[MATH-1339] "shuffle" in "MathArrays"

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.0
• Labels: performance
• Assignee: Gilles Sadowski
• Reporter: Gilles Sadowski
• Created: 13/Mar/16 01:37
• Updated: 22/Apr/16 22:34
• Resolved: 22/Apr/16 22:34

Description

Method shuffle creates an instance of UniformIntegerDistribution for each entry of the list to be shuffled. Then sample() is called on each instance, which in turn will call nextInt() on the provided RNG.

The same effect could be achieved more efficiently by calling nextInt(int) directly on the provided RNG, followed by an addition.