Data-Structures-and-Algorithms

Dedicated repo for all my algorithmic problems I tackle, serving as a comprehensive resource for my journey in mastering data structures and algorithms

LeetCode Topics

Array

0001-two-sum
0004-median-of-two-sorted-arrays
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
0051-n-queens
0074-search-a-2d-matrix
0078-subsets
0079-word-search
0081-search-in-rotated-sorted-array-ii
0088-merge-sorted-array
0090-subsets-ii
0136-single-number
0139-word-break
0152-maximum-product-subarray
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0216-combination-sum-iii
0240-search-a-2d-matrix-ii
0410-split-array-largest-sum
0493-reverse-pairs
0540-single-element-in-a-sorted-array
0792-binary-search
0907-koko-eating-bananas
1056-capacity-to-ship-packages-within-d-days
1408-find-the-smallest-divisor-given-a-threshold
1605-minimum-number-of-days-to-make-m-bouquets
1621-number-of-subsequences-that-satisfy-the-given-sum-condition
1646-kth-missing-positive-number
2047-find-a-peak-element-ii
3227-find-missing-and-repeated-values

Hash Table

0001-two-sum
0013-roman-to-integer
0017-letter-combinations-of-a-phone-number
0138-copy-list-with-random-pointer
0139-word-break
0141-linked-list-cycle
0142-linked-list-cycle-ii
0160-intersection-of-two-linked-lists
0205-isomorphic-strings
0242-valid-anagram
0451-sort-characters-by-frequency
1890-sum-of-beauty-of-all-substrings
3227-find-missing-and-repeated-values

Math

0002-add-two-numbers
0013-roman-to-integer
0029-divide-two-integers
0231-power-of-two
0282-expression-add-operators
0795-k-th-symbol-in-grammar
1013-fibonacci-number
2032-largest-odd-number-in-string
2050-count-good-numbers
3227-find-missing-and-repeated-values

Matrix

0074-search-a-2d-matrix
0079-word-search
0240-search-a-2d-matrix-ii
2047-find-a-peak-element-ii
3227-find-missing-and-repeated-values

Two Pointers

0005-longest-palindromic-substring
0019-remove-nth-node-from-end-of-list
0061-rotate-list
0088-merge-sorted-array
0141-linked-list-cycle
0142-linked-list-cycle-ii
0148-sort-list
0151-reverse-words-in-a-string
0160-intersection-of-two-linked-lists
0234-palindrome-linked-list
0344-reverse-string
0908-middle-of-the-linked-list
1621-number-of-subsequences-that-satisfy-the-given-sum-condition
2216-delete-the-middle-node-of-a-linked-list

Sorting

0088-merge-sorted-array
0148-sort-list
0242-valid-anagram
0451-sort-characters-by-frequency
1621-number-of-subsequences-that-satisfy-the-given-sum-condition

Binary Search

0004-median-of-two-sorted-arrays
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0074-search-a-2d-matrix
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0240-search-a-2d-matrix-ii
0410-split-array-largest-sum
0493-reverse-pairs
0540-single-element-in-a-sorted-array
0792-binary-search
0907-koko-eating-bananas
1056-capacity-to-ship-packages-within-d-days
1408-find-the-smallest-divisor-given-a-threshold
1605-minimum-number-of-days-to-make-m-bouquets
1621-number-of-subsequences-that-satisfy-the-given-sum-condition
1646-kth-missing-positive-number
2047-find-a-peak-element-ii

Divide and Conquer

0004-median-of-two-sorted-arrays
0148-sort-list
0240-search-a-2d-matrix-ii
0493-reverse-pairs

Binary Indexed Tree

0493-reverse-pairs

Segment Tree

0493-reverse-pairs

Merge Sort

0148-sort-list
0493-reverse-pairs

Ordered Set

0493-reverse-pairs

Dynamic Programming

0005-longest-palindromic-substring
0022-generate-parentheses
0131-palindrome-partitioning
0139-word-break
0152-maximum-product-subarray
0338-counting-bits
0410-split-array-largest-sum
1013-fibonacci-number

Greedy

0410-split-array-largest-sum
2032-largest-odd-number-in-string

Prefix Sum

0410-split-array-largest-sum

String

0005-longest-palindromic-substring
0008-string-to-integer-atoi
0013-roman-to-integer
0014-longest-common-prefix
0017-letter-combinations-of-a-phone-number
0022-generate-parentheses
0079-word-search
0131-palindrome-partitioning
0139-word-break
0151-reverse-words-in-a-string
0205-isomorphic-strings
0242-valid-anagram
0282-expression-add-operators
0344-reverse-string
0451-sort-characters-by-frequency
0812-rotate-string
1078-remove-outermost-parentheses
1737-maximum-nesting-depth-of-the-parentheses
1890-sum-of-beauty-of-all-substrings
2032-largest-odd-number-in-string

Stack

0234-palindrome-linked-list
1078-remove-outermost-parentheses
1737-maximum-nesting-depth-of-the-parentheses

Trie

0014-longest-common-prefix
0139-word-break

String Matching

0812-rotate-string

Heap (Priority Queue)

0451-sort-characters-by-frequency

Bucket Sort

0451-sort-characters-by-frequency

Counting

0451-sort-characters-by-frequency
1890-sum-of-beauty-of-all-substrings

Linked List

0002-add-two-numbers
0019-remove-nth-node-from-end-of-list
0025-reverse-nodes-in-k-group
0061-rotate-list
0138-copy-list-with-random-pointer
0141-linked-list-cycle
0142-linked-list-cycle-ii
0148-sort-list
0160-intersection-of-two-linked-lists
0206-reverse-linked-list
0234-palindrome-linked-list
0237-delete-node-in-a-linked-list
0328-odd-even-linked-list
0908-middle-of-the-linked-list
2216-delete-the-middle-node-of-a-linked-list

Recursion

0002-add-two-numbers
0025-reverse-nodes-in-k-group
0206-reverse-linked-list
0231-power-of-two
0234-palindrome-linked-list
0795-k-th-symbol-in-grammar
1013-fibonacci-number
2050-count-good-numbers

Memoization

0139-word-break
1013-fibonacci-number

Bit Manipulation

0029-divide-two-integers
0078-subsets
0090-subsets-ii
0136-single-number
0231-power-of-two
0338-counting-bits
0795-k-th-symbol-in-grammar
2323-minimum-bit-flips-to-convert-number

Backtracking

0017-letter-combinations-of-a-phone-number
0022-generate-parentheses
0039-combination-sum
0040-combination-sum-ii
0051-n-queens
0078-subsets
0079-word-search
0090-subsets-ii
0131-palindrome-partitioning
0216-combination-sum-iii
0282-expression-add-operators

Depth-First Search

0079-word-search