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Collection of LeetCode questions to ace the coding interview! - Created using [LeetHub](https://github.com/QasimWani/LeetHub)

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0017-letter-combinations-of-a-phone-number
0017-letter-combinations-of-a-phone-number
 
 
0128-longest-consecutive-sequence
0128-longest-consecutive-sequence
 
 
0137-single-number-ii
0137-single-number-ii
 
 
0151-reverse-words-in-a-string
0151-reverse-words-in-a-string
 
 
0162-find-peak-element
0162-find-peak-element
 
 
0175-combine-two-tables
0175-combine-two-tables
 
 
0179-largest-number
0179-largest-number
 
 
0181-employees-earning-more-than-their-managers
0181-employees-earning-more-than-their-managers
 
 
0197-rising-temperature
0197-rising-temperature
 
 
0213-house-robber-ii
0213-house-robber-ii
 
 
0215-kth-largest-element-in-an-array
0215-kth-largest-element-in-an-array
 
 
0222-count-complete-tree-nodes
0222-count-complete-tree-nodes
 
 
0383-ransom-note
0383-ransom-note
 
 
0463-island-perimeter
0463-island-perimeter
 
 
0575-distribute-candies
0575-distribute-candies
 
 
0584-find-customer-referee
0584-find-customer-referee
 
 
0595-big-countries
0595-big-countries
 
 
0670-maximum-swap
0670-maximum-swap
 
 
0674-longest-continuous-increasing-subsequence
0674-longest-continuous-increasing-subsequence
 
 
0680-valid-palindrome-ii
0680-valid-palindrome-ii
 
 
0957-minimum-add-to-make-parentheses-valid
0957-minimum-add-to-make-parentheses-valid
 
 
0988-flip-equivalent-binary-trees
0988-flip-equivalent-binary-trees
 
 
1-two-sum
1-two-sum
 
 
100-same-tree
100-same-tree
 
 
101-symmetric-tree
101-symmetric-tree
 
 
1013-partition-array-into-three-parts-with-equal-sum
1013-partition-array-into-three-parts-with-equal-sum
 
 
102-binary-tree-level-order-traversal
102-binary-tree-level-order-traversal
 
 
104-maximum-depth-of-binary-tree
104-maximum-depth-of-binary-tree
 
 
11-container-with-most-water
11-container-with-most-water
 
 
111-minimum-depth-of-binary-tree
111-minimum-depth-of-binary-tree
 
 
112-path-sum
112-path-sum
 
 
113-path-sum-ii
113-path-sum-ii
 
 
1153-product-sales-analysis-i
1153-product-sales-analysis-i
 
 
118-pascals-triangle
118-pascals-triangle
 
 
119-pascals-triangle-ii
119-pascals-triangle-ii
 
 
12-integer-to-roman
12-integer-to-roman
 
 
120-triangle
120-triangle
 
 
121-best-time-to-buy-and-sell-stock
121-best-time-to-buy-and-sell-stock
 
 
125-valid-palindrome
125-valid-palindrome
 
 
1258-article-views-i
1258-article-views-i
 
 
1266-minimum-time-visiting-all-points
1266-minimum-time-visiting-all-points
 
 
129-sum-root-to-leaf-numbers
129-sum-root-to-leaf-numbers
 
 
13-roman-to-integer
13-roman-to-integer
 
 
130-surrounded-regions
130-surrounded-regions
 
 
1304-longest-happy-string
1304-longest-happy-string
 
 
1342-number-of-steps-to-reduce-a-number-to-zero
1342-number-of-steps-to-reduce-a-number-to-zero
 
 
136-single-number
136-single-number
 
 
1385-find-the-distance-value-between-two-arrays
1385-find-the-distance-value-between-two-arrays
 
 
14-longest-common-prefix
14-longest-common-prefix
 
 
141-linked-list-cycle
141-linked-list-cycle
 
 
142-linked-list-cycle-ii
142-linked-list-cycle-ii
 
 
144-binary-tree-preorder-traversal
144-binary-tree-preorder-traversal
 
 
145-binary-tree-postorder-traversal
145-binary-tree-postorder-traversal
 
 
1480-running-sum-of-1d-array
1480-running-sum-of-1d-array
 
 
15-3sum
15-3sum
 
 
1509-replace-employee-id-with-the-unique-identifier
1509-replace-employee-id-with-the-unique-identifier
 
 
1518-water-bottles
1518-water-bottles
 
 
152-maximum-product-subarray
152-maximum-product-subarray
 
 
1578-minimum-time-to-make-rope-colorful
1578-minimum-time-to-make-rope-colorful
 
 
16-3sum-closest
16-3sum-closest
 
 
160-intersection-of-two-linked-lists
160-intersection-of-two-linked-lists
 
 
1620-check-if-array-pairs-are-divisible-by-k
1620-check-if-array-pairs-are-divisible-by-k
 
 
167-two-sum-ii-input-array-is-sorted
167-two-sum-ii-input-array-is-sorted
 
 
1678-goal-parser-interpretation
1678-goal-parser-interpretation
 
 
168-excel-sheet-column-title
168-excel-sheet-column-title
 
 
1684-count-the-number-of-consistent-strings
1684-count-the-number-of-consistent-strings
 
 
169-majority-element
169-majority-element
 
 
171-excel-sheet-column-number
171-excel-sheet-column-number
 
 
1724-customer-who-visited-but-did-not-make-any-transactions
1724-customer-who-visited-but-did-not-make-any-transactions
 
 
1827-invalid-tweets
1827-invalid-tweets
 
 
189-rotate-array
189-rotate-array
 
 
19-remove-nth-node-from-end-of-list
19-remove-nth-node-from-end-of-list
 
 
1908-recyclable-and-low-fat-products
1908-recyclable-and-low-fat-products
 
 
191-number-of-1-bits
191-number-of-1-bits
 
 
198-house-robber
198-house-robber
 
 
199-binary-tree-right-side-view
199-binary-tree-right-side-view
 
 
1991-find-the-middle-index-in-array
1991-find-the-middle-index-in-array
 
 
2-add-two-numbers
2-add-two-numbers
 
 
20-valid-parentheses
20-valid-parentheses
 
 
200-number-of-islands
200-number-of-islands
 
 
202-happy-number
202-happy-number
 
 
203-remove-linked-list-elements
203-remove-linked-list-elements
 
 
204-count-primes
204-count-primes
 
 
205-isomorphic-strings
205-isomorphic-strings
 
 
206-reverse-linked-list
206-reverse-linked-list
 
 
209-minimum-size-subarray-sum
209-minimum-size-subarray-sum
 
 
21-merge-two-sorted-lists
21-merge-two-sorted-lists
 
 
2119-a-number-after-a-double-reversal
2119-a-number-after-a-double-reversal
 
 
213-house-robber-ii
213-house-robber-ii
 
 
215-kth-largest-element-in-an-array
215-kth-largest-element-in-an-array
 
 
2169-count-operations-to-obtain-zero
2169-count-operations-to-obtain-zero
 
 
217-contains-duplicate
217-contains-duplicate
 
 
2180-count-integers-with-even-digit-sum
2180-count-integers-with-even-digit-sum
 
 
219-contains-duplicate-ii
219-contains-duplicate-ii
 
 
2215-find-the-difference-of-two-arrays
2215-find-the-difference-of-two-arrays
 
 
2221-find-triangular-sum-of-an-array
2221-find-triangular-sum-of-an-array
 
 
2239-find-closest-number-to-zero
2239-find-closest-number-to-zero
 
 
2243-calculate-digit-sum-of-a-string
2243-calculate-digit-sum-of-a-string
 
 
226-invert-binary-tree
226-invert-binary-tree
 
 
2273-find-resultant-array-after-removing-anagrams
2273-find-resultant-array-after-removing-anagrams
 
 

Repository files navigation

leetcode-problems

Collection of LeetCode questions to ace the coding interview! - Created using LeetHub

LeetCode Topics

Hash Table
0017-letter-combinations-of-a-phone-number
0128-longest-consecutive-sequence
0383-ransom-note
1620-check-if-array-pairs-are-divisible-by-k

String
0017-letter-combinations-of-a-phone-number
0151-reverse-words-in-a-string
0179-largest-number
0383-ransom-note
0957-minimum-add-to-make-parentheses-valid
1304-longest-happy-string
3195-separate-black-and-white-balls
3451-string-compression-iii

Counting
0383-ransom-note
1620-check-if-array-pairs-are-divisible-by-k

Two Pointers
0151-reverse-words-in-a-string
3195-separate-black-and-white-balls

Array
0128-longest-consecutive-sequence
0137-single-number-ii
0162-find-peak-element
0179-largest-number
0213-house-robber-ii
0215-kth-largest-element-in-an-array
1620-check-if-array-pairs-are-divisible-by-k
2616-maximal-score-after-applying-k-operations

Union Find
0128-longest-consecutive-sequence

Database
0175-combine-two-tables
0181-employees-earning-more-than-their-managers
0197-rising-temperature
0584-find-customer-referee
0595-big-countries
1153-product-sales-analysis-i
1258-article-views-i
1509-replace-employee-id-with-the-unique-identifier
1724-customer-who-visited-but-did-not-make-any-transactions
1827-invalid-tweets
1908-recyclable-and-low-fat-products

Greedy
0179-largest-number
0670-maximum-swap
0957-minimum-add-to-make-parentheses-valid
1304-longest-happy-string
2616-maximal-score-after-applying-k-operations
3195-separate-black-and-white-balls

Heap (Priority Queue)
0215-kth-largest-element-in-an-array
1304-longest-happy-string
2616-maximal-score-after-applying-k-operations

Binary Search
0162-find-peak-element
0222-count-complete-tree-nodes

Bit Manipulation
0137-single-number-ii
0222-count-complete-tree-nodes

Tree
0222-count-complete-tree-nodes
0988-flip-equivalent-binary-trees
2646-kth-largest-sum-in-a-binary-tree

Binary Tree
0222-count-complete-tree-nodes
0988-flip-equivalent-binary-trees
2646-kth-largest-sum-in-a-binary-tree

Stack
0957-minimum-add-to-make-parentheses-valid

Backtracking
0017-letter-combinations-of-a-phone-number

Dynamic Programming
0213-house-robber-ii

Divide and Conquer
0215-kth-largest-element-in-an-array

Sorting
0179-largest-number
0215-kth-largest-element-in-an-array
2646-kth-largest-sum-in-a-binary-tree

Quickselect
0215-kth-largest-element-in-an-array

Math
0670-maximum-swap

Breadth-First Search
2646-kth-largest-sum-in-a-binary-tree

Depth-First Search
0988-flip-equivalent-binary-trees

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Collection of LeetCode questions to ace the coding interview! - Created using [LeetHub](https://github.com/QasimWani/LeetHub)

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