The kata doesn't have a built-in way to visualize the images. The idea is that you should code your own visualization; consider it part of the challenge.
Another way to visualize the input images is by printing out an ASCII respresentation, one ASCII character per pixel. The smallest digit images are 16 pixels high, so this kind of ASCII representation of them is convenient to work with.
since kata is purple, it seems fair
The kata doesn't have a built-in way to visualize the images. The idea is that you should code your own visualization; consider it part of the challenge.
Why don't you state in the description how we can visualise the data?
Thanks for the kind words.
Another way to visualize the input images is by printing out an ASCII respresentation, one ASCII character per pixel. The smallest digit images are 16 pixels high, so this kind of ASCII representation of them is convenient to work with.