数据结构之自定义计数器

计数器Counter

代码示例

class Counter(object):
    """Models a counter。"""

    # Class variable
    instance = 0

    # Constructor
    def __init__(self):
        """Sets up the counter"""
        Counter.instance += 1
        self.reset()        # 初始化对象，

    # Mutator methods   # 修改器
    def reset(self):
        """Sets the Counter to 0"""
        self._value = 0

    def increment(self, amount