Initial data commit

Task/Parsing-RPN-calculator-algorithm/Groovy/parsing-rpn-calculator-algorithm-1.groovy

@@ -0,0 +1,19 @@
+def evaluateRPN(expression) {
+    def stack = [] as Stack
+    def binaryOp = { action -> return { action.call(stack.pop(), stack.pop()) } }
+    def actions = [
+        '+': binaryOp { a, b -> b + a },
+        '-': binaryOp { a, b -> b - a },
+        '*': binaryOp { a, b -> b * a },
+        '/': binaryOp { a, b -> b / a },
+        '^': binaryOp { a, b -> b ** a }
+    ]
+    expression.split(' ').each { item ->
+        def action = actions[item] ?: { item as BigDecimal }
+        stack.push(action.call())
+
+        println "$item: $stack"
+    }
+    assert stack.size() == 1 : "Unbalanced Expression: $expression ($stack)"
+    stack.pop()
+}

Task/Parsing-RPN-calculator-algorithm/Groovy/parsing-rpn-calculator-algorithm-2.groovy

@@ -0,0 +1 @@
+println evaluateRPN('3 4 2 * 1 5 - 2 3 ^ ^ / +')