A stack is a last in, first out (LIFO) abstract data type and data structure. Perhaps the most common use of stacks is to store subroutine arguments and return addresses.
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Stack with a minimum
A practice interview question:
How would you design a stack which, in addition to push and pop, also has a function getMin which returns the minimum element? Push, pop and min should all operate ...
2
votes
2answers
81 views
Superior improved stack implementation using a linked list
Please review my hopefully improved stack implementation
As suggested by some answers to my previous code, some of the functions can be overloaded to provide versions of return by value, return by ...
9
votes
3answers
441 views
Implementation of an Stack without Linked Lists in C
I'm a beginning C programmer. As an exercise, I have attempted to implement a stack of strings in C. This is my first real exercise working with pointers. I looked at some other similar posts on here, ...
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3answers
379 views
Improved stack implementation using a linked list
Since my original Stack implementation has lots of bugs that I did not notice, I thought I would recreate and try to improve it. Please review this version.
Note ...
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votes
3answers
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2answers
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3
votes
2answers
101 views
Parenthesis checker
I am working on a parenthesis checker program in Java that reads in a text stream from standard input and uses a stack to determine whether or not its parentheses are properly balanced. For example, ...
8
votes
2answers
210 views
Implement a stack using a linked list
I am to implement a stack in C using a linked list. My code is below. My design:
I use stack_ prefix to each function, and each function has a ...
7
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2answers
182 views
Linked list implementation of a stack
I am working on a basic linked list implementation of a stack of ItemType (currently set to double but can be changed) values. The stack code will then be used in a ...
3
votes
1answer
98 views
XML Writer in C++ - Updated
I recently posted about a basic XML writer in C++ and got a lot of great feedback. Well, I'm back with an updated version of the XML writer that is a bit less basic, but hope it's better than the ...
2
votes
1answer
292 views
Generic Stack implementation in C-style C++
I implemented generic stack in C. Seems to work fine. It doesn't work for strings, though.
It was compiled using Visual C++.
Implementation:
...
2
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2answers
765 views
Unsafe Stack in C#
I was interested to see if it was possible to implement an unsafe stack in C#, so I wrote this:
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3answers
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6answers
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4answers
420 views
Array Implementation of Stack
I've implemented the basic logic of a stack data structure. How can I make this code more generic? Is there any better way to display the stack contents?
StackMethods.java
...
5
votes
4answers
111 views
Dynamically-sized stack - follow-up 3
Follow up of - Dynamically-sized stack - follow-up 2
I've took the tips given to me, and what I did now is:
Use same case type for type stack and it's functions
Returning 1 if push failed due to an ...
6
votes
3answers
2k views
Stack implementation using a linked list
To understand the concept, I implemented the stack operations using a linked list. Please review the code and tell me your suggestions.
Node.java
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6
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1answer
61 views
Dynamically-sized stack - follow-up 2
Follow up of - Dynamically-sized stack - follow up
I've took the tips given to me, and what I did now is:
changing the function names to have a prefix
making the ...
4
votes
2answers
135 views
Dynamically-sized stack - follow up
Follow up of - Which is a better implementation of a stack data structure (based on an array)?
Please review my stack implementation from before. I've made it dynamically sized if needed and made a ...
2
votes
1answer
67 views
Which is a better implementation of a stack data structure (based on an array)?
This is a version I made:
...
4
votes
1answer
85 views
Stack-based mini-stack
I've created a MiniStack to assist in removing recursion from routines using a manual stack.
Obviously if the stack is an object it lives on the heap and its ...
6
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1answer
59 views
Traversal of descendants using stack [closed]
I have a type Unit which has a property ChildUnits that returns the children of the unit instance, as a ...
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4answers
364 views
LinkedList to be used in a stack or queue
This all works. Just wanted to make sure I didn't miss anything. Coming from C++ and working my way through Algorithms, 4th ed. Here is my LinkedList class:
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votes
2answers
194 views
Layer Stack class to practice std::shared_ptr
The following three source files is to define and test a class StackLayer.
While it was written in a need for scalable layer-based architecture design, it was also ...
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votes
4answers
453 views
Stack implementation using only one queue in C
We start with an empty queue. For the push operation we simply insert the value to be pushed into the queue.
The pop operation needs some manipulation. When we need to pop from the stack (simulated ...
4
votes
2answers
179 views
Stock span problem
The stock span problem is a financial problem where we have a series of n daily price quotes for a stock and we need to calculate span of stock’s price for all n days.
The span Si of the stock’s ...
6
votes
4answers
195 views
Stack with 'getMinimum' operation
Design a Data Structure SpecialStack that supports all the stack operations like push(), pop(), isEmpty(), isFull() and an additional operation getMin() which should return minimum element from the ...
4
votes
1answer
91 views
Stack with “getMiddle” and “deleteMiddle” operation
Looking for code review, optimizations and best practices.
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4
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1answer
80 views
Implement stack using a linked list
I am trying to implement Stack using a linked list. Looking for code-review, best practices and optimizations.
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1answer
106 views
Find the Next Greatest Element
Given an array, print the Next Greater Element (NGE) for every element. The Next Greater Element for an element x is the first greater element on the right side of x in array. Elements for which no ...
6
votes
2answers
401 views
Stack challenge - improving memory consumption
I am working on this problem:
Stacks
Imagine, that you are employed by a software development company. You
work now on the famous "D++ project", which is devoted to the creation
of a new ...
3
votes
2answers
241 views
Class that implements a queue using two stacks
I am looking for a review of my code that implements a MyQueue class which implements a queue using two stacks.
...
3
votes
2answers
174 views
How is my Java code for stack implementation?
The following example shows how to implement stack by creating user defined push() method for entering elements and pop() method ...
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6answers
2k views
Implementing a Stack in Java for Technical Interview
This code is based off the Stack implementation in Chapter 3 of Cracking The Coding Interview. I modified the code to make it compile and give me the correct output. I'd appreciate any feedback on ...
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votes
2answers
120 views
Stack implementation using a queue
I've implemented a stack using a queue.
Time complexity:
\$O(n)\$ - push(), where n is the number of elements in the queue
\$O(1)\$ - ...
6
votes
2answers
1k views
STL Stack Implementation
I implemented std::stack from the STL for deeper understanding of the language and memory since I still am only a beginner. I implemented the stack using a singly ...
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votes
3answers
223 views
How does this naive stack implementation look?
Consider this naive stack implementation in Elixir:
...
5
votes
1answer
160 views
Managing People in a SimCity Clone
So I am working through a few different game ideas as I learn programming, and I could definitely use some feedback on my latest project. This is a simple SimCity clone. So far I have created a City ...
7
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3answers
7k views
Stack implementation using an array
I am trying a stack implementation using an array. I want to know if this approach is OK or if there is a logical problem. This program is working fine.
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3
votes
1answer
98 views
Infix to postix conversion
I'm looking for code review, optimizations and best practices.
Also verifying complexity to be O(n), where n is the string length.
...
9
votes
3answers
3k views
Implementation of stack using pointers
Please review my code and let me know how I can possibly improve it.
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1answer
417 views
Stack implemented using linked list in x86_64 assembly
I wrote a stack implementation using a singly linked list in x86_64 assembly. This stack supports the usual push/pop operations ...
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2answers
493 views
Balanced parentheses
Given an expression string exp, write a program to examine whether the
pairs and the orders of
"{","}","(",")","[","]"
are correct in exp.
For ...
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votes
7answers
4k views
Check for balanced parentheses
Given an expression string exp, write a program to examine whether the
pairs and the orders of
"{","}","(",")","[","]"
are correct in exp.
For ...
6
votes
1answer
189 views
Functional, but not recursive, tree traversal
To learn tree traversal i implemented os.walk, tail-recursive and stack-based. Unfortunately Python doesn't support tail call optimization. How do i rewrite my ...
4
votes
2answers
199 views
Retrieve min from stack in O(1)
I wrote some Python code to solve the following problem. I'm curious to see if someone else can find a better solution, or critique my solution.
How would you design a stack which, in addition to ...
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votes
2answers
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3
votes
2answers
140 views
Dynamic stack in C - new version
Not long ago, I posted this dynamic stack for review. Now I wrote a new version, which is hopefully a better one.
Please take a look and let me know how I could improve performance and increase code ...
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votes
3answers
703 views
Dynamic stack implementation
I wrote this code for a dynamic stack and would like to know what would be better if done differently.
It can increase memory by a percentage and/or fixed value when needed. It can also be set to not ...
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votes
2answers
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