[racket] Question

From: Ashley Fowler (afowler2 at broncos.uncfsu.edu)
Date: Wed Sep 5 14:26:37 EDT 2012

Can anybody help me with this problem? I have an idea but would like some suggestions on how to start. The problem is below...

Write a procedure (switch-one-and-three1 LS) that takes a list of
exactly three items as its argument and returns the list with the first
and third items switched around. You may assume the input list contains
exactly three items
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