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Leetcode

Leetcode problems solution

Array

0349-intersection-of-two-arrays
1319-unique-number-of-occurrences

Hash Table

0349-intersection-of-two-arrays
1319-unique-number-of-occurrences

Two Pointers

0349-intersection-of-two-arrays

Binary Search

0349-intersection-of-two-arrays

Sorting

0349-intersection-of-two-arrays

LeetCode Topics

Math

0002-add-two-numbers
0009-palindrome-number
0013-roman-to-integer
0029-divide-two-integers
0066-plus-one
0069-sqrtx
0172-factorial-trailing-zeroes
0189-rotate-array
0445-add-two-numbers-ii
0633-sum-of-square-numbers
1031-add-to-array-form-of-integer
1146-greatest-common-divisor-of-strings

String

0005-longest-palindromic-substring
0013-roman-to-integer
0014-longest-common-prefix
0044-wildcard-matching
0125-valid-palindrome
1146-greatest-common-divisor-of-strings
1894-merge-strings-alternately

Dynamic Programming

0005-longest-palindromic-substring
0044-wildcard-matching
0045-jump-game-ii
0118-pascals-triangle
0119-pascals-triangle-ii
0410-split-array-largest-sum

Greedy

0044-wildcard-matching
0045-jump-game-ii
0410-split-array-largest-sum

Recursion

0002-add-two-numbers
0044-wildcard-matching

Linked List

0002-add-two-numbers
0445-add-two-numbers-ii

Stack

0445-add-two-numbers-ii

Two Pointers

0005-longest-palindromic-substring
0015-3sum
0026-remove-duplicates-from-sorted-array
0027-remove-element
0031-next-permutation
0075-sort-colors
0088-merge-sorted-array
0125-valid-palindrome
0167-two-sum-ii-input-array-is-sorted
0189-rotate-array
0283-move-zeroes
0287-find-the-duplicate-number
0633-sum-of-square-numbers
1894-merge-strings-alternately
2551-apply-operations-to-an-array

Hash Table

0013-roman-to-integer
0041-first-missing-positive
0169-majority-element
0442-find-all-duplicates-in-an-array
1319-unique-number-of-occurrences

Trie

0014-longest-common-prefix

Array

0004-median-of-two-sorted-arrays
0015-3sum
0026-remove-duplicates-from-sorted-array
0027-remove-element
0031-next-permutation
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0041-first-missing-positive
0045-jump-game-ii
0054-spiral-matrix
0066-plus-one
0075-sort-colors
0081-search-in-rotated-sorted-array-ii
0088-merge-sorted-array
0118-pascals-triangle
0119-pascals-triangle-ii
0136-single-number
0137-single-number-ii
0153-find-minimum-in-rotated-sorted-array
0167-two-sum-ii-input-array-is-sorted
0169-majority-element
0189-rotate-array
0240-search-a-2d-matrix-ii
0260-single-number-iii
0283-move-zeroes
0287-find-the-duplicate-number
0410-split-array-largest-sum
0442-find-all-duplicates-in-an-array
0724-find-pivot-index
0792-binary-search
0882-peak-index-in-a-mountain-array
1031-add-to-array-form-of-integer
1319-unique-number-of-occurrences
1574-maximum-product-of-two-elements-in-an-array
1605-minimum-number-of-days-to-make-m-bouquets
1878-check-if-array-is-sorted-and-rotated
2551-apply-operations-to-an-array

Bit Manipulation

0029-divide-two-integers
0136-single-number
0137-single-number-ii
0260-single-number-iii
0287-find-the-duplicate-number

Binary Search

0004-median-of-two-sorted-arrays
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0069-sqrtx
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0167-two-sum-ii-input-array-is-sorted
0240-search-a-2d-matrix-ii
0278-first-bad-version
0287-find-the-duplicate-number
0374-guess-number-higher-or-lower
0410-split-array-largest-sum
0633-sum-of-square-numbers
0792-binary-search
0882-peak-index-in-a-mountain-array
1605-minimum-number-of-days-to-make-m-bouquets

Sorting

0015-3sum
0075-sort-colors
0088-merge-sorted-array
0169-majority-element
1574-maximum-product-of-two-elements-in-an-array

Matrix

0054-spiral-matrix
0240-search-a-2d-matrix-ii

Simulation

0054-spiral-matrix
2551-apply-operations-to-an-array

Divide and Conquer

0004-median-of-two-sorted-arrays
0169-majority-element
0240-search-a-2d-matrix-ii

Counting

0169-majority-element

Prefix Sum

0410-split-array-largest-sum
0724-find-pivot-index

Interactive

0278-first-bad-version
0374-guess-number-higher-or-lower

Heap (Priority Queue)

1574-maximum-product-of-two-elements-in-an-array

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