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Commits

Commits on Apr 29, 2020

optimized again to using only one array instead of two hashsets, simplified logic and reduced run time by over 4000% to 12ms
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926c206
working version that passes test cases
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ec66f77
disjointed nodes problem, need to learn union find after
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9ec81bd

Commits on Apr 22, 2020

map+stack optimal solution
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8f93b36

Commits on Apr 21, 2020

optimized using array instead of hashmap, however, still O(n^2)
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c74cdcb
google prep as well as brute force solution to increasing sequence
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4df3c54

Commits on Sep 22, 2019

working iterative solution
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bf370ab
working recursive solution
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c0b0c3e

Commits on Sep 21, 2019

almost working solution for symmetric Tree
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96a0092
solved the max depth question using two different recursion approaches
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847bc06

Commits on Sep 20, 2019

solved the question from pure storage oa
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677c8f7
solved candy crush one d usingg the stack based approach
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a99f2cd
solved climbing stairs first as recursion, then as memoization, need to keep improving all these solution to reach the dp solution
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ac9447a
fibonacci solved using dynamic programming
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e11a2d8

Commits on Sep 19, 2019

exploring the all path from source to target using dfs
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67b9fa7

Commits on Sep 17, 2019

solved easy dp question which is similar to trapped rainwater
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96eab90
completed bloomberg interview
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a52c376
mocked with Mr.Belu and working on k smallest number
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87f91ab
solved the palindrome question from Bloomberg collections
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ca0caf1

Commits on Sep 16, 2019

solved find min triple sum problem
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09aa132

Commits on Sep 15, 2019

added greedy solution to the two city scheduling problem as well as some review notes pointers
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5a4fcea

Commits on Sep 13, 2019

tidied up the code and came up with the working solution without additional arrayList
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623d17e
a variation of the knapsack problem disguised with events
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1d05f64

Commits on Sep 12, 2019

a variation of the meeting room 2 problem, solved in nlogn time by using greedy algorithm
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eaa8435
solved the weird examination problem from Twitter OA using principle derived from the maximum slice problem from Goldman
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1a87178
solved the expiratin token problem from Twitter OA using hashmap
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43ce62d
worked on two questions during mock with David
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e7ed571

Commits on Sep 11, 2019

completed bloomberg mock phone screen
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8fdcd64
started the binary tree folder by solved insertion and search, need to do deletion
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f1a8325

Commits on Sep 10, 2019

solved friend circles using bfs
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solved search insert position, need to touch up on binary search
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01a9de5
solved more in order traversal problems
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f343ec4
solved in order successor using the same template
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c7b218a

Commits on Sep 8, 2019

solved k smallest element in BST problem
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da53aed

Commits on Sep 7, 2019

solved post order recursively and practiced bfs
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88871ba