Please ex pl ain

#1

IN this question finding unique number 3 in which array given in which one number are diffrent and three numbers are same if we use bits manipulation then it gives answer correctly for positive numbers not a negative number …why…
like a[]]={1,1,1,2,3,3,3,},output =2…

#2

@AMIT_KUMAR it gives wrong output only if the unique number is negative, not if any other number is negative. It might have something to do with the way negative numbers are stored in memory, which results in wrong answer.

#3

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