栈·状态模式

简化路径

Simplify a Unix-style path by transforming it into its canonical form using stack-based state management.

柱状图中最大的矩形

Find the maximal rectangular area in a histogram using stack-based state management for precise bar tracking and width c…

逆波兰表达式求值

Compute the result of an arithmetic expression in Reverse Polish Notation using a stack to manage operands efficiently.

最小栈

Design a stack with O(1) operations to push, pop, retrieve the top element, and get the minimum element in constant time…

基本计算器

Implement a basic calculator to evaluate mathematical expressions, ensuring correct evaluation with stack-based manageme…

用队列实现栈

This problem tests your ability to simulate a LIFO stack using two queues while preserving all standard stack operations…

基本计算器 II

Basic Calculator II evaluates a mathematical expression with operators and integers, handling basic arithmetic with prec…

用栈实现队列

Implement a queue using two stacks, focusing on stack-based state management to achieve FIFO behavior in a queue.

去除重复字母

Remove duplicate letters from a string to produce the lexicographically smallest result using stack-based state manageme…

迷你语法分析器

Deserialize a nested list string using stack-based state management, handling integers and nested lists with depth-first…

文件的最长绝对路径

Find the length of the longest absolute file path in a filesystem string using stack-based depth tracking efficiently.

字符串解码

Decode a nested encoded string using stack-based state management, handling repeated patterns efficiently with recursion…

移掉 K 位数字

Remove K Digits requires selecting which digits to drop using a monotonic stack for the smallest possible integer result…

下一个更大元素 II

Solve the Next Greater Element II problem by using a stack-based state management approach for circular arrays.

标签验证器

The Tag Validator problem involves validating a code snippet by parsing through tags using a stack-based state managemen…

函数的独占时间

Solve the 'Exclusive Time of Functions' problem using stack-based state management for accurate function execution time …

棒球比赛

Simulate baseball score operations using a stack-based approach to compute the final score after all operations.

原子的数量

Compute the exact count of each atom in a chemical formula using stack-based state management and hashing techniques eff…

小行星碰撞

Determine the final positions of moving asteroids using a stack-based simulation for efficient collision resolution in l…

Lisp 语法解析

Parse Lisp expressions using stack-based state management to evaluate variables and operations.

每日温度

In the Daily Temperatures problem, you need to find out how many days to wait for a warmer temperature based on given da…

最多能完成排序的块 II

Determine the maximum number of chunks you can split an array into so that sorting each chunk results in a fully sorted …

最多能完成排序的块

The Max Chunks To Make Sorted problem requires you to split an array into the maximum number of chunks that can be sorte…

基本计算器 IV

Simplify mathematical expressions using stack-based state management, handling variables, operators, and polynomial term…