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 :-)
The Tower of Hanoi
First non-zero element in each column
Flag largest magnitude swings as they occur
Construct a precedence graph from a code segment
Path of least resistance - Move all direction
Signal Processing Basic - 1. Stretch a signal
Cat, Meowcat and Concatenation
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