Fixed #25. Added support for reverse function

src/main/java/strman/Strman.java

@@ -774,6 +774,17 @@ public abstract class Strman {
         return value.toLowerCase().replace(search.toLowerCase(), newValue);
     }
 
+    /**
+     * Reverse the input String
+     *
+     * @param value The input String
+     * @return Reversed String
+     */
+    public static String reverse(final String value) {
+        validate(value, NULL_STRING_PREDICATE, NULL_STRING_MSG_SUPPLIER);
+        return new StringBuilder(value).reverse().toString();
+    }
+
     public static String decode(final String value, final int digits, final int radix) {
         validate(value, NULL_STRING_PREDICATE, NULL_STRING_MSG_SUPPLIER);
         return Arrays

src/test/java/strman/StrmanTest.java

@@ -592,4 +592,14 @@ public class StrmanTest {
         assertThat(replace("FOO bar", "foo", "bar", false), equalTo("bar bar"));
         assertThat(replace("FOO bar foo", "foo", "bar", false), equalTo("bar bar bar"));
     }
+
+    @Test
+    public void reverse_shouldReverseInputString() throws Exception {
+        assertThat(reverse(""), equalTo(""));
+        assertThat(reverse("foo"), equalTo("oof"));
+        assertThat(reverse("shekhar"), equalTo("rahkehs"));
+        assertThat(reverse("bar"), equalTo("rab"));
+        assertThat(reverse("foo_"), equalTo("_oof"));
+        assertThat(reverse("f"), equalTo("f"));
+    }
 }