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number of switches

• To: mathgroup at smc.vnet.net
• Subject: [mg47479] number of switches
• From: "fake" <fake at fake.it>
• Date: Wed, 14 Apr 2004 07:16:27 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Consider the lists {1,1,0,1} and {1,1,0,0},{1,0,1,0,1}.
The first sequence (1101) switches 2 times (#2digit~#3digit,
#3digit~#4digit}, the second (1100) 1 time, the third 10101 4 times.

I have the following problem.
Consider a list of binary digits. Which is the easiest way to count the
number of switches of the list (using Mathematica commands)?

• Follow-Ups:
  • Re: number of switches
    • From: János <janos.lobb@yale.edu>
  • Re: number of switches
    • From: Tomas Garza <tgarza01@prodigy.net.mx>
  • Re: number of switches
    • From: Sseziwa Mukasa <mukasa@jeol.com>