├── challenges
    └── firstUniqueChar.js
├── data_structures
    └── LinkedList.py
└── README.md


/challenges/firstUniqueChar.js:
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 1 | /** Find the first unique character in a string. Return `null` if no unique character is found. 
 2 | 
 3 | Test cases: 
 4 |   - input: "aabcdcd" , output: "b"
 5 |   - input: "bb", output: null
 6 |   - input: "ababccd", output: "d" 
 7 |   - input: "abcdea", output: "b"
 8 |   
 9 |   Time complexity: 
10 |   Space complexity:
11 | **/
12 | 


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/data_structures/LinkedList.py:
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 1 | # comment ou
 2 | class ListNode:
 3 |     def __init__(self, val=None):
 4 |         self.data = val
 5 |         self.next = None
 6 | class LinkedList:
 7 | 	def __init__(self):
 8 | 		self.head = None
 9 | 	
10 | 	def setHead(self, head):
11 | 		self.head = head
12 | 
13 | my_list = LinkedList()
14 | node = ListNode(10)
15 | my_list.setHead(node)
16 | 


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/README.md:
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 1 | # algorithms-group
 2 | Resources and notes for the algorithms study group with Learn Teach Code (Created by @ThuyNT13, @mtroiani, @LearningNerd, @loorin, and @nurarenke)
 3 | 
 4 | ![Our first downtown LA algorithms meetup](https://secure.meetupstatic.com/photos/event/2/8/1/8/highres_467050264.jpeg)
 5 | 
 6 | ## Next ideas
 7 | 
 8 |   - Include resources in this repo like primers on algorithm topics, and maybe lists of suggested links and other stuff? See below.
 9 |   
10 |   - Maybe try publishing meeting notes to keep an archive of what happens at each meetup, similar to https://github.com/fullstackla/pairing-meetup/issues/159
11 |   
12 |   - collect challenges that are good practice materials for meetups
13 | 
14 | 
15 | ## Being developed
16 | 
17 |    - Creating a wiki of resources: https://github.com/LearnTeachCode/algorithms-group/wiki
18 |    - **Gist Study Guides** shared at presentations/workshops given at meetups, and that people can download
19 |      - [Big O Notation](https://gist.github.com/ThuyNT13/16bc1cf4242e5e2ba84d20c47be793b0)
20 |      - [LinkedList](https://gist.github.com/ThuyNT13/85815881d64061ef3e21671a233f8e43)
21 |      - [HashMaps](https://gist.github.com/mtroiani/e03e48aa23b7e46b151d52ac042a8fa3)
22 |      - [Recursion and DP](https://gist.github.com/mtroiani/b30108f4cae4ccd1d511ee6dd53f2949)
23 |      - [Arrays](https://gist.github.com/mtroiani/899541a99c9e900dd017b0f1b48c7314)
24 |      - [Trees](https://gist.github.com/mtroiani/b5d24d89dbbf1cf5cd922693c3c4a1cf)
25 |      
26 | ---    
27 | 
28 | ## Join Us!
29 | 
30 | For the latest news, join our **#algorithms** and **#mock-interviews** channel on Slack. We are currently exploring weekly virtual/remote Meetups. This will allow for more consistent, regular practice. 
31 | 
32 | **http://learnteachcode.herokuapp.com**
33 | 
34 | ## Support
35 | 
36 | Please open or respond to [an issue](https://github.com/LearnTeachCode/algorithms-group/issues) for support.
37 | 
38 | ## Contributing
39 | 
40 | Please contribute using [Github Flow](https://guides.github.com/introduction/flow/). Create a branch, add commits, and open a [pull request](https://github.com/LearnTeachCode/algorithms-group/pulls). Please don't push to master.
41 | 


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