For given input matrix a, rotate it by 90 degrees and find the sum of the diagonals.
1 2 3 4
5 6 7 8
8 10 12 -2
-1 -3 -5 -7
Remove all the words that end with "ain"
07 - Common functions and indexing 4
construct matrix with identical rows
Determine the length of a string of characters
ASCII sum of phrases
Basic matlab numeric and string manipulations
function to compute root mean square of first nn positive odd integers
Return median of a matrix
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