Added MatrixPatternResolver Class.

Author: nbhoski

src/main/java/com/mathworks/ci/MatrixPatternResolver.java

@@ -0,0 +1,27 @@
+package com.mathworks.ci;
+/*
+ * Copyright 2019 The MathWorks, Inc.
+ * 
+ * This is Matrix pattern resolver class which is a utility for identifying variables. Either $xyz, ${xyz} or ${a.b} but not $a.b, while ignoring "$$"
+ */
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class MatrixPatternResolver {
+    private String inputString;
+    private static Pattern VARIBLE = Pattern.compile("\\$([A-Za-z0-9_]+|\\{[A-Za-z0-9_.]+\\}|\\$)");
+    
+    public MatrixPatternResolver(String inputString) {
+        this.inputString = inputString;
+    }
+    
+    public String getInputString() {
+        return this.inputString;
+    }
+    
+    public boolean hasVariablePattern() {
+        Matcher m = VARIBLE.matcher(getInputString());
+        return m.find(0);
+    }
+}