Category: Algoexpert questions

Category - All. Pick One. Add Two Numbers. Longest Substring Without Repeating Characters. Median of Two Sorted Arrays. Longest Palindromic Substring. ZigZag Conversion.

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Reverse Integer. String to Integer atoi.

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Palindrome Number. Regular Expression Matching. Container With Most Water. Integer to Roman. Roman to Integer. Longest Common Prefix. Letter Combinations of a Phone Number. Valid Parentheses. Merge Two Sorted Lists. Generate Parentheses.

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Merge k Sorted Lists. Swap Nodes in Pairs. Reverse Nodes in k-Group. Remove Duplicates from Sorted Array.If you are preparing for a coding interview, going through these problems is a must. Topics : 1. Graph 2. Linked List 3.

Dynamic Programming 4. Sorting And Searching 5. Number Theory 7. BIT Manipulation 8. Topological Sort 9. Boggle Find all possible words in a board of characters Bridges in a Graph. Insertion of a node in Linked List On the basis of some constraints 2. Delete a given node in Linked List under given constraints 3. Compare two strings represented as linked lists 4. Merge Sort For Linked Lists Longest Common Subsequence 2.

Longest Increasing Subsequence 3. Edit Distance 4. Minimum Partition 5. Ways to Cover a Distance 6. Longest Path In Matrix 7.

Subset Sum Problem 8. Optimal Strategy for a Game 9. Boolean Parenthesization Problem. Binary Search 2. Search an element in a sorted and rotated array 3. Bubble Sort 4. Insertion Sort 5. Merge Sort 6. Heap Sort Binary Heap 7. Quick Sort 8. Interpolation Search 9. Given a sorted array and a number x, find the pair in array whose sum is closest to x. Find Minimum Depth of a Binary Tree 2.

Maximum Path Sum in a Binary Tree 3.

algoexpert questions

Check whether a binary tree is a full binary tree or not 5. Bottom View Binary Tree 6.My solutions to coding interview problems on Leetcode, Algoexpert, Codewars and other interview preparation websites. Solutions in Python3. These are some of the important interview questions that i've learned using a platform called AlgoExpert.

Add a description, image, and links to the algoexpert topic page so that developers can more easily learn about it. Curate this topic. To associate your repository with the algoexpert topic, visit your repo's landing page and select "manage topics.

Learn more. Skip to content. Here are 14 public repositories matching this topic Language: All Filter by language. Sort options. Star Code Issues Pull requests. Updated Apr 11, Python. Star 4. AlgoExpert data structures and algorithms exercises in python. Updated Dec 2, Python.


Star 1. A visualization tool for various pathfinding algorithms. Updated Dec 15, CSS.

algoexpert questions

Updated Aug 7, Python. Star 0. Visualization Tool for Sorting Algorithms. Updated Jan 15, JavaScript. Algoexpert practice. Updated Feb 7, Python. Updated Apr 10, Python. Tutorial for my original Pathfinding Visualizer project.

Updated Oct 9, JavaScript.What is a Data Structure? A data structure is a way of organizing the data so that the data can be used efficiently. Different kinds of data structures are suited to different kinds of applications, and some are highly specialized to specific tasks. For example, B-trees are particularly well-suited for implementation of databases, while compiler implementations usually use hash tables to look up identifiers. Source: Wiki Page. What are the various operations that can be performed on different Data Structures?

How is an Array different from Linked List? Basic operations of stack are : Push, PopPeek. Mainly the following are basic operations on queue: Enqueue, DequeueFront, Rear The difference between stacks and queues is in removing. In a stack we remove the item the most recently added; in a queue, we remove the item the least recently added. Converting between these notations: Click here. A linked list is a linear data structure like arrays where each element is a separate object.

Each element that is node of a list is comprising of two items — the data and a reference to the next node. Types of Linked List :. Can doubly linked be implemented using a single pointer variable in every node? Doubly linked list can be implemented using a single pointer.

A stack can be implemented using two queues. A queue can be implemented using two stacks. Let queue to be implemented be q and stacks used to implement q be stack1 and stack2. If inorder traversal of a binary tree is sorted, then the binary tree is BST. The idea is to simply do inorder traversal and while traversing keep track of previous key value.

If current key value is greater, then continue, else return false.


See A program to check if a binary tree is BST or not for more details. Delete a given node in a singly linked list Given only a pointer to a node to be deleted in a singly linked list, how do you delete it? Reverse a Linked List Write a function to reverse a linked list. Which data structure is used for dictionary and spell checker? Data Structure for Dictionary and Spell Checker?

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. Writing code in comment? Please use ide. Improved By : shashikantdurge. Load Comments.Preparing for a job interview in Algorithm.

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Below is the list of Algorithm Interview Questions and answers, which can be asked during an Interview for fresher and experience. These top interview questions are divided into two parts are as follows:. Answer: Case 1: If linked list is empty then make the node as head and return it. Answer: We are going to implement the bubble sort algorithm through C language. Answer: Step 1: Since the tree satisfies the max-Heap property, then the largest item is stored at the root node.

Step 2: Remove the root element and put at the end of the array nth position put the last item of the tree heap at the vacant place. Step 3: Reduce the size of the heap by 1 and heap the root element again so that we have the highest element at the root. Step 4: The process is repeated until all the items of the list is sorted. Step 1: If the node is equal to Null, return 0 Step 2: If the node is a leaf node return 1. Step 3: Recursively, find the minimum depth of left and right sub-tree, let it be left Min Depth and right min depth respectively.

Step 4: To get the minimum height of tree rooted at the node, we will take a minimum of left min depth and right min depth and 1 for the root node. This has been a comprehensive guide to the Algorithm Interview Questions and answers so that the candidate can crackdown these Algorithm Interview Questions easily. You may also look at the following articles to learn more —.

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Coding Interview Question - River Sizes

Login details for this Free course will be emailed to you. Please provide your Email ID. Email ID is incorrect.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

I will be adding my solutions to this repository every day starting September 15, Choose the larger. Don't forget to choose the larger between the previous and the new reward!

Keep track of where the last non-zero element was seen. The current max is the max of either the max at previous index, or sum of current index and the max and previous to previous index. Add up to index 0 and that's your answer. How do you check whether your current answer has overflowed, either in positive or negative directions?

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To deal with cycles, keep track of nodes that are currently in the DFS stack. Keep track of node ids and lowest id traversable from a node.

algoexpert questions

Bridge occurs when id of current node is less than lowest node that can be found by the neighbor. Keep track of cycles in pre-requisites by checking if the node you're currently checking is in the stack already. To build array, keep track of the previous index. Look at neighbors and assign yourself the first color available. Then do recursive DFS and count by removing one character at a time and one length at a time. Do the necessary things when you encounter a number, either of the brackets or just a character.

A string can be segmented into words from dictionary if a part of it can be segmented, and the remaining directly exists in the dictionary. Keep track of how many characters you skip, if you skipped all of source string, return Use ending times in the heap to check what the earliest end time is.

Dynamic Programming: For the current index to be part of a square, which previous conditions need to be true? If it forms, calculate its area.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

algoexpert questions

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This is practice project that contains solutions for Coding Questions on AlgoExpert. The truth is that interview questions and algorithms are difficult. Even more difficult is trying to understand the inner workings of a complex algorithm from a book or from a poorly thought-out video shot on your grandma's camera.

AlgoExpert crisp p videos boast crystal-clear audio and are strategically divided into two parts to give you the most comprehensive explanations to questions. That's over 50 hours of content specifically tailored to make interview questions and algorithms easy. Interview preparation is a numbers game that many candidates lose.

AlgoExpert hand-picked 65 of the best interview questions for true preparation. Algorithms are tough to learn on paper. Each and every one of their questions is accompanied by a two-part video explanation to maximize learning. That's over 50 hours of content, all at our fingertips.

Not everyone speaks the same programming language. Understanding how much memory an algorithm uses and how fast it runs is exceedingly important. All of their explanations include a rigorous space-time complexity analysis. Algorithm interviews go beyond just algorithms and data structures. Their interview tips video series gives crucial tips and tricks that helps me stand out.

Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Coding Solutions for AlgoExperts. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again.

Latest commit. Latest commit 42b Feb 25, What is AlgoExpert? Solutions In 5 Languages Not everyone speaks the same programming language. Space-Time Complexity Analyses Understanding how much memory an algorithm uses and how fast it runs is exceedingly important. Experience-Backed Interview Tips Algorithm interviews go beyond just algorithms and data structures.