To get Length of each word in a String.

Hi,
I wanted to know, how to calculate the length of each word in a string.Suppose for example if the input is like this:
i/p:'Tech on the Net'
o/p:4 2 3 3
ie Tech-4 on-2 the-3 Net-3
another Ex:i am a good boy
o/p:1 2 1 4 3
Kindly let me know any PL/SQL function or SQL query which would help to achieve this.
Thanks&Regards
Zaheer

sql>select substr('tech on the net',decode(n,0,1,instr('tech on the net',' ',1,n)+1),
 decode(instr('tech on the net',' ',1,n+1),0,length('tech on the net')-instr('tech on the net',' ',1,n),
 instr('tech on the net',' ',1,n+1)- decode(n,0,0,instr('tech on the net',' ',1,n))-1)) wrd,
 length(substr('tech on the net',decode(n,0,1,instr('tech on the net',' ',1,n)+1),
 decode(instr('tech on the net',' ',1,n+1),0,length('tech on the net')-instr('tech on the net',' ',1,n),
 instr('tech on the net',' ',1,n+1)- decode(n,0,0,instr('tech on the net',' ',1,n))-1))) cnt
from(select rownum-1 n
 from dual
 connect by level <= length('tech on the net') - length(replace('tech on the net',' ',''))+1)
WRD CNT
tech 4
on 2
the 3
net 3

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