🚀 Interview Master 100

Welcome, Interview Masters!

Today we have curated a list of the Top 100 LeetCode questions.

These questions will teach you the core concepts and techniques you need to know to crush any technical interview. In other words, this is the 20% that will cover 80% of the strategies you need to solve most coding questions asked in interviews!

We will be covering solutions for each of these questions in the next editions. For problems already solved in previous issues, you will find the reference to the detailed solution below.

Subscribe here to not miss out on the next coding challenges. Happy learning!

THE ULTIMATE INTERVIEWS GUIDE

Interview Master 100

  1. Two Sum [Solution]

  2. Valid Parentheses

  3. Merge Two Sorted Lists [Solution]

  4. Best Time to Buy and Sell Stock [Solution]

  5. Valid Palindrome [Solution]

  6. Invert Binary Tree

  7. Valid Anagram

  8. Binary Search

  9. Linked List Cycle

  10. Maximum Depth of Binary Tree

  11. Single Number

  12. Reverse Linked List

  13. Majority Element

  14. Missing Number

  15. Reverse String

  16. Diameter of Binary Tree

  17. Middle of the Linked List

  18. Convert Sorted Array to Binary Search Tree

  19. Maximum Subarray [Solution]

  20. Climbing Stairs [Solution]

  21. Symmetric Tree

  22. Binary Tree Level Order Traversal

  23. Best Time to Buy and Sell Stock II

  24. House Robber [Solution]

  25. Number of 1 Bits

  26. Validate Binary Search Tree

  27. Min Stack [Solution]

  28. Contains Duplicate [Solution]

  29. Kth Smallest Element in a BST

  30. Merge Intervals [Solution]

  31. Set Matrix Zeroes [Solution]

  32. Spiral Matrix [Solution]

  33. 3Sum [Solution]

  34. Binary Tree Zigzag Level Order Traversal

  35. Construct Binary Tree from Preorder and Inorder Traversal

  36. Container With Most Water [Solution]

  37. Flatten Binary Tree to Linked List

  38. Group Anagrams

  39. Implement Trie (Prefix Tree)

  40. Kth Largest Element in an Array

  41. Longest Palindromic Substring

  42. Longest Substring Without Repeating Characters

  43. Maximal Square

  44. Maximum Product Subarray

  45. Minimum Window Substring

  46. Number of Islands [Solution]

  47. Permutations

  48. Remove Nth Node From End of List

  49. Rotate Image [Solution]

  50. Search a 2D Matrix

  51. Search in Rotated Sorted Array

  52. Subsets

  53. Top K Frequent Elements

  54. Trapping Rain Water

  55. Two Sum II - Input Array Is Sorted

  56. Unique Paths

  57. Valid Sudoku

  58. Word Break

  59. Word Search

  60. Add Two Numbers [Solution]

  61. Basic Calculator

  62. Coin Change

  63. Combination Sum

  64. Copy List with Random Pointer

  65. Course Schedule

  66. Design Add and Search Words Data Structure

  67. Merge Sorted Array

  68. Find Median from Data Stream

  69. Game of Life

  70. Jump Game

  71. Letter Combinations of a Phone Number

  72. Longest Consecutive Sequence [Solution]

  73. Longest Increasing Subsequence

  74. Median of Two Sorted Arrays

  75. Merge k Sorted Lists [Solution]

  76. Minimum Path Sum

  77. Word Search II

  78. Reverse Nodes in k-Group

  79. Course Schedule II

  80. Remove Element

  81. Rotate Array

  82. Bitwise AND of Numbers Range

  83. Palindrome Number

  84. Plus One

  85. Sqrt(x)

  86. Pow(x n) [Solution]

  87. Construct Binary Tree from Inorder and Postorder Traversal

  88. Path Sum

  89. Binary Tree Right Side View

  90. Binary Tree Level Order Traversal

  91. Minimum Absolute Difference in BST

  92. Surrounded Regions

  93. Clone Graph

  94. Evaluate Division

  95. Generate Parentheses [Solution]

  96. Sort List

  97. Maximum Sum Circular Subarray

  98. Find Peak Element

  99. Find Minimum in Rotated Sorted Array [Solution]

  100. Remove Duplicates from Sorted Array

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