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

LeetCode Topics

Array

0001-two-sum
0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0031-next-permutation
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
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
0136-single-number
0137-single-number-ii
0152-maximum-product-subarray
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0169-majority-element
0189-rotate-array
0204-count-primes
0229-majority-element-ii
0260-single-number-iii
0268-missing-number
0283-move-zeroes
0485-max-consecutive-ones
0540-single-element-in-a-sorted-array
0560-subarray-sum-equals-k
0674-longest-continuous-increasing-subsequence
0792-binary-search
0952-word-subsets
1044-find-common-characters
1231-replace-elements-with-greatest-element-on-right-side
1256-rank-transform-of-an-array
1468-check-if-n-and-its-double-exist
1603-running-sum-of-1d-array
2106-find-greatest-common-divisor-of-array
2210-find-target-indices-after-sorting-array
2271-rearrange-array-elements-by-sign
2691-count-vowel-strings-in-ranges
3194-find-words-containing-character
3428-find-the-xor-of-numbers-which-appear-twice

Bit Manipulation

0136-single-number
0137-single-number-ii
0260-single-number-iii
0268-missing-number
0389-find-the-difference
3428-find-the-xor-of-numbers-which-appear-twice

String

0013-roman-to-integer
0125-valid-palindrome
0389-find-the-difference
0952-word-subsets
1044-find-common-characters
1146-greatest-common-divisor-of-strings
1542-consecutive-characters
1904-second-largest-digit-in-a-string
1970-sorting-the-sentence
2168-check-if-numbers-are-ascending-in-a-sentence
2243-check-if-all-as-appears-before-all-bs
2691-count-vowel-strings-in-ranges
3194-find-words-containing-character
3426-minimum-number-of-chairs-in-a-waiting-room

Prefix Sum

0560-subarray-sum-equals-k
1603-running-sum-of-1d-array
2691-count-vowel-strings-in-ranges

Hash Table

0001-two-sum
0013-roman-to-integer
0128-longest-consecutive-sequence
0169-majority-element
0202-happy-number
0229-majority-element-ii
0268-missing-number
0389-find-the-difference
0560-subarray-sum-equals-k
0952-word-subsets
1044-find-common-characters
1256-rank-transform-of-an-array
1468-check-if-n-and-its-double-exist
1904-second-largest-digit-in-a-string
3428-find-the-xor-of-numbers-which-appear-twice

Two Pointers

0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0031-next-permutation
0075-sort-colors
0088-merge-sorted-array
0125-valid-palindrome
0189-rotate-array
0202-happy-number
0283-move-zeroes
1468-check-if-n-and-its-double-exist
2271-rearrange-array-elements-by-sign

Binary Search

0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0268-missing-number
0540-single-element-in-a-sorted-array
0792-binary-search
1468-check-if-n-and-its-double-exist
2210-find-target-indices-after-sorting-array

Sorting

0015-3sum
0018-4sum
0075-sort-colors
0088-merge-sorted-array
0169-majority-element
0229-majority-element-ii
0268-missing-number
0389-find-the-difference
1256-rank-transform-of-an-array
1468-check-if-n-and-its-double-exist
1970-sorting-the-sentence
2210-find-target-indices-after-sorting-array

Math

0007-reverse-integer
0009-palindrome-number
0013-roman-to-integer
0189-rotate-array
0202-happy-number
0204-count-primes
0258-add-digits
0268-missing-number
0507-perfect-number
0728-self-dividing-numbers
1013-fibonacci-number
1146-greatest-common-divisor-of-strings
1889-check-if-number-is-a-sum-of-powers-of-three
2083-three-divisors
2106-find-greatest-common-divisor-of-array
2491-smallest-even-multiple
2556-convert-the-temperature
2608-count-the-digits-that-divide-a-number

Divide and Conquer

0053-maximum-subarray
0169-majority-element

Counting

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

Dynamic Programming

0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock
0152-maximum-product-subarray
1013-fibonacci-number

Recursion

1013-fibonacci-number

Memoization

1013-fibonacci-number

Simulation

0258-add-digits
2271-rearrange-array-elements-by-sign
3426-minimum-number-of-chairs-in-a-waiting-room

Union Find

0128-longest-consecutive-sequence

Number Theory

0204-count-primes
0258-add-digits
2083-three-divisors
2106-find-greatest-common-divisor-of-array
2491-smallest-even-multiple

Enumeration

0204-count-primes
2083-three-divisors