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<DIV><FONT face=Arial size=2>suppose you have a list of words and you
want to unambiguously identify</FONT></DIV>
<DIV><FONT face=Arial size=2>each word in the list with the shortest number of
characters.</FONT></DIV>
<DIV><FONT face=Arial size=2>for instance a list like : kill, kiss,
take</FONT></DIV>
<DIV><FONT face=Arial size=2>i would want to get take just by typing
t.</FONT></DIV>
<DIV><FONT face=Arial size=2>but you would have to type kil or kis to get kill
or kiss.</FONT></DIV>
<DIV><FONT face=Arial size=2>where should i start googling? is this a matter of
sorting?</FONT></DIV>
<DIV><FONT face=Arial size=2>i was thinking of trees for some reason.
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