Problem 322. Number of Circles in a Number

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

63.52% Correct | 36.48% Incorrect
Last Solution submitted on Mar 16, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers233

Suggested Problems

More from this Author56

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!