org.apache.commons.math3.exception

## Class NonMonotonicSequenceException

- java.lang.Object
- - java.lang.Throwable
  - - java.lang.Exception
    - - java.lang.RuntimeException
      - - java.lang.IllegalArgumentException
        - - org.apache.commons.math3.exception.MathIllegalArgumentException
          - - org.apache.commons.math3.exception.MathIllegalNumberException
            - - org.apache.commons.math3.exception.NonMonotonicSequenceException

- All Implemented Interfaces:
    Serializable, ExceptionContextProvider

      public class NonMonotonicSequenceException
      extends MathIllegalNumberException

  Exception to be thrown when the a sequence of values is not monotonically increasing or decreasing.
  Since:
    2.2 (name changed to "NonMonotonicSequenceException" in 3.0)
  See Also:
    Serialized Form

- - ### Field Summary

    - ### Fields inherited from class org.apache.commons.math3.exception.MathIllegalNumberException

      `INTEGER_ZERO`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `NonMonotonicSequenceException(Number wrong, Number previous, int index)` Construct the exception.
    `NonMonotonicSequenceException(Number wrong, Number previous, int index, MathArrays.OrderDirection direction, boolean strict)` Construct the exception.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `MathArrays.OrderDirection` | `getDirection()`
    `int` | `getIndex()` Get the index of the wrong value.
    `Number` | `getPrevious()`
    `boolean` | `getStrict()`

    - ### Methods inherited from class org.apache.commons.math3.exception.MathIllegalNumberException

      `getArgument`

    - ### Methods inherited from class org.apache.commons.math3.exception.MathIllegalArgumentException

      `getContext, getLocalizedMessage, getMessage`

    - ### Methods inherited from class java.lang.Throwable

      `addSuppressed, fillInStackTrace, getCause, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### NonMonotonicSequenceException

          public NonMonotonicSequenceException(Number wrong,
                                       Number previous,
                                       int index)

      Construct the exception. This constructor uses default values assuming that the sequence should have been strictly increasing.
      Parameters:
        `wrong` - Value that did not match the requirements.
        `previous` - Previous value in the sequence.
        `index` - Index of the value that did not match the requirements.

    - #### NonMonotonicSequenceException

          public NonMonotonicSequenceException(Number wrong,
                                       Number previous,
                                       int index,
                                       MathArrays.OrderDirection direction,
                                       boolean strict)

      Construct the exception.
      Parameters:
        `wrong` - Value that did not match the requirements.
        `previous` - Previous value in the sequence.
        `index` - Index of the value that did not match the requirements.
        `direction` - Strictly positive for a sequence required to be increasing, negative (or zero) for a decreasing sequence.
        `strict` - Whether the sequence must be strictly increasing or decreasing.

  - ### Method Detail

    - #### getDirection

          public MathArrays.OrderDirection getDirection()

      Returns:
        the order direction.

    - #### getStrict

          public boolean getStrict()

      Returns:
        `true` is the sequence should be strictly monotonic.

    - #### getIndex

          public int getIndex()

      Get the index of the wrong value.
      Returns:
        the current index.

    - #### getPrevious

          public Number getPrevious()

      Returns:
        the previous value.

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