I've learned from this and similar solutions of the use of shiftdim with a negative number. This may well be handy for future programming. Thanks for showing us this feature.
Swap the first and last columns
Word Counting and Indexing
Program an exclusive OR operation with logical operators
Make one big string out of two smaller strings
The Answer to Life, the Universe, and Everything
Set a Soroban Abacus
Return the first and last characters of a character array
Recurring Cycle Length (Inspired by Project Euler Problem 26)
Test if two numbers have the same digits
Next Lower Power of B
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