MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi test

Learn moreOpportunities for recent engineering grads.

Apply TodayGiven a number, return the number of closed 'circles' in the base 10 numerical representation.

Note: the number 4 has no circles

Example:

8819 -> 5

156 correct solutions
70 incorrect solutions

Last solution submitted on Jan 20, 2016

3 players like this problem

1 player likes this solution

1 Comment