Problem-Solving-On-LeetCode (self Practice)

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

LeetCode Topics

Array

0001-two-sum
0011-container-with-most-water
0026-remove-duplicates-from-sorted-array
0027-remove-element
0035-search-insert-position
0238-product-of-array-except-self
0283-move-zeroes
0334-increasing-triplet-subsequence
0605-can-place-flowers
0643-maximum-average-subarray-i
0724-find-pivot-index
0735-asteroid-collision
1046-max-consecutive-ones-iii
1319-unique-number-of-occurrences
1392-find-the-difference-of-two-arrays
1528-kids-with-the-greatest-number-of-candies
1586-longest-subarray-of-1s-after-deleting-one-element
1798-max-number-of-k-sum-pairs
1833-find-the-highest-altitude
1849-maximum-absolute-sum-of-any-subarray
1878-check-if-array-is-sorted-and-rotated
2107-find-unique-binary-string
2308-divide-array-into-equal-pairs
2428-equal-row-and-column-pairs
3075-maximize-happiness-of-selected-children
3429-special-array-i

Hash Table

0001-two-sum
0013-roman-to-integer
1319-unique-number-of-occurrences
1392-find-the-difference-of-two-arrays
1777-determine-if-two-strings-are-close
1798-max-number-of-k-sum-pairs
2107-find-unique-binary-string
2308-divide-array-into-equal-pairs
2428-equal-row-and-column-pairs

Math

0009-palindrome-number
0013-roman-to-integer
1146-greatest-common-divisor-of-strings

String

0013-roman-to-integer
0014-longest-common-prefix
0020-valid-parentheses
0028-find-the-index-of-the-first-occurrence-in-a-string
0151-reverse-words-in-a-string
0345-reverse-vowels-of-a-string
0392-is-subsequence
0443-string-compression
1146-greatest-common-divisor-of-strings
1567-maximum-number-of-vowels-in-a-substring-of-given-length
1777-determine-if-two-strings-are-close
1894-merge-strings-alternately
2107-find-unique-binary-string
2470-removing-stars-from-a-string

Trie

0014-longest-common-prefix

Stack

0020-valid-parentheses
0735-asteroid-collision
2470-removing-stars-from-a-string

Two Pointers

0011-container-with-most-water
0026-remove-duplicates-from-sorted-array
0027-remove-element
0028-find-the-index-of-the-first-occurrence-in-a-string
0151-reverse-words-in-a-string
0283-move-zeroes
0345-reverse-vowels-of-a-string
0392-is-subsequence
0443-string-compression
1798-max-number-of-k-sum-pairs
1894-merge-strings-alternately

String Matching

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

Binary Search

0035-search-insert-position
1046-max-consecutive-ones-iii

Greedy

0011-container-with-most-water
0334-increasing-triplet-subsequence
0605-can-place-flowers
3075-maximize-happiness-of-selected-children

Prefix Sum

0238-product-of-array-except-self
0724-find-pivot-index
1046-max-consecutive-ones-iii
1833-find-the-highest-altitude

Dynamic Programming

0392-is-subsequence
1586-longest-subarray-of-1s-after-deleting-one-element
1849-maximum-absolute-sum-of-any-subarray

Sorting

1777-determine-if-two-strings-are-close
1798-max-number-of-k-sum-pairs
3075-maximize-happiness-of-selected-children

Database

0175-combine-two-tables
0180-consecutive-numbers
0181-employees-earning-more-than-their-managers
0182-duplicate-emails
0183-customers-who-never-order
0196-delete-duplicate-emails
0197-rising-temperature
0570-managers-with-at-least-5-direct-reports
0577-employee-bonus
0584-find-customer-referee
0586-customer-placing-the-largest-number-of-orders
0595-big-countries
0596-classes-more-than-5-students
0619-biggest-single-number
0620-not-boring-movies
0626-exchange-seats
1135-customers-who-bought-all-products
1153-product-sales-analysis-i
1155-product-sales-analysis-iii
1161-project-employees-i
1179-game-play-analysis-i
1182-game-play-analysis-iv
1245-user-activity-for-the-past-30-days-i
1258-article-views-i
1278-product-price-at-a-given-date
1292-immediate-food-delivery-ii
1317-monthly-transactions-i
1327-last-person-to-fit-in-the-bus
1338-queries-quality-and-percentage
1390-average-selling-price
1415-students-and-examinations
1509-replace-employee-id-with-the-unique-identifier
1724-customer-who-visited-but-did-not-make-any-transactions
1773-percentage-of-users-attended-a-contest
1801-average-time-of-process-per-machine
1827-invalid-tweets
1877-find-followers-count
1882-the-number-of-employees-which-report-to-each-employee
1908-recyclable-and-low-fat-products
1942-primary-department-for-each-employee
2057-count-salary-categories
2087-confirmation-rate
2127-employees-whose-manager-left-the-company
2495-number-of-unique-subjects-taught-by-each-teacher

Sliding Window

0643-maximum-average-subarray-i
1046-max-consecutive-ones-iii
1567-maximum-number-of-vowels-in-a-substring-of-given-length
1586-longest-subarray-of-1s-after-deleting-one-element

Counting

1777-determine-if-two-strings-are-close
2308-divide-array-into-equal-pairs

Simulation

0735-asteroid-collision
2428-equal-row-and-column-pairs
2470-removing-stars-from-a-string

Backtracking

2107-find-unique-binary-string

Matrix

2428-equal-row-and-column-pairs

Bit Manipulation

2308-divide-array-into-equal-pairs