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Showing posts with the label The Crazy Programmer Dutch National Flag Problem Dutch National Flag Problem The Crazy Programmer

Dutch National Flag Problem Vijay Sinha The Crazy Programmer

In this article, we will look into an interesting problem asked in many coding interviews related to arrays: Dutch National Flag Problem. We will discuss the problem, the intuition behind it, and the application of the algorithm in certain scenarios. Along with this we will look at different approaches to solve the problem and analyze its complexities. Dutch National Flag Problem  is among the popular programming problems suggested by E. Dijkstra. So, from the name, it is clear that the problem is related to the Dutch or National Flag of the Netherlands. The flag of the Netherlands has three colors: Red, White and Blue in the same order. So the problem is if given a set of balls belonging to these colors we have to randomly arrange balls of red, white and blue such that balls of the same color are placed together and the order is maintained. In programming, we represent this problem as : Given an Array of 0’s, 1’s and 2’s we have to arrange them such that 0’s come before 1’s and 1’s c