Google

2324 problems

Change company

Problem	Difficulty	Frequency	Topics
70. Climbing Stairs	Easy	62.8%	MathDynamic ProgrammingMemoization
21. Merge Two Sorted Lists	Easy	61.6%	Linked ListRecursion
22. Generate Parentheses	Medium	61.5%	StringDynamic ProgrammingBacktrackingBracket Sequences
1929. Concatenation of Array	Easy	61.4%	ArraySimulation
Next Permutation	Medium	60.8%	ArrayTwo Pointers
283. Move Zeroes	Easy	59.7%	ArrayTwo Pointers
206. Reverse Linked List	Easy	59.4%	Linked ListRecursion
54. Spiral Matrix	Medium	59.3%	ArrayMatrixSimulation
875. Koko Eating Bananas	Medium	59.2%	ArrayBinary Search
2235. Add Two Integers	Easy	58.8%	Math
347. Top K Frequent Elements	Medium	58.6%	ArrayHash TableDivide and ConquerSortingHeap (Priority Queue)Bucket SortCountingQuickselect
51. N-Queens	Hard	58.5%	ArrayBacktrackingAlgorithm X
49. Group Anagrams	Medium	58.3%	ArrayHash TableStringSorting
Split Array Largest Sum	Hard	58.2%	ArrayBinary SearchDynamic ProgrammingGreedyPrefix Sum
27. Remove Element	Easy	57.9%	ArrayTwo Pointers
Meeting Rooms II	Medium	57.9%	ArrayTwo PointersGreedySortingHeap (Priority Queue)Prefix Sum
17. Letter Combinations of a Phone Number	Medium	57.8%	Hash TableStringBacktracking
242. Valid Anagram	Easy	57.7%	Hash TableStringSorting
118. Pascal's Triangle	Easy	57.5%	ArrayDynamic Programming
136. Single Number	Easy	57.5%	ArrayBit Manipulation
198. House Robber	Medium	57.4%	ArrayDynamic Programming
Decode String	Medium	57.4%	StringStackRecursion
33. Search in Rotated Sorted Array	Medium	57.3%	ArrayBinary Search
Combine Two Tables	Easy	57.3%	Database
84. Largest Rectangle in Histogram	Hard	56.8%	ArrayStackMonotonic StackRange Minimum/Maximum Query