Merge pull request #4 from EonTechnology/master

Optimize BencodeOutputStream

Author: dampcake

src/main/java/com/dampcake/bencode/BencodeOutputStream.java

@@ -19,7 +19,6 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.nio.charset.Charset;
-import java.util.Locale;
 import java.util.Map;
 import java.util.SortedMap;
 import java.util.TreeMap;
@@ -127,13 +126,23 @@ public void writeDictionary(final Map<?, ?> m) throws IOException {
     private static String encode(final String s) {
         if (s == null) throw new NullPointerException("s cannot be null");
 
-        return String.format(Locale.ENGLISH, "%d%s%s", s.length(), Bencode.SEPARATOR, s);
+        StringBuilder buffer = new StringBuilder();
+        buffer.append(s.length());
+        buffer.append(Bencode.SEPARATOR);
+        buffer.append(s);
+
+        return buffer.toString();
     }
 
     private static String encode(final Number n) {
         if (n == null) throw new NullPointerException("n cannot be null");
 
-        return String.format(Locale.ENGLISH, "%s%d%s", Bencode.NUMBER, n.longValue(), Bencode.TERMINATOR);
+        StringBuilder buffer = new StringBuilder();
+        buffer.append(Bencode.NUMBER);
+        buffer.append(n.longValue());
+        buffer.append(Bencode.TERMINATOR);
+
+        return buffer.toString();
     }
 
     private static String encode(final Iterable<?> l) {