Algorithms | Greedy Algorithms | Question 4

In question #2, which of the following represents the word \”dead\”?

(A)

1011111100101

(B)

0100000011010

(C)

Both A and B

(D)

None of these

Answer: (C)
Explanation:

character   code-word
    f          0
    c          100
    d          101
    a          1100
    b          1101
    e          111

The word dead can be represented as: 101 111 1100 101 However, the alternative codeword can also be found by assigning 1 to the left edge and 0 to the right edge of the tree, i.e. dead can also be represented as: 010 000 0011 010 See here for more details of the algorithm.

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