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

LeetCode Topics

Two Pointers

0026-remove-duplicates-from-sorted-array
0027-remove-element
0028-find-the-index-of-the-first-occurrence-in-a-string
0088-merge-sorted-array
0125-valid-palindrome
0283-move-zeroes
0345-reverse-vowels-of-a-string
0349-intersection-of-two-arrays
0350-intersection-of-two-arrays-ii
0541-reverse-string-ii
0861-flipping-an-image
0953-reverse-only-letters

String

0013-roman-to-integer
0014-longest-common-prefix
0020-valid-parentheses
0028-find-the-index-of-the-first-occurrence-in-a-string
0058-length-of-last-word
0067-add-binary
0125-valid-palindrome
0132-palindrome-partitioning-ii
0290-word-pattern
0345-reverse-vowels-of-a-string
0389-find-the-difference
0541-reverse-string-ii
0742-to-lower-case
0953-reverse-only-letters
1899-count-items-matching-a-rule
1960-check-if-the-sentence-is-pangram

Array

0001-two-sum
0014-longest-common-prefix
0026-remove-duplicates-from-sorted-array
0027-remove-element
0035-search-insert-position
0053-maximum-subarray
0066-plus-one
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0169-majority-element
0217-contains-duplicate
0219-contains-duplicate-ii
0268-missing-number
0283-move-zeroes
0349-intersection-of-two-arrays
0350-intersection-of-two-arrays-ii
0792-binary-search
0861-flipping-an-image
1378-cells-with-odd-values-in-a-matrix
1421-find-numbers-with-even-number-of-digits
1482-how-many-numbers-are-smaller-than-the-current-number
1505-create-target-array-in-the-given-order
1528-kids-with-the-greatest-number-of-candies
1580-shuffle-the-array
1603-running-sum-of-1d-array
1635-number-of-good-pairs
1791-richest-customer-wealth
1833-find-the-highest-altitude
1899-count-items-matching-a-rule
2048-build-array-from-permutation
2058-concatenation-of-array
3221-find-the-peaks

Divide and Conquer

0053-maximum-subarray
0169-majority-element

Dynamic Programming

0053-maximum-subarray
0070-climbing-stairs
0121-best-time-to-buy-and-sell-stock
0132-palindrome-partitioning-ii

Binary Search

0035-search-insert-position
0069-sqrtx
0268-missing-number
0349-intersection-of-two-arrays
0350-intersection-of-two-arrays-ii
0367-valid-perfect-square
0374-guess-number-higher-or-lower
0792-binary-search

Hash Table

0001-two-sum
0013-roman-to-integer
0169-majority-element
0217-contains-duplicate
0219-contains-duplicate-ii
0268-missing-number
0290-word-pattern
0349-intersection-of-two-arrays
0350-intersection-of-two-arrays-ii
0389-find-the-difference
1482-how-many-numbers-are-smaller-than-the-current-number
1635-number-of-good-pairs
1960-check-if-the-sentence-is-pangram

Sorting

0088-merge-sorted-array
0169-majority-element
0217-contains-duplicate
0268-missing-number
0349-intersection-of-two-arrays
0350-intersection-of-two-arrays-ii
0389-find-the-difference
1482-how-many-numbers-are-smaller-than-the-current-number

Math

0009-palindrome-number
0013-roman-to-integer
0066-plus-one
0067-add-binary
0069-sqrtx
0070-climbing-stairs
0268-missing-number
0367-valid-perfect-square
1378-cells-with-odd-values-in-a-matrix
1421-find-numbers-with-even-number-of-digits
1635-number-of-good-pairs

Bit Manipulation

0067-add-binary
0268-missing-number
0389-find-the-difference
0861-flipping-an-image

Matrix

0861-flipping-an-image
1791-richest-customer-wealth

Trie

0014-longest-common-prefix

Stack

0020-valid-parentheses
0094-binary-tree-inorder-traversal

Enumeration

3221-find-the-peaks

Linked List

0021-merge-two-sorted-lists
0083-remove-duplicates-from-sorted-list

Recursion

0021-merge-two-sorted-lists

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string

Simulation

0067-add-binary
0861-flipping-an-image
1378-cells-with-odd-values-in-a-matrix
1505-create-target-array-in-the-given-order
2048-build-array-from-permutation
2058-concatenation-of-array

Memoization

0070-climbing-stairs

Tree

0094-binary-tree-inorder-traversal

Depth-First Search

0094-binary-tree-inorder-traversal

Binary Tree

0094-binary-tree-inorder-traversal

Counting

0169-majority-element
1635-number-of-good-pairs

Sliding Window

0219-contains-duplicate-ii

Interactive

0374-guess-number-higher-or-lower

Prefix Sum

1603-running-sum-of-1d-array
1833-find-the-highest-altitude

Counting Sort

1482-how-many-numbers-are-smaller-than-the-current-number

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