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.vscode
.vscode
 
 
0028-find-the-index-of-the-first-occurrence-in-a-string
0028-find-the-index-of-the-first-occurrence-in-a-string
 
 
0029-divide-two-integers
0029-divide-two-integers
 
 
0049-group-anagrams
0049-group-anagrams
 
 
0069-sqrtx
0069-sqrtx
 
 
0083-remove-duplicates-from-sorted-list
0083-remove-duplicates-from-sorted-list
 
 
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
 
 
0169-majority-element
0169-majority-element
 
 
0215-kth-largest-element-in-an-array
0215-kth-largest-element-in-an-array
 
 
0217-contains-duplicate
0217-contains-duplicate
 
 
0231-power-of-two
0231-power-of-two
 
 
0238-product-of-array-except-self
0238-product-of-array-except-self
 
 
0242-valid-anagram
0242-valid-anagram
 
 
0258-add-digits
0258-add-digits
 
 
0263-ugly-number
0263-ugly-number
 
 
0290-word-pattern
0290-word-pattern
 
 
0342-power-of-four
0342-power-of-four
 
 
0345-reverse-vowels-of-a-string
0345-reverse-vowels-of-a-string
 
 
0347-top-k-frequent-elements
0347-top-k-frequent-elements
 
 
0367-valid-perfect-square
0367-valid-perfect-square
 
 
0383-ransom-note
0383-ransom-note
 
 
0387-first-unique-character-in-a-string
0387-first-unique-character-in-a-string
 
 
0389-find-the-difference
0389-find-the-difference
 
 
0451-sort-characters-by-frequency
0451-sort-characters-by-frequency
 
 
0500-keyboard-row
0500-keyboard-row
 
 
0507-perfect-number
0507-perfect-number
 
 
0541-reverse-string-ii
0541-reverse-string-ii
 
 
0605-can-place-flowers
0605-can-place-flowers
 
 
0695-max-area-of-island
0695-max-area-of-island
 
 
0742-to-lower-case
0742-to-lower-case
 
 
0890-lemonade-change
0890-lemonade-change
 
 
0953-reverse-only-letters
0953-reverse-only-letters
 
 
0965-unique-email-addresses
0965-unique-email-addresses
 
 
1-two-sum
1-two-sum
 
 
100-same-tree
100-same-tree
 
 
1013-fibonacci-number
1013-fibonacci-number
 
 
102-binary-tree-level-order-traversal
102-binary-tree-level-order-traversal
 
 
1031-add-to-array-form-of-integer
1031-add-to-array-form-of-integer
 
 
1044-find-common-characters
1044-find-common-characters
 
 
1050-actors-and-directors-who-cooperated-at-least-three-times
1050-actors-and-directors-who-cooperated-at-least-three-times
 
 
1071-greatest-common-divisor-of-strings
1071-greatest-common-divisor-of-strings
 
 
1084-sales-analysis-iii
1084-sales-analysis-iii
 
 
1089-duplicate-zeros
1089-duplicate-zeros
 
 
1141-user-activity-for-the-past-30-days-i
1141-user-activity-for-the-past-30-days-i
 
 
1148-article-views-i
1148-article-views-i
 
 
1158-market-analysis-i
1158-market-analysis-i
 
 
1205-defanging-an-ip-address
1205-defanging-an-ip-address
 
 
121-best-time-to-buy-and-sell-stock
121-best-time-to-buy-and-sell-stock
 
 
1217-relative-sort-array
1217-relative-sort-array
 
 
1281-subtract-the-product-and-sum-of-digits-of-an-integer
1281-subtract-the-product-and-sum-of-digits-of-an-integer
 
 
13-roman-to-integer
13-roman-to-integer
 
 
1346-check-if-n-and-its-double-exist
1346-check-if-n-and-its-double-exist
 
 
1393-capital-gain-loss
1393-capital-gain-loss
 
 
1407-top-travellers
1407-top-travellers
 
 
142-linked-list-cycle-ii
142-linked-list-cycle-ii
 
 
1431-kids-with-the-greatest-number-of-candies
1431-kids-with-the-greatest-number-of-candies
 
 
1480-running-sum-of-1d-array
1480-running-sum-of-1d-array
 
 
1482-how-many-numbers-are-smaller-than-the-current-number
1482-how-many-numbers-are-smaller-than-the-current-number
 
 
1484-group-sold-products-by-the-date
1484-group-sold-products-by-the-date
 
 
1491-average-salary-excluding-the-minimum-and-maximum-salary
1491-average-salary-excluding-the-minimum-and-maximum-salary
 
 
14_days_ds
14_days_ds
 
 
1502-can-make-arithmetic-progression-from-sequence
1502-can-make-arithmetic-progression-from-sequence
 
 
1523-count-odd-numbers-in-an-interval-range
1523-count-odd-numbers-in-an-interval-range
 
 
1524-string-matching-in-an-array
1524-string-matching-in-an-array
 
 
1527-patients-with-a-condition
1527-patients-with-a-condition
 
 
1537-maximum-score-after-splitting-a-string
1537-maximum-score-after-splitting-a-string
 
 
1572-matrix-diagonal-sum
1572-matrix-diagonal-sum
 
 
1581-customer-who-visited-but-did-not-make-any-transactions
1581-customer-who-visited-but-did-not-make-any-transactions
 
 
1587-bank-account-summary-ii
1587-bank-account-summary-ii
 
 
1636-sort-array-by-increasing-frequency
1636-sort-array-by-increasing-frequency
 
 
1667-fix-names-in-a-table
1667-fix-names-in-a-table
 
 
1693-daily-leads-and-partners
1693-daily-leads-and-partners
 
 
17-letter-combinations-of-a-phone-number
17-letter-combinations-of-a-phone-number
 
 
1721-swapping-nodes-in-a-linked-list
1721-swapping-nodes-in-a-linked-list
 
 
1729-find-followers-count
1729-find-followers-count
 
 
1741-find-total-time-spent-by-each-employee
1741-find-total-time-spent-by-each-employee
 
 
1757-recyclable-and-low-fat-products
1757-recyclable-and-low-fat-products
 
 
176-second-highest-salary
176-second-highest-salary
 
 
1768-merge-strings-alternately
1768-merge-strings-alternately
 
 
1795-rearrange-products-table
1795-rearrange-products-table
 
 
182-duplicate-emails
182-duplicate-emails
 
 
1822-sign-of-the-product-of-an-array
1822-sign-of-the-product-of-an-array
 
 
183-customers-who-never-order
183-customers-who-never-order
 
 
1873-calculate-special-bonus
1873-calculate-special-bonus
 
 
1890-the-latest-login-in-2020
1890-the-latest-login-in-2020
 
 
191-number-of-1-bits
191-number-of-1-bits
 
 
196-delete-duplicate-emails
196-delete-duplicate-emails
 
 
1965-employees-with-missing-information
1965-employees-with-missing-information
 
 
197-rising-temperature
197-rising-temperature
 
 
1991-find-the-middle-index-in-array
1991-find-the-middle-index-in-array
 
 
20-valid-parentheses
20-valid-parentheses
 
 
205-isomorphic-strings
205-isomorphic-strings
 
 
2059-unique-length-3-palindromic-subsequences
2059-unique-length-3-palindromic-subsequences
 
 
206-reverse-linked-list
206-reverse-linked-list
 
 
21-merge-two-sorted-lists
21-merge-two-sorted-lists
 
 
217-contains-duplicate
217-contains-duplicate
 
 
2231-find-first-palindromic-string-in-the-array
2231-find-first-palindromic-string-in-the-array
 
 
2292-counting-words-with-a-given-prefix
2292-counting-words-with-a-given-prefix
 
 

Repository files navigation

LeetCode

  • Leetcode solution

LeetCode Topics

String
0290-word-pattern
0500-keyboard-row
0541-reverse-string-ii
0742-to-lower-case
0953-reverse-only-letters
0965-unique-email-addresses
1044-find-common-characters
1205-defanging-an-ip-address
1524-string-matching-in-an-array
1537-maximum-score-after-splitting-a-string
2059-unique-length-3-palindromic-subsequences
2231-find-first-palindromic-string-in-the-array
2292-counting-words-with-a-given-prefix
2465-shifting-letters-ii
2691-count-vowel-strings-in-ranges
3309-count-prefix-and-suffix-pairs-i

Prefix Sum
1537-maximum-score-after-splitting-a-string
2059-unique-length-3-palindromic-subsequences
2358-number-of-ways-to-split-array
2465-shifting-letters-ii
2691-count-vowel-strings-in-ranges

Array
0137-single-number-ii
0500-keyboard-row
0890-lemonade-change
0965-unique-email-addresses
1031-add-to-array-form-of-integer
1044-find-common-characters
1217-relative-sort-array
1482-how-many-numbers-are-smaller-than-the-current-number
1524-string-matching-in-an-array
2231-find-first-palindromic-string-in-the-array
2292-counting-words-with-a-given-prefix
2358-number-of-ways-to-split-array
2465-shifting-letters-ii
2691-count-vowel-strings-in-ranges
3309-count-prefix-and-suffix-pairs-i

Hash Table
0290-word-pattern
0500-keyboard-row
0965-unique-email-addresses
1044-find-common-characters
1217-relative-sort-array
1482-how-many-numbers-are-smaller-than-the-current-number
2059-unique-length-3-palindromic-subsequences

Bit Manipulation
0137-single-number-ii
2059-unique-length-3-palindromic-subsequences

Greedy
0890-lemonade-change

Two Pointers
0541-reverse-string-ii
0953-reverse-only-letters
2231-find-first-palindromic-string-in-the-array

String Matching
1524-string-matching-in-an-array
2292-counting-words-with-a-given-prefix
3309-count-prefix-and-suffix-pairs-i

Trie
3309-count-prefix-and-suffix-pairs-i

Rolling Hash
3309-count-prefix-and-suffix-pairs-i

Hash Function
3309-count-prefix-and-suffix-pairs-i

Sorting
1217-relative-sort-array
1482-how-many-numbers-are-smaller-than-the-current-number

Counting
1482-how-many-numbers-are-smaller-than-the-current-number

Math
0367-valid-perfect-square
1013-fibonacci-number
1031-add-to-array-form-of-integer

Dynamic Programming
1013-fibonacci-number

Recursion
1013-fibonacci-number

Memoization
1013-fibonacci-number

Counting Sort
1217-relative-sort-array

Binary Search
0367-valid-perfect-square

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