Method push

java/Chapter 3/Question3_2/StackWithMin.java:6–9

(int value)

public class StackWithMin extends Stack<NodeWithMin> {
    public void push(int value) {
        int newMin = Math.min(value, min());
        super.push(new NodeWithMin(value, newMin));
    }
    
    public int min() {
    	if (this.isEmpty()) {