A prefix coding can use a code with code words {9, 55}, as it has the prefix property. However, a code consisting of {9, 5, 59, 55} is not allowed, as 5 is a prefix of 59 and also of 55.
5
59
55
In modern China, Sunday is not usually a schoolday except around major holidays.
Temecula, a quiet hamlet of golf courses and antique shops, was gripped by a mission.
For several days, Mr. Sammler returning on the customary bus late afternoons from the Forty-second Street Library had been watching a pickpocket at work […] Mr. Sammler if he had not been a tall straphanger would not with his one good eye have seen these things happening.
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