Package org.apache.jena.atlas.test

Class Gen

  • public class Gen
extends java.lang.Object
    Support for testing. May be generally useful

    • Constructor Summary

      Constructors 
      Constructor Description
      Gen()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static int[] permute​(int[] x)
      Pull items out of the list in a random order
      static int[] rand​(int numRand, int low, int high)
      Generate a random sequence between low (inclusive) and high (exclusive): may include duplicates.
      static int[] rand​(int numRand, int low, int high, boolean allDifferent)
      Generate a random sequence between low (inclusive) and high (exclusive) - with duplicates or not
      static int[] shuffle​(int[] x, int num)
      Do a number of random pair-wise swaps
      static java.lang.String strings​(int[] keys)  

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • Gen

        public Gen()

    • Method Detail

      • rand

        public static int[] rand​(int numRand,
                         int low,
                         int high)
        Generate a random sequence between low (inclusive) and high (exclusive): may include duplicates.

      • rand

        public static int[] rand​(int numRand,
                         int low,
                         int high,
                         boolean allDifferent)
        Generate a random sequence between low (inclusive) and high (exclusive) - with duplicates or not

      • permute

        public static int[] permute​(int[] x)
        Pull items out of the list in a random order

      • shuffle

        public static int[] shuffle​(int[] x,
                            int num)
        Do a number of random pair-wise swaps

      • strings

        public static java.lang.String strings​(int[] keys)