tree f554a681fe40fe4aa44a5f2f58c590e06a37eda5
parent 279fc850d72ee755bf08339069eb9ebdf23a0620
author Russ Cox <rsc@golang.org> 1508509990 -0400
committer Russ Cox <rsc@golang.org> 1508515552 +0000

tour: make Sqrt exercise more accessible

Also don't assume prior knowledge of switch statement,
which I noticed right below the Sqrt exercise.

Change-Id: I1f3e191aa924a79c822780353a526d8edaafc168
Reviewed-on: https://go-review.googlesource.com/72130
Reviewed-by: Austin Clements <austin@google.com>