[Sync Iteration] java/squeaky-clean/1

solutions/java/squeaky-clean/1/src/main/java/SqueakyClean.java

@@ -0,0 +1,28 @@
+class SqueakyClean {
+    static String clean(String identifier) {
+        StringBuilder result = new StringBuilder();
+        boolean toUpper = false;
+        String replace = identifier.replace(" ", "_")
+                                .replace("4", "a")
+                                .replace("3", "e")
+                                .replace("0", "o")
+                                .replace("1", "l")
+                                .replace("7", "t");
+        for (char c : replace.toCharArray()){
+            if (!Character.isLetter(c) && c != '_' && c != '-') {
+                continue;
+            }
+            if (c == '-') {
+                toUpper = true;
+            } else {
+                if (toUpper) {
+                    result.append(Character.toUpperCase(c));
+                    toUpper = false;
+                } else {
+                    result.append(c);
+                }
+            }
+        }
+        return result.toString();
+    }
+}