多伦多Apple面试必刷:LeetCode 155 最小栈的Python最优解
最近在准备多伦多Apple的算法面试?LeetCode 155最小栈绝对是高频考点之一! 今天分享一个Python最优解,帮你轻松拿下这道题!
class MinStack:
def __init__(self):
self.stack = []
self.min_stack = [] # 辅助栈存储最小值
def push(self, val: int) -> None:
self.stack.append(val)
if not self.min_stack or val <= self.min_stack:
self.min_stack.append(val)
def pop(self) -> None:
if self.stack.pop() == self.min_stack:
self.min_stack.pop()
def top(self) -> int:
return self.stack
def getMin(self) -> int:
return self.min_stack
核心思路:用辅助栈同步记录最小值,保证O(1)时间获取!面试官最爱问优化点,这个解法绝对满分
#多伦多Tech #Apple面试 #LeetCode刷题
Challenge Toronto Apple Interviews: Conquer LeetCode 155 Min Stack with Python
Hey Toronto coders! 这道LeetCode 155最小栈是Apple面试经典题,Python解法看这里
class MinStack:
def __init__(self):
self.stack = []
self.min_stack = [] # 专治最小值焦虑!
def push(self, val):
self.stack.append(val)
if not self.min_stack or val <= self.min_stack:
self.min_stack.append(val)
def pop(self):
if self.stack.pop() == self.min_stack:
self.min_stack.pop()
def top(self):
return self.stack
def getMin(self):
return self.min_stack
Pro Tip: 辅助栈的空间换时间策略是面试加分项!多伦多的Apple面试官超爱问细节哦~
#TorontoTech #AppleCodingInterview #Python
多伦多Tech达人分享:Apple面试高频题LeetCode 155的Python代码艺术
作为面过多伦多Apple的过来人,LeetCode 155最小栈的Python解法必须优雅!
class MinStack:
def __init__(self):
self.stack = []
self.min_stack = [] # 最小值的"时光机"
def push(self, val):
self.stack.append(val)
if not self.min_stack or val <= self.min_stack:
self.min_stack.append(val)
def pop(self):
if self.stack == self.min_stack:
self.min_stack.pop()
self.stack.pop()
def top(self):
return self.stack
def getMin(self):
return self.min_stack
Why This Works?
min_stack
像存档点,永远指向当前最小值- 每个操作都是O(1),面试时记得强调这点!
#加拿大程序员 #多伦多求职 #算法面试
Toronto面试通关秘籍:LeetCode 155最小栈的Python极致解法
想在多伦多科技圈脱颖而出?Apple面试必考的LeetCode 155,用Python这样解才够飒!
class MinStack:
def __init__(self):
self.stack = []
self.min_stack = [] # 双栈配合,天下无敌
def push(self, val):
self.stack.append(val)
if not self.min_stack or val <= self.min_stack:
self.min_stack.append(val)
def pop(self):
if self.stack.pop() == self.min_stack:
self.min_stack.pop()
def top(self):
return self.stack
def getMin(self):
return self.min_stack
面试技巧:
- 先解释暴力解法(O(n)找min)的缺点
- 再引出辅助栈的优化思路
- 最后用Python代码降维打击!
#TorontoJobHunt #Tech面试 #Python编程
加拿大程序员在多伦多:用Python秒杀Apple面试题LeetCode 155
刚通过多伦多Apple面试的干货分享!LeetCode 155最小栈的Python解法,直接抄作业吧
class MinStack:
def __init__(self):
self.stack = []
self.min_stack = [] # 最小值的"守护者"
def push(self, val):
self.stack.append(val)
if not self.min_stack or val <= self.min_stack:
self.min_stack.append(val)
def pop(self):
if self.stack == self.min_stack:
self.min_stack.pop()
self.stack.pop()
def top(self):
return self.stack
def getMin(self):
return self.min_stack
关键考点:
- 为什么不能用单个变量存最小值?
- 辅助栈如何解决pop后的min更新问题?
祝大家面试顺利!下次分享多伦多Google真题~
#CanadianCoders #TorontoTechLife #算法秘籍