Counting characters, words, length of the words and total length in a sentence

Question

I have to write a script that takes a sentence and prints the word count, character count (excluding the spaces), length of each word and the length. I know that there exist

Answer 1

riffing on Jaypal Singh's answer:

jcomeau@intrepid:~$ mystring="one two three four five"
jcomeau@intrepid:~$ echo "string length: ${#mystring}"
string length: 23
jcomeau@intrepid:~$ echo -n "lengths of words: "; i=0; for token in $mystring; do echo -n "${#token} "; i=$((i+1)); done; echo; echo "word count: $i"
lengths of words: 3 3 5 4 4 
word count: 5
jcomeau@intrepid:~$ echo -n "maximum string length: "; maxlen=0; for token in $mystring; do if [ ${#token} -gt $maxlen ]; then maxlen=${#token}; fi; done; echo $maxlen
maximum string length: 5