Java List Value Add All addAllWords(String text, List result)

Description

add All Words

License

Apache License

Declaration

private static void addAllWords(String text, List<String> result) 

Method Source Code

//package com.java2s;
/*/*from   w  ww . j  a v a 2s. c o m*/
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.List;

public class Main {
    private static void addAllWords(String text, List<String> result) {
        int start = 0;
        while (start < text.length()) {
            int next = nextWord(text, start);
            result.add(text.substring(start, next));
            start = next;
        }
    }

    static int nextWord(String text, int start) {
        if (!Character.isLetterOrDigit(text.charAt(start))) {
            return start + 1;
        }

        int i = start;
        boolean prevIsLetterOrDigit = i > 0 && Character.isLetterOrDigit(text.charAt(i - 1));
        while (i < text.length()) {
            char c = text.charAt(i);
            if (!isWordStart(c)) {
                if (!Character.isLetterOrDigit(c)) {
                    break;
                }
                if (prevIsLetterOrDigit) {
                    break;
                }
            }
            prevIsLetterOrDigit = true;
            i++;
        }

        if (i > start + 1) {
            if (i == text.length() || !Character.isLetterOrDigit(text.charAt(i))) {
                return i;
            }
            return i - 1;
        }
        /*boolean */prevIsLetterOrDigit = i > 0 && Character.isLetterOrDigit(text.charAt(i - 1));
        while (i < text.length()) {
            char c = text.charAt(i);
            if (!Character.isLetterOrDigit(c))
                break;
            if (isWordStart(c))
                break;
            if (!prevIsLetterOrDigit)
                break;
            prevIsLetterOrDigit = true;
            i++;
        }
        return i;
    }

    static boolean isWordStart(char p) {
        return Character.isUpperCase(p) || Character.isDigit(p);
    }
}

Related

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2. addAllUnique(List aList, List theObjects)
3. addAllUnique(List l1, T element)
4. addAllUniqueId(List aList, List theObjects)
5. addAllUniqueToList(List objects, List objectsToAdd)
6. addArrayToList(List list, String as[])
7. addArrayToList(List list, double[] array)
8. addArrayToList(List list, T[] array)
9. addArrayToList(String[] array, List list)