How to replace duplicate element to 0 in matrix for every rows

Question

ahmad 2022-5-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1726030-how-to-replace-duplicate-element-to-0-in-matrix-for-every-rows

回答： KSSV 2022-5-24

采纳的回答： KSSV

在 MATLAB Online 中打开

I need to replace the repeated elements in column of a matrix as 0's, If my matrix is like this means.

Input =

1 1 2 2 2 3 3 4 4 5 5 5 
2 2 3 3 3 4 4 4 5 5 6 6
1 1 1 2 2 3 4 5 5 5 6 6

My expected output should be like this

Output =

0 0 2 0 0 3 0 4 0 5 0 0 
2 0 3 0 0 4 0 0 5 0 6 0
0 0 0 2 0 3 4 5 0 0 6 0

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Answer 1

KSSV 2022-5-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1726030-how-to-replace-duplicate-element-to-0-in-matrix-for-every-rows#answer_970545

在 MATLAB Online 中打开

A = [1 1 1 2 2 2 3 3 4 4 5 5 5 
1 2 2 3 3 3 4 4 4 5 5 6 6
1 1 1 1 2 2 3 4 5 5 5 6 6] ;
B = zeros(size(A)) ;
for i = 1:size(A,1)
    [c,ia,ib] = unique(A(i,:)) ; 
    B(i,ia) = c ; 
end
B
B = 3×13
     1     0     0     2     0     0     3     0     4     0     5     0     0
     1     2     0     3     0     0     4     0     0     5     0     6     0
     1     0     0     0     2     0     3     4     5     0     0     6     0