9.2.3: Efficient trees for prefix codes. Consider the following tree for a prefix code. A text file contains only characters from the set
{a,b,c,d,e,f}
. The frequency of each letter in the file is: a:
5%
b:
5%
c:
10%
d:
15%
e:
25%
f:
40%
(b) Is there a prefix tree for the set
{a,b,c,d,e,f}
that would result in fewer bits per character on average for the given frequencies of the characters?