已知信源符号(a1,a2,a3,a4,a5)和其相对应的概率(0.5,0.25,0.125,0.0625,0.0625),对其进行Huffman编码,其平均码长为()。
A.3.6(bit)
B.1.875(bit)
C.2.42(bit)
D.4.3(bit)
正确答案:B
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