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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=24699 repetitive permitations Summary: repetitive permitations Product: Commons Version: Nightly Builds Platform: PC OS/Version: Windows NT/2K Status: NEW Severity: Normal Priority: Other Component: Math AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] According to the API doc, the random permutations generated by RandomData.nextPermutation(int, int) are also supposed to be non-repetitive: http://jakarta.apache.org/commons/sandbox/math/apidocs/org/apache/commons/math/random/RandomData.html#nextPermutation(int,%20int) In fact, the inplementing class RandomDataImpl may produce identical permutations before all possible ones have been exhausted. I just noticed this and loaded the lates build (Jar packed on Nov 1 2003) and the problem is still there... For example, two successive calls to nextPermutation(2,2) may produce {1, 0} {1, 0} --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]