Pastable version of Toggle Hebrew Chars

<pre class='prettyprint' language='cs'>public static class Hebrew
{
    static Dictionary&lt;char, char&gt; mapper = CombineMappers(
        BuildMapper(&quot;×©× ×‘×’×§×›×¢×™×Ÿ×—×œ×š×¦×ž××¤/×¨×“××•×”'×¡×˜×–&quot;, &quot;abcdefghijklmnopqrstuvqxyz&quot;),
        BuildMapper(&quot;tcdsvuzjyhflknobixgp;m.era,&quot;, &quot;××‘×’×“×”×•×–×—×˜×™×›×š×œ×ž×× ×Ÿ×¡×¢×¤×£×¦×¥×§×¨×©×ª&quot;));

public class CharEqualityIgnoreCase : IEqualityComparer&lt;char&gt;
    {
        public static readonly CharEqualityIgnoreCase Default = new CharEqualityIgnoreCase();

static int dist = Math.Abs((int)'A' - (int)'a');

public bool Equals(char x, char y)
        {
            return x == y || (char.IsLetter(x) &amp;&amp; char.IsLetter(y) &amp;&amp; Math.Abs((int)x - (int)y) == dist);
        }

public int GetHashCode(char obj)
        {
            return char.IsLetter(obj) ? char.ToLower(obj).GetHashCode() : obj.GetHashCode();
        }
    }

static Dictionary&lt;char, char&gt; CombineMappers(Dictionary&lt;char, char&gt; mapper1, Dictionary&lt;char, char&gt; mapper2)
    {
        var result = new Dictionary&lt;char, char&gt;(CharEqualityIgnoreCase.Default);

foreach (var pair in mapper1)
        {
            result.Add(pair.Key, pair.Value);
        }

foreach (var pair in mapper2)
        {
            result.Add(pair.Key, pair.Value);
        }

return result;
    }

static Dictionary&lt;char, char&gt; BuildMapper(string src, string dest)
    {
        var result = new Dictionary&lt;char, char&gt;();

for (int i = 0; i &lt; src.Length; i++)
        {
            result[src[i]] = dest[i];
        }

return result;
    }

public static string Toggle(string text)
    {
        var result = new StringBuilder(text.Length);

for (int i = 0; i &lt; text.Length; i++)
        {
            var ch = text[i];
            if (mapper.TryGetValue(ch, out ch) == false)
            {
                ch = text[i];
            }

result.Append(ch);
        }

return result.ToString();
    }
}</pre>
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Pastable version of Toggle Hebrew Chars