P6-P15: init

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

P15.java

@@ -0,0 +1,46 @@
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class P15 {
+    public static void main(String[] args) {
+        String filename = "P15.in";
+        
+        int letterCount = 0;
+        int vowelCount = 0;
+        int wordCount = 0;
+        
+        try (BufferedReader br = new BufferedReader(new FileReader(filename))) {
+            int cint;
+            boolean eating = true;
+
+            while ((cint = br.read()) != -1) {
+                char c = (char) cint;
+                
+                if (Character.isLetter(c)) {
+                    eating = false;
+                    letterCount++;
+
+                    if (isVowel(Character.toLowerCase(c))) {
+                        vowelCount++;
+                    }
+                } else {
+                    if (!eating) {
+                        eating = true;
+                        wordCount++;
+                    }
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        
+        System.out.println("Letter count: " + letterCount);
+        System.out.println("Vowel count: " + vowelCount);
+        System.out.println("Word count: " + wordCount);
+    }
+    
+    private static boolean isVowel(char c) {
+        return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
+    }
+}