leetcode-problem-solving

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leetcode-problem-solving

My Leetcode Problem Solving Solutions

There are the lists of problems:

• 3sum
• 3sum-closest
• a-number-after-a-double-reversal
• add-binary
• add-digits
• add-two-integers
• addtwonumbers
• all-elements-in-two-binary-search-trees
• alternating-digit-sum
• amount-of-time-for-binary-tree-to-be-infected
• ant-on-the-boundary
• apple-redistribution-into-boxes
• apply-operations-to-an-array
• arithmetic-slices-ii-subsequence
• arithmetic-subarrays
• array-partition
• assign-cookies
• available-captures-for-rook
• average-of-levels-in-binary-tree
• average-salary-excluding-the-minimum-and-maximum-salary
• balance-a-binary-search-tree
• balanced-binary-tree
• baseball-game
• battleships-in-a-board
• best-sightseeing-pair
• best-time-to-buy-and-sell-stock
• binary-gap
• binary-number-with-alternating-bits
• binary-search
• binary-search-tree-iterator
• binary-search-tree-to-greater-sum-tree
• binary-tree-inorder-traversal
• binary-tree-paths
• binary-tree-postorder-traversal
• binary-tree-preorder-traversal
• binary-tree-pruning
• binary-tree-tilt
• bitwise-and-of-numbers-range
• build-an-array-with-stack-operations
• build-array-from-permutation
• buy-two-chocolates
• calculate-amount-paid-in-taxes
• calculate-delayed-arrival-time
• calculate-digit-sum-of-a-string
• calculate-money-in-leetcode-bank
• can-make-arithmetic-progression-from-sequence
• capitalize-the-title
• cells-in-a-range-on-an-excel-sheet
• cells-with-odd-values-in-a-matrix
• check-balanced-string
• check-distances-between-same-letters
• check-if-a-string-contains-all-binary-codes-of-size-k
• check-if-a-string-is-an-acronym-of-words
• check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence
• check-if-all-as-appears-before-all-bs
• check-if-all-characters-have-equal-number-of-occurrences
• check-if-array-is-sorted-and-rotated
• check-if-array-pairs-are-divisible-by-k
• check-if-bitwise-or-has-trailing-zeros
• check-if-every-row-and-column-contains-all-numbers
• check-if-matrix-is-x-matrix
• check-if-n-and-its-double-exist
• check-if-number-has-equal-digit-count-and-digit-value
• check-if-numbers-are-ascending-in-a-sentence
• check-if-one-string-swap-can-make-strings-equal
• check-if-the-sentence-is-pangram
• check-if-two-chessboard-squares-have-the-same-color
• check-if-two-string-arrays-are-equivalent
• check-if-word-equals-summation-of-two-words
• check-whether-two-strings-are-almost-equivalent
• circular-sentence
• clear-digits
• climbing-stairs
• concatenation-of-array
• construct-binary-search-tree-from-preorder-traversal
• construct-k-palindrome-strings
• construct-quad-tree
• construct-smallest-number-from-di-string
• construct-string-from-binary-tree
• construct-the-minimum-bitwise-array-i
• container-with-most-water
• contains-duplicate
• contiguous-array
• continuous-subarray-sum
• convert-1d-array-into-2d-array
• convert-an-array-into-a-2d-array-with-conditions
• convert-binary-number-in-a-linked-list-to-integer
• convert-date-to-binary
• convert-sorted-array-to-binary-search-tree
• convert-sorted-list-to-binary-search-tree
• convert-the-temperature
• count-asterisks
• count-binary-substrings
• count-common-words-with-one-occurrence
• count-complete-tree-nodes
• count-elements-with-maximum-frequency
• count-equal-and-divisible-pairs-in-an-array
• count-good-nodes-in-binary-tree
• count-good-triplets
• count-integers-with-even-digit-sum
• count-items-matching-a-rule
• count-largest-group
• count-negative-numbers-in-a-sorted-matrix
• count-nodes-equal-to-average-of-subtree
• count-number-of-bad-pairs
• count-number-of-distinct-integers-after-reverse-operations
• count-number-of-maximum-bitwise-or-subsets
• count-number-of-nice-subarrays
• count-number-of-pairs-with-absolute-difference-k
• count-of-matches-in-tournament
• count-of-substrings-containing-every-vowel-and-k-consonants-i
• count-operations-to-obtain-zero
• count-pairs-of-similar-strings
• count-pairs-that-form-a-complete-day-i
• count-pairs-whose-sum-is-less-than-target
• count-partitions-with-even-sum-difference
• count-prefix-and-suffix-pairs-i
• count-prefixes-of-a-given-string
• count-servers-that-communicate
• count-sorted-vowel-strings
• count-square-submatrices-with-all-ones
• count-square-sum-triples
• count-sub-islands
• count-substrings-that-satisfy-k-constraint-i
• count-symmetric-integers
• count-tested-devices-after-test-operations
• count-the-digits-that-divide-a-number
• count-the-number-of-consistent-strings
• count-the-number-of-special-characters-i
• count-the-number-of-vowel-strings-in-range
• count-triplets-that-can-form-two-arrays-of-equal-xor
• count-unguarded-cells-in-the-grid
• count-vowel-strings-in-ranges
• count-vowel-substrings-of-a-string
• counting-bits
• counting-words-with-a-given-prefix
• crawler-log-folder
• create-binary-tree-from-descriptions
• create-target-array-in-the-given-order
• custom-sort-string
• daily-temperatures
• decode-the-message
• decode-xored-array
• decompress-run-length-encoded-list
• decrypt-string-from-alphabet-to-integer-mapping
• deepest-leaves-sum
• defanging-an-ip-address
• defuse-the-bomb
• delete-characters-to-make-fancy-string
• delete-columns-to-make-sorted
• delete-greatest-value-in-each-row
• delete-leaves-with-a-given-value
• delete-node-in-a-linked-list
• delete-nodes-and-return-forest
• delete-nodes-from-linked-list-present-in-array
• design-a-stack-with-increment-operation
• design-an-ordered-stream
• design-browser-history
• design-circular-deque
• design-hashmap
• design-hashset
• design-neighbor-sum-service
• design-parking-system
• design-twitter
• design-underground-system
• destination-city
• determine-color-of-a-chessboard-square
• determine-if-string-halves-are-alike
• determine-if-two-strings-are-close
• di-string-match
• diameter-of-binary-tree
• difference-between-element-sum-and-digit-sum-of-an-array
• difference-between-ones-and-zeros-in-row-and-column
• different-ways-to-add-parentheses
• display-table-of-food-orders-in-a-restaurant
• distribute-candies
• distribute-candies-among-children-i
• distribute-candies-to-people
• distribute-coins-in-binary-tree
• distribute-elements-into-two-arrays-i
• divide-a-string-into-groups-of-size-k
• divide-an-array-into-subarrays-with-minimum-cost-i
• divide-array-into-arrays-with-max-difference
• divide-array-into-equal-pairs
• divide-intervals-into-minimum-number-of-groups
• divide-players-into-teams-of-equal-skill
• divisible-and-non-divisible-sums-difference
• divisor-game
• double-a-number-represented-as-a-linked-list
• encode-and-decode-tinyurl
• evaluate-boolean-binary-tree
• evaluate-reverse-polish-notation
• excel-sheet-column-number
• excel-sheet-column-title
• execution-of-all-suffix-instructions-staying-in-a-grid
• existence-of-a-substring-in-a-string-and-its-reverse
• fair-candy-swap
• faulty-keyboard
• fibonacci-number
• final-array-state-after-k-multiplication-operations-i
• final-prices-with-a-special-discount-in-a-shop
• final-value-of-variable-after-performing-operations
• find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
• find-all-anagrams-in-a-string
• find-all-duplicates-in-an-array
• find-all-groups-of-farmland
• find-all-k-distant-indices-in-an-array
• find-and-replace-pattern
• find-bottom-left-tree-value
• find-center-of-star-graph
• find-champion-i
• find-champion-ii
• find-common-characters
• find-common-elements-between-two-arrays
• find-elements-in-a-contaminated-binary-tree
• find-first-and-last-position-of-element-in-sorted-array
• find-first-palindromic-string-in-the-array
• find-greatest-common-divisor-of-array
• find-if-array-can-be-sorted
• find-if-digit-game-can-be-won
• find-indices-of-stable-mountains
• find-kth-bit-in-nth-binary-string
• find-largest-value-in-each-tree-row
• find-lucky-integer-in-an-array
• find-maximum-number-of-string-pairs
• find-minimum-operations-to-make-all-elements-divisible-by-three
• find-missing-and-repeated-values
• find-missing-observations
• find-n-unique-integers-sum-up-to-zero
• find-nearest-point-that-has-the-same-x-or-y-coordinate
• find-numbers-with-even-number-of-digits
• find-occurrences-of-an-element-in-an-array
• find-players-with-zero-or-one-losses
• find-subarrays-with-equal-sum
• find-subsequence-of-length-k-with-the-largest-sum
• find-target-indices-after-sorting-array
• find-the-array-concatenation-value
• find-the-difference-of-two-arrays
• find-the-distance-value-between-two-arrays
• find-the-distinct-difference-array