org.carrot2.util
Class CharArrayUtils

java.lang.Object
  org.carrot2.util.CharArrayUtils

public class CharArrayUtils
extends Object

A number of useful methods for working with char [] arrays.

Field Summary

static char[]

EMPTY_ARRAY

Constructor Summary

CharArrayUtils()

Method Summary

static float	getCapitalizedRatio(char[] string) Computes and returns the ratio of capitalized letters in the string to the numbers of all letters.
static boolean	hasCapitalizedLetters(char[] string) Returns true if the input array contains any capitalized characters.
static char[]	toCapitalizedCopy(char[] string) Returns a capitalized copy of the input character array.
static boolean	toLowerCase(char[] word, char[] buffer) Convert to lower case (character-by-character) and save the result into buffer.
static boolean	toLowerCase(char[] word, char[] buffer, int start, int length) Convert to lower case (character-by-character) and save the result into buffer.
static char[]	toLowerCaseCopy(char[] array) To lower case conversion.
static char[]	toLowerCaseInPlace(char[] array) In place to lower case conversion.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_ARRAY

public static final char[] EMPTY_ARRAY

Constructor Detail

CharArrayUtils

public CharArrayUtils()

Method Detail

toLowerCaseInPlace

public static char[] toLowerCaseInPlace(char[] array)

In place to lower case conversion. In input array is returned for convenience.

toLowerCaseCopy

public static char[] toLowerCaseCopy(char[] array)

To lower case conversion. A copy of the input array will be created.

getCapitalizedRatio

public static float getCapitalizedRatio(char[] string)

Computes and returns the ratio of capitalized letters in the string to the numbers of all letters.

hasCapitalizedLetters

public static boolean hasCapitalizedLetters(char[] string)

Returns true if the input array contains any capitalized characters.

toCapitalizedCopy

public static char[] toCapitalizedCopy(char[] string)

Returns a capitalized copy of the input character array.

toLowerCase

public static boolean toLowerCase(char[] word,
                                  char[] buffer)

Convert to lower case (character-by-character) and save the result into buffer.

Parameters:

word - The word to be converted to lower case.

buffer - The buffer where the result should be saved.

Returns:

Returns true if at least one character was changed between word and buffer. false indicates an identical copy.

Throws:

AssertionError - If buffer is smaller than word.

toLowerCase

public static boolean toLowerCase(char[] word,
                                  char[] buffer,
                                  int start,
                                  int length)

Convert to lower case (character-by-character) and save the result into buffer. The buffer must have at least length characters.

Parameters:

word - The word to be converted to lower case.

buffer - The buffer where the result should be saved.

start - the index in the word at which to start

length - the number of characters from word to process

Returns:

Returns true if at least one character was changed between word and buffer. false indicates an identical copy.

Throws:

AssertionError - If buffer is smaller than length.

AssertionError - If start + length is smaller than the length word.