How to delete all repeat rows?
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How to delete all repeat rows?
I mean all repeat rows, like :
A=
[0 4;
2 4;
0 4;
4 8;
3 4]
How to got new_A=
[2 4;
4 8;
3 4]
采纳的回答
There is probably a more efficient way, but you can use unique() to get all first occurrences. Then you can use the second output to find all removed rows, which you can use as an input to setdiff.
A=[0 4;2 4;0 4;4 8;3 4;0 4];
[B,ind]=unique(A,'stable','rows');
ind=setdiff(1:size(A,1),ind);
B=setdiff(B,A(ind,:),'rows');
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