#!/bin/bash

sudo apt-get update > /dev/null 2>&1
packages=("$@")
declare -a versions=()

for ((i=0; i<${#packages[@]}; i++))
do
    latest_version=$(apt-cache policy ${packages[$i]} 2>/dev/null | awk '/Candidate:/ {print $2}')
    if [[ $? -eq 0  && -n "$latest_version" ]]; then
        versions+=(${latest_version})
    else
        versions+=("none")
    fi
done

echo "${versions[@]}"