Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Thursday Code Puzzler: Count The Ones

DZone's Guide to

Thursday Code Puzzler: Count The Ones

· Java Zone ·
Free Resource

Bring content to any platform with the open-source BloomReach CMS. Try for free.

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

BloomReach CMS: the API-first CMS of the future. Open-source & enterprise-grade. - As a Java developer, you will feel at home using Maven builds and your favorite IDE (e.g. Eclipse or IntelliJ) and continuous integration server (e.g. Jenkins). Manage your Java objects using Spring Framework, write your templates in JSP or Freemarker. Try for free.

Topics:

Opinions expressed by DZone contributors are their own.

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

{{ parent.tldr }}

{{ parent.urlSource.name }}