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