numbers[@]}

reverse_numbers=()

for (( i=$numbers_length-1; i>=0; i-- )); do
        reverse_numbers+=("${numbers[i]}")
done

echo "Numbers in reverse order are: ${reverse_numbers[*]}"
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I liked the use of IFS. I guess I deliberately omitted that from the tutorial.