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cpp/neetcode_150
cpp/neetcode_150
 
 
csharp
csharp
 
 
go
go
 
 
java
java
 
 
javascript
javascript
 
 
kotlin
kotlin
 
 
python
python
 
 
ruby
ruby
 
 
rust
rust
 
 
swift
swift
 
 
typescript
typescript
 
 
.gitignore
.gitignore
 
 
1-Two-Sum.py
1-Two-Sum.py
 
 
10-Regular-Expression-Matching.py
10-Regular-Expression-Matching.py
 
 
100-Same-Tree.py
100-Same-Tree.py
 
 
102-Binary-Tree-Level-Order-Traversal.py
102-Binary-Tree-Level-Order-Traversal.py
 
 
104-Maximum-Depth-of-Binary-Tree.py
104-Maximum-Depth-of-Binary-Tree.py
 
 
1046-Last-Stone-Weight.py
1046-Last-Stone-Weight.py
 
 
105-Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.py
105-Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.py
 
 
11-Container-With-Most-Water.py
11-Container-With-Most-Water.py
 
 
110-Balanced-Binary-Tree.py
110-Balanced-Binary-Tree.py
 
 
1143-Longest-Common-Subsequence.py
1143-Longest-Common-Subsequence.py
 
 
115-Distinct-Subsequences.py
115-Distinct-Subsequences.py
 
 
12-Integer-To-Roman.py
12-Integer-To-Roman.py
 
 
121-Best-Time-To-Buy-and-Sell-Stock.py
121-Best-Time-To-Buy-and-Sell-Stock.py
 
 
1239-Maximum-Length-of-a-Concatenated-String-with-Unique-Characters.py
1239-Maximum-Length-of-a-Concatenated-String-with-Unique-Characters.py
 
 
124-Binary-Tree-Maximum-Path-Sum.py
124-Binary-Tree-Maximum-Path-Sum.py
 
 
125-Valid-Palindrome.py
125-Valid-Palindrome.py
 
 
127-Word-Ladder.py
127-Word-Ladder.py
 
 
128-Longest-consecutive-sequence.py
128-Longest-consecutive-sequence.py
 
 
13-Roman-To-Integer.py
13-Roman-To-Integer.py
 
 
130-Surrounded-Regions.py
130-Surrounded-Regions.py
 
 
131-Palindrome-Partitioning.py
131-Palindrome-Partitioning.py
 
 
133-Clone-Graph.py
133-Clone-Graph.py
 
 
134-Gas-Station.py
134-Gas-Station.py
 
 
136-Single-Number.py
136-Single-Number.py
 
 
138-Copy-List-With-Random-Pointer.py
138-Copy-List-With-Random-Pointer.py
 
 
139-Word-Break.py
139-Word-Break.py
 
 
141-Linked-List-Cycle.py
141-Linked-List-Cycle.py
 
 
143-Reorder-List.py
143-Reorder-List.py
 
 
1448-Count-Good-Nodes-in-Binary-Tree.py
1448-Count-Good-Nodes-in-Binary-Tree.py
 
 
146-LRU-Cache.py
146-LRU-Cache.py
 
 
15-3Sum.py
15-3Sum.py
 
 
150-Evaluate-Reverse-Polish-Notation.py
150-Evaluate-Reverse-Polish-Notation.py
 
 
152-Maximum-Product-Subarray.py
152-Maximum-Product-Subarray.py
 
 
153-Find-Minimum-in-Rotated-Sorted-Array.py
153-Find-Minimum-in-Rotated-Sorted-Array.py
 
 
155-Min-Stack.py
155-Min-Stack.py
 
 
1584-Min-Cost-to-Connect-all-Points.py
1584-Min-Cost-to-Connect-all-Points.py
 
 
160-Intersection-of-Two-Linked-Lists.py
160-Intersection-of-Two-Linked-Lists.py
 
 
167-Two-Sum-II.py
167-Two-Sum-II.py
 
 
17-Letter-Combinations-of-a-Phone-Number.py
17-Letter-Combinations-of-a-Phone-Number.py
 
 
1851-Minimum-Interval-to-Include-Each-Query.py
1851-Minimum-Interval-to-Include-Each-Query.py
 
 
1899-Merge-Triplets-to-Form-Target-Triplet.py
1899-Merge-Triplets-to-Form-Target-Triplet.py
 
 
19-Remove-Nth-node-from-end-of-List.py
19-Remove-Nth-node-from-end-of-List.py
 
 
190-Reverse-Bits.py
190-Reverse-Bits.py
 
 
1905-Count-Sub-Islands.py
1905-Count-Sub-Islands.py
 
 
191-Number-of-1-Bits.py
191-Number-of-1-Bits.py
 
 
198-House-Robber.py
198-House-Robber.py
 
 
199-Binary-Tree-Right-Side-View.py
199-Binary-Tree-Right-Side-View.py
 
 
2-Add-Two-Numbers.py
2-Add-Two-Numbers.py
 
 
20-Valid-Parentheses.py
20-Valid-Parentheses.py
 
 
200-Number-of-Islands.py
200-Number-of-Islands.py
 
 
2013-Detect-Squares.py
2013-Detect-Squares.py
 
 
202-Happy-Number.py
202-Happy-Number.py
 
 
206-Reverse-Linked-List.py
206-Reverse-Linked-List.py
 
 
207-Course-Schedule.py
207-Course-Schedule.py
 
 
208-Implement-Trie.py
208-Implement-Trie.py
 
 
21-Merge-Two-Sorted-Lists.py
21-Merge-Two-Sorted-Lists.py
 
 
210-Course-Schedule-II.py
210-Course-Schedule-II.py
 
 
211-Design-Add-and-Search-Words-Data-Structure.py
211-Design-Add-and-Search-Words-Data-Structure.py
 
 
212-Word-Search-II.py
212-Word-Search-II.py
 
 
213-House-Robber-II.py
213-House-Robber-II.py
 
 
215-Kth-Largest-Element-in-an-Array.py
215-Kth-Largest-Element-in-an-Array.py
 
 
217-Contains-Duplicate.py
217-Contains-Duplicate.py
 
 
22-Generate-Parentheses.py
22-Generate-Parentheses.py
 
 
221-Maximal-Square.py
221-Maximal-Square.py
 
 
226-Invert-Binary-Tree.py
226-Invert-Binary-Tree.py
 
 
23-Merge-K-Sorted-Lists.py
23-Merge-K-Sorted-Lists.py
 
 
230-Kth-Smallest-Element-in-a-BST.py
230-Kth-Smallest-Element-in-a-BST.py
 
 
236-Lowest-Common-Ancestor-of-a-Binary-Tree.py
236-Lowest-Common-Ancestor-of-a-Binary-Tree.py
 
 
238-Product-of-array-except-self.py
238-Product-of-array-except-self.py
 
 
239-Sliding-Window-Maximum.py
239-Sliding-Window-Maximum.py
 
 
24-Swap-Nodes-in-Pairs.py
24-Swap-Nodes-in-Pairs.py
 
 
242-Valid-Anagrams.py
242-Valid-Anagrams.py
 
 
25-Reverse-Nodes-in-K-Group.py
25-Reverse-Nodes-in-K-Group.py
 
 
252-Meeting-Rooms.py
252-Meeting-Rooms.py
 
 
253-Meeting-Rooms-ii.py
253-Meeting-Rooms-ii.py
 
 
26-Remove-Duplicates-from-Sorted Array.py
26-Remove-Duplicates-from-Sorted Array.py
 
 
261-Graph-Valid-Tree.py
261-Graph-Valid-Tree.py
 
 
268-Missing-Number.py
268-Missing-Number.py
 
 
27-Remove-Element.py
27-Remove-Element.py
 
 
271-Encode-and-Decode-Strings.py
271-Encode-and-Decode-Strings.py
 
 
28-Implement-strStr.py
28-Implement-strStr.py
 
 
286-Walls-and-Gates.py
286-Walls-and-Gates.py
 
 
287-Find-The-Duplicate-Number.py
287-Find-The-Duplicate-Number.py
 
 
295-Find-Median-from-Data-Stream.py
295-Find-Median-from-Data-Stream.py
 
 
297-Serialize-and-Deserialize-Binary-Tree.py
297-Serialize-and-Deserialize-Binary-Tree.py
 
 
3-Longest-Substring-Without-Repeating-Characters.py
3-Longest-Substring-Without-Repeating-Characters.py
 
 
300-Longest-Increasing-Subsequence.py
300-Longest-Increasing-Subsequence.py
 
 
309-Best-Time-To-Buy-and-Sell-Stock-With-Cooldown.py
309-Best-Time-To-Buy-and-Sell-Stock-With-Cooldown.py
 
 

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Leetcode solutions for NeetCode.io

Updates

I will periodically update the neetcode.io site with new solutions for this repo!

Contributing

Solutions needed:

  • Java
  • Javascript

Complete:

  • Python
  • C++

Please feel free to open a pull request to add solutions in other languages for the Neetcode 150 problem list. If you would like to have collaborator permissions on the repo to merge your own PRs or review others' PRs please let me know.

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  • Python 30.9%
  • C++ 24.6%
  • Java 18.6%
  • JavaScript 15.1%
  • TypeScript 5.4%
  • Ruby 2.3%
  • Other 3.1%