Package com.carrotsearch.randomizedtesting.generators

Class RandomNumbers

  • public final class RandomNumbers
extends java.lang.Object
    Utility classes for selecting random numbers from within a range or the numeric domain for a given type.
    See Also:
    BiasedNumbers

    • Constructor Summary

      Constructors 
      Constructor Description
      RandomNumbers()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static long nextLong​(java.util.Random rnd, long n)
      Similar to Random.nextInt(int), but returns a long between 0 (inclusive) and n (exclusive).
      static int randomIntBetween​(java.util.Random r, int min, int max)
      A random integer between min (inclusive) and max (inclusive).
      static long randomLongBetween​(java.util.Random r, long min, long max)
      A random long between min (inclusive) and max (inclusive).
      private static int toIntExact​(long value)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • RandomNumbers

        public RandomNumbers()

    • Method Detail

      • randomIntBetween

        public static int randomIntBetween​(java.util.Random r,
                                   int min,
                                   int max)
        A random integer between min (inclusive) and max (inclusive).

      • randomLongBetween

        public static long randomLongBetween​(java.util.Random r,
                                     long min,
                                     long max)
        A random long between min (inclusive) and max (inclusive).

      • nextLong

        public static long nextLong​(java.util.Random rnd,
                            long n)
        Similar to Random.nextInt(int), but returns a long between 0 (inclusive) and n (exclusive).
        Parameters:
        rnd - Random generator.
        n - the bound on the random number to be returned. Must be positive.
        Returns:
        Returns a random number between 0 and n-1.

      • toIntExact

        private static int toIntExact​(long value)