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Russ Cox authored
This changes the output of rand.Seed(0) perm := rand.Perm(100) When giving the same seeds to Go 1.0 and Go 1.1 programs I would like them to generate the same random numbers. ««« original CL description math/rand: remove noop iteration in Perm The first iteration always do `m[0], m[0] = m[0], m[0]`, because `rand.Intn(1)` is 0. fun note: IIRC in TAOCP version of this algorithm, `i` goes backward (n-1->1), meaning that the "already" shuffled part of the array is never altered betweens iterations, while in the current implementation the "not-yet" shuffled part of the array is conserved between iterations. R=golang-dev CC=golang-dev https://golang.org/cl/6845121 »»» R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/6905049
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