Coloring [0 1 0 1 1 0 2] seems to work for test case 2, giving it a chromatic number of 3 rather than 4.
yes.. corrected. Thanks for pointing it out :-)
Tic Tac Toe FTW
Reverse the elements of an array
The sum of individual numbers...
Solving Quadratic Equations (Version 1)
birthday on same day of week
Path of least resistance - Move all direction
longest common substring : Skipped character version
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