[離散] recursive definition

[cola1230 (cola)]

上課沒認真聽

課本也找不到類似的

5.      The set of strings 1,111,11111,1111111….
6.      The set of bit strings 0,1,00,11,000,111,0000,1111….
7.      The set of bit strings 00,11,0000,,1111,000000,111111….

thx

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