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Grokking the Coding Interview Patterns in C#

Solution: Sort Colors

Explore how to efficiently sort an array representing colors using the two pointers approach and the Dutch National Flag algorithm. This lesson helps you implement a one-pass, in-place sorting solution with constant space, improving your understanding of pointer manipulation and array partitioning in coding interviews.

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Statement

You are given an array nums of length n, where each element represents an object colored either red, white, or blue. The integers 0, 1, and 2 are used to represent red, white, and blue, respectively.

Sort the array in place so that all objects of the same color are grouped together, arranged in the order: red (0), white (1), and blue (2).

You must solve this problem without using any library sort function. ...