How can i manipulate matrix like this?

EDIT: I have solved the problem with using if-end loop, but if you share alternative solutions if you have, i will be very happy. Thanks.

Hi everbody,

I have a matrix like under the this text:

A=[1 1 2 2 3 3 4 4 5 5 6 6 1 1 2 2 3 3 4 4 5 5 1 1 2 2 3 3 4 4 5 5 ]

To transform the some numbers, which were written with bold type, to [4 3 2]; what kind of a code can be written?

If the numbers decrease from 6 to 1 or 5 to 1, some values should be change.

Modified matrix should be:

A=[1 1 2 2 3 3 4 4 5 4 3 2 1 1 2 2 3 3 4 4 3 2 1 1 2 2 3 3 4 4 5 5 ];

after the operation.

Thanks for answers.

[Jan]

Please explain the details. "If the numbers decrease from 6 to 1 or 5 to 1, some values should be change" is not exactly enough to implement a specific code. What should happen for [5 6 6 6 1]? Or [5 5 5 1]? Or [3 3 6 6 1]?

Answer 1

[Jan]

If there is a small number of possible repleacements only -perhaps 10-, use strrep:

toRep = [5 6 6 1];
Rep   = [4 3 2 1];
data  = strrep(data, toRep, Rep);

If the problem concerns many different patterns, define the pattern exactly at first. Then a general algorithm can be found.

[Volkan Yangin]

Thank you Jan Simon.