How to extract a particular element from an array in BASH?

Question

Here is how I create my bash array:

while read line do    myarr[$index]=$line    index=$(($index+1)) done < lines.txt 

The file "lines.txt" constists of the following strings

hello big world! how are you where am I 

After creation of ${myarr[@]} I can easily access every element (line) in this array issuing

echo ${myarr[2]} 

But what if I want to extract just world!? Is it possible to extract world! from 0 element of the myarr? What's most important, is it possible to extract any last word from the myarr element?

I know that in python you can do myarr[0][3] and that will do the trick, how about bash?

Answer 1

This is one of many ways

set ${myarr[2]} echo $3