Method push

java/155_Min_Stack.java:44–48

(int x)

    }
    
    public void push(int x) {
        stack.push(x);
        if (minStack.size() == 0 || x <= minStack.peek()) minStack.push(x);
        else minStack.push(minStack.peek());
    }
    
    public void pop() {
        stack.pop();