Calculates the number of transposition between two strings. - Android java.lang

Android examples for java.lang:String Algorithm

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Description

Calculates the number of transposition between two strings.

Demo Code

/*/*from  w  w w .ja v a 2  s. c  om*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.text.Normalizer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.regex.Pattern;

public class Main{

    /**
     * Calculates the number of transposition between two strings.
     * @param first The first string.
     * @param second The second string.
     * @return The number of transposition between the two strings.
     */
    private static int transpositions(final CharSequence first,
            final CharSequence second) {
        int transpositions = 0;
        for (int i = 0; i < first.length(); i++) {
            if (first.charAt(i) != second.charAt(i)) {
                transpositions++;
            }
        }
        return transpositions / 2;
    }

}

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