Problem 322. Number of Circles in a Number

Created by @bmtran (Bryant Tran)

Solve Later

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

Solve

Solution Stats

354 Solutions
169 Solvers

Last Solution submitted on Nov 12, 2019

Last 200 Solutions

Problem Comments

Solution Comments

Solution 42431

1 Comment

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.

Problem Recent Solvers169

Problem Tags

Problem 322. Number of Circles in a Number

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers169

Suggested Problems

More from this Author57

Problem Tags

Problem 322. Number of Circles in a Number

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers169

Suggested Problems

More from this Author57

Problem Tags

Players