Find other element in row of a matrix

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Tanmoy
Tanmoy 2015-5-17
编辑： Stephen23 2015-5-17
I have a matrix A = [ 3 4 ; 1 3; 5 6] I need to find the value beside 4. I tried find() function which returns (row, column) indices of 4, I need to calculate 3 from that indices. Is there any direct way to tell 3 is the neighbor element of 4?

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Stephen23
Stephen23 2015-5-17
编辑：Stephen23 2015-5-17
Use the row output of find
>> A = [ 3 4 ; 1 3; 5 6];
>> [r,c] = find(A==4);
>> A(r,1)
ans =
3

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