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

LeetCode Topics

Math

0002-add-two-numbers
0326-power-of-three
0342-power-of-four
0830-largest-triangle-area
1018-largest-perimeter-triangle
1426-find-n-unique-integers-sum-up-to-zero
1440-convert-integer-to-the-sum-of-two-no-zero-integers
1448-maximum-69-number
1642-water-bottles
1817-calculate-money-in-leetcode-bank
2174-next-greater-numerically-balanced-number
2244-number-of-laser-beams-in-a-bank
2307-replace-non-coprime-numbers-in-array
2324-find-triangular-sum-of-an-array
2432-number-of-zero-filled-subarrays
3336-water-bottles-ii
3462-vowels-game-in-a-string
3676-smallest-number-with-all-set-bits
3768-check-if-digits-are-equal-in-string-after-operations-i
3830-find-closest-person

Recursion

0002-add-two-numbers
0326-power-of-three
0342-power-of-four

String

0003-longest-substring-without-repeating-characters
0006-zigzag-conversion
0022-generate-parentheses
0165-compare-version-numbers
1264-maximum-number-of-words-you-can-type
1353-find-resultant-array-after-removing-anagrams
2137-final-value-of-variable-after-performing-operations
2244-number-of-laser-beams-in-a-bank
2346-largest-3-same-digit-number-in-string
2487-optimal-partition-of-string
2887-sort-vowels-in-a-string
3462-vowels-game-in-a-string
3768-check-if-digits-are-equal-in-string-after-operations-i
3872-find-most-frequent-vowel-and-consonant

Bit Manipulation

0190-reverse-bits
0342-power-of-four
3676-smallest-number-with-all-set-bits

Greedy

0011-container-with-most-water
0646-maximum-length-of-pair-chain
1018-largest-perimeter-triangle
1448-maximum-69-number
1917-maximum-average-pass-ratio
2117-find-original-array-from-doubled-array
2487-optimal-partition-of-string

Linked List

0002-add-two-numbers

Array

0004-median-of-two-sorted-arrays
0011-container-with-most-water
0018-4sum
0053-maximum-subarray
0120-triangle
0198-house-robber
0373-find-k-pairs-with-smallest-sums
0498-diagonal-traverse
0646-maximum-length-of-pair-chain
0830-largest-triangle-area
0907-koko-eating-bananas
0954-maximum-sum-circular-subarray
1018-largest-perimeter-triangle
1353-find-resultant-array-after-removing-anagrams
1426-find-n-unique-integers-sum-up-to-zero
1586-longest-subarray-of-1s-after-deleting-one-element
1917-maximum-average-pass-ratio
2117-find-original-array-from-doubled-array
2137-final-value-of-variable-after-performing-operations
2169-simple-bank-system
2244-number-of-laser-beams-in-a-bank
2307-replace-non-coprime-numbers-in-array
2324-find-triangular-sum-of-an-array
2392-successful-pairs-of-spells-and-potions
2432-number-of-zero-filled-subarrays
3242-count-elements-with-maximum-frequency
3251-maximum-area-of-longest-diagonal-rectangle
3383-taking-maximum-energy-from-the-mystic-dungeon
3461-find-the-minimum-area-to-cover-all-ones-i
3612-adjacent-increasing-subarrays-detection-i
3616-make-array-elements-equal-to-zero
3748-sort-matrix-by-diagonals

Hash Table

0003-longest-substring-without-repeating-characters
1264-maximum-number-of-words-you-can-type
1353-find-resultant-array-after-removing-anagrams
2117-find-original-array-from-doubled-array
2169-simple-bank-system
2174-next-greater-numerically-balanced-number
2487-optimal-partition-of-string
3242-count-elements-with-maximum-frequency
3872-find-most-frequent-vowel-and-consonant

Sliding Window

0003-longest-substring-without-repeating-characters
1586-longest-subarray-of-1s-after-deleting-one-element

Binary Search

0004-median-of-two-sorted-arrays
0907-koko-eating-bananas
2392-successful-pairs-of-spells-and-potions

Divide and Conquer

0004-median-of-two-sorted-arrays
0053-maximum-subarray
0190-reverse-bits
0954-maximum-sum-circular-subarray

Matrix

0498-diagonal-traverse
2244-number-of-laser-beams-in-a-bank
3461-find-the-minimum-area-to-cover-all-ones-i
3748-sort-matrix-by-diagonals

Dynamic Programming

0022-generate-parentheses
0053-maximum-subarray
0120-triangle
0198-house-robber
0646-maximum-length-of-pair-chain
0954-maximum-sum-circular-subarray
1586-longest-subarray-of-1s-after-deleting-one-element

Simulation

0498-diagonal-traverse
1642-water-bottles
2137-final-value-of-variable-after-performing-operations
2169-simple-bank-system
2324-find-triangular-sum-of-an-array
3336-water-bottles-ii
3616-make-array-elements-equal-to-zero
3768-check-if-digits-are-equal-in-string-after-operations-i

Sorting

0018-4sum
0646-maximum-length-of-pair-chain
1018-largest-perimeter-triangle
1353-find-resultant-array-after-removing-anagrams
2117-find-original-array-from-doubled-array
2392-successful-pairs-of-spells-and-potions
2887-sort-vowels-in-a-string
3748-sort-matrix-by-diagonals

Depth-First Search

0871-keys-and-rooms

Breadth-First Search

0871-keys-and-rooms

Graph

0871-keys-and-rooms

Heap (Priority Queue)

0373-find-k-pairs-with-smallest-sums
1917-maximum-average-pass-ratio

Two Pointers

0011-container-with-most-water
0018-4sum
0165-compare-version-numbers
2392-successful-pairs-of-spells-and-potions

Brainteaser

3462-vowels-game-in-a-string

Game Theory

3462-vowels-game-in-a-string

Counting

2174-next-greater-numerically-balanced-number
3242-count-elements-with-maximum-frequency
3872-find-most-frequent-vowel-and-consonant

Stack

2307-replace-non-coprime-numbers-in-array

Number Theory

2307-replace-non-coprime-numbers-in-array
3768-check-if-digits-are-equal-in-string-after-operations-i

Geometry

0830-largest-triangle-area

Combinatorics

2324-find-triangular-sum-of-an-array
3768-check-if-digits-are-equal-in-string-after-operations-i

Backtracking

0022-generate-parentheses
2174-next-greater-numerically-balanced-number

Prefix Sum

3383-taking-maximum-energy-from-the-mystic-dungeon
3616-make-array-elements-equal-to-zero

Queue

0954-maximum-sum-circular-subarray

Monotonic Queue

0954-maximum-sum-circular-subarray

Enumeration

2174-next-greater-numerically-balanced-number

Design

2169-simple-bank-system

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