LC-Solutions

Collection of LeetCode questions to ace the coding interview! Author: github.com/J-Ankit2020

My Java Code for LeetCode OJ.

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#	Title	Difficulty	Solution
1	Two Sum	Easy	Solution
2	Add Two Numbers	Medium	Solution
3	Longest Substring Without Repeating Characters	Medium	Solution
4	Median of Two Sorted Arrays	Hard	Solution
5	Longest Palindromic Substring	Medium	Solution
6	ZigZag Conversion	Medium	Solution
7	Reverse Integer	Easy	Solution
8	String to Integer (atoi)	Medium	Solution
9	Palindrome Number	Easy	Solution

FAQ

Read `CONTRIBUTING.md` to get started with contributing to this repository.

Space Complexity

Assume that the solution will contain the best time and space complexity

Name		Name	Last commit message	Last commit date
Latest commit History 1,729 Commits
0 - 1 Knapsack Problem - GFG		0 - 1 Knapsack Problem - GFG
0001-two-sum		0001-two-sum
0004-median-of-two-sorted-arrays		0004-median-of-two-sorted-arrays
0012-integer-to-roman		0012-integer-to-roman
0019-remove-nth-node-from-end-of-list		0019-remove-nth-node-from-end-of-list
0025-reverse-nodes-in-k-group		0025-reverse-nodes-in-k-group
0026-remove-duplicates-from-sorted-array		0026-remove-duplicates-from-sorted-array
0038-count-and-say		0038-count-and-say
0049-group-anagrams		0049-group-anagrams
0057-insert-interval		0057-insert-interval
0061-rotate-list		0061-rotate-list
0076-minimum-window-substring		0076-minimum-window-substring
0122-best-time-to-buy-and-sell-stock-ii		0122-best-time-to-buy-and-sell-stock-ii
0123-best-time-to-buy-and-sell-stock-iii		0123-best-time-to-buy-and-sell-stock-iii
0130-surrounded-regions		0130-surrounded-regions
0138-copy-list-with-random-pointer		0138-copy-list-with-random-pointer
0141-linked-list-cycle		0141-linked-list-cycle
0142-linked-list-cycle-ii		0142-linked-list-cycle-ii
0160-intersection-of-two-linked-lists		0160-intersection-of-two-linked-lists
0219-contains-duplicate-ii		0219-contains-duplicate-ii
0237-delete-node-in-a-linked-list		0237-delete-node-in-a-linked-list
0238-product-of-array-except-self		0238-product-of-array-except-self
0334-increasing-triplet-subsequence		0334-increasing-triplet-subsequence
0433-minimum-genetic-mutation		0433-minimum-genetic-mutation
0523-continuous-subarray-sum		0523-continuous-subarray-sum
0542-01-matrix		0542-01-matrix
0692-top-k-frequent-words		0692-top-k-frequent-words
0703-kth-largest-element-in-a-stream		0703-kth-largest-element-in-a-stream
0733-flood-fill		0733-flood-fill
0766-toeplitz-matrix		0766-toeplitz-matrix
0785-is-graph-bipartite		0785-is-graph-bipartite
0802-find-eventual-safe-states		0802-find-eventual-safe-states
0976-largest-perimeter-triangle		0976-largest-perimeter-triangle
1-two-sum		1-two-sum
1004-max-consecutive-ones-iii		1004-max-consecutive-ones-iii
1014-k-closest-points-to-origin		1014-k-closest-points-to-origin
1016-subarray-sums-divisible-by-k		1016-subarray-sums-divisible-by-k
1019-squares-of-a-sorted-array		1019-squares-of-a-sorted-array
1020-number-of-enclaves		1020-number-of-enclaves
1029-vertical-order-traversal-of-a-binary-tree		1029-vertical-order-traversal-of-a-binary-tree
103-binary-tree-zigzag-level-order-traversal		103-binary-tree-zigzag-level-order-traversal
1034-subarrays-with-k-different-integers		1034-subarrays-with-k-different-integers
1036-rotting-oranges		1036-rotting-oranges
1041-robot-bounded-in-circle		1041-robot-bounded-in-circle
1044-find-common-characters		1044-find-common-characters
106-construct-binary-tree-from-inorder-and-postorder-traversal		106-construct-binary-tree-from-inorder-and-postorder-traversal
108-convert-sorted-array-to-binary-search-tree		108-convert-sorted-array-to-binary-search-tree
1092-shortest-common-supersequence		1092-shortest-common-supersequence
112-path-sum		112-path-sum
113-path-sum-ii		113-path-sum-ii
1143-longest-common-subsequence		1143-longest-common-subsequence
115-distinct-subsequences		115-distinct-subsequences
1155-number-of-dice-rolls-with-target-sum		1155-number-of-dice-rolls-with-target-sum
116-populating-next-right-pointers-in-each-node		116-populating-next-right-pointers-in-each-node
1171-shortest-path-in-binary-matrix		1171-shortest-path-in-binary-matrix
12-integer-to-roman		12-integer-to-roman
124-binary-tree-maximum-path-sum		124-binary-tree-maximum-path-sum
126-word-ladder-ii		126-word-ladder-ii
127-word-ladder		127-word-ladder
1277-count-square-submatrices-with-all-ones		1277-count-square-submatrices-with-all-ones
128-longest-consecutive-sequence		128-longest-consecutive-sequence
1296-divide-array-in-sets-of-k-consecutive-numbers		1296-divide-array-in-sets-of-k-consecutive-numbers
13-roman-to-integer		13-roman-to-integer
130-surrounded-regions		130-surrounded-regions
131-palindrome-partitioning		131-palindrome-partitioning
1321-get-equal-substrings-within-budget		1321-get-equal-substrings-within-budget
1328-break-a-palindrome		1328-break-a-palindrome
1329-sort-the-matrix-diagonally		1329-sort-the-matrix-diagonally
1338-reduce-array-size-to-the-half		1338-reduce-array-size-to-the-half
1358-number-of-substrings-containing-all-three-characters		1358-number-of-substrings-containing-all-three-characters
136-single-number		136-single-number
1370-count-number-of-nice-subarrays		1370-count-number-of-nice-subarrays
138-copy-list-with-random-pointer		138-copy-list-with-random-pointer
1383-maximum-performance-of-a-team		1383-maximum-performance-of-a-team
14-longest-common-prefix		14-longest-common-prefix
143-reorder-list		143-reorder-list
1448-count-good-nodes-in-binary-tree		1448-count-good-nodes-in-binary-tree
1457-pseudo-palindromic-paths-in-a-binary-tree		1457-pseudo-palindromic-paths-in-a-binary-tree
146-lru-cache		146-lru-cache
1460-number-of-substrings-containing-all-three-characters		1460-number-of-substrings-containing-all-three-characters
147-insertion-sort-list		147-insertion-sort-list
15-3sum		15-3sum
151-reverse-words-in-a-string		151-reverse-words-in-a-string
153-find-minimum-in-rotated-sorted-array		153-find-minimum-in-rotated-sorted-array
155-min-stack		155-min-stack
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
1636-sort-array-by-increasing-frequency		1636-sort-array-by-increasing-frequency
165-compare-version-numbers		165-compare-version-numbers
1680-concatenation-of-consecutive-binary-numbers		1680-concatenation-of-consecutive-binary-numbers
169-majority-element		169-majority-element
17-letter-combinations-of-a-phone-number		17-letter-combinations-of-a-phone-number
1707-maximum-xor-with-an-element-from-array		1707-maximum-xor-with-an-element-from-array
1725-numbers-of-rectangles-that-can-form-the-largest-square		1725-numbers-of-rectangles-that-can-form-the-largest-square
173-binary-search-tree-iterator		173-binary-search-tree-iterator
1741-sort-array-by-increasing-frequency		1741-sort-array-by-increasing-frequency
175-combine-two-tables		175-combine-two-tables
1763-longest-nice-substring		1763-longest-nice-substring
1770-maximum-score-from-performing-multiplication-operations		1770-maximum-score-from-performing-multiplication-operations

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