Does "All the data still" mean, that the fields are not re-ordered? A lot of the solutions change the order of the fields.
Currently, Matlab has the function renameStructField.
When I run the test suite on my computer, this solution works. It passes the test suite.
This fails, if the fieldname to be replaced appears as part of another fieldname. Example: S.ab=1; S.a=2; renamefield(S, 'a', 'c')
Count from 0 to N^M in base N.
Number of 1s in the Binary Representation of a Number
Project Euler: Problem 3, Largest prime factor
Sum of diagonal of a square matrix
Is A the inverse of B?
Finding Perfect Squares
Connect Four Win Checker
Implement a ROT13 cipher
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