Find common elements of two array with repetition????

For example
A = [1234567]
B = [2348907]
now i hv to compare above two and want to store index of common elements.

Antworten (1)

Stephen23
Stephen23 am 11 Sep. 2018
Bearbeitet: Stephen23 am 11 Sep. 2018
[C,ia,ib] = intersect(A,B)
For example:
>> A = [1,2,3,4,5,6,7];
>> B = [2,3,4,8,9,0,7];
>> [C,ia,ib] = intersect(A,B)
C =
2 3 4 7
ia =
2 3 4 7
ib =
1 2 3 7

4 Kommentare

div
div am 11 Sep. 2018
Thank you for your replay sir but i want A=[1,2,3,4,5,1,9] B=[1,4,3,7,5,1,9] so answer should be 1,3,5,1,9 .....i want those element which are common in same position in A and B with their index . And intersect give common elements with no repetition. Please help me out sir
Stephen23
Stephen23 am 11 Sep. 2018
Bearbeitet: Stephen23 am 11 Sep. 2018
@div: well, that is a different question. Try this:
>> A = [1,2,3,4,5,1,9];
>> B = [1,4,3,7,5,1,9];
>> C = A(A==B)
C =
1 3 5 1 9
>> X = find(A==B) % (but logical indices are usually more efficient)
X =
1 3 5 6 7
div
div am 11 Sep. 2018
not working sir . Please help this out.
It DOES work. I just copied and pasted and it worked fine. Post the code that you subsequently altered so we can see how your alterations ruined it.

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div
am 11 Sep. 2018

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am 11 Sep. 2018

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