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.
Bottles of beer
Find the nearest integer
Find the index of n in magic(n)
Multiply by 3
Alternately upper-lower case
index of n^2 in magic(n)
execute the declaration in strings and return value
Sum of odd numbers in a matrix
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