replace array value

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Mohammad Golam Kibria
I have a matrix
A=[1 2 3; 4 6 6;7 7 7]
I want to replace all 6 in the second column with 12 i.e A should be
as follows: A=[1 2 3; 4 12 12;7 7 7]
How to do that easily?

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Andrei Bobrov
Andrei Bobrov 2011-5-5
A(A==6)=12
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Oleg Komarov
Oleg Komarov 2011-5-5
A(A(:,2)==6,2) = 12;

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