How to create matrix with array under certain conditions?

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Yun Inn
Yun Inn 2013-5-3
I have an array:
A=[1.3 1.2 1.3]
How can I get matrix B using A?
B=[1.3 1.3 1.3; 1.3 1.2 1.3; 1.3 1.3 1.3]
Matrix B has the value of A at the central row,column,and diagonal.

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Chandrasekhar
Chandrasekhar 2013-5-3
B = [ones(1,3)*A(1); A; ones(1,3)*A(1)]

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