How to compare rows in a matrix?

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Atiqah Zakirah
Atiqah Zakirah 2017-5-16
编辑： KSSV 2017-5-16
I need to compare the rows in a single matrix to see which values are repeated. I also want to know which row number the repeated values are from. I'm basically trying to find any common value among multiple rows. Is there an efficient way to solve this, especially for huge data sets?

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KSSV
KSSV 2017-5-16
编辑：KSSV 2017-5-16
Read about ismemebr , intersection , unique

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