Over a million developers have joined DZone.

Thursday Code Puzzler: Count The Ones

DZone's Guide to

Thursday Code Puzzler: Count The Ones

· Java Zone ·
Free Resource

Start coding something amazing with our library of open source Cloud code patterns. Content provided by IBM.

It's Thursday already, so time for another code puzzler. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you find suitable.

Note: Even though there really is nothing stopping you from finding a solution to this on the internet, try to keep honest, and come up with your own answer.  It's all about the participation!

Counting Ones

Given an array of numbers, return the occurances of the number 1 in the array. So, if the array contains 1, 2, 11, 13 you would return 4 (as 11 contains two instances of 1). 

Catch up on all our previous puzzlers here

Use this tool to look at the contents of GitHub and classify code based on the programming language used.  Content provided by IBM Developer.


Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}