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

LeetCode Topics

Array

0001-two-sum
0027-remove-element
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0075-sort-colors
0079-word-search
0081-search-in-rotated-sorted-array-ii
0128-longest-consecutive-sequence
0136-single-number
0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
0167-two-sum-ii-input-array-is-sorted
0238-product-of-array-except-self
0303-range-sum-query-immutable
0334-increasing-triplet-subsequence
0724-find-pivot-index
1514-minimum-value-to-get-positive-step-by-step-sum
2737-row-with-maximum-ones
2917-count-pairs-whose-sum-is-less-than-target
3778-transform-array-by-parity

Binary Search

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
0154-find-minimum-in-rotated-sorted-array-ii
0167-two-sum-ii-input-array-is-sorted
2917-count-pairs-whose-sum-is-less-than-target

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0013-roman-to-integer
0128-longest-consecutive-sequence

Linked List

0002-add-two-numbers

Math

0002-add-two-numbers
0007-reverse-integer
0009-palindrome-number
0013-roman-to-integer
0029-divide-two-integers
0069-sqrtx
0070-climbing-stairs
1630-count-odd-numbers-in-an-interval-range

Recursion

0002-add-two-numbers
0010-regular-expression-matching

Bit Manipulation

0029-divide-two-integers
0136-single-number

Dynamic Programming

0010-regular-expression-matching
0032-longest-valid-parentheses
0070-climbing-stairs
0678-valid-parenthesis-string

Memoization

0070-climbing-stairs

String

0003-longest-substring-without-repeating-characters
0010-regular-expression-matching
0013-roman-to-integer
0020-valid-parentheses
0032-longest-valid-parentheses
0058-length-of-last-word
0079-word-search
0151-reverse-words-in-a-string
0345-reverse-vowels-of-a-string
0678-valid-parenthesis-string

Backtracking

0079-word-search

Depth-First Search

0079-word-search

Matrix

0079-word-search
2737-row-with-maximum-ones

Union Find

0128-longest-consecutive-sequence

Prefix Sum

0238-product-of-array-except-self
0303-range-sum-query-immutable
0724-find-pivot-index
1514-minimum-value-to-get-positive-step-by-step-sum

Design

0303-range-sum-query-immutable

Sliding Window

0003-longest-substring-without-repeating-characters

Two Pointers

0027-remove-element
0075-sort-colors
0151-reverse-words-in-a-string
0167-two-sum-ii-input-array-is-sorted
0345-reverse-vowels-of-a-string
2917-count-pairs-whose-sum-is-less-than-target

Stack

0020-valid-parentheses
0032-longest-valid-parentheses
0678-valid-parenthesis-string

Sorting

0075-sort-colors
2917-count-pairs-whose-sum-is-less-than-target
3778-transform-array-by-parity

Counting

3778-transform-array-by-parity

Greedy

0334-increasing-triplet-subsequence
0678-valid-parenthesis-string

Database

0175-combine-two-tables
0176-second-highest-salary
0182-duplicate-emails
0183-customers-who-never-order
0196-delete-duplicate-emails
0577-employee-bonus
0586-customer-placing-the-largest-number-of-orders
0596-classes-with-at-least-5-students
0619-biggest-single-number
0620-not-boring-movies
1153-product-sales-analysis-i
1161-project-employees-i
1179-game-play-analysis-i
1390-average-selling-price
1625-group-sold-products-by-the-date
1670-patients-with-a-condition
1724-customer-who-visited-but-did-not-make-any-transactions
1801-average-time-of-process-per-machine
1877-find-followers-count