Course of Raku / Essentials / Positional data types / Exercises

Traffic lights


The traffic light changes its colour every second. When it was first turned on, it started as yellow. Then, every second the colour changed in the order yellow — red — yellow — green and the cycle starts over.

Write a program that prints the state of the traffic lights on the 51st, 102nd and 305th second, assuming that the colour on the 1st second is red.


The program should print three numbers on separate lines:

$ raku traffic-lights.raku


See the solution

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