A collection of LeetCode questions to ace the coding interviews! - Created using LeetHub 2.0 for Firefox

LeetCode Topics

Array

0001-two-sum
0046-permutations
0118-pascals-triangle
0169-majority-element
1407-group-the-people-given-the-group-size-they-belong-to
1478-maximum-number-of-events-that-can-be-attended
1510-find-lucky-integer-in-an-array
1656-count-good-triplets
2099-number-of-strings-that-appear-as-substrings-in-word
2265-partition-array-according-to-given-pivot
2308-divide-array-into-equal-pairs
2614-maximum-count-of-positive-integer-and-negative-integer
2856-count-complete-subarrays-in-an-array
3227-find-missing-and-repeated-values
3242-count-elements-with-maximum-frequency
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i
3490-find-the-maximum-length-of-valid-subsequence-i
3555-final-array-state-after-k-multiplication-operations-i
3846-minimum-operations-to-make-array-sum-divisible-by-k

String

0012-integer-to-roman
0017-letter-combinations-of-a-phone-number
1298-reverse-substrings-between-each-pair-of-parentheses
1460-number-of-substrings-containing-all-three-characters
1469-minimum-number-of-steps-to-make-two-strings-anagram
2099-number-of-strings-that-appear-as-substrings-in-word
2328-minimize-result-by-adding-parentheses-to-expression
2337-remove-digit-from-number-to-maximize-result
3396-valid-word
3567-convert-date-to-binary
3811-reverse-degree-of-a-string

Enumeration

1656-count-good-triplets
2328-minimize-result-by-adding-parentheses-to-expression
2337-remove-digit-from-number-to-maximize-result

Greedy

1407-group-the-people-given-the-group-size-they-belong-to
1478-maximum-number-of-events-that-can-be-attended
2337-remove-digit-from-number-to-maximize-result

Stack

0225-implement-stack-using-queues
1298-reverse-substrings-between-each-pair-of-parentheses

Hash Table

0001-two-sum
0012-integer-to-roman
0017-letter-combinations-of-a-phone-number
0169-majority-element
1407-group-the-people-given-the-group-size-they-belong-to
1460-number-of-substrings-containing-all-three-characters
1469-minimum-number-of-steps-to-make-two-strings-anagram
1500-count-largest-group
1510-find-lucky-integer-in-an-array
2308-divide-array-into-equal-pairs
2856-count-complete-subarrays-in-an-array
3227-find-missing-and-repeated-values
3242-count-elements-with-maximum-frequency

Math

0002-add-two-numbers
0009-palindrome-number
0012-integer-to-roman
1406-subtract-the-product-and-sum-of-digits-of-an-integer
1500-count-largest-group
1642-water-bottles
1889-check-if-number-is-a-sum-of-powers-of-three
2491-smallest-even-multiple
2556-convert-the-temperature
2812-find-the-maximum-achievable-number
3172-divisible-and-non-divisible-sums-difference
3227-find-missing-and-repeated-values
3336-water-bottles-ii
3555-final-array-state-after-k-multiplication-operations-i
3567-convert-date-to-binary
3846-minimum-operations-to-make-array-sum-divisible-by-k

Linked List

0002-add-two-numbers

Recursion

0002-add-two-numbers

Divide and Conquer

0169-majority-element

Sorting

0169-majority-element
1478-maximum-number-of-events-that-can-be-attended

Counting

0169-majority-element
1469-minimum-number-of-steps-to-make-two-strings-anagram
1510-find-lucky-integer-in-an-array
2308-divide-array-into-equal-pairs
2614-maximum-count-of-positive-integer-and-negative-integer
3242-count-elements-with-maximum-frequency

Backtracking

0017-letter-combinations-of-a-phone-number
0046-permutations

Dynamic Programming

0118-pascals-triangle
3490-find-the-maximum-length-of-valid-subsequence-i

Two Pointers

2265-partition-array-according-to-given-pivot

Simulation

1642-water-bottles
2265-partition-array-according-to-given-pivot
3336-water-bottles-ii
3555-final-array-state-after-k-multiplication-operations-i
3811-reverse-degree-of-a-string

Matrix

3227-find-missing-and-repeated-values

Sliding Window

1460-number-of-substrings-containing-all-three-characters
2856-count-complete-subarrays-in-an-array
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i

Binary Search

2614-maximum-count-of-positive-integer-and-negative-integer

Bit Manipulation

2308-divide-array-into-equal-pairs
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i

Queue

0225-implement-stack-using-queues
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i

Prefix Sum

3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i

Design

0225-implement-stack-using-queues

Heap (Priority Queue)

1478-maximum-number-of-events-that-can-be-attended
3555-final-array-state-after-k-multiplication-operations-i

Number Theory

2491-smallest-even-multiple