Write a script to round x DOWN to the next lowest integer:
e.g. x = 2.3 --> x = 2 also: x = 2.7 --> x = 2
Extract leading non-zero digit
Test if two numbers have the same digits
Create incrementing array
Matlab Basics - Switching Assignments
Matlab Basics - Rounding II
Matlab Basics II - Extract last 3 elements of a vector
Matlab Basics - Assigning Variables
Replace every 3rd element in a vector with 4
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