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LeetCode

A collection of LeetCode problems and my solutions.

LeetCode Topics

Array

0001-two-sum
0046-permutations
0054-spiral-matrix
0066-plus-one
0209-minimum-size-subarray-sum
0217-contains-duplicate
0229-majority-element-ii
0485-max-consecutive-ones
0745-find-smallest-letter-greater-than-target
0898-transpose-matrix
0978-valid-mountain-array
1018-largest-perimeter-triangle
1510-find-lucky-integer-in-an-array
2267-minimum-difference-in-sums-after-removal-of-elements
2479-meeting-rooms-iii
2497-maximum-matching-of-players-with-trainers
3490-find-the-maximum-length-of-valid-subsequence-i
3491-find-the-maximum-length-of-valid-subsequence-ii

Hash Table

0001-two-sum
0141-linked-list-cycle
0217-contains-duplicate
0229-majority-element-ii
1510-find-lucky-integer-in-an-array
2479-meeting-rooms-iii

Sorting

0217-contains-duplicate
0229-majority-element-ii
1018-largest-perimeter-triangle
2479-meeting-rooms-iii
2497-maximum-matching-of-players-with-trainers

Math

0002-add-two-numbers
0066-plus-one
0070-climbing-stairs
1013-fibonacci-number
1018-largest-perimeter-triangle
1411-convert-binary-number-in-a-linked-list-to-integer
3600-find-the-k-th-character-in-string-game-i

Dynamic Programming

0022-generate-parentheses
0070-climbing-stairs
1013-fibonacci-number
2028-the-earliest-and-latest-rounds-where-players-compete
2267-minimum-difference-in-sums-after-removal-of-elements
3490-find-the-maximum-length-of-valid-subsequence-i
3491-find-the-maximum-length-of-valid-subsequence-ii

Recursion

0002-add-two-numbers
0234-palindrome-linked-list
1013-fibonacci-number
3600-find-the-k-th-character-in-string-game-i

Memoization

0070-climbing-stairs
1013-fibonacci-number
2028-the-earliest-and-latest-rounds-where-players-compete

Backtracking

0022-generate-parentheses
0046-permutations

Linked List

0002-add-two-numbers
0141-linked-list-cycle
0234-palindrome-linked-list
1411-convert-binary-number-in-a-linked-list-to-integer

Two Pointers

0141-linked-list-cycle
0234-palindrome-linked-list
2497-maximum-matching-of-players-with-trainers

Stack

0234-palindrome-linked-list

Database

0584-find-customer-referee
0595-big-countries
1908-recyclable-and-low-fat-products

String

0022-generate-parentheses
1302-delete-characters-to-make-fancy-string
3396-valid-word

Binary Search

0209-minimum-size-subarray-sum
0745-find-smallest-letter-greater-than-target

Greedy

1018-largest-perimeter-triangle
2497-maximum-matching-of-players-with-trainers

Matrix

0054-spiral-matrix
0898-transpose-matrix

Simulation

0054-spiral-matrix
0898-transpose-matrix
2479-meeting-rooms-iii
3600-find-the-k-th-character-in-string-game-i

Counting

0229-majority-element-ii
1510-find-lucky-integer-in-an-array

Sliding Window

0209-minimum-size-subarray-sum

Prefix Sum

0209-minimum-size-subarray-sum

Heap (Priority Queue)

2267-minimum-difference-in-sums-after-removal-of-elements
2479-meeting-rooms-iii

Bit Manipulation

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

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A collection of LeetCode problems and my solutions.

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