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#	Problem	Solution
1	Two Sum	Read solution
2	Insert Interval	—
3	Text Justification	—
4	Minimum Window Substring	—
5	Maximal Rectangle	—
6	The Skyline Problem	—
7	Maximal Square	—
8	Meeting Rooms II	—
9	Find Median from Data Stream	Read solution
10	Bulls and Cows	—
11	Count of Smaller Numbers After Self	—
12	Longest Increasing Path in a Matrix	—
13	Longest Substring with At Most K Distinct Characters	—
14	Moving Average from Data Stream	—
15	Logger Rate Limiter	—
16	Design Hit Counter	—
17	Max Sum of Rectangle No Larger Than K	—
18	Decode String	—
19	Evaluate Division	—
20	Split Array Largest Sum	—
21	Robot Room Cleaner	—
22	Random Pick with Weight	—
23	Subarray Sum Equals K	—
24	Longest Line of Consecutive One in Matrix	—
25	Design Search Autocomplete System	—
26	Split Array into Consecutive Subsequences	—
27	24 Game	—
28	Minimum Window Subsequence	—
29	Network Delay Time	—
30	Open the Lock	—
31	Expressive Words	—
32	Find And Replace in String	—
33	Guess the Word	—
34	Hand of Straights	—
35	Shortest Subarray with Sum at Least K	—
36	X of a Kind in a Deck of Cards	—
37	Minimum Area Rectangle	—
38	Validate Stack Sequences	—
39	Flip Equivalent Binary Trees	—
40	Minimum Domino Rotations For Equal Row	—
41	Longest String Chain	—
42	Shortest Way to Form String	—
43	Confusing Number II	—
44	Delete Nodes And Return Forest	—
45	Snapshot Array	—
46	String Transforms Into Another String	—
47	Divide Chocolate	—
48	Divide Array in Sets of K Consecutive Numbers	—
49	Minimum Distance to Type a Word Using Two Fingers	—
50	Time Needed to Inform All Employees	—