Google 30 Day Frequent Problems

Two Sum
Merge Strings Alternately
Palindrome Number
Trapping Rain Water
Median of Two Sorted Arrays
Longest Substring Without Repeating Characters
3Sum
Merge Sorted Array
Add Two Numbers
Longest Common Prefix
Container With Most Water
Valid Parentheses
Merge Two Sorted Lists
Remove Duplicates from Sorted Array
Best Time to Buy and Sell Stock
Reverse Integer
Search Insert Position
Longest Palindromic Substring
Happy Number
Rotate Array
Sort Colors
Subarray Sum Equals K
Next Permutation
Longest Consecutive Sequence
Top K Frequent Elements
Find the Index of the First Occurrence in a String
Regular Expression Matching
Generate Parentheses
Add Binary
Power of Two
Maximum Subarray
Majority Element
Group Anagrams
Intersection of Two Arrays
House Robber
Sliding Window Maximum
3Sum Closest
Create Hello World Function
Sqrt(x)
Add Two Integers
Wildcard Matching
Search in Rotated Sorted Array
Koko Eating Bananas
Count Primes
Recyclable and Low Fat Products
Search a 2D Matrix II
Reverse String
Kth Smallest Element in a BST
Employee Bonus
Find N Unique Integers Sum up to Zero
Check if Array Is Sorted and Rotated
Convert Integer to the Sum of Two No-Zero Integers
Counting Bits
Number of People Aware of a Secret
Find the Highest Altitude
Same Tree
Climbing Stairs
Roman to Integer
Perfect Squares
First Missing Positive
Number of Islands
Binary Search
Reverse Vowels of a String
Best Time to Buy and Sell Stock II
Min Stack
Design Circular Queue
Word Ladder
Vowel Spellchecker
Integer to English Words
Maximum Number of Words You Can Type
Replace Non-Coprime Numbers in Array
Apply Substitutions
Largest Rectangle in Histogram
Squares of a Sorted Array
Daily Temperatures
Find Pivot Index
Design a Food Rating System
Longest Increasing Subsequence
Percentage of Users Attended a Contest
Design Task Manager
Palindrome Linked List
Peak Index in a Mountain Array
Design Spreadsheet
Single Number
Implement Stack Using Queues
Binary Tree Zigzag Level Order Traversal
Target Sum
Compare Version Numbers
Middle of the Linked List
Linked List Cycle II
Range Sum Query 2D – Immutable
Max Points on a Line
Fraction to Recurring Decimal
Continuous Subarray Sum
Random Pick with Weight
Move Zeroes
Snapshot Array
Subsequence Sum After Capping Elements
Reverse Prefix of Word
Triangle
Asteroid Collision
Logger Rate Limiter
Employees Earning More Than Their Managers
Largest Triangle Area
Design Search Autocomplete System
Russian Doll Envelopes
Candy
Letter Combinations of a Phone Number
Valid Anagram
Largest Perimeter Triangle
Rising Temperature
Copy List with Random Pointer
Multiply Strings
Range Module
Subsets
Best Time to Buy and Sell Stock with Cooldown
Pascal’s Triangle
Meeting Rooms II
Rearrange Array Elements by Sign
Rotate Image
Maximum Score of a Node Sequence
Merge Intervals
Insert Delete GetRandom O(1)
Minimum Operations to Make Array Elements Zero
XOR Operation in an Array
Water Bottles
Average Selling Price
Ransom Note
Find First and Last Position of Element in Sorted Array
Remove Boxes
Coin Change II
String to Integer (atoi)
Edit Distance
Convert Sorted Array to Binary Search Tree
Sort List
Valid Palindrome
Inverse Coin Change
Car Pooling
132 Pattern
Set Matrix Zeroes
Decode String
Trapping Rain Water II
Insert Interval
Longest Common Subsequence
Split Array Largest Sum
Remove K Digits
Number of Provinces
Remove Linked List Elements
Find Beautiful Indices in the Given Array I
Jewels and Stones
Pow(x, n)
Shortest Palindrome
Kth Largest Element in an Array