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

LeetCode Topics

Array

0001-two-sum
0004-median-of-two-sorted-arrays
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
0053-maximum-subarray
0075-sort-colors
0081-search-in-rotated-sorted-array-ii
0121-best-time-to-buy-and-sell-stock
0128-longest-consecutive-sequence
0136-single-number
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0169-majority-element
0204-count-primes
0215-kth-largest-element-in-an-array
0217-contains-duplicate
0229-majority-element-ii
0268-missing-number
0287-find-the-duplicate-number
0414-third-maximum-number
0455-assign-cookies
0540-single-element-in-a-sorted-array
0560-subarray-sum-equals-k
0792-binary-search
0890-lemonade-change
0907-koko-eating-bananas
0941-sort-array-by-parity
1217-relative-sort-array
1408-find-the-smallest-divisor-given-a-threshold
1538-maximum-points-you-can-obtain-from-cards
1730-special-array-with-x-elements-greater-than-or-equal-x
2271-rearrange-array-elements-by-sign

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
0162-find-peak-element
0268-missing-number
0278-first-bad-version
0287-find-the-duplicate-number
0367-valid-perfect-square
0374-guess-number-higher-or-lower
0441-arranging-coins
0540-single-element-in-a-sorted-array
0792-binary-search
0907-koko-eating-bananas
1408-find-the-smallest-divisor-given-a-threshold
1730-special-array-with-x-elements-greater-than-or-equal-x

String

0003-longest-substring-without-repeating-characters
0013-roman-to-integer
0022-generate-parentheses
0028-find-the-index-of-the-first-occurrence-in-a-string
0058-length-of-last-word
0242-valid-anagram
0412-fizz-buzz
0812-rotate-string
3468-find-the-encrypted-string

Two Pointers

0027-remove-element
0028-find-the-index-of-the-first-occurrence-in-a-string
0031-next-permutation
0075-sort-colors
0287-find-the-duplicate-number
0455-assign-cookies
0941-sort-array-by-parity
2271-rearrange-array-elements-by-sign

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string
0812-rotate-string

Greedy

0455-assign-cookies
0890-lemonade-change

Sorting

0075-sort-colors
0169-majority-element
0215-kth-largest-element-in-an-array
0217-contains-duplicate
0229-majority-element-ii
0242-valid-anagram
0268-missing-number
0414-third-maximum-number
0455-assign-cookies
0941-sort-array-by-parity
1217-relative-sort-array
1730-special-array-with-x-elements-greater-than-or-equal-x

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0013-roman-to-integer
0128-longest-consecutive-sequence
0169-majority-element
0217-contains-duplicate
0229-majority-element-ii
0242-valid-anagram
0268-missing-number
0560-subarray-sum-equals-k
1217-relative-sort-array

Sliding Window

0003-longest-substring-without-repeating-characters
1538-maximum-points-you-can-obtain-from-cards

Prefix Sum

0560-subarray-sum-equals-k
1538-maximum-points-you-can-obtain-from-cards

Bit Manipulation

0136-single-number
0231-power-of-two
0268-missing-number
0287-find-the-duplicate-number

Math

0013-roman-to-integer
0050-powx-n
0069-sqrtx
0204-count-primes
0231-power-of-two
0258-add-digits
0263-ugly-number
0268-missing-number
0367-valid-perfect-square
0412-fizz-buzz
0441-arranging-coins
0507-perfect-number
0728-self-dividing-numbers
2630-alternating-digit-sum

Recursion

0050-powx-n
0206-reverse-linked-list
0231-power-of-two

Simulation

0258-add-digits
0412-fizz-buzz
2271-rearrange-array-elements-by-sign

Dynamic Programming

0022-generate-parentheses
0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock

Divide and Conquer

0004-median-of-two-sorted-arrays
0053-maximum-subarray
0169-majority-element
0215-kth-largest-element-in-an-array

Counting

0169-majority-element
0229-majority-element-ii

Enumeration

0204-count-primes

Number Theory

0204-count-primes
0258-add-digits

Interactive

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

Counting Sort

1217-relative-sort-array

Union Find

0128-longest-consecutive-sequence

Heap (Priority Queue)

0215-kth-largest-element-in-an-array

Quickselect

0215-kth-largest-element-in-an-array

Backtracking

0022-generate-parentheses

Linked List

0206-reverse-linked-list