Find a difference in two strings. - CSharp System

CSharp examples for System:String Search

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Description

Find a difference in two strings.

Demo Code

// This software is licensed under the LGPL, version 2.1 or later
using System.Text;
using System.Resources;
using System.Linq;
using System.IO;//from   w w  w .jav  a 2  s .co  m
using System.Globalization;
using System.Diagnostics.CodeAnalysis;
using System.Collections.Generic;
using System;

public class Main{
        /// ------------------------------------------------------------------------------------
		/// <summary>
		/// Find a difference in two strings.
		/// </summary>
		/// <param name="str1">first string to compare</param>
		/// <param name="str2">second string to compare</param>
		/// <param name="ichMin">the min of the difference that has already been found</param>
		/// <param name="ichLim1">The index of the limit of the difference in the 1st string</param>
		/// <param name="ichLim2">The index of the limit of the difference in the 2nd string</param>
		/// ------------------------------------------------------------------------------------
		private static void FindStringDifferenceLimits(string str1, string str2, int ichMin, out int ichLim1, out int ichLim2)
		{
			ichLim1 = str1.Length;
			ichLim2 = str2.Length;
			// look backwards through the strings for the end of the difference. Do not
			// look past the start of the difference which has already been found.
			while (ichLim1 > ichMin && ichLim2 > ichMin)
			{
				if (str1[ichLim1 - 1] != str2[ichLim2 - 1])
					return;
				--ichLim1;
				--ichLim2;
			}
		}
}

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