My solutions for some leetcode Problems

LeetCode Topics

Array

0011-container-with-most-water
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
0780-max-chunks-to-make-sorted
0952-word-subsets
1046-max-consecutive-ones-iii
1319-unique-number-of-occurrences
1392-find-the-difference-of-two-arrays
1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid
1514-minimum-value-to-get-positive-step-by-step-sum
1524-string-matching-in-an-array
1528-kids-with-the-greatest-number-of-candies
1570-final-prices-with-a-special-discount-in-a-shop
1586-longest-subarray-of-1s-after-deleting-one-element
1603-running-sum-of-1d-array
1833-find-the-highest-altitude
2145-grid-game
2265-partition-array-according-to-given-pivot
2292-counting-words-with-a-given-prefix
2358-number-of-ways-to-split-array
2518-the-employee-that-worked-on-the-longest-task
2533-bitwise-xor-of-all-pairings
2551-apply-operations-to-an-array
2614-maximum-count-of-positive-integer-and-negative-integer
2685-first-completely-painted-row-or-column
2691-count-vowel-strings-in-ranges
2707-merge-two-2d-arrays-by-summing-values
2727-number-of-senior-citizens
2766-find-the-prefix-common-array-of-two-arrays
2792-neighboring-bitwise-xor
3093-sum-of-values-at-indices-with-k-set-bits
3227-find-missing-and-repeated-values
3309-count-prefix-and-suffix-pairs-i
3429-special-array-i
3555-final-array-state-after-k-multiplication-operations-i

Bit Manipulation

0338-counting-bits
0389-find-the-difference
2059-unique-length-3-palindromic-subsequences
2509-minimize-xor
2533-bitwise-xor-of-all-pairings
2766-find-the-prefix-common-array-of-two-arrays
2792-neighboring-bitwise-xor
3093-sum-of-values-at-indices-with-k-set-bits

Brainteaser

2533-bitwise-xor-of-all-pairings

Dynamic Programming

0338-counting-bits
0392-is-subsequence
1013-fibonacci-number
1586-longest-subarray-of-1s-after-deleting-one-element

Greedy

0011-container-with-most-water
0334-increasing-triplet-subsequence
0605-can-place-flowers
0780-max-chunks-to-make-sorted
1502-construct-k-palindrome-strings
2221-check-if-a-parentheses-string-can-be-valid
2509-minimize-xor

Hash Table

0389-find-the-difference
0952-word-subsets
1319-unique-number-of-occurrences
1392-find-the-difference-of-two-arrays
1502-construct-k-palindrome-strings
1777-determine-if-two-strings-are-close
1904-second-largest-digit-in-a-string
2059-unique-length-3-palindromic-subsequences
2677-cousins-in-binary-tree-ii
2685-first-completely-painted-row-or-column
2707-merge-two-2d-arrays-by-summing-values
2766-find-the-prefix-common-array-of-two-arrays
3227-find-missing-and-repeated-values
3455-minimum-length-of-string-after-operations

String

0151-reverse-words-in-a-string
0344-reverse-string
0345-reverse-vowels-of-a-string
0389-find-the-difference
0392-is-subsequence
0443-string-compression
0952-word-subsets
1146-greatest-common-divisor-of-strings
1502-construct-k-palindrome-strings
1524-string-matching-in-an-array
1537-maximum-score-after-splitting-a-string
1567-maximum-number-of-vowels-in-a-substring-of-given-length
1666-make-the-string-great
1777-determine-if-two-strings-are-close
1894-merge-strings-alternately
1904-second-largest-digit-in-a-string
2059-unique-length-3-palindromic-subsequences
2221-check-if-a-parentheses-string-can-be-valid
2292-counting-words-with-a-given-prefix
2463-minimum-recolors-to-get-k-consecutive-black-blocks
2470-removing-stars-from-a-string
2691-count-vowel-strings-in-ranges
2727-number-of-senior-citizens
3309-count-prefix-and-suffix-pairs-i
3455-minimum-length-of-string-after-operations

Counting

1502-construct-k-palindrome-strings
1777-determine-if-two-strings-are-close
2614-maximum-count-of-positive-integer-and-negative-integer
3455-minimum-length-of-string-after-operations

Stack

0780-max-chunks-to-make-sorted
1570-final-prices-with-a-special-discount-in-a-shop
1666-make-the-string-great
2221-check-if-a-parentheses-string-can-be-valid
2470-removing-stars-from-a-string

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

Prefix Sum

0238-product-of-array-except-self
0724-find-pivot-index
1046-max-consecutive-ones-iii
1514-minimum-value-to-get-positive-step-by-step-sum
1537-maximum-score-after-splitting-a-string
1603-running-sum-of-1d-array
1833-find-the-highest-altitude
2059-unique-length-3-palindromic-subsequences
2145-grid-game
2358-number-of-ways-to-split-array
2691-count-vowel-strings-in-ranges

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
2463-minimum-recolors-to-get-k-consecutive-black-blocks

Binary Search

1046-max-consecutive-ones-iii
2614-maximum-count-of-positive-integer-and-negative-integer

Two Pointers

0011-container-with-most-water
0151-reverse-words-in-a-string
0283-move-zeroes
0344-reverse-string
0345-reverse-vowels-of-a-string
0392-is-subsequence
0443-string-compression
1894-merge-strings-alternately
2265-partition-array-according-to-given-pivot
2551-apply-operations-to-an-array
2707-merge-two-2d-arrays-by-summing-values

Math

1013-fibonacci-number
1146-greatest-common-divisor-of-strings
1630-count-odd-numbers-in-an-interval-range
1889-check-if-number-is-a-sum-of-powers-of-three
2610-closest-prime-numbers-in-range
2649-count-total-number-of-colored-cells
2955-account-balance-after-rounded-purchase
3172-divisible-and-non-divisible-sums-difference
3227-find-missing-and-repeated-values
3555-final-array-state-after-k-multiplication-operations-i
3568-find-the-key-of-the-numbers

Tree

0515-find-largest-value-in-each-tree-row
2493-reverse-odd-levels-of-binary-tree
2558-minimum-number-of-operations-to-sort-a-binary-tree-by-level
2677-cousins-in-binary-tree-ii

Depth-First Search

0515-find-largest-value-in-each-tree-row
2493-reverse-odd-levels-of-binary-tree
2677-cousins-in-binary-tree-ii

Breadth-First Search

0515-find-largest-value-in-each-tree-row
1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid
2493-reverse-odd-levels-of-binary-tree
2558-minimum-number-of-operations-to-sort-a-binary-tree-by-level
2677-cousins-in-binary-tree-ii

Binary Tree

0515-find-largest-value-in-each-tree-row
2493-reverse-odd-levels-of-binary-tree
2558-minimum-number-of-operations-to-sort-a-binary-tree-by-level
2677-cousins-in-binary-tree-ii

Sorting

0389-find-the-difference
0780-max-chunks-to-make-sorted
1777-determine-if-two-strings-are-close

Monotonic Stack

0780-max-chunks-to-make-sorted
1570-final-prices-with-a-special-discount-in-a-shop

Heap (Priority Queue)

1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid
3555-final-array-state-after-k-multiplication-operations-i

Simulation

2265-partition-array-according-to-given-pivot
2470-removing-stars-from-a-string
2551-apply-operations-to-an-array
3555-final-array-state-after-k-multiplication-operations-i

Graph

1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid
3189-find-champion-ii

Recursion

1013-fibonacci-number

Memoization

1013-fibonacci-number

Matrix

1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid
2145-grid-game
2685-first-completely-painted-row-or-column
3227-find-missing-and-repeated-values

Shortest Path

1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid

Number Theory

2610-closest-prime-numbers-in-range