exp/rand: add Shuffle, copying CL51891 from math/rand

Other than fixing the examples for the different output from the
different generator, and using Int31n instead of int31n, this is
a straight patch of  https://golang.org/cl/51891
to bring the packages closer to alignment.

Change-Id: I0a6ca1e2da8209b4da0a5cf03f83b2a6d750ef64
Reviewed-on: https://go-review.googlesource.com/122541
Reviewed-by: Ian Lance Taylor <iant@golang.org>
3 files changed
tree: dfade7cd53756f3608a8d093ed73f3ae3f592af2
  1. ebnf/
  2. ebnflint/
  3. fsnotify/
  4. inotify/
  5. io/
  6. mmap/
  7. old/
  8. rand/
  9. shiny/
  10. shootout/
  11. utf8string/
  12. winfsnotify/
  13. .gitattributes
  14. .gitignore
  15. AUTHORS
  16. codereview.cfg
  17. CONTRIBUTING.md
  18. CONTRIBUTORS
  19. LICENSE
  20. PATENTS
  21. README.md
README.md

exp

This subrepository holds experimental and deprecated (in the old directory) packages.

The idea for this subrepository originated as the pkg/exp directory of the main repository, but its presence there made it unavailable to users of the binary downloads of the Go installation. The subrepository has therefore been created to make it possible to go get these packages.

Warning: Packages here are experimental and unreliable. Some may one day be promoted to the main repository or other subrepository, or they may be modified arbitrarily or even disappear altogether.

In short, code in this subrepository is not subject to the Go 1 compatibility promise. (No subrepo is, but the promise is even more likely to be violated by go.exp than the others.)

Caveat emptor.