SDE Coding and Design Interview Questions

How to behave in interviews

• Prepare for Your Google Interview: Leadership

Content Sources

• 11 Essential Coding Interview Questions - Online Course
• CS Dojo - Youtube Channel
• Irfan Baqui - Youtube Channel
• Back To Back SWE - Youtube Channel
• Grokking the Object Oriented Design Interview - Online Course
• Leetcode Problems - Online Coding Platform
• InterviewBit Problems - Online Coding Platform
• Cracking The Coding Interview - Book
• Big-O Cheatsheet

Most Common Questions

• 01. Find 2 Integers in the Array that Multiply to a Given Number *

• 02. Find 3 Integers in the Array that Multiply to a Given Number

• 03. Find the Most Frequent Element in the Array

• 04. Find the Common Elements Between Two Sorted Arrays

• 05. Check if One Array is a Rotation of the Another

• 06. Find the Non-Repeating Char

• 07. Check if a String is One Change Away from Another

• 08. Mine Sweeper Game Part 1

• 09. Mine Sweeper Game Part 2

• 10. Rotate a Matrix 90 Degrees

• 11. Find the nth Element from End in a Linked List

• 12. Find if a Binary Tree is BST

• 13. Find the Lowest Common Ancestor in a Binary Tree

• 14. Find the Maximum Sub Array *

• 15. Find the Longest Consecutive Char

• 16. Reverse Array in-place

• 17. Find Circle in Array

• 18. Universal Value Tree Problem

• 19. Validate Parenthesis in a String

• 20. Fibonacci

• 21. K Most Frequent Elements

• 22. Overlapping Rectangles

• 23. Find All Subsets of a Set

• 24. Palindrome Number

• 25. Remove Duplicates from Sorted Array in-place

• 26. Diameter of Binary Tree

• 27. N Queens

• 28. Non-overlapping Intervals

• 29. Phone Number Mnemonics *

• 30. Count the Number of Ways to Decode a Message

• 31. Recursive Staircase Problem

• 32. LRU Cache *

• 33. Min Stack

• 34. K Smallest Elements in Array * (Pending: Study Selection Rank Algorithm)

• 35. Word Ladder *

• 36. Missing Two *

• 37. Rotting Oranges

• 38. Autocomplete (Pending: Study Tries)

• 39. K-Closest Points to Origin

• 40. Continuous Median *

• 41. Longest Combined Word *

• 42. Count Island Problem

• 43. Living People *

• 44. Serialize and Deserialize Binary Tree

• 45. Best Time to Buy and Sell Stock

• 46. Knapsack Problem

• 47. Merge Two Sorted Linked Lists

• 48. Minimum Depth Binary Tree

• 49. Largest Square of 1's in a Matrix

• 50. Set Matrix Zeros

• 51. Largest Rectangle in a Histogram *

• 52. Product of Array Except Self

• 53. Find the Longest Common Subsequence

• 54. Pacific Atlantic Water Flow

• 55. Integer to English Words *

• 56. Implement a Queue with a Stack

• 57. Median of Two Sorted Arrays

• 58. K Digits

• Tower Hopper Problem

• Find Sets of Numbers that Add Up To X

• Find the Intersection Between Arrays

• Reverse Integer

• Pattern Matching *

• Rotate Array

• Search Suggestions System

• Copy List with Random Pointer

• Critical Routers

• Design Tic-Tac-Toe *

• Reorganize String

• Restore Ip Address

• Course Schedule

• Longest Palindromic Substring

• String to Integer (atoi)

• Valid Sudoku

• Combination Sum

• Minimum Path Sum

• Intersection of Lines *

• Letters and Numbers *

• Count of 2s *

• Baby Names *

• Majority Element *

• Word Distance *

• Re-Space *

• Shortest Supersequence *

• Word Transformer *

• Multi Search *