Module ojalgo
Package org.ojalgo.type

Class IndexSelector

  • public final class IndexSelector
extends java.lang.Object
    An array of int:s (indices) that are partitioned to be either "included" or "excluded". If you need more than 2 different states then EnumPartition is an alternative.
    See Also:
    EnumPartition

    • Field Detail

      • myExcluded

        private transient int[] myExcluded

      • myExcludedLength

        private int myExcludedLength

      • myIncluded

        private transient int[] myIncluded

      • myIncludedLength

        private int myIncludedLength

      • myLastExcluded

        private int myLastExcluded

      • myLastIncluded

        private int myLastIncluded

      • mySelector

        private final boolean[] mySelector

    • Constructor Detail

      • IndexSelector

        public IndexSelector​(int count)

      • IndexSelector

        public IndexSelector​(int count,
                     int[] initiallyIncludedIndeces)

      • IndexSelector

        private IndexSelector()

    • Method Detail

      • countExcluded

        public int countExcluded()

      • countIncluded

        public int countIncluded()

      • exclude

        public void exclude​(int indexToExclude)

      • exclude

        public void exclude​(int... indecesToExclude)

      • excludeAll

        public void excludeAll()

      • getExcluded

        public int[] getExcluded()

      • getIncluded

        public int[] getIncluded()

      • getLastExcluded

        public int getLastExcluded()

      • getLastIncluded

        public int getLastIncluded()

      • grow

        public void grow()
        Randomly include 1 of the currently excluded

      • include

        public void include​(int indexToInclude)

      • include

        public void include​(int... indecesToInclude)

      • includeAll

        public void includeAll()

      • isExcluded

        public boolean isExcluded​(int index)

      • isIncluded

        public boolean isIncluded​(int index)

      • isLastExcluded

        public boolean isLastExcluded()
        Is the last excluded index still excluded, or has it been included by a later operation?

      • isLastIncluded

        public boolean isLastIncluded()
        Is the last included index still included, or has it been excluded by a later operation?

      • pivot

        public void pivot​(int indexToExclude,
                  int indexToInclude)

      • resetHistory

        public void resetHistory()
        After bulk operations, like setting up some initial state, the history of last included and excluded is probably not relevant. It may be a good idea to reset it to prevent it from affecting following logic.

      • revertLastExclusion

        public void revertLastExclusion()

      • revertLastInclusion

        public void revertLastInclusion()

      • shrink

        public void shrink()
        Randomly exclude 1 of the currently included

      • shuffle

        public void shuffle()
        Randomly exclude 1 of the currently included and include 1 of the excluded

      • size

        public int size()

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object