bash function returns array

gistfile1.sh

#!/bin/bash

abc=(a b c)

for (( I=0; I < ${#abc[*]}; ++I ))
do
   echo $I ${abc[$I]}
done

function func1(){
    echo "d e f"
}

def=(`func1`)
for (( I=0; I < ${#def[*]}; ++I ))
do
   echo $I ${def[$I]}
done