1.Polynominal Calculation
				
				2.Sum of Two Largest Numbers
				
				3.设计Call Router
				
				4.IP Address Range to Countr
				
				5.Design a system collect metrics and data
				
				6.Number of Steps to Reduce a Number to Zero
				
				7.Minimum Moves to Equal Array Elements
				
				8."Binary String Reduction to One Steps Count"
				
				9.Generate Unique Integers Summing to Zero
				
				10."Convert Integer to English Words Representation"
				
				11.Conway's Game of Life: Next State Calculation
				

				12.Generate Array with Unique Integers That Sum to Zero
				
				13.Minimum Moves to Equal Array Elements
				
				14."Binary String Reduction to One Steps Count"
				
				15.Detect Cycle in Linked List and Find Start Node
				
				16.Telephone Number to Letter Combinations
				
				17.Gas Station Circular Route Problem
				
				18.Maximum Subarray Sum
				
				19.Merge K Sorted Linked Lists
				

				20.Calculate the Skyline Contour
				
				21.Largest Magic Square in a Grid
				
				22.Counting Battleships in a Matrix
				
				23.Longest Palindromic Substring in a String
				
				24.Longest Substring Without Repeating Characters
				
				25.pop target value
				
				26.Maximal Network Rank Calculation
				
				27.组成最大正方形
				
				28.Construct Binary Tree from Preorder and Inorder Traversal
				
				29.Sum of Root-To-Leaf Binary Numbers
				
				30.Path Sum II in Binary Tree
				
				31.Check if Binary Tree Has Path Sum
				
				32.Maximum Path Sum in Binary Tree
				
				33.Minimum Operations to Make Array Sums Equal
				
				34.Generating the Longest Happy String with Limited Character Occurrences
				
				35.Maximize Family Groups in a Cinema Seating Arrangement
				
				36.maximum distance between same number in a array
				
				37.Counting Equivalent Domino Pairs
				

				38.seperate string
				
				39.Find_min
				

				40.Number of substrings
				
				41.Longest substring
				
				42.Search in Rotated Sorted Array II
				
				43.Grouping Anagrams in a String Array
				
				44.Search in Rotated Sorted Array
				
				45.Same element
				
				46.Intersection of Two Arrays II
				
				47.Split string
				
				48.Substring even number
				
				49.K array 
				
				50.Square 
				
				51.Product of Array Except Self
				
				52.Number of Islands in a 2D Grid
				
				53."Arrange Numbers to Form the Largest Possible Integer"
				
				54.Reverse Words in a String
				
				55.RemoveCommentsFromCPPCode
				
				56.Find min
				
				57. a string S consisting of N characters 
				
				58.数组去重
				
				59.Find node if exist in a binary tree
				
				60.Minimum number of substrings
				
				61.Implement a Basic Trie with Wildcard Handling
				
				62.Design a File Upload System
				
				63.Optimize Delivery Schedule
				
				64.Simple Coding Problem
				
				65.Technical Domain Expertise Questions
				
				66.Stream Character Processing
				
				67.Remove Duplicate Letters from String
				
				68.Design ChatGPT
				
				69.Design a Buffer Manager
				
				70.Number of Islands
				
				71.Reverse a Linked List from Position m to n
				
				72.Find the target in a rotated sorted integer array.
				
				73.LeetCode Medium Level Problems
				
				74.Subarray Sum Equals K
				
				75.LC 146, 253, 465 Technical Questions
				
				76.Discuss the decision between buying or creating your own solutions.
				
				77.Compare design patterns and cloud service deployment methods.
				
				78.Explain the tradeoffs in the projects you have worked on.
				
				79.Design a User Recommendation Feature
				
				80.Find the Minimum Difference Between Elements of Two Arrays
				
				81.Tree Path Sum
				
				82.Design a Chat System Supporting 1:1 and Group Chat
				
				83.Design Amazon Locker for Automated Parcel Storage and Retrieval
				
				84.Skill Tree Calculation
				
				85.Clean Robot Algorithm
				
				86.Feature Management System Design
				
				87.Binary Search Variation
				
				88.K-sum Problem
				
				89.Print All Files and Subdirectories in a Directory
				
				90.Find the Largest BST Subtree in a Binary Tree
				
				91.Implement Syntax Highlighting
				
				92.Design a Messaging System
				
				93.System Design for Secure File Distribution
				
				94.Object-Oriented Design for File Management System
				
				95.Find next greater number with same set of digits
				
				96.Object-Oriented Design for a Parking Lot
				
				97.Design a LinkedIn-like System
				
				98.Design a Random Number Generator for Dice
				
				99.System Design for URL Shortening Service
				
				100.Graph Problem Similar to LeetCode 787
				
				101.LFU Cache Implementation
				
				102.Forming the Longest Palindrome
				
				103.Design a Library Management System
				
				104.LRU Cache Implementation
				
				105.Symmetry in Linked Lists
				
				106.Object-Oriented Design: Parking Lot
				
				107.Prime Factors
				
				108.Implement a cache object
				
				109.Design a caching system
				
				110.Discuss your experience and the technologies you used based on your resume
				
				111.Design an on-call system with different levels of employee responsibilities
				
				112.Implement a stack using arrays and linked lists
				
				113.Design a stack that supports retrieving the current minimum value with O(1) time complexity
				
				114.Find the Bug in Maximum Subarray Sum
				
				115.Solve a coding problem similar to a LeetCode easy-level question.
				
				116.Design a Todo List
				
				117.Design a Hotel Management System
				
				118.Implement an Iterative O(1) Optimal Algorithm for a Linked List Problem
				
				119.Solve a High-Frequency Problem by Providing the Optimal Solution
				
				120.Optimize a Solution Considering All Characters for a Given Problem Without Using a HashMap
				
				121.Design a Hotel System with a Focus on Concurrency Issues
				
				122.Designing a Notifier System
				
				123.Friendship Relationship Functions
				
				124.Tree Balance Verification
				
				125.Bloom Filter Analysis and Application
				
				126.Binary Period of a Positive Integer
				
				127.Longest Spike in Sequence
				
				128.Symmetric Grid Color Change
				
				129.Generate Parentheses using Depth-First Search (DFS)
				
				130.Word Ladder
				
				131.Edit Distance
				
				132.Number of Islands
				
				133.Trapping Rain Water
				
				134.Topological Sort of a Graph
				
				135.Design a Pet Store System
				
				136.Design a Storage System for a Startup
				
				137.Design a Rate Limiter
				
				138.Improving a Caching Mechanism for URI to Endpoint Translation
				
				139.Efficient Storage for IP to MAC Address Translation
				
				140.Design a LRU Cache