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Problem 1985. How unique?

Created by Jan Orwat

Sometimes, when we check unique entries of vector we would like to know how many times each value occurs.

Given vector of numbers A return vector U of unique values of A and corresponding vector H with occurrences.

Example:

   in:  A = [2 2 2 3 3 2 3 8 6 5 6]
  out:  U = [2 3 8 6 5]
        H = [4 3 1 2 1]  

Problem Group

Solution Statistics

17 correct solutions 31 incorrect solutions
Last solution submitted on Aug 27, 2014

Solution Comments