LeetCode-Practice

Collection of LeetCode questions that I am solving daily! - Created using LeetHub

Checkout Data Structure & Algorithm with Python for curated problems based on topics.

LeetCode Topics

Math

0007-reverse-integer
0368-largest-divisible-subset
1421-find-numbers-with-even-number-of-digits
1529-max-difference-you-can-get-from-changing-an-integer
2160-minimum-operations-to-make-a-uni-value-grid
2415-count-the-number-of-ideal-arrays
2704-maximum-difference-by-remapping-a-digit
3172-divisible-and-non-divisible-sums-difference
3629-total-characters-in-string-after-transformations-i
3630-total-characters-in-string-after-transformations-ii
3637-count-number-of-balanced-permutations
3682-count-the-number-of-arrays-with-k-matching-adjacent-elements
3754-maximum-manhattan-distance-after-k-changes

Array

0073-set-matrix-zeroes
0075-sort-colors
0135-candy
0368-largest-divisible-subset
0416-partition-equal-subset-sum
0945-snakes-and-ladders
1049-minimum-domino-rotations-for-equal-row
1293-three-consecutive-odds
1335-maximum-candies-allocated-to-k-children
1421-find-numbers-with-even-number-of-digits
1424-maximum-candies-you-can-get-from-boxes
1656-count-good-triplets
2144-maximum-difference-between-increasing-elements
2160-minimum-operations-to-make-a-uni-value-grid
2180-maximum-number-of-tasks-you-can-assign
2220-find-all-possible-recipes-from-given-supplies
2237-longest-palindrome-by-concatenating-two-letter-words
2249-count-the-hidden-sequences
2262-solving-questions-with-brainpower
2277-count-equal-and-divisible-pairs-in-an-array
2394-count-subarrays-with-score-less-than-k
2527-count-subarrays-with-fixed-bounds
2626-count-the-number-of-good-subarrays
2720-minimize-the-maximum-difference-of-pairs
2856-count-complete-subarrays-in-an-array
2888-minimum-index-of-a-valid-split
2915-count-of-interesting-subarrays
3142-longest-unequal-adjacent-groups-subsequence-ii
3143-longest-unequal-adjacent-groups-subsequence-i
3152-maximum-value-of-an-ordered-triplet-ii
3171-minimum-equal-sum-of-two-arrays-after-replacing-zeros
3430-count-days-without-meetings
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i
3621-minimum-operations-to-make-array-values-equal-to-k
3627-find-minimum-time-to-reach-last-room-i
3628-find-minimum-time-to-reach-last-room-ii
3639-zero-array-transformation-i
3647-zero-array-transformation-iii
3656-minimum-number-of-operations-to-make-elements-in-array-distinct
3657-check-if-grid-can-be-cut-into-sections
3685-count-subarrays-of-length-three-with-a-condition

Bit Manipulation

3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i

Queue

2180-maximum-number-of-tasks-you-can-assign
2527-count-subarrays-with-fixed-bounds
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i

Sliding Window

2394-count-subarrays-with-score-less-than-k
2527-count-subarrays-with-fixed-bounds
2626-count-the-number-of-good-subarrays
2856-count-complete-subarrays-in-an-array
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i
3761-maximum-difference-between-even-and-odd-frequency-ii

Prefix Sum

2249-count-the-hidden-sequences
2394-count-subarrays-with-score-less-than-k
2915-count-of-interesting-subarrays
3475-minimum-operations-to-make-binary-array-elements-equal-to-one-i
3639-zero-array-transformation-i
3647-zero-array-transformation-iii
3761-maximum-difference-between-even-and-odd-frequency-ii

Hash Table

0073-set-matrix-zeroes
0768-partition-labels
2220-find-all-possible-recipes-from-given-supplies
2237-longest-palindrome-by-concatenating-two-letter-words
2520-using-a-robot-to-print-the-lexicographically-smallest-string
2626-count-the-number-of-good-subarrays
2856-count-complete-subarrays-in-an-array
2888-minimum-index-of-a-valid-split
2915-count-of-interesting-subarrays
3445-lexicographically-minimum-string-after-removing-stars
3621-minimum-operations-to-make-array-values-equal-to-k
3629-total-characters-in-string-after-transformations-i
3630-total-characters-in-string-after-transformations-ii
3656-minimum-number-of-operations-to-make-elements-in-array-distinct
3754-maximum-manhattan-distance-after-k-changes

String

0038-count-and-say
0768-partition-labels
1058-lexicographically-smallest-equivalent-string
2220-find-all-possible-recipes-from-given-supplies
2237-longest-palindrome-by-concatenating-two-letter-words
2260-divide-a-string-into-groups-of-size-k
2520-using-a-robot-to-print-the-lexicographically-smallest-string
3142-longest-unequal-adjacent-groups-subsequence-ii
3143-longest-unequal-adjacent-groups-subsequence-i
3445-lexicographically-minimum-string-after-removing-stars
3629-total-characters-in-string-after-transformations-i
3630-total-characters-in-string-after-transformations-ii
3637-count-number-of-balanced-permutations
3683-find-the-lexicographically-largest-string-from-the-box-i
3754-maximum-manhattan-distance-after-k-changes
3761-maximum-difference-between-even-and-odd-frequency-ii

Graph

1424-maximum-candies-you-can-get-from-boxes
2090-number-of-ways-to-arrive-at-destination
2220-find-all-possible-recipes-from-given-supplies
2438-find-closest-node-to-given-two-nodes
2793-count-the-number-of-complete-components
3627-find-minimum-time-to-reach-last-room-i
3628-find-minimum-time-to-reach-last-room-ii

Topological Sort

2090-number-of-ways-to-arrive-at-destination
2220-find-all-possible-recipes-from-given-supplies

Depth-First Search

0386-lexicographical-numbers
2438-find-closest-node-to-given-two-nodes
2793-count-the-number-of-complete-components
3633-maximize-the-number-of-target-nodes-after-connecting-trees-i
3645-maximize-the-number-of-target-nodes-after-connecting-trees-ii

Breadth-First Search

0945-snakes-and-ladders
1424-maximum-candies-you-can-get-from-boxes
2793-count-the-number-of-complete-components
3633-maximize-the-number-of-target-nodes-after-connecting-trees-i
3645-maximize-the-number-of-target-nodes-after-connecting-trees-ii

Union Find

1058-lexicographically-smallest-equivalent-string
2793-count-the-number-of-complete-components

Dynamic Programming

0368-largest-divisible-subset
0416-partition-equal-subset-sum
2061-painting-a-grid-with-three-different-colors
2090-number-of-ways-to-arrive-at-destination
2262-solving-questions-with-brainpower
2415-count-the-number-of-ideal-arrays
3142-longest-unequal-adjacent-groups-subsequence-ii
3143-longest-unequal-adjacent-groups-subsequence-i
3629-total-characters-in-string-after-transformations-i
3630-total-characters-in-string-after-transformations-ii
3637-count-number-of-balanced-permutations

Shortest Path

2090-number-of-ways-to-arrive-at-destination
3627-find-minimum-time-to-reach-last-room-i
3628-find-minimum-time-to-reach-last-room-ii

Sorting

0075-sort-colors
0368-largest-divisible-subset
2160-minimum-operations-to-make-a-uni-value-grid
2180-maximum-number-of-tasks-you-can-assign
2888-minimum-index-of-a-valid-split
3430-count-days-without-meetings
3647-zero-array-transformation-iii
3657-check-if-grid-can-be-cut-into-sections

Matrix

0073-set-matrix-zeroes
0945-snakes-and-ladders
2160-minimum-operations-to-make-a-uni-value-grid
3627-find-minimum-time-to-reach-last-room-i
3628-find-minimum-time-to-reach-last-room-ii

Two Pointers

0075-sort-colors
0768-partition-labels
3683-find-the-lexicographically-largest-string-from-the-box-i

Greedy

0135-candy
0768-partition-labels
1049-minimum-domino-rotations-for-equal-row
1529-max-difference-you-can-get-from-changing-an-integer
2180-maximum-number-of-tasks-you-can-assign
2237-longest-palindrome-by-concatenating-two-letter-words
2520-using-a-robot-to-print-the-lexicographically-smallest-string
2704-maximum-difference-by-remapping-a-digit
2720-minimize-the-maximum-difference-of-pairs
3143-longest-unequal-adjacent-groups-subsequence-i
3171-minimum-equal-sum-of-two-arrays-after-replacing-zeros
3445-lexicographically-minimum-string-after-removing-stars
3647-zero-array-transformation-iii

Binary Search

1335-maximum-candies-allocated-to-k-children
2180-maximum-number-of-tasks-you-can-assign
2394-count-subarrays-with-score-less-than-k
2720-minimize-the-maximum-difference-of-pairs

Enumeration

1656-count-good-triplets
3683-find-the-lexicographically-largest-string-from-the-box-i
3761-maximum-difference-between-even-and-odd-frequency-ii

Combinatorics

2415-count-the-number-of-ideal-arrays
3637-count-number-of-balanced-permutations
3682-count-the-number-of-arrays-with-k-matching-adjacent-elements

Number Theory

2415-count-the-number-of-ideal-arrays

Monotonic Queue

2180-maximum-number-of-tasks-you-can-assign
2527-count-subarrays-with-fixed-bounds

Heap (Priority Queue)

3445-lexicographically-minimum-string-after-removing-stars
3627-find-minimum-time-to-reach-last-room-i
3628-find-minimum-time-to-reach-last-room-ii
3647-zero-array-transformation-iii

Counting

2237-longest-palindrome-by-concatenating-two-letter-words
3629-total-characters-in-string-after-transformations-i
3630-total-characters-in-string-after-transformations-ii
3754-maximum-manhattan-distance-after-k-changes

Tree

3633-maximize-the-number-of-target-nodes-after-connecting-trees-i
3645-maximize-the-number-of-target-nodes-after-connecting-trees-ii

Stack

2520-using-a-robot-to-print-the-lexicographically-smallest-string
3445-lexicographically-minimum-string-after-removing-stars

Trie

0386-lexicographical-numbers
0440-k-th-smallest-in-lexicographical-order

Simulation

2260-divide-a-string-into-groups-of-size-k