LeetCode-Questions

Leetcode Question Answers

My LeetCode Profile :

https://leetcode.com/u/chafleharsh/

My Codolio Profile :

https://codolio.com/profile/Harshchafle

DSA_SHEET :

https://docs.google.com/spreadsheets/d/119u25NO-4ZJ9zwfUKs5eGNo0exCVq3gZEFWvkCDiMqI/edit?usp=sharing

TLE_Eliminator's SHEET :

https://www.tle-eliminators.com/cp-sheet

STRIVER's SHEET

https://takeuforward.org/strivers-a2z-dsa-course/strivers-a2z-dsa-course-sheet-2

DSA_IN_JAVA :

https://youtu.be/RJ733wzbNoA?si=KblIDBu3-NXi3Pu7

CP-Algorithms :

https://cp-algorithms.com/

SOS Dynamic Programming [Tutorial] :

https://codeforces.com/blog/entry/45223

LeetCode Topics

Array

0026-remove-duplicates-from-sorted-array
0040-combination-sum-ii
0123-best-time-to-buy-and-sell-stock-iii
0128-longest-consecutive-sequence
0135-candy
0149-max-points-on-a-line
0188-best-time-to-buy-and-sell-stock-iv
0380-insert-delete-getrandom-o1
0399-evaluate-division
0525-contiguous-array
0877-stone-game
1288-remove-covered-intervals
1306-jump-game-iii
1331-rank-transform-of-an-array
1406-stone-game-iii
1464-maximum-product-of-two-elements-in-an-array
1563-stone-game-v
1686-stone-game-vi
1732-find-the-highest-altitude
2144-minimum-cost-of-buying-candies-with-discount
2161-partition-array-according-to-given-pivot
2447-number-of-subarrays-with-gcd-equal-to-k
2470-number-of-subarrays-with-lcm-equal-to-k
2574-left-and-right-sum-differences
3312-sorted-gcd-pair-queries
3336-find-the-number-of-subsequences-with-equal-gcd
3514-number-of-unique-xor-triplets-ii
3532-path-existence-queries-in-a-graph-i
3643-flip-square-submatrix-vertically
3702-longest-subsequence-with-non-zero-bitwise-xor
3838-weighted-word-mapping
3867-sum-of-gcd-of-formed-pairs

Depth-First Search

0133-clone-graph
0207-course-schedule
0399-evaluate-division
1306-jump-game-iii
2685-count-the-number-of-complete-components
3310-remove-methods-from-project

Breadth-First Search

0133-clone-graph
0207-course-schedule
0399-evaluate-division
1306-jump-game-iii
2685-count-the-number-of-complete-components
3310-remove-methods-from-project

Greedy

0135-candy
1686-stone-game-vi
2144-minimum-cost-of-buying-candies-with-discount
3016-minimum-number-of-pushes-to-type-word-ii

Sorting

1288-remove-covered-intervals
1331-rank-transform-of-an-array
1464-maximum-product-of-two-elements-in-an-array
1686-stone-game-vi
2144-minimum-cost-of-buying-candies-with-discount
3016-minimum-number-of-pushes-to-type-word-ii
3517-smallest-palindromic-rearrangement-i
3867-sum-of-gcd-of-formed-pairs

Prefix Sum

0525-contiguous-array
1732-find-the-highest-altitude
2574-left-and-right-sum-differences
3312-sorted-gcd-pair-queries

Math

0149-max-points-on-a-line
0380-insert-delete-getrandom-o1
0877-stone-game
1344-angle-between-hands-of-a-clock
1406-stone-game-iii
1563-stone-game-v
1686-stone-game-vi
2447-number-of-subarrays-with-gcd-equal-to-k
2470-number-of-subarrays-with-lcm-equal-to-k
3312-sorted-gcd-pair-queries
3336-find-the-number-of-subsequences-with-equal-gcd
3345-smallest-divisible-digit-product-i
3514-number-of-unique-xor-triplets-ii
3658-gcd-of-odd-and-even-sums
3751-total-waviness-of-numbers-in-range-i
3754-concatenate-non-zero-digits-and-multiply-by-sum-i
3867-sum-of-gcd-of-formed-pairs

Dynamic Programming

0123-best-time-to-buy-and-sell-stock-iii
0131-palindrome-partitioning
0132-palindrome-partitioning-ii
0188-best-time-to-buy-and-sell-stock-iv
0647-palindromic-substrings
0877-stone-game
1406-stone-game-iii
1563-stone-game-v
3336-find-the-number-of-subsequences-with-equal-gcd
3751-total-waviness-of-numbers-in-range-i

Enumeration

1291-sequential-digits
3345-smallest-divisible-digit-product-i
3499-maximize-active-section-with-trade-i
3514-number-of-unique-xor-triplets-ii
3751-total-waviness-of-numbers-in-range-i

Two Pointers

0026-remove-duplicates-from-sorted-array
0647-palindromic-substrings
2095-delete-the-middle-node-of-a-linked-list
2130-maximum-twin-sum-of-a-linked-list
2161-partition-array-according-to-given-pivot
3643-flip-square-submatrix-vertically
3867-sum-of-gcd-of-formed-pairs

Simulation

2161-partition-array-according-to-given-pivot
3838-weighted-word-mapping
3867-sum-of-gcd-of-formed-pairs

String

0030-substring-with-concatenation-of-all-words
0071-simplify-path
0131-palindrome-partitioning
0132-palindrome-partitioning-ii
0399-evaluate-division
0647-palindromic-substrings
1358-number-of-substrings-containing-all-three-characters
3016-minimum-number-of-pushes-to-type-word-ii
3090-maximum-length-substring-with-two-occurrences
3499-maximize-active-section-with-trade-i
3517-smallest-palindromic-rearrangement-i
3838-weighted-word-mapping

Linked List

2095-delete-the-middle-node-of-a-linked-list
2130-maximum-twin-sum-of-a-linked-list

Stack

0071-simplify-path
2130-maximum-twin-sum-of-a-linked-list

Hash Table

0030-substring-with-concatenation-of-all-words
0128-longest-consecutive-sequence
0133-clone-graph
0149-max-points-on-a-line
0380-insert-delete-getrandom-o1
0525-contiguous-array
1331-rank-transform-of-an-array
1358-number-of-substrings-containing-all-three-characters
3016-minimum-number-of-pushes-to-type-word-ii
3090-maximum-length-substring-with-two-occurrences
3312-sorted-gcd-pair-queries
3532-path-existence-queries-in-a-graph-i

Sliding Window

0030-substring-with-concatenation-of-all-words
1358-number-of-substrings-containing-all-three-characters
3090-maximum-length-substring-with-two-occurrences

Union-Find

0128-longest-consecutive-sequence
0399-evaluate-division
2685-count-the-number-of-complete-components
3532-path-existence-queries-in-a-graph-i

Binary Search

3312-sorted-gcd-pair-queries
3532-path-existence-queries-in-a-graph-i

Graph Theory

0133-clone-graph
0207-course-schedule
0399-evaluate-division
2685-count-the-number-of-complete-components
3310-remove-methods-from-project
3532-path-existence-queries-in-a-graph-i

Geometry

0149-max-points-on-a-line

Number Theory

2447-number-of-subarrays-with-gcd-equal-to-k
2470-number-of-subarrays-with-lcm-equal-to-k
3312-sorted-gcd-pair-queries
3336-find-the-number-of-subsequences-with-equal-gcd
3658-gcd-of-odd-and-even-sums
3867-sum-of-gcd-of-formed-pairs

Combinatorics

3312-sorted-gcd-pair-queries

Counting

3016-minimum-number-of-pushes-to-type-word-ii
3312-sorted-gcd-pair-queries

Shortest Path

0399-evaluate-division

Topological Sort

0207-course-schedule

Bit Manipulation

3514-number-of-unique-xor-triplets-ii
3702-longest-subsequence-with-non-zero-bitwise-xor

Backtracking

0040-combination-sum-ii
0131-palindrome-partitioning

Heap (Priority Queue)

1464-maximum-product-of-two-elements-in-an-array
1686-stone-game-vi

Counting Sort

3517-smallest-palindromic-rearrangement-i

Design

0380-insert-delete-getrandom-o1

Randomized

0380-insert-delete-getrandom-o1

Game Theory

0877-stone-game
1406-stone-game-iii
1563-stone-game-v
1686-stone-game-vi

Matrix

3643-flip-square-submatrix-vertically

Minimax

1406-stone-game-iii
1686-stone-game-vi

Zero-Sum Game

1406-stone-game-iii
1686-stone-game-vi