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

LeetCode Topics

Database

0181-employees-earning-more-than-their-managers

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0014-longest-common-prefix
0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0036-valid-sudoku
0037-sudoku-solver
0046-permutations
0048-rotate-image
0051-n-queens
0075-sort-colors
0121-best-time-to-buy-and-sell-stock
0136-single-number
0167-two-sum-ii-input-array-is-sorted
0200-number-of-islands
0229-majority-element-ii
0283-move-zeroes
0611-valid-triangle-number
0733-flood-fill
0966-binary-subarrays-with-sum
1034-subarrays-with-k-different-integers
1046-max-consecutive-ones-iii
1106-escape-a-large-maze
1319-unique-number-of-occurrences
1925-count-nice-pairs-in-an-array
2215-finding-3-digit-even-numbers
2324-find-triangular-sum-of-an-array
2392-successful-pairs-of-spells-and-potions
2525-count-number-of-distinct-integers-after-reverse-operations
2847-find-maximum-number-of-string-pairs
3383-taking-maximum-energy-from-the-mystic-dungeon

Depth-First Search

0200-number-of-islands
0733-flood-fill
1106-escape-a-large-maze

Breadth-First Search

0200-number-of-islands
0733-flood-fill
1106-escape-a-large-maze

Union Find

0200-number-of-islands

Matrix

0036-valid-sudoku
0037-sudoku-solver
0048-rotate-image
0200-number-of-islands
0733-flood-fill

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0036-valid-sudoku
0037-sudoku-solver
0229-majority-element-ii
0242-valid-anagram
0424-longest-repeating-character-replacement
0966-binary-subarrays-with-sum
1034-subarrays-with-k-different-integers
1106-escape-a-large-maze
1319-unique-number-of-occurrences
1925-count-nice-pairs-in-an-array
2215-finding-3-digit-even-numbers
2525-count-number-of-distinct-integers-after-reverse-operations
2847-find-maximum-number-of-string-pairs

Backtracking

0037-sudoku-solver
0046-permutations
0051-n-queens

Sorting

0015-3sum
0018-4sum
0075-sort-colors
0229-majority-element-ii
0242-valid-anagram
0611-valid-triangle-number
2215-finding-3-digit-even-numbers
2392-successful-pairs-of-spells-and-potions

Counting

0229-majority-element-ii
1034-subarrays-with-k-different-integers
1925-count-nice-pairs-in-an-array
2525-count-number-of-distinct-integers-after-reverse-operations

Math

0002-add-two-numbers
0007-reverse-integer
0048-rotate-image
0050-powx-n
1925-count-nice-pairs-in-an-array
2050-count-good-numbers
2324-find-triangular-sum-of-an-array
2525-count-number-of-distinct-integers-after-reverse-operations
3336-water-bottles-ii

Enumeration

2215-finding-3-digit-even-numbers

String

0003-longest-substring-without-repeating-characters
0008-string-to-integer-atoi
0014-longest-common-prefix
0020-valid-parentheses
0058-length-of-last-word
0065-valid-number
0242-valid-anagram
0424-longest-repeating-character-replacement
2847-find-maximum-number-of-string-pairs

Simulation

2324-find-triangular-sum-of-an-array
2847-find-maximum-number-of-string-pairs
3336-water-bottles-ii

Dynamic Programming

0121-best-time-to-buy-and-sell-stock

Linked List

0002-add-two-numbers
0021-merge-two-sorted-lists

Recursion

0002-add-two-numbers
0021-merge-two-sorted-lists
0050-powx-n
2050-count-good-numbers

Stack

0020-valid-parentheses

Sliding Window

0003-longest-substring-without-repeating-characters
0424-longest-repeating-character-replacement
0966-binary-subarrays-with-sum
1034-subarrays-with-k-different-integers
1046-max-consecutive-ones-iii

Binary Search

0004-median-of-two-sorted-arrays
0167-two-sum-ii-input-array-is-sorted
0611-valid-triangle-number
1046-max-consecutive-ones-iii
2392-successful-pairs-of-spells-and-potions

Divide and Conquer

0004-median-of-two-sorted-arrays
0191-number-of-1-bits

Two Pointers

0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0075-sort-colors
0167-two-sum-ii-input-array-is-sorted
0283-move-zeroes
0611-valid-triangle-number
2392-successful-pairs-of-spells-and-potions

Combinatorics

2324-find-triangular-sum-of-an-array

Greedy

0611-valid-triangle-number

Prefix Sum

0966-binary-subarrays-with-sum
1046-max-consecutive-ones-iii
3383-taking-maximum-energy-from-the-mystic-dungeon

Trie

0014-longest-common-prefix

Bit Manipulation

0136-single-number
0191-number-of-1-bits

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