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A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Array

0063-unique-paths-ii
0064-minimum-path-sum
0130-surrounded-regions
0174-dungeon-game
0200-number-of-islands
0204-count-primes
0300-longest-increasing-subsequence
0309-best-time-to-buy-and-sell-stock-with-cooldown
0322-coin-change
0494-target-sum
0518-coin-change-ii
0714-best-time-to-buy-and-sell-stock-with-transaction-fee
0720-longest-word-in-dictionary
0869-similar-string-groups
0967-minimum-falling-path-sum
1620-check-if-array-pairs-are-divisible-by-k
2106-find-greatest-common-divisor-of-array
2262-solving-questions-with-brainpower
2546-number-of-subarrays-with-gcd-equal-to-k
2621-find-xor-beauty-of-array
2665-minimum-time-to-repair-cars

Dynamic Programming

0022-generate-parentheses
0062-unique-paths
0063-unique-paths-ii
0064-minimum-path-sum
0115-distinct-subsequences
0174-dungeon-game
0264-ugly-number-ii
0300-longest-increasing-subsequence
0309-best-time-to-buy-and-sell-stock-with-cooldown
0322-coin-change
0337-house-robber-iii
0392-is-subsequence
0494-target-sum
0518-coin-change-ii
0714-best-time-to-buy-and-sell-stock-with-transaction-fee
0967-minimum-falling-path-sum
2262-solving-questions-with-brainpower

Breadth-First Search

0130-surrounded-regions
0200-number-of-islands
0207-course-schedule
0322-coin-change
0547-number-of-provinces
0869-similar-string-groups

Backtracking

0022-generate-parentheses
0494-target-sum

Math

0062-unique-paths
0204-count-primes
0263-ugly-number
0264-ugly-number-ii
1307-ugly-number-iii
2106-find-greatest-common-divisor-of-array
2546-number-of-subarrays-with-gcd-equal-to-k
2621-find-xor-beauty-of-array
3600-find-the-k-th-character-in-string-game-i
3601-find-the-k-th-character-in-string-game-ii

Combinatorics

0062-unique-paths
1307-ugly-number-iii

Matrix

0063-unique-paths-ii
0064-minimum-path-sum
0130-surrounded-regions
0174-dungeon-game
0200-number-of-islands
0967-minimum-falling-path-sum

Greedy

0714-best-time-to-buy-and-sell-stock-with-transaction-fee

Tree

0337-house-robber-iii

Depth-First Search

0130-surrounded-regions
0200-number-of-islands
0207-course-schedule
0337-house-robber-iii
0547-number-of-provinces
0869-similar-string-groups

Binary Tree

0337-house-robber-iii

Binary Search

0300-longest-increasing-subsequence
1307-ugly-number-iii
2665-minimum-time-to-repair-cars

Two Pointers

0086-partition-list
0392-is-subsequence

String

0022-generate-parentheses
0115-distinct-subsequences
0208-implement-trie-prefix-tree
0392-is-subsequence
0677-map-sum-pairs
0720-longest-word-in-dictionary
0869-similar-string-groups

Hash Table

0146-lru-cache
0208-implement-trie-prefix-tree
0264-ugly-number-ii
0677-map-sum-pairs
0720-longest-word-in-dictionary
0869-similar-string-groups
1620-check-if-array-pairs-are-divisible-by-k

Counting

1620-check-if-array-pairs-are-divisible-by-k

Enumeration

0204-count-primes

Number Theory

0204-count-primes
1307-ugly-number-iii
2106-find-greatest-common-divisor-of-array
2546-number-of-subarrays-with-gcd-equal-to-k

Heap (Priority Queue)

0264-ugly-number-ii

Union Find

0130-surrounded-regions
0200-number-of-islands
0547-number-of-provinces
0869-similar-string-groups

Graph

0207-course-schedule
0547-number-of-provinces

Linked List

0086-partition-list
0146-lru-cache
0328-odd-even-linked-list

Design

0146-lru-cache
0208-implement-trie-prefix-tree
0677-map-sum-pairs

Doubly-Linked List

0146-lru-cache

Topological Sort

0207-course-schedule

Bit Manipulation

0201-bitwise-and-of-numbers-range
2621-find-xor-beauty-of-array
3600-find-the-k-th-character-in-string-game-i
3601-find-the-k-th-character-in-string-game-ii

Recursion

3600-find-the-k-th-character-in-string-game-i
3601-find-the-k-th-character-in-string-game-ii

Simulation

3600-find-the-k-th-character-in-string-game-i

Trie

0208-implement-trie-prefix-tree
0677-map-sum-pairs
0720-longest-word-in-dictionary

Sorting

0720-longest-word-in-dictionary

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