perhaps you should specify that y is in the order of the first occurence of each unique element of x
This would be a better problem if unique and sort functions were not allowed
Solution without using sort(.) or unique(.) .
Solution without using sort(_) or unique(_) .
Note 1) this solution does not use sort() anywhere :) 2) the more elegant "stable" is not available for unique in pre-2012 MATLAB.
Relative ratio of "1" in binary number
Add two numbers
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MATLAB Basic: rounding III
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Multiply 2 numbers
Create a matrix from a cell
Fill a zeros matrix
Unique values without using UNIQUE function
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