--------------------------------------------------------------------------------
Unit tests for the miscellaneous sort functions.
--------------------------------------------------------------------------------

    >>> from copy import deepcopy
    >>> from nltk.misc.sort import *

A (very) small list of unsorted integers.

    >>> test_data = [12, 67, 7, 28, 92, 56, 53, 720, 91, 57, 20, 20]

Test each sorting method - each method returns the number of operations
required to sort the data, and sorts in-place (desctructively - hence the need
for multiple copies).

    >>> sorted_data = deepcopy(test_data)
    >>> selection(sorted_data)
    66

    >>> sorted_data
    [7, 12, 20, 20, 28, 53, 56, 57, 67, 91, 92, 720]

    >>> sorted_data = deepcopy(test_data)
    >>> bubble(sorted_data)
    30

    >>> sorted_data
    [7, 12, 20, 20, 28, 53, 56, 57, 67, 91, 92, 720]

    >>> sorted_data = deepcopy(test_data)
    >>> merge(sorted_data)
    30

    >>> sorted_data
    [7, 12, 20, 20, 28, 53, 56, 57, 67, 91, 92, 720]

    >>> sorted_data = deepcopy(test_data)
    >>> quick(sorted_data)
    13

    >>> sorted_data
    [7, 12, 20, 20, 28, 53, 56, 57, 67, 91, 92, 720]

--------------------------------------------------------------------------------
Unit tests for Wordfinder class
--------------------------------------------------------------------------------

    >>> import random
    >>> random.seed(12345)

    >>> from nltk.misc import wordfinder
    >>> wordfinder.word_finder()
    Word Finder
    <BLANKLINE>
    J V L A I R O T A T I S I V O D E R E T
    H U U B E A R O E P O C S O R E T N E P
    A D A U Z E E S R A P P A L L M E N T R
    C X A D Q S Z T P E O R S N G P J A D E
    I G Y K K T I A A R G F I D T E L C N S
    R E C N B H T R L T N N B W N T A O A I
    A Y I L O E I A M E I A A Y U R P L L D
    G L T V S T S F E A D I P H D O O H N I
    R L S E C I N I L R N N M E C G R U E A
    A A Y G I C E N L L E O I G Q R T A E L
    M R C E T I S T A E T L L E U A E N R L
    O U O T A S E E C S O O N H Y P A T G Y
    E M H O M M D R E S F P U L T H C F N V
    L A C A I M A M A N L B R U T E D O M I
    O R I L N E E E E E U A R S C R Y L I P
    H T R K E S N N M S I L A S R E V I N U
    T X T A A O U T K S E T A R R E S I B J
    A E D L E L J I F O O R P E L K N I R W
    K H A I D E Q O P R I C K T I M B E R P
    Z K D O O H G N I H T U R V E Y D R O P
    <BLANKLINE>
    1: INTERCHANGER
    2: TEARLESSNESS
    3: UNIVERSALISM
    4: DESENSITIZER
    5: INTERMENTION
    6: TRICHOCYSTIC
    7: EXTRAMURALLY
    8: VEGETOALKALI
    9: PALMELLACEAE
    10: AESTHETICISM
    11: PETROGRAPHER
    12: VISITATORIAL
    13: OLEOMARGARIC
    14: WRINKLEPROOF
    15: PRICKTIMBER
    16: PRESIDIALLY
    17: SCITAMINEAE
    18: ENTEROSCOPE
    19: APPALLMENT
    20: TURVEYDROP
    21: THINGHOOD
    22: BISERRATE
    23: GREENLAND
    24: BRUTEDOM
    25: POLONIAN
    26: ACOLHUAN
    27: LAPORTEA
    28: TENDING
    29: TEREDO
    30: MESOLE
    31: UNLIMP
    32: OSTARA
    33: PILY
    34: DUNT
    35: ONYX
    36: KATH
    37: JUNE
