class MinStack(object):
def __init__(self):
"""
initialize your data structure here.
"""
self._elem=[]
def push(self, x):
"""
:type x: int
:rtype: None
"""
self._elem.append(x)
def pop(self):
"""
:rtype: None
"""
return self._elem.pop()
def top(self):
"""
:rtype: int
"""
return self._elem[-1]
def getMin(self):
"""
:rtype: int
"""
return min(self._elem)
# Your MinStack object will be instantiated and called as such:
# obj = MinStack()
# obj.push(x)
# obj.pop()
# param_3 = obj.top()
# param_4 = obj.getMin()
执行用时 :660 ms, 在所有 python 提交中击败了24.93%的用户
内存消耗 :15.5 MB, 在所有 python 提交中击败了19.17%的用户
——2019.11.2