Assign the content of "Lin Dong Tsai Hsieh Yu" to an array of five elements, then print the print array contents. Array index in bash starts with 0.

LASTNAME="Lin Dong Tsai Hsieh Yu"  string input
arr=($LASTNAME)                    assign string to the array named arr
echo ${arr[0]} ${arr[3]}           print the values of arr[0] and arr[3]
echo ${arr[*]}                     print all the values in array arr
echo ${!arr[*]}                    print the indices of array arr
echo ${#arr[*]}                    print the lengths of array arr
echo ${#arr[@]}                    also print the lengths of array arr
b=`seq 1 9`                        b is a string
brr=(`seq 1 9`)                    brr is an array
arr=(`echo "Lin Dong Tsai Hsieh Yu"`)assign array via stdout