Obtain the most frequent character.
If there is a tie between letters, return the first result alphabetically.
Additional test cases have been added.
Verify you 7th Test Suite.
Make a checkerboard matrix
Back and Forth Rows
Distance walked 3D
Back to basics 22 - Rotate a matrix
Is the Point in a Circle?
Alternately upper-lower case
index of n^2 in magic(n)
interesting center of magic matrix
union without repitition
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