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DSA

Data Structures and Algorithms

76 challenges · Practitioner to Specialty
18 Easy30 Medium28 Hard
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All Data Structures and Algorithms challenges

Big-O of binary search

Easy Free +10 XP
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Hash map lookup

Easy Free +10 XP
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Nested loops

Easy Free +10 XP
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Merge sort time

Medium Free +15 XP
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Quicksort worst case

Hard Free +20 XP
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Space of recursion

Medium Free +15 XP
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Constant time

Easy Free +10 XP
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Amortized

Hard Free +20 XP
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LIFO structure

Easy Free +10 XP
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FIFO structure

Easy Free +10 XP
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Priority retrieval

Medium Free +15 XP
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BST property

Medium Free +15 XP
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Balanced tree height

Hard Free +20 XP
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Hash collision

Medium Free +15 XP
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Linked list insert

Medium Free +15 XP
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Trie use

Hard Free +20 XP
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Union-Find

Hard Free +20 XP
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Stack operations

Easy Free +10 XP
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BFS structure

Medium Free +15 XP
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DFS structure

Medium Free +15 XP
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Shortest path (weighted)

Hard Free +20 XP
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Negative weights

Hard Free +20 XP
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MST algorithm

Hard Free +20 XP
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Divide and conquer

Medium Free +15 XP
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DP idea

Hard Free +20 XP
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Greedy validity

Hard Free +20 XP
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Two pointers

Medium Free +15 XP
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Sliding window

Medium Free +15 XP
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Backtracking

Hard Free +20 XP
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Stable sort

Hard Free +20 XP
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Sum a list (Py)

Easy Free +10 XP
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Reverse a string (Py)

Easy Free +10 XP
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Is palindrome (Py)

Easy Free +10 XP
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Factorial (Py)

Easy Free +10 XP
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Max in list (Py)

Easy Free +10 XP
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Count vowels (Py)

Medium Free +15 XP
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FizzBuzz value (Py)

Medium Free +15 XP
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Is prime (Py)

Medium Free +15 XP
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GCD (Py)

Medium Free +15 XP
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Two sum exists (Py)

Hard Free +20 XP
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Fibonacci (Py)

Medium Free +15 XP
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Binary search (Py)

Hard Free +20 XP
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Count distinct (Py)

Medium Free +15 XP
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Anagram check (Py)

Hard Free +20 XP
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Sum two (JS)

Easy Free +10 XP
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Max of array (JS)

Easy Free +10 XP
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Reverse string (JS)

Easy Free +10 XP
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Count evens (JS)

Medium Free +15 XP
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Factorial (JS)

Medium Free +15 XP
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Palindrome (JS)

Medium Free +15 XP
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Sum array (JS)

Easy Free +10 XP
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Heap insert time

Medium Free +15 XP
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Heapsort time

Hard Free +20 XP
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Linear-time sort

Hard Free +20 XP
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Topological sort

Hard Free +20 XP
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Cycle detection

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Graph representation

Medium Free +15 XP
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String matching

Hard Free +20 XP
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LCS problem

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Knapsack

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🏆 Top solvers in Data Structures and Algorithms

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