Merge pull request #70 from matthewmorgan/new-exercise-pangram

Add new exercise pangram

config.json

@@ -7,6 +7,7 @@
     "etl",
     "nucleotide-count",
     "word-count",
+    "pangram",
     "anagram",
     "hamming",
     "bob",

pangram/build.gradle

@@ -0,0 +1,11 @@
+apply plugin: "java"
+apply plugin: "eclipse"
+apply plugin: "idea"
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  testCompile "junit:junit:4.10"
+}

pangram/src/example/java/Pangrams.java

@@ -0,0 +1,12 @@
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+public class Pangrams {
+    private static final int alphaLength = 26;
+
+    public static boolean isPangram(String input){
+        return Arrays.stream(input.replaceAll("[^a-zA-Z]","").toLowerCase().split(""))
+                .collect(Collectors.toSet())
+                .size() == alphaLength;
+    }
+}

pangram/src/test/java/PangramTest.java

@@ -0,0 +1,33 @@
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
+
+public class PangramTest {
+
+    @Test
+    public void emptySentence() {
+        assertFalse(Pangrams.isPangram(""));
+    }
+
+    @Test
+    public void testLowercasePangram() {
+        assertTrue(Pangrams.isPangram("the quick brown fox jumps over the lazy dog"));
+    }
+
+    @Test
+    public void missingCharacterX() {
+        assertFalse(Pangrams.isPangram("a quick movement of the enemy will jeopardize five gunboats"));
+    }
+
+    @Test
+    public void mixedCaseAndPunctuation() {
+        assertTrue(Pangrams.isPangram("\"Five quacking Zephyrs jolt my wax bed.\""));
+    }
+
+    @Test
+    public void nonAsciiCharacters() {
+        assertTrue(Pangrams.isPangram("Victor jagt zwölf Boxkämpfer quer über den großen Sylter Deich."));
+    }
+
+}

settings.gradle

@@ -13,6 +13,7 @@ include 'luhn'
 include 'meetup'
 include 'nucleotide-count'
 include 'octal'
+include 'pangram'
 include 'pascals-triangle'
 include 'phone-number'
 include 'pig-latin'