TP 07

DEV 3.2/TP07/Prefixe/Prefixe.java

@@ -0,0 +1,34 @@
+import java.util.ArrayDeque;
+
+/**
+ * Arithmetique
+ */
+public class Prefixe {
+    public static void main(String[] args) {
+        ArrayDeque<Node<String>> pile = new ArrayDeque<>();
+
+        for (String arg : args) {
+            try {
+                Integer.parseInt(arg);
+                pile.addFirst(new Node<String>(arg));
+            } catch (NumberFormatException e) {
+                if (pile.size() < 2) {
+                    System.err.println("Invalid stack size.");
+                    return;
+                }
+                
+                Node<String> n2 = pile.pollFirst();
+                Node<String> n1 = pile.pollFirst();
+
+                Node<String> n3 = new Node<String>(arg);
+                n3.addSubNode(n1);
+                n3.addSubNode(n2);
+                
+                pile.addFirst(n3);
+            }
+        }
+
+        pile.pollFirst().showNode();
+        System.out.println("");
+    }
+}