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Arena › Browse › DSA
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28 challenges found
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🏆 Top solvers in DSA

🥇 @malathi-shetty 1 solved
🥈 @arun-kumar 1 solved
🥉 @srini-dhoni 1 solved

Quicksort worst case

DSA Hard Free +20 XP
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Amortized

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Balanced tree height

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Trie use

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Union-Find

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Shortest path (weighted)

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Negative weights

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MST algorithm

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DP idea

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Greedy validity

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Backtracking

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Stable sort

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Two sum exists (Py)

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Binary search (Py)

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Anagram check (Py)

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Heapsort time

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Linear-time sort

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Topological sort

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Cycle detection

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String matching

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LCS problem

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Knapsack

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Coin change (min coins)

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XOR property

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Balanced tree types

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LRU cache

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Queue via stacks

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Second largest (Py)

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