Check to see if a Sudoku Puzzle is Solved
Return the first and last character of a string
Test if two numbers have the same digits
05 - Vector Equations 2
06 - Matrix Equations 2
03 - Matrix Variables 6
07 - Common functions and indexing 3
07 - Common functions and indexing 6
07 - Common functions and indexing 1
02 - Vector Variables 2
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