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## Link of the question
https://leetcode.com/problems/flatten-binary-tree-to-linked-list/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codeforces
- [x] Leetcod…
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## Link of the question
https://practice.geeksforgeeks.org/problems/count-triplets-with-sum-smaller-than-x5549/1
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Co…
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## Link of the question
https://leetcode.com/problems/maximum-length-of-a-concatenated-string-with-unique-characters/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ]…
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## Link of the question
https://leetcode.com/problems/k-diff-pairs-in-an-array/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codeforces
- [x] Leetcode
- [ ] I…
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Please read CONTRIBUTION.md for simple steps to contribute
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[](https://darshankrishna-dk.io)
Hi 👋, I'm Darshan Krishna N
Lazy Developer
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## Link of the question
https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codeforces
- [x] Leetco…
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## Link of the question
https://practice.geeksforgeeks.org/problems/lowest-common-ancestor-in-a-binary-tree/1
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codef…
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## Link of the question
https://www.geeksforgeeks.org/write-a-program-to-reverse-an-array-or-string/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codeforces
- …
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## Link of the question
https://leetcode.com/problems/find-kth-bit-in-nth-binary-string/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codeforces
- [x] Leetcode…