Given a number, return the number of closed 'circles' in the base 10 numerical representation.
Note: the number 4 has no circles
Example:
8819 -> 5
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1 player likes this solution
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1 Comment
Peter Wittenberg
on 8 Apr 2012
Interpolating on a string (the ASCII values) is an interesting idea even though the long interpolation string could be reduced by subtracting '0', but at the expense of a "longer" solution.
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3 players like this problem
3 players like this problem