reverse string

2 files changed, 14 insertions, 1 deletions

diff --git a/src/Q1/ReversedSentence.java b/src/Q1/ReversedSentence.java
index d604b5e..352e12c 100644
--- a/src/Q1/ReversedSentence.java
+++ b/src/Q1/ReversedSentence.java
@@ -13,7 +13,12 @@ public class ReversedSentence {
   }
 
   public static String reverseByCharacter(String s) {
-    return "";
+    char[] result = new char[s.length()];
+    int length = s.length();
+
+    for (int i = 0; i < length; i++) result[length - i - 1] = s.charAt(i);
+
+    return new String(result);
   }
 
   public static String reverseByWord(String s) {
diff --git a/src/Q1/ReversedSentenceTest.java b/src/Q1/ReversedSentenceTest.java
index 75d809d..5317391 100644
--- a/src/Q1/ReversedSentenceTest.java
+++ b/src/Q1/ReversedSentenceTest.java
@@ -6,8 +6,11 @@ import junit.framework.TestCase;
 import junit.framework.TestSuite;
 
 public class ReversedSentenceTest extends TestCase {
+  private ReversedSentence subject;
+
   public ReversedSentenceTest(String testName) {
     super(testName);
+    this.subject = new ReversedSentence();
   }
 
   public static Test suite() {
@@ -17,4 +20,9 @@ public class ReversedSentenceTest extends TestCase {
   public void testTruthy() {
     assertEquals(true, true);
   }
+
+  public void testReverseByCharacter() {
+    assertEquals(
+        "bmal elttil a dah yram", ReversedSentence.reverseByCharacter("mary had a little lamb"));
+  }
 }