Google Spring' 23 High Frequency

1. Guess the Word (Hard)
2. Reconstruct Itinerary (Hard)
3. Finding the Number of Visible Mountains (Medium)
4. Largest Color Value in a Directed Graph (Hard)
5. Minimum Flips in Binary Tree to Get Result (Hard)
6. Sum of Subarray Ranges (Medium)
7. Closest Node to Path in Tree (Hard)
8. Shortest Unsorted Continuous Subarray (Medium)
9. Design Video Sharing Platform (Hard)
10. Search in Rotated Sorted Array (Medium)
11. Sort Array by Moving Items to Empty Space (Hard)
12. Validate Stack Sequences (Medium)
13. Check if There is a Path With Equal Number of 0's And 1's (Medium)
14. Number of Enclaves (Medium)
15. Number of Closed Islands (Medium)
16. Minimize Maximum Value in a Grid (Hard)
17. Roman to Integer (Easy)
18. Median of Two Sorted Arrays (Hard)
19. Decode String (Medium)
20. Koko Eating Bananas (Medium)
21. Employee Free Time (Hard)
22. Remove K Digits (Medium)
23. Number of Days Between Two Dates (Easy)

Recent 30 Days of Google Interview Questions

Easy

1. Two Sum
2. Create Hello World Function
3. Merge Strings Alternately
4. Recyclable and Low Fat Products
5. Palindrome Number
6. Add Two Integers
7. Move Zeroes
8. Merge Two Sorted Lists
9. Remove Duplicates from Sorted Array
10. Plus One
11. Missing Number
12. Power of Three
13. Valid Palindrome II
14. Article Views I
15. Same Tree
16. Add Digits
17. Count Largest Group
18. Intersection of Two Arrays
19. Power of Four
20. Search Insert Position
21. Logger Rate Limiter
22. Happy Number
23. Middle of the Linked List
24. Find Numbers with Even Number of Digits
25. Length of Last Word
26. Fibonacci Number
27. Build Array from Permutation
28. Linked List Cycle
29. Reverse Linked List
30. Contains Duplicate
31. Roman to Integer
32. Add Binary
33. Binary Search
34. Next Greater Element I
35. Add Strings
36. Nim Game
37. Type of Triangle
38. Range Sum Query - Immutable
39. Diameter of Binary Tree
40. Flood Fill
41. Count Complete Tree Nodes

Medium

1. Longest Substring Without Repeating Characters
2. 3Sum
3. Add Two Numbers
4. Longest Common Prefix
5. Container With Most Water
6. Valid Parentheses
7. Number of Islands
8. Rotate Image
9. Generate Parentheses
10. House Robber
11. LRU Cache
12. Best Time to Buy and Sell Stock
13. Letter Combinations of a Phone Number
14. Move Pieces to Obtain a String
15. Find Peak Element
16. Apply Substitutions
17. Spiral Matrix
18. Separate Squares I
19. Lowest Common Ancestor of a Binary Tree
20. Zigzag Conversion
21. Insert Delete GetRandom O(1)
22. Longest Repeating Character Replacement
23. Interval List Intersections
24. Reverse Integer
25. Find First and Last Position of Element in Sorted Array
26. Fruit Into Baskets
27. 4Sum
28. Maximum Swap
29. Count Complete Subarrays in an Array
30. Sum of Subarray Minimums
31. Reveal Cards In Increasing Order
32. Permutation in String
33. Path Existence Queries in a Graph I
34. Design Hit Counter
35. Count Cells in Overlapping Horizontal and Vertical Substrings
36. Longest Palindromic Substring
37. Count Subarrays Where Max Element Appears at Least K Times
38. Search in Rotated Sorted Array II
39. Longest Increasing Subsequence
40. Koko Eating Bananas
41. Consecutive Numbers
42. Maximal Square
43. Push Dominoes
44. Majority Element II
45. Can Place Flowers
46. Construct Quad Tree
47. Number of Equivalent Domino Pairs
48. Minimum Domino Rotations For Equal Row
49. Rotate Array
50. Combine Two Tables
51. Valid Sudoku
52. Domino and Tromino Tiling
53. Reorganize String
54. Find All Duplicates in an Array
55. Simplify Path
56. Decode String
57. Accounts Merge
58. Valid Word Abbreviation
59. Meeting Rooms II
60. Find Minimum Time to Reach Last Room I
61. The Latest Time to Catch a Bus
62. Detonate the Maximum Bombs
63. Students and Examinations
64. Network Delay Time
65. Single-Threaded CPU
66. Sort Colors
67. Delete Nodes And Return Forest
68. Step-By-Step Directions From a Binary Tree Node to Another
69. Linked List Cycle II
70. Second Highest Salary
71. Minimum Equal Sum of Two Arrays After Replacing Zeros
72. Android Unlock Patterns
73. Three Consecutive Odds
74. Snapshot Array
75. Path With Maximum Minimum Value
76. Search Suggestions System
77. Total Characters in String After Transformations I
78. Product of Array Except Self
79. Maximum Product Subarray
80. Intersection of Two Arrays II
81. Pow(x, n)
82. Course Schedule
83. Edit Distance
84. Subsets
85. Best Time to Buy and Sell Stock II
86. Merge In Between Linked Lists
87. Next Greater Element I
88. Minimum Score of a Path Between Two Cities
89. Boats to Save People
90. Number of Provinces
91. Evaluate Division
92. Subarray Sum Equals K
93. Kth Largest Element in an Array
94. Pacific Atlantic Water Flow
95. First Missing Positive
96. UTF-8 Validation
97. Peak Index in a Mountain Array
98. Reverse Nodes in k-Group
99. Search in Rotated Sorted Array
100. Symmetric Tree
101. Design Circular Queue
102. Can I Win
103. Group Anagrams
104. String Compression
105. Next Permutation
106. Longest Repeating Substring
107. Maximum Frequency After Subarray Operation
108. String to Integer (atoi)
109. Set Matrix Zeroes
110. Excel Sheet Column Title
111. Reorder List

Hard

1. Trapping Rain Water
2. Median of Two Sorted Arrays
3. Largest Color Value in a Directed Graph
4. Minimum Flips in Binary Tree to Get Result
5. Closest Node to Path in Tree
6. Largest Rectangle in Histogram
7. Russian Doll Envelopes
8. Range Module
9. Number of Visible People in a Queue
10. Minimum Weighted Subgraph With the Required Paths
11. Find Median from Data Stream
12. Merge k Sorted Lists
13. Count the Number of Ideal Arrays
14. Find the Count of Monotonic Pairs I
15. Integer to English Words
16. Expression Add Operators
17. Basic Calculator
18. Minimum Number of Refueling Stops
19. Last Day Where You Can Still Cross
20. Minimum Time to Finish the Race
21. N-Queens
22. Time Taken to Cross the Door
23. Longest Duplicate Substring
24. Cheapest Flights Within K Stops
25. Count Number of Balanced Permutations
26. Meeting Rooms III
27. Sliding Window Maximum
28. Total Characters in String After Transformations II
29. Maximal Rectangle
30. Painting a Grid With Three Different Colors
31. Verbal Arithmetic Puzzle
32. Reverse Pairs