note 67274 deleted from function.shuffle by danbrown

Note Submitter: bsl04 uark edu ---- I spoke too soon. Other readers spotted than Benton's code was a little wrong. What a mess this thread is. This stuff isn't PHP, but I believe it correctly implements Fisher-Yates. random(a, b) returns a number n such that a <= n <= b. The arrays start at 0. Hopefully this is enough to help someone who's trying to implement FY (in whatever language). i = data_length; if (i == 0) return; while (i--) { r = random(0, i); tmp = data[i]; data[i] = data[r]; data[r] = tmp; }