Ovidio Function to Leet Speak

src/main/java/org/fundacionjala/coding/ovidio/ToLeetSpeak.java

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+package org.fundacionjala.coding.ovidio;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Your task is to write function toLeetSpeak that converts a regular english sentence to Leetspeak.
+ * More about LeetSpeak You can read at wiki -> https://en.wikipedia.org/wiki/Leet
+ * Consider only uppercase letters (no lowercase letters, no numbers) and spaces.
+ * For example:
+ * toLeetSpeak("LEET") returns "1337"
+ * {
+ * A : '@',
+ * B : '8',
+ * C : '(',
+ * D : 'D',
+ * E : '3',
+ * F : 'F',
+ * G : '6',
+ * H : '#',
+ * I : '!',
+ * J : 'J',
+ * K : 'K',
+ * L : '1',
+ * M : 'M',
+ * N : 'N',
+ * O : '0',
+ * P : 'P',
+ * Q : 'Q',
+ * R : 'R',
+ * S : '$',
+ * T : '7',
+ * U : 'U',
+ * V : 'V',
+ * W : 'W',
+ * X : 'X',
+ * Y : 'Y',
+ * Z : '2'
+ */
+public class ToLeetSpeak {
+
+    /**
+     *
+     */
+    private static final Map<Character, Character> ALPHABET = new HashMap<Character, Character>() {
+        {
+            put(' ', ' ');
+            put('A', '@');
+            put('B', '8');
+            put('C', '(');
+            put('D', 'D');
+            put('E', '3');
+            put('F', 'F');
+            put('G', '6');
+            put('H', '#');
+            put('I', '!');
+            put('J', 'J');
+            put('K', 'K');
+            put('L', '1');
+            put('M', 'M');
+            put('N', 'N');
+            put('O', '0');
+            put('P', 'P');
+            put('Q', 'Q');
+            put('R', 'R');
+            put('S', '$');
+            put('T', '7');
+            put('U', 'U');
+            put('V', 'V');
+            put('W', 'W');
+            put('X', 'X');
+            put('Y', 'Y');
+            put('Z', '2');
+
+        }
+    };
+
+    /**
+     * Method for translation.
+     *
+     * @param speak Receive the sentence.
+     * @return String the translation of speak.
+     */
+    String toLeetSpeak(final String speak) {
+        StringBuilder translation = new StringBuilder();
+        for (Character a : speak.replaceAll("^[^A-Z]", "").toCharArray()) {
+            translation.append(ALPHABET.get(a) == null ? "" : ALPHABET.get(a));
+        }
+        return translation.toString();
+    }
+}

src/test/java/org/fundacionjala/coding/ovidio/ToLeetSpeakTest.java

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+package org.fundacionjala.coding.ovidio;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by Simon on 22/08/2017.
+ */
+public class ToLeetSpeakTest {
+    private ToLeetSpeak toLeetSpeak;
+
+    /**
+     * Execute before each test method.
+     */
+    @Before
+    public void setUp() {
+        toLeetSpeak = new ToLeetSpeak();
+    }
+
+    /**
+     * Example Test.
+     */
+    @Test
+    public void testSomething() {
+        assertEquals("1337", toLeetSpeak.toLeetSpeak("LEET"));
+        assertEquals("(0D3W@R$", toLeetSpeak.toLeetSpeak("CODEWARS"));
+        assertEquals("#3110 W0R1D", toLeetSpeak.toLeetSpeak("HELLO WORLD"));
+        assertEquals("10R3M !P$UM D010R $!7 @M37", toLeetSpeak.toLeetSpeak("LOREM IPSUM DOLOR SIT AMET"));
+        String result = "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG";
+        assertEquals("7#3 QU!(K 8R0WN F0X JUMP$ 0V3R 7#3 1@2Y D06", toLeetSpeak.toLeetSpeak(result));
+    }
+}