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')
Program an exclusive OR operation with logical operators
First non-zero element in each column
7 segment LED display
Make a 1 hot vector
Times 2 - START HERE
Alphabetize by last name
Remove all the consonants
Implement a ROT13 cipher
Find the two most distant points
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