Unique number-1

#1

The code explained for unique number-1 is not satisfying all the cases. for example,If i entered 4 numbers :
2 same numbers and two different numbers

#2

hello @bhavika1550
ur input violates the constrainst.
in constraints it is clearly mentioned that there must be only one number that does not repeat and rest other element must repeat exactly twice.

#4

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