StringHelper.cs
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上传日期:2013-09-30
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文件大小:2k
- /*
- * Copyright 2004 The Apache Software Foundation
- *
- * 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.
- */
- using System;
- namespace Lucene.Net.Util
- {
-
-
- /// <summary> Methods for manipulating strings.
- ///
- /// $Id: StringHelper.java 150248 2004-03-25 13:39:59Z otis $
- /// </summary>
- public abstract class StringHelper
- {
-
- /// <summary> Compares two strings, character by character, and returns the
- /// first position where the two strings differ from one another.
- ///
- /// </summary>
- /// <param name="s1">The first string to compare
- /// </param>
- /// <param name="s2">The second string to compare
- /// </param>
- /// <returns> The first position where the two strings differ.
- /// </returns>
- public static int StringDifference(System.String s1, System.String s2)
- {
- int len1 = s1.Length;
- int len2 = s2.Length;
- int len = len1 < len2?len1:len2;
- for (int i = 0; i < len; i++)
- {
- if (s1[i] != s2[i])
- {
- return i;
- }
- }
- return len;
- }
-
-
- private StringHelper()
- {
- }
- }
- }