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49 problems total

Array (1906)Sorting (442)Depth First Search (316)Database (301)Breadth First Search (241)Tree (241)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)

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Title	Difficulty	Videos	Companies
Find Coin Denominations from Change Count	medium	-	snapchat
Longest Substring Without Repeating Characters	medium		adobe alation alibaba
3Sum0 - Find three elements in an array that sum to a zero	medium		adobe akuna-capital alibaba
Generate Parentheses	medium	-	adobe alibaba amazon
Search in Rotated Sorted Array	medium		adobe alibaba amazon
Valid Sudoku	medium		adobe amazon apple
Combination Sum 1	medium		airbnb akuna-capital amazon
Combination Sum 2 - Cant Reuse same element	medium	-	adobe amazon apple
Group Anagrams	medium		adobe affirm amazon
Spiral Matrix 1 - Return	medium		adobe amazon apple
Merge Overlapping Intervals	medium		adobe alibaba amazon
Unique Paths in Grid 1 - Count all paths moving right or down	medium		adobe alibaba amazon
Unique Paths in Grid 2 - Count all paths moving right or down with obstacles	medium	-	amazon apple bloomberg
Word Search 1 - Find if word exists	medium		adobe amazon apple
Decode Ways	medium		adobe amazon apple
Restore IP Addresses	medium	-	adobe amazon apple
Unique BSTs 1 - Count	medium	-	adobe amazon apple
Copy List with Random Pointer	medium	-	adobe amazon apple
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Design LRU Cache	medium	-	adobe alibaba amazon
Reverse Words in a String	medium	-	amazon apple bloomberg
Min Stack	medium	-	adobe amazon apple
Friend Words - One Edit Distance	medium	-	amazon facebook google
Rotate an Array to Right	medium	-	amazon bloomberg cisco
Number of Islands	medium		adobe affirm alibaba
Course Schedule 2 - Get Ordered Courses	medium	-	airbnb amazon apple
Kth Largest Element in an Array	medium	-	adobe airbnb alibaba
Basic Calculator 2 Problem	medium	-	airbnb amazon apple
Product of Array Except Self	medium		adobe amazon apple
Maximum Intervals Overlap Count	medium		amazon apple atlassian
Game of Life	medium	-	amazon bloomberg dropbox
Minimum Height Trees	medium	-	amazon apple bloomberg
Sparse Matrix Multiplication	medium	-	amazon apple bloomberg
Binary Tree Traversal - Vertical Order Traversal	medium	-	adobe amazon bloomberg
Longest Substring with At Most K Distinct Characters	medium	-	amazon appdynamics bloomberg
Flatten Nested List Iterator	medium	-	airbnb amazon apple
Top K Frequent Elements	medium		amazon apple bloomberg
Design Hit Counter	medium	-	affirm amazon apple
Combination Sum 4 - All permutations	medium	-	amazon facebook google
Decode String	medium	-	alibaba amazon appdynamics
Remove K Digits	medium	-	adobe amazon bloomberg
Ternary Expression Parser	medium	-	snapchat
String Compression	medium	-	akuna-capital amazon apple
Subarray Sum Equals K	medium	-	adobe amazon apple
Design Log Storage System	medium	-	amazon google snapchat
Find K Closest Elements	medium	-	amazon apple bloomberg
Interval List Intersections	medium	-	amazon apple bloomberg
Maximum Sum of Two Non-Overlapping Subarrays	medium	-	amazon facebook google
Snapshot Array	medium	-	amazon apple ebay

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