Find middle characters for odd and even words.

src/main/java/org/fundacionjala/coding/jose/Middle.java

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+package org.fundacionjala.coding.jose;
+
+/**
+ * Created by JoseTorrez on 9/4/2017.
+ * You are going to be given a word. Your job is to return the middle character of the word. If the word's length
+ * is odd, return the middle character. If the word's length is even, return the middle 2 characters.
+ */
+public class Middle {
+
+    /**
+     * This method get the middle of a word.
+     *
+     * @param word String received.
+     * @return subWord String.
+     */
+    public String getMiddle(String word) {
+        String subWord = "";
+        int length = word.length();
+        int half = length / 2;
+        if (length % 2 == 0) {
+            subWord = word.substring(half - 1, half + 1);
+        } else {
+            subWord = word.substring(half, half + 1);
+        }
+        return subWord;
+    }
+}

src/test/java/org/fundacionjala/coding/jose/MiddleTest.java

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+package org.fundacionjala.coding.jose;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by JoseTorrez on 9/4/2017.
+ */
+public class MiddleTest {
+
+    private Middle middle;
+
+    /**
+     * Initializer.
+     */
+    @Before
+    public void setUp() {
+        middle = new Middle();
+
+    }
+
+    /**
+     * Test for even number of characters.
+     */
+    @Test
+    public void evenTests() {
+        assertEquals("es", middle.getMiddle("test"));
+        assertEquals("dd", middle.getMiddle("middle"));
+    }
+
+    /**
+     * Test for odd numbers of characters.
+     */
+    @Test
+    public void oddTests() {
+        assertEquals("t", middle.getMiddle("testing"));
+        assertEquals("A", middle.getMiddle("A"));
+    }
+
+    /**
+     * Test for a long even number of characters.
+     */
+    @Test
+    public void longEvenTest() {
+        assertEquals("e", middle.getMiddle("thisisalongsequenceofword"));
+        assertEquals("e", middle.getMiddle("anotherwordforthistestofmiddlecharacter"));
+    }
+
+    /**
+     * Test for a long odd number of characters.
+     */
+    @Test
+    public void longOddTest() {
+        assertEquals("eq", middle.getMiddle("thisisalongsequenceofwords"));
+        assertEquals("es", middle.getMiddle("anotherwordforthistestofmiddlecharacters"));
+    }
+
+}