You will receive a string of comma-separated integers whose elements have both a negative and a positive value, except for one integer that is either only negative or only positive, our challenge will be to find that integer. As usual shortest solution wins.
##Input
"1,-1,2,-2,3"
##Output
3
3has no matching negative appearance
##Note
- The only-positive or only-negative integer may appear more than once
- Use this code to check the result length
- You also can use this test case here
Rules
- The signature of the contest entry MUST be:
Class CodeGolf.PairedOpposites
{
ClassMethod Solve(o As %String)



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