Topic: stack-problem / Level: advanced

• 2001. Write a program to implement a k-stacks data structure using a single array.
• 2002. Design an efficient algorithm to calculate the maximum sum of elements in a stack after a sequence of push, pop, and peek operations.
• 2003. Implement a dynamic multi-stack system where each stack can grow or shrink dynamically without wasting space.
• 2004. Write a program to solve the skyline problem using a stack-based approach.
• 2005. Design a stack-based algorithm to merge two sorted stacks into one sorted stack in O(n) time.
• 2006. Create a stack-based solution for solving the interval scheduling maximization problem.
• 2007. Implement an efficient algorithm for evaluating infix expressions without converting them to postfix or prefix.
• 2008. Write a program to simulate a stack-based system for solving the histogram water trapping problem in O(n) time.
• 2009. Design a stack-based algorithm to find the maximum product of any two elements in a stack.
• 2010. Implement a multi-level stack memory allocator to simulate memory allocation in an operating system.
• 2011. Write a stack-based algorithm to detect strongly connected components in a directed graph (Tarjans algorithm).
• 2012. Design a stack-based solution to generate all possible combinations of balanced parentheses for a given number n.
• 2013. Write a program to simulate a two-stack system where one stack keeps track of the minimum element at all times.
• 2014. Implement an efficient algorithm to solve the problem of finding the maximum area under a histogram with a stack.
• 2015. Write a program to simulate a stack-based approach to solve the N-Queens problem.
• 2016. Create a function that merges k sorted stacks into one sorted stack with minimal auxiliary space.
• 2017. Design a stack-based algorithm to find the k-th largest element in an unsorted stack.
• 2018. Implement a stack-based solution for solving the 0-1 knapsack problem using dynamic programming.
• 2019. Write a stack-based algorithm to simulate a system for scheduling jobs based on their dependencies using topological sort.
• 2020. Create a program to simulate a stack-based solution for solving the minimum cost to connect all points problem.
• 2021. Design a stack-based approach for finding the shortest path in a weighted graph using Dijkstra’s algorithm.
• 2022. Implement a stack-based algorithm to solve the balanced binary tree reconstruction problem.
• 2023. Write a stack-based solution to solve the palindrome partitioning problem for a given string.
• 2024. Design a function to evaluate a boolean circuit represented as a graph using a stack.
• 2025. Create a stack-based solution for solving the maximum rectangle in a binary matrix problem.
• 2026. Implement a dynamic stack system that allows O(1) access to the k-th element from the top of the stack.
• 2027. Write a stack-based approach for solving the word ladder problem using a depth-first search.
• 2028. Design a stack-based solution to calculate the maximum sum of elements in a stack after a series of random updates.
• 2029. Implement a stack-based algorithm for detecting cycles in a directed graph.
• 2030. Write a stack-based solution to simulate an LRU (Least Recently Used) cache using two stacks.
• 2031. Design a function to solve the problem of finding the k-th smallest element in a stack in O(log k) time.
• 2032. Create a stack-based solution for generating all permutations of a string using recursion.
• 2033. Implement an efficient stack-based algorithm to calculate the maximum sum of non-adjacent elements in a stack.
• 2034. Write a program to simulate a stack-based system for solving the partition equal subset sum problem.
• 2035. Design a stack-based approach to solve the problem of finding the largest rectangular submatrix with all 1s in a binary matrix.
• 2036. Implement a stack-based solution for solving the longest increasing path in a matrix using depth-first search.
• 2037. Write a stack-based solution to solve the problem of reversing a stack without using recursion.
• 2038. Create a stack-based system for solving the interval partitioning problem with constraints.
• 2039. Design a stack-based algorithm to solve the problem of finding the smallest element in a stack of unsorted elements.
• 2040. Write a stack-based solution to implement a queue using two stacks with O(1) amortized time for each operation.
• 2041. Implement a stack-based approach for solving the partition problem where the stack elements must be divided into two equal-sum subsets.
• 2042. Write a program to simulate a stack-based solution for solving the problem of finding the longest valid parentheses substring.
• 2043. Create a function that uses a stack to solve the problem of finding the k-th largest element in a sliding window.
• 2044. Design a stack-based algorithm for solving the 2-SAT (2 satisfiability) problem.
• 2045. Implement a stack-based solution for solving the coin change problem with minimal coins used.
• 2046. Write a program to simulate a stack-based approach to solve the merge intervals problem in O(n log n) time.
• 2047. Design a stack-based system for evaluating arithmetic expressions that include variables and function calls.
• 2048. Create a function that uses a stack to solve the problem of finding the number of ways to paint a fence with n posts and k colors.
• 2049. Write a stack-based algorithm to simulate a system for allocating disk space in a multi-threaded environment.
• 2050. Implement a stack-based approach to find the maximum circular subarray sum in a stack.

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