tour: btrees do not store values just in leaves

The concurrency/7 slide (the binary tree exercise) says:

> There can be many different binary trees with the same sequence of
  values stored at the leaves.

Which is misleading: in the btree in the exercise, values are not
stored just in the leaves, the internal nodes hold values too.

Fixes golang/tour#774

Change-Id: I71af71ccf36ac8ad87dfe73b751b461890c3a7e0
Reviewed-on: https://go-review.googlesource.com/c/tour/+/179937
Reviewed-by: Andrew Bonventre <andybons@golang.org>
1 file changed
tree: c01a94446dd343f14f3aab9fb13e1d2ed2b8df1b
  1. content/
  2. gotour/
  3. pic/
  4. reader/
  5. solutions/
  6. static/
  7. template/
  8. tools/
  9. tree/
  10. wc/
  11. .gcloudignore
  12. app.yaml
  13. appengine.go
  14. AUTHORS
  15. codereview.cfg
  16. CONTRIBUTING.md
  17. CONTRIBUTORS
  18. fmt.go
  19. go.mod
  20. go.sum
  21. LICENSE
  22. local.go
  23. README.md
  24. TODO
  25. tour.go
  26. TRANSLATE
README.md

Go Tour

A Tour of Go is an introduction to the Go programming language. Visit https://tour.golang.org to start the tour.

Download/Install

To install the tour from source, first set up a workspace and then run:

$ go get golang.org/x/tour

This will place a tour binary in your workspace's bin directory, which can be run offline.

Contributing

Contributions should follow the same procedure as for the Go project: https://golang.org/doc/contribute.html

To run the tour server locally:

dev_appserver.py app.yaml

and then visit http://localhost:8080/ in your browser.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the tour is located at https://github.com/golang/go/issues. Prefix your issue with “tour:” in the subject line, so it is easy to find.

License

Unless otherwise noted, the go-tour source files are distributed under the BSD-style license found in the LICENSE file.