Increasing fast pointer by 2 only in Floyd cycle finding algorithm -


i going through floyd's cycle finding algorithm , had doubt.

do increase fast pointer 2 only?

is there other value should best match this?

suppose both pointers wind in cycle. relative each other, fast pointer moving 1 unit closer slow pointer on each iteration. means @ point pointers must overlap. handy property.

i suppose 3 speed , 2 speed pointer, wouldn't go faster , code more complex (have write out checks 3 pointers each step instead of 2).


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