Record Case Detail

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octave: X11 DISPLAY environment variable not set
octave: disabling GUI features
error: user-defined function cannot be indexed with {

Your answer may be identical to the JOJ answer in the first several lines.

However, the main problem you meet now is Runtime Error. And the exit code of your program is 1, which should be 0.

Please double check your code to solve this problem and try again.

  Additional information about GNU Octave is available at
  http://www.octave.org

  Links to the mailing list and other resources for getting help with
  Octave are available at
  http://www.octave.org/support.html

  The Octave Wiki has user-generated content on a variety of subjects
  including installation and is available at
  http://wiki.octave.org

  Additional functionality can be enabled by using packages from
  the Octave Forge project, which may be found at
  http://octave.sourceforge.net

  Report bugs to the bug tracker at
  http://bugs.octave.org
  But first, please read the guidelines to writing a helpful report at
  http://www.octave.org/bugs.html

Your reverse.txt:

bncc bncc bncc bncc
bncc  bncc  bncc  bncc
bncc   bncc   bncc   bncc


bncc   bncc   bncc   bncc
bncc  bncc  bncc  bncc
bncc bncc bncc bncc

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JOJ Answer