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

LeetCode Topics

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0049-group-anagrams
0128-longest-consecutive-sequence
0242-valid-anagram
0290-word-pattern
0424-longest-repeating-character-replacement
0500-keyboard-row
0560-subarray-sum-equals-k
0599-minimum-index-sum-of-two-lists
0940-fruit-into-baskets
0966-binary-subarrays-with-sum
1034-subarrays-with-k-different-integers
1370-count-number-of-nice-subarrays
1460-number-of-substrings-containing-all-three-characters

String

0003-longest-substring-without-repeating-characters
0005-longest-palindromic-substring
0049-group-anagrams
0125-valid-palindrome
0151-reverse-words-in-a-string
0242-valid-anagram
0290-word-pattern
0345-reverse-vowels-of-a-string
0392-is-subsequence
0424-longest-repeating-character-replacement
0500-keyboard-row
0516-longest-palindromic-subsequence
0599-minimum-index-sum-of-two-lists
0647-palindromic-substrings
0680-valid-palindrome-ii
1250-longest-common-subsequence
1460-number-of-substrings-containing-all-three-characters
1542-consecutive-characters
1737-maximum-nesting-depth-of-the-parentheses

Array

0001-two-sum
0011-container-with-most-water
0026-remove-duplicates-from-sorted-array
0033-search-in-rotated-sorted-array
0035-search-insert-position
0049-group-anagrams
0053-maximum-subarray
0075-sort-colors
0081-search-in-rotated-sorted-array-ii
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0128-longest-consecutive-sequence
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0189-rotate-array
0204-count-primes
0283-move-zeroes
0485-max-consecutive-ones
0500-keyboard-row
0540-single-element-in-a-sorted-array
0560-subarray-sum-equals-k
0599-minimum-index-sum-of-two-lists
0605-can-place-flowers
0792-binary-search
0940-fruit-into-baskets
0966-binary-subarrays-with-sum
1034-subarrays-with-k-different-integers
1046-max-consecutive-ones-iii
1370-count-number-of-nice-subarrays
1538-maximum-points-you-can-obtain-from-cards
1646-kth-missing-positive-number
1878-check-if-array-is-sorted-and-rotated
1966-frequency-of-the-most-frequent-element
2614-maximum-count-of-positive-integer-and-negative-integer

Two Pointers

0005-longest-palindromic-substring
0011-container-with-most-water
0026-remove-duplicates-from-sorted-array
0075-sort-colors
0088-merge-sorted-array
0125-valid-palindrome
0151-reverse-words-in-a-string
0189-rotate-array
0283-move-zeroes
0345-reverse-vowels-of-a-string
0392-is-subsequence
0647-palindromic-substrings
0680-valid-palindrome-ii

Greedy

0011-container-with-most-water
0605-can-place-flowers
0680-valid-palindrome-ii
1966-frequency-of-the-most-frequent-element

Sorting

0049-group-anagrams
0075-sort-colors
0088-merge-sorted-array
0242-valid-anagram
1966-frequency-of-the-most-frequent-element

Math

0009-palindrome-number
0189-rotate-array
0204-count-primes
1013-fibonacci-number
1370-count-number-of-nice-subarrays

Dynamic Programming

0005-longest-palindromic-substring
0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock
0392-is-subsequence
0516-longest-palindromic-subsequence
0647-palindromic-substrings
1013-fibonacci-number
1250-longest-common-subsequence

Union Find

0128-longest-consecutive-sequence

Sliding Window

0003-longest-substring-without-repeating-characters
0424-longest-repeating-character-replacement
0940-fruit-into-baskets
0966-binary-subarrays-with-sum
1034-subarrays-with-k-different-integers
1046-max-consecutive-ones-iii
1370-count-number-of-nice-subarrays
1460-number-of-substrings-containing-all-three-characters
1538-maximum-points-you-can-obtain-from-cards
1966-frequency-of-the-most-frequent-element

Prefix Sum

0560-subarray-sum-equals-k
0966-binary-subarrays-with-sum
1046-max-consecutive-ones-iii
1370-count-number-of-nice-subarrays
1538-maximum-points-you-can-obtain-from-cards
1966-frequency-of-the-most-frequent-element

Binary Search

0033-search-in-rotated-sorted-array
0035-search-insert-position
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0540-single-element-in-a-sorted-array
0792-binary-search
1046-max-consecutive-ones-iii
1646-kth-missing-positive-number
1966-frequency-of-the-most-frequent-element
2614-maximum-count-of-positive-integer-and-negative-integer

Counting

1034-subarrays-with-k-different-integers
2614-maximum-count-of-positive-integer-and-negative-integer

Enumeration

0204-count-primes

Number Theory

0204-count-primes

Recursion

1013-fibonacci-number

Memoization

1013-fibonacci-number

Divide and Conquer

0053-maximum-subarray

Bit Manipulation

0461-hamming-distance

Stack

1737-maximum-nesting-depth-of-the-parentheses