Andy Bradford wrote:
> Doesn't this say to check the absolute value of the difference between
> two numbers in a sequence against a set of numbers 1, ... n-1? I suppose
> one could infer that this is a test for the maximum variance of any two
> integers in the sequence against one less than the number of elements in
> the sequence and 1, but then why bother calling it a set of numbers 1
> through n-1?
Josh's explanation is mathematically precise and concise, but not easy
to grasp without reading it over a couple of times. Some imprecise
inference often helps.
> We are looking for sequences with n > 0 elements where the absolute
> values of the differences of successive elements are all less than n
> elements - 1 and greater than 1?
>
> Thus, in his original example:
>
> 4 1 2 3
>
> Tests would be made for 3, 1 and finally 1 against the set { 1 2 3 },
> right?
Yes.
Shane
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