You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
11 lines
574 B
11 lines
574 B
2 years ago
|
|
||
|
|
Exercise 3.6: It is useful to be able to reset a
|
||
|
|
random-number generator to produce a sequence starting from a given value.
|
||
|
|
Design a new rand procedure that is called with an argument that is
|
||
|
|
either the symbol generate or the symbol reset and behaves as
|
||
|
|
follows: (rand 'generate) produces a new random number; ((rand
|
||
|
|
'reset) ⟨new-value⟩) resets the internal state variable to the
|
||
|
|
designated ⟨new-value⟩. Thus, by resetting the state, one can generate
|
||
|
|
repeatable sequences. These are very handy to have when testing and debugging
|
||
|
|
programs that use random numbers.
|