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
Check if sorted
Getting the absolute index from a matrix
Find out total non zero element of matrix
Finding an element in a vector
Matlab Basics II - Intervals
Replace every 3rd element in a vector with 4
Matlab Basics - Convert a row vector to a column vector
Matlab Basics II - Operations and Matrix Dimensions
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