Over a million developers have joined DZone.

Thursday Code Puzzler: Find String Pairs

DZone's Guide to

Thursday Code Puzzler: Find String Pairs

· Java Zone ·
Free Resource

Take 60 minutes to understand the Power of the Actor Model with "Designing Reactive Systems: The Role Of Actors In Distributed Architecture". Brought to you in partnership with Lightbend.

It's Thursday, so it's 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!

Find String Pairs 

Create a method that takes a string parameter and looks for pairs of strings in the code, breaking the string up using spaces as the delimiter. There are two types of pairs, combinations and adjacent, and you'll need to find a count of each. Adjacent pairs appear alongside each other, while combination pairs cover every permutation that can be found of pairing the strings.

So if you have a string 

dzone java dzone dzone javascript java

the results would be 

dzone has 1 adjacent pair 
dzone has 3 combination pairs (0,2) (0,3) (2,3)
java has 1 combination pair (1,5) 

Catch up on all our previous puzzlers here

Learn how the Actor model provides a simple but powerful way to design and implement reactive applications that can distribute work across clusters of cores and servers. Brought to you in partnership with Lightbend.


Opinions expressed by DZone contributors are their own.

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

{{ parent.tldr }}

{{ parent.urlSource.name }}