湛蓝与蔚蓝
Stack
标题
列 1
列 2
列 3
列 4
列 5
列 6
列 7
#
Title
Solution
Time
Space
Difficulty
Tag
Note
0020
Valid Parentheses
C++ Python
O(n)
O(n)
Easy
0032
Longest Valid Parentheses
C++ Python
O(n)
O(1)
Hard
0071
Simplify Path
C++ Python
O(n)
O(n)
Medium
0084
Largest Rectangle in Histogram
C++ Python
O(n)
O(n)
Hard
Mono Stack, DP
0085
Maximal Rectangle
C++ Python
O(m * n)
O(n)
Hard
EPI
Mono Stack
0101
Symmetric Tree
C++ Python
O(n)
O(h)
Easy
0150
Evaluate Reverse Polish Notation
C++ Python
O(n)
O(n)
Medium
0155
Min Stack
C++ Python
O(n)
O(1)
Easy
0224
Basic Calculator
C++ Python
O(n)
O(n)
Hard
0227
Basic Calculator II
C++ Python
O(n)
O(n)
Medium
0232
Implement Queue using Stacks
C++ Python
O(1), amortized
O(n)
Easy
EPI, LintCode
0255
Verify Preorder Sequence in Binary Search Tree
C++ Python
O(n)
O(1)
Medium
🔒
0272
Closest Binary Search Tree Value II
C++ Python
O(h + k)
O(h)
Hard
🔒
0331
Verify Preorder Serialization of a Binary Tree
C++ Python
O(n)
O(1)
Medium
0341
Flatten Nested List Iterator
C++ Python
O(n)
O(h)
Medium
🔒
Iterator
0385
Mini Parser
C++ Python
O(n)
O(h)
Medium
0394
Decode String
C++ Python
O(n)
O(n)
Medium
0439
Ternary Expression Parser
C++ Python
O(n)
O(1)
Medium
🔒
0456
132 Pattern
C++ Python
O(n)
O(n)
Medium
0496
Next Greater Element I
C++ Python
O(m + n)
O(m + n)
Easy
Mono Stack
0503
Next Greater Element II
C++ Python
O(n)
O(n)
Medium
Mono Stack
0636
Exclusive Time of Functions
C++ Python
O(n)
O(n)
Medium
0682
Baseball Game
C++ Python
O(n)
O(n)
Easy
0726
Number of Atoms
C++ Python
O(n)
O(n)
Hard
0735
Asteroid Collision
C++ Python
O(n)
O(n)
Medium
0736
Parse Lisp Expression
C++ Python
O(n^2)
O(n^2)
Hard
0739
Daily Temperatures
C++ Python
O(n)
O(n)
Medium
0770
Basic Calculator IV
C++ Python
add: O(d * t) sub: O(d * t) mul: O(d * t^2) eval: O(d * t) to_list: O(d * tlogt)
O(e + d * t)
Hard
0772
Basic Calculator III
C++ Python
O(n)
O(n)
Hard
0853
Car Fleet
C++ Python
O(nlogn)
O(n)
Medium
0856
Score of Parentheses
C++ Python
O(n)
O(1)
Medium
0872
Leaf-Similar Trees
C++ Python
O(n)
O(h)
Easy
0895
Maximum Frequency Stack
C++ Python
O(1)
O(n)
Hard
Hash
0901
Online Stock Span
C++ Python
O(n)
O(n)
Medium
0921
Minimum Add to Make Parentheses Valid
C++ Python
O(n)
O(1)
Medium
0946
Validate Stack Sequences
C++ Python
O(n)
O(n)
Medium
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