145. most frequently occurring character

JavaScript

easy  - accepted / - tried

Given a non-empty string, return the most frequently ocurring character.

If there are multiple characters with same occurrance, return an array of them.

count('abbccc')
// 'c'

count('abbcccddd')
// ['c', 'd']

Follow-up: What is the time & space complexity of your approach?

Think aloud!

(115)