Can’t solve programmingbydoing.com exercise #63c [on hold]

https://programmingbydoing.com/a/nim.html

Hello. I had been doing some exercises on this website in Java for quite some time. I had finished all the bonuses up until the last two. The premier requires displaying “*” signs in columns. I tried 2D arrays but those were too exhaustive and impractical, the problem is printing the column up until “A” or “B” for example and returning to the beginning. Posts on reddit were uncurated and outdated, and there were only 2 questions from the whole website on stackoverflow, which didn’t match mine. Thank you.


Source: java

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