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496 Commits
0002-add-two-numbers
0002-add-two-numbers
 
 
0009-palindrome-number
0009-palindrome-number
 
 
0017-letter-combinations-of-a-phone-number
0017-letter-combinations-of-a-phone-number
 
 
0020-valid-parentheses
0020-valid-parentheses
 
 
0021-merge-two-sorted-lists
0021-merge-two-sorted-lists
 
 
0025-reverse-nodes-in-k-group
0025-reverse-nodes-in-k-group
 
 
0033-search-in-rotated-sorted-array
0033-search-in-rotated-sorted-array
 
 
0034-find-first-and-last-position-of-element-in-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
 
 
0035-search-insert-position
0035-search-insert-position
 
 
0039-combination-sum
0039-combination-sum
 
 
0040-combination-sum-ii
0040-combination-sum-ii
 
 
0054-spiral-matrix
0054-spiral-matrix
 
 
0069-sqrtx
0069-sqrtx
 
 
0074-search-a-2d-matrix
0074-search-a-2d-matrix
 
 
0078-subsets
0078-subsets
 
 
0083-remove-duplicates-from-sorted-list
0083-remove-duplicates-from-sorted-list
 
 
0084-largest-rectangle-in-histogram
0084-largest-rectangle-in-histogram
 
 
0088-merge-sorted-array
0088-merge-sorted-array
 
 
0100-same-tree
0100-same-tree
 
 
0101-symmetric-tree
0101-symmetric-tree
 
 
0103-binary-tree-zigzag-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
 
 
0104-maximum-depth-of-binary-tree
0104-maximum-depth-of-binary-tree
 
 
0110-balanced-binary-tree
0110-balanced-binary-tree
 
 
0111-minimum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
 
 
0125-valid-palindrome
0125-valid-palindrome
 
 
0141-linked-list-cycle
0141-linked-list-cycle
 
 
0142-linked-list-cycle-ii
0142-linked-list-cycle-ii
 
 
0148-sort-list
0148-sort-list
 
 
0189-rotate-array
0189-rotate-array
 
 
0199-binary-tree-right-side-view
0199-binary-tree-right-side-view
 
 
0203-remove-linked-list-elements
0203-remove-linked-list-elements
 
 
0204-count-primes
0204-count-primes
 
 
0206-reverse-linked-list
0206-reverse-linked-list
 
 
0215-kth-largest-element-in-an-array
0215-kth-largest-element-in-an-array
 
 
0225-implement-stack-using-queues
0225-implement-stack-using-queues
 
 
0232-implement-queue-using-stacks
0232-implement-queue-using-stacks
 
 
0234-palindrome-linked-list
0234-palindrome-linked-list
 
 
0240-search-a-2d-matrix-ii
0240-search-a-2d-matrix-ii
 
 
0268-missing-number
0268-missing-number
 
 
0283-move-zeroes
0283-move-zeroes
 
 
0344-reverse-string
0344-reverse-string
 
 
0367-valid-perfect-square
0367-valid-perfect-square
 
 
0387-first-unique-character-in-a-string
0387-first-unique-character-in-a-string
 
 
0443-string-compression
0443-string-compression
 
 
0540-single-element-in-a-sorted-array
0540-single-element-in-a-sorted-array
 
 
0543-diameter-of-binary-tree
0543-diameter-of-binary-tree
 
 
0567-permutation-in-string
0567-permutation-in-string
 
 
0852-peak-index-in-a-mountain-array
0852-peak-index-in-a-mountain-array
 
 
0882-peak-index-in-a-mountain-array
0882-peak-index-in-a-mountain-array
 
 
0908-middle-of-the-linked-list
0908-middle-of-the-linked-list
 
 
0948-sort-an-array
0948-sort-an-array
 
 
1013-fibonacci-number
1013-fibonacci-number
 
 
1029-vertical-order-traversal-of-a-binary-tree
1029-vertical-order-traversal-of-a-binary-tree
 
 
1476-count-negative-numbers-in-a-sorted-matrix
1476-count-negative-numbers-in-a-sorted-matrix
 
 
1878-check-if-array-is-sorted-and-rotated
1878-check-if-array-is-sorted-and-rotated
 
 
2021-remove-all-occurrences-of-a-substring
2021-remove-all-occurrences-of-a-substring
 
 
3379-score-of-a-string
3379-score-of-a-string
 
 
3731-sum-of-variable-length-subarrays
3731-sum-of-variable-length-subarrays
 
 
3748-sort-matrix-by-diagonals
3748-sort-matrix-by-diagonals
 
 
3753-maximum-difference-between-even-and-odd-frequency-i
3753-maximum-difference-between-even-and-odd-frequency-i
 
 
3766-maximum-median-sum-of-subsequences-of-size-3
3766-maximum-median-sum-of-subsequences-of-size-3
 
 
3817-maximum-containers-on-a-ship
3817-maximum-containers-on-a-ship
 
 
3832-minimum-cost-to-reach-every-position
3832-minimum-cost-to-reach-every-position
 
 
3859-maximum-product-of-two-digits
3859-maximum-product-of-two-digits
 
 
3871-minimum-deletions-for-at-most-k-distinct-characters
3871-minimum-deletions-for-at-most-k-distinct-characters
 
 
3995-gcd-of-odd-and-even-sums
3995-gcd-of-odd-and-even-sums
 
 
Bottom-view-of-binary-tree-GFG
Bottom-view-of-binary-tree-GFG
 
 
LCA-in-binary-tree-GFG
LCA-in-binary-tree-GFG
 
 
Subsequences-of-string-CodeStudio
Subsequences-of-string-CodeStudio
 
 
Top-View-of-Binary-Tree-GFG
Top-View-of-Binary-Tree-GFG
 
 
Tree-Boundary-Traversal-GFG
Tree-Boundary-Traversal-GFG
 
 
Vertical-Order-Traversal-CodeStudio
Vertical-Order-Traversal-CodeStudio
 
 
aggressive-cows-CodeStudio
aggressive-cows-CodeStudio
 
 
bubble-sort
bubble-sort
 
 
build-min-heap-CodeStudio
build-min-heap-CodeStudio
 
 
check-if-circularly-linked-list-GFG
check-if-circularly-linked-list-GFG
 
 
circular-queue-CodeStudio
circular-queue-CodeStudio
 
 
circular-tour-GFG
circular-tour-GFG
 
 
climbing-stairs-Leetcode
climbing-stairs-Leetcode
 
 
clone-list-with-next-and-random-pointer
clone-list-with-next-and-random-pointer
 
 
count-leaf-nodes-CodeStudio
count-leaf-nodes-CodeStudio
 
 
count-the-reversals-GFG
count-the-reversals-GFG
 
 
delete-mid-of-a-stack-GFG
delete-mid-of-a-stack-GFG
 
 
design-a-stack-that-supports-getMin()-in-O(1)-time-and-O(1)-extra-space-CodeStudio
design-a-stack-that-supports-getMin()-in-O(1)-time-and-O(1)-extra-space-CodeStudio
 
 
expression-contains-redundant-bracket-or-not-GFG
expression-contains-redundant-bracket-or-not-GFG
 
 
first-negative-in-every-window-of-size-k-GFG
first-negative-in-every-window-of-size-k-GFG
 
 
first-non-repeating-character-in-a-stream-GFG
first-non-repeating-character-in-a-stream-GFG
 
 
flattening-a-linked-list-GFG
flattening-a-linked-list-GFG
 
 
help-classmates-GFG
help-classmates-GFG
 
 
implement-a-queue-CodeStudio
implement-a-queue-CodeStudio
 
 
implement-deque-CodeStudio
implement-deque-CodeStudio
 
 
insert-an-element-at-the-bottom-of-a-stack-GFG
insert-an-element-at-the-bottom-of-a-stack-GFG
 
 
interleave-the-first-half-of-the-queue-with-second-half-GFG
interleave-the-first-half-of-the-queue-with-second-half-GFG
 
 
k-sum-paths-GFG
k-sum-paths-GFG
 
 
kth-element-in-matrix-GFG
kth-element-in-matrix-GFG
 
 
left-view-of-binary-tree
left-view-of-binary-tree
 
 
max-rectangle-GFG
max-rectangle-GFG
 
 
max-rectangle-in-a-binary-matrix-GFG
max-rectangle-in-a-binary-matrix-GFG
 
 
maximum-occurring-character-GFG
maximum-occurring-character-GFG
 
 
median-in-a-row-wise-sorted-matrix-GFG
median-in-a-row-wise-sorted-matrix-GFG
 
 

Repository files navigation

Leetcode-Problems

LeetCode Topics

Array
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0039-combination-sum
0040-combination-sum-ii
0054-spiral-matrix
0074-search-a-2d-matrix
0078-subsets
0084-largest-rectangle-in-histogram
0088-merge-sorted-array
0189-rotate-array
0204-count-primes
0215-kth-largest-element-in-an-array
0240-search-a-2d-matrix-ii
0268-missing-number
0283-move-zeroes
0540-single-element-in-a-sorted-array
0882-peak-index-in-a-mountain-array
1476-count-negative-numbers-in-a-sorted-matrix
1878-check-if-array-is-sorted-and-rotated

Binary Search
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0069-sqrtx
0074-search-a-2d-matrix
0240-search-a-2d-matrix-ii
0268-missing-number
0367-valid-perfect-square
0540-single-element-in-a-sorted-array
0882-peak-index-in-a-mountain-array
1476-count-negative-numbers-in-a-sorted-matrix

Two Pointers
0088-merge-sorted-array
0125-valid-palindrome
0142-linked-list-cycle-ii
0148-sort-list
0189-rotate-array
0283-move-zeroes
0344-reverse-string
0443-string-compression
0567-permutation-in-string
0908-middle-of-the-linked-list

Sorting
0088-merge-sorted-array
0148-sort-list
0215-kth-largest-element-in-an-array
0268-missing-number
1029-vertical-order-traversal-of-a-binary-tree

Math
0009-palindrome-number
0069-sqrtx
0189-rotate-array
0204-count-primes
0268-missing-number
0367-valid-perfect-square
1013-fibonacci-number

String
0017-letter-combinations-of-a-phone-number
0020-valid-parentheses
0125-valid-palindrome
0344-reverse-string
0387-first-unique-character-in-a-string
0443-string-compression
0567-permutation-in-string
2021-remove-all-occurrences-of-a-substring
3379-score-of-a-string

Stack
0020-valid-parentheses
0084-largest-rectangle-in-histogram
0225-implement-stack-using-queues
0232-implement-queue-using-stacks
2021-remove-all-occurrences-of-a-substring

Simulation
0054-spiral-matrix
2021-remove-all-occurrences-of-a-substring

Hash Table
0017-letter-combinations-of-a-phone-number
0142-linked-list-cycle-ii
0268-missing-number
0387-first-unique-character-in-a-string
0567-permutation-in-string
1029-vertical-order-traversal-of-a-binary-tree

Sliding Window
0567-permutation-in-string

Matrix
0054-spiral-matrix
0074-search-a-2d-matrix
0240-search-a-2d-matrix-ii
1476-count-negative-numbers-in-a-sorted-matrix

Divide and Conquer
0148-sort-list
0215-kth-largest-element-in-an-array
0240-search-a-2d-matrix-ii

Enumeration
0204-count-primes

Number Theory
0204-count-primes

Bit Manipulation
0078-subsets
0268-missing-number

Dynamic Programming
1013-fibonacci-number

Recursion
0025-reverse-nodes-in-k-group
0203-remove-linked-list-elements
0206-reverse-linked-list
1013-fibonacci-number

Memoization
1013-fibonacci-number

Backtracking
0017-letter-combinations-of-a-phone-number
0039-combination-sum
0040-combination-sum-ii
0078-subsets

Linked List
0025-reverse-nodes-in-k-group
0083-remove-duplicates-from-sorted-list
0142-linked-list-cycle-ii
0148-sort-list
0203-remove-linked-list-elements
0206-reverse-linked-list
0908-middle-of-the-linked-list

Merge Sort
0148-sort-list

Monotonic Stack
0084-largest-rectangle-in-histogram

Design
0225-implement-stack-using-queues
0232-implement-queue-using-stacks

Queue
0225-implement-stack-using-queues
0232-implement-queue-using-stacks
0387-first-unique-character-in-a-string

Counting
0387-first-unique-character-in-a-string

Tree
0100-same-tree
0101-symmetric-tree
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0111-minimum-depth-of-binary-tree
0199-binary-tree-right-side-view
0543-diameter-of-binary-tree
1029-vertical-order-traversal-of-a-binary-tree

Depth-First Search
0100-same-tree
0101-symmetric-tree
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0111-minimum-depth-of-binary-tree
0199-binary-tree-right-side-view
0543-diameter-of-binary-tree
1029-vertical-order-traversal-of-a-binary-tree

Breadth-First Search
0100-same-tree
0101-symmetric-tree
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
0199-binary-tree-right-side-view
1029-vertical-order-traversal-of-a-binary-tree

Binary Tree
0100-same-tree
0101-symmetric-tree
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0111-minimum-depth-of-binary-tree
0199-binary-tree-right-side-view
0543-diameter-of-binary-tree
1029-vertical-order-traversal-of-a-binary-tree

Heap (Priority Queue)
0215-kth-largest-element-in-an-array

Quickselect
0215-kth-largest-element-in-an-array

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