# Code Puzzler

## Thursday Code Puzzler: Does the Linked List Have a Circular Reference?

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

3 replies - 4517 views - 01/10/13 by James Sugrue in Articles

## DZone Code Puzzler Follow-up: Power Set - Round 2

On Dec. 13, the code puzzler was to generate the power set of a set provided as an array of strings. The puzzler did not specify which data representation...

0 replies - 1737 views - 01/05/13 by Erik Colban in Articles

## Thursday Code Puzzler: Verification of a Binary Search Tree

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

4 replies - 2729 views - 01/03/13 by James Sugrue in Articles

## Thursday Code Puzzler: Self Replicating Program

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

3 replies - 4597 views - 12/20/12 by James Sugrue in Articles

## Code Puzzler Response - Find the Integer Square Root of a Positive Integer

This Code Puzzler comes from the community contributor - Erik ColbanThanks, Eric for today's extra brain-teaser!Write a function that calculates the integer...

0 replies - 4726 views - 12/13/12 by Mitch Pronschinske in Articles

## Thursday Code Puzzler: Power Set Calculation

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

5 replies - 3310 views - 12/13/12 by James Sugrue in Articles

## Thursday Code Puzzler: Square Roots With A Twist

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

3 replies - 3020 views - 12/06/12 by James Sugrue in Articles

## Thursday Code Puzzler: The Knapsack Problem

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

9 replies - 4493 views - 11/29/12 by James Sugrue in Articles

## Thursday Code Puzzler: Investment Predictor

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that...

16 replies - 3687 views - 11/22/12 by James Sugrue in Articles

## Thursday Code Puzzler: Test Case Generator

It's Thursday, time for our weekly code puzzler! The idea is simple: solve the coding problem as efficiently as you can, in any language or framework...

4 replies - 5351 views - 11/15/12 by James Sugrue in Articles

## Thursday Code Puzzler: String Permutations

It's been a while, but the Thursday code puzzlers are back! The idea is simple: solve the coding problem as efficiently as you can, in any language or...

9 replies - 5976 views - 11/08/12 by James Sugrue in Articles

## Thursday Code Puzzler: String Intern Puzzle in Java 7 and 6

A String based puzzle for you. The following program String te = "te", st = "st"; // "test".length(); String username =...

5 replies - 8032 views - 10/18/12 by Peter Lawrey in Articles

## Thursday Code Puzzler: Reversing Words

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

9 replies - 3416 views - 09/26/12 by James Sugrue in Articles

## Thursday Code Puzzler: Efficient Duplicate Detection

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

25 replies - 4027 views - 09/19/12 by James Sugrue in Articles

## Thursday Code Puzzler: How Many Weekends?

Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you...

8 replies - 4239 views - 09/12/12 by James Sugrue in Articles