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DSA Questions - FULL LIST
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DSA Questions - FULL LIST

XS
Last edited 2 hours ago by XS.

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DSA Leetcode Questions Cheat sheets
Search
Category
No.
Problem Name
Difficulty (% Effort)
STATUS
Python
C++
Rust
URL
Scale
Number
Rev. Count
ALGO (if used)
Notes
Text
287
Find The Duplicate Number
https://leetcode.com/problems/find-the-duplicate-number/
00
2
00
2
Floyd’s Algo - not implemented
75
Sort Colors
https://leetcode.com/problems/sort-colors/
00
2
00
1
Used simple Insertion sort. Or counting sort with multiple passes.
26
Remove Duplicates From Sorted Array
⁠
https://leetcode.com/problems/remove-duplicates-from-sorted-array/
⁠
⁠
00
2
00
2
using set() or dict(). (set or vector for c++)
(HashSet or HashMap)
73
Set Matrix Zeroes
https://leetcode.com/problems/set-matrix-zeroes/
00
2
00
1
separate loops, scan and edit inplace
283
Move Zeroes
https://leetcode.com/problems/move-zeroes/
00
2
00
1
2 pointers Tricky - removing the “swap redundancy” logic
121
Best Time To Buy And Sell Stock
https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
00
3
00
1
keep track of previous days minimum buy.
​
Chocolate Distribution Problem
https://www.geeksforgeeks.org/chocolate-distribution-problem/
00
1
00
sliding window and simple loop adjustments
1
Two Sum
https://leetcode.com/problems/two-sum/
00
2
00
hashmap or dictionary
122
Best Time To Buy And Sell Stock II
https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/
00
2
00
2
greedy, basically selling and buying again when a dip in price is found
974
Subarray Sums Divisible By K
https://leetcode.com/problems/subarray-sums-divisible-by-k/
00
2
00
2
HashMap + modulo arithmetic.
Tricky to visualize the subarrays on each step
​
Find All Duplicates In An Array
https://leetcode.com/problems/find-all-duplicates-in-an-array/
00
2
00
2
sort then loop through.
HashMap if not space constraints
specific use case (optimized)
​
Container With Most Water
https://leetcode.com/problems/container-with-most-water/
00
00
​
​
3sum
https://leetcode.com/problems/3sum/
00
1
00
single loop + 2 pointers
check for duplicates on outer as well as inner loops
​
4sum
https://leetcode.com/problems/4sum/
00
00
​
​
Maximum Points You Can Obtain From Cards
https://leetcode.com/problems/maximum-points-you-can-obtain-from-cards/
00
1
00
sliding window, but for the remaining items.
convert right index to +ve if -ve
​
Subarray Sum Equals K
https://leetcode.com/problems/subarray-sum-equals-k/
00
1
00
visualization is done using the approach of finding the number of times k less pref_sum were present.
​
Spiral Matrix
https://leetcode.com/problems/spiral-matrix/
00
00
​
​
Word Search
https://leetcode.com/problems/word-search/
00
1
00
backtracking
recursive approach
O(m * n * 4^L)
​
Jump Game
https://leetcode.com/problems/jump-game/
00
00
​
​
Merge Sorted Array
https://leetcode.com/problems/merge-sorted-array/
00
0
00
​
​
Majority Element
https://leetcode.com/problems/majority-element/
00
00
​
​
Reverse Pairs
https://leetcode.com/problems/reverse-pairs/
00
00
​
​
Print All Possible Combinations Of R Elements In A Given Array Of Size N
https://www.geeksforgeeks.org/print-all-possible-combinations-of-r-elements-in-a-given-array-of-size-n/
00
00
​
​
Game Of Life
https://leetcode.com/problems/game-of-life/
00
00
​
​
Max Value Of Equation
https://leetcode.com/problems/max-value-of-equation/
00
00
​
​
Insert Delete Getrandom O1 Duplicates Allowed
https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed/
00
00
​
​
Largest Rectangle In Histogram
https://leetcode.com/problems/largest-rectangle-in-histogram/
00
00
​
​
Max Value Of Equation
https://leetcode.com/problems/max-value-of-equation/
00
00
​
​
Valid Parentheses
https://leetcode.com/problems/valid-parentheses/
00
1
00
​
​
Print All The Duplicates In The Input String
https://www.geeksforgeeks.org/print-all-the-duplicates-in-the-input-string/
00
1
00
​
​
Implement Strstr
https://leetcode.com/problems/implement-strstr/
00
1
00
not really a 2 pointers just single pointer with right side handling to prevent out of bounds
​
Longest Common Prefix
https://leetcode.com/problems/longest-common-prefix/
00
1
00
take first word as prefix answer
compare with the next word, modify if necessary
keep doing it with next words
​
Valid Palindrome Ii
https://leetcode.com/problems/valid-palindrome-ii/
00
1
00
just call the similar function again in case of not match
​
Integer To Roman
https://leetcode.com/problems/integer-to-roman/
00
00
​
​
Generate Parentheses
https://leetcode.com/problems/generate-parentheses/
00
1
00
see the rust part for the backtracking and push pop.
​
Simplify Path
https://leetcode.com/problems/simplify-path/
00
1
00
uses stack or queue
find all the valid folders of the path, put them into the stack
construct the path again
​
Smallest Window In A String Containing All The Characters Of Another String 1587115621
https://practice.geeksforgeeks.org/problems/smallest-window-in-a-string-containing-all-the-characters-of-another-string-1587115621/1
00
00
​
​
Reverse Words In A String
https://leetcode.com/problems/reverse-words-in-a-string/
00
00
​
​
Rabin Karp Algorithm For Pattern Searching
https://www.geeksforgeeks.org/rabin-karp-algorithm-for-pattern-searching/
00
00
​
​
Group Anagrams
https://leetcode.com/problems/group-anagrams/
00
00
​
​
Word Wrap1646
https://practice.geeksforgeeks.org/problems/word-wrap1646/1
00
00
​
​
Basic Calculator Ii
https://leetcode.com/problems/basic-calculator-ii/
00
00
​
​
Valid Number
https://leetcode.com/problems/valid-number/
00
00
​
​
Integer To English Words
https://leetcode.com/problems/integer-to-english-words/
00
00
​
​
Minimum Window Substring
https://leetcode.com/problems/minimum-window-substring/
00
1
00
​
​
Text Justification
https://leetcode.com/problems/text-justification/
00
00
​
​
Boyer Moore Algorithm For Pattern Searching
https://www.geeksforgeeks.org/boyer-moore-algorithm-for-pattern-searching/
00
00
​
​
Distinct Subsequences
https://leetcode.com/problems/distinct-subsequences/
00
00
​
​
Maximum Size Rectangle Binary Sub Matrix 1s
https://www.geeksforgeeks.org/maximum-size-rectangle-binary-sub-matrix-1s/
00
00
​
​
Find Number Of Islands
https://www.geeksforgeeks.org/find-number-of-islands/
00
00
​
​
Given Matrix O X Replace O X Surrounded X
https://www.geeksforgeeks.org/given-matrix-o-x-replace-o-x-surrounded-x/
00
00
​
​
Spiral Matrix
https://leetcode.com/problems/spiral-matrix/
00
00
​
​
Rotate Image
https://leetcode.com/problems/rotate-image/
00
00
​
​
Minimum Moves To Equal Array Elements
https://leetcode.com/problems/minimum-moves-to-equal-array-elements/
00
00
​
​
Add Binary
https://leetcode.com/problems/add-binary/solved
00
00
​
​
Maximum Product Of Three Numbers
https://leetcode.com/problems/maximum-product-of-three-numbers/
00
00
​
​
Excel Sheet Column Title
https://leetcode.com/problems/excel-sheet-column-title/
00
00
​
​
Happy Number
https://leetcode.com/problems/happy-number/
00
00
​
​
Palindrome Number
https://leetcode.com/problems/palindrome-number/
00
00
​
​
Missing Number
https://leetcode.com/problems/missing-number/
00
00
​
​
Reverse Integer
https://leetcode.com/problems/reverse-integer/
00
00
​
​
Power Of Two
https://leetcode.com/problems/power-of-two/
00
00
​
​
Max Points On A Line
https://leetcode.com/problems/max-points-on-a-line/
00
00
​
​
Valid Square
https://leetcode.com/problems/valid-square/
00
00
​
​
The Kth Factor Of N
https://leetcode.com/problems/the-kth-factor-of-n/
00
00
​
​
Permute Two Arrays Sum Every Pair Greater Equal K
https://www.geeksforgeeks.org/permute-two-arrays-sum-every-pair-greater-equal-k/
00
00
​
​
Ceiling In A Sorted Array
https://www.geeksforgeeks.org/ceiling-in-a-sorted-array/
00
00
​
​
Find A Pair With The Given Difference
https://www.geeksforgeeks.org/find-a-pair-with-the-given-difference/
00
00
​
​
Permute Two Arrays Sum Every Pair Greater Equal K
https://www.geeksforgeeks.org/permute-two-arrays-sum-every-pair-greater-equal-k/
00
00
​
​
Check Reversing Sub Array Make Array Sorted
https://www.geeksforgeeks.org/check-reversing-sub-array-make-array-sorted/
00
00
​
​
Radix Sort
https://www.geeksforgeeks.org/radix-sort/
00
00
​
​
A Product Array Puzzle
https://leetcode.com/problems/product-of-array-except-self/
00
1
00
​
​
Make Array Elements Equal Minimum Cost
https://www.geeksforgeeks.org/make-array-elements-equal-minimum-cost/
00
00
​
162
Find Peak Element
https://leetcode.com/problems/find-peak-element/
00
1
00
simple ambiguous (very easy as the answer may not be unique)
Binary search is not mandatory
​
Allocate Minimum Number Of Pages0937
https://practice.geeksforgeeks.org/problems/allocate-minimum-number-of-pages0937/1
00
00
​
​
Minimum Number Swaps Required Sort Array
https://www.geeksforgeeks.org/minimum-number-swaps-required-sort-array/
00
00
​
​
AGGRCOW (SPOJ)
https://www.spoj.com/problems/AGGRCOW/
00
00
​
33
Search In Rotated Sorted Array
https://leetcode.com/problems/search-in-rotated-sorted-array/
00
00
​
​
Count Of Smaller Numbers After Self
https://leetcode.com/problems/count-of-smaller-numbers-after-self/
00
00
​
​
Split Array Largest Sum
https://leetcode.com/problems/split-array-largest-sum/
00
00
​
876
Middle Of The Linked List
https://leetcode.com/problems/middle-of-the-linked-list/
00
1
00
slow fast pointers, 2 pointers
141
Linked List Cycle
https://leetcode.com/problems/linked-list-cycle/
00
1
00
slow fast pointers, 2 pointers
1290
Convert Binary Number In A Linked List To Integer
https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/
00
00
​
83
Remove Duplicates From Sorted List
https://leetcode.com/problems/remove-duplicates-from-sorted-list/
00
00
​
​
Sort A Linked List Of 0s 1s Or 2s
https://www.geeksforgeeks.org/sort-a-linked-list-of-0s-1s-or-2s/
00
00
​
203
Remove Linked List Elements
https://leetcode.com/problems/remove-linked-list-elements/
00
1
00
​
21
Merge Two Sorted Lists
https://leetcode.com/problems/merge-two-sorted-lists/
00
00
​
​
Multiply Two Numbers Represented Linked Lists
https://www.geeksforgeeks.org/multiply-two-numbers-represented-linked-lists/
00
00
​
160
Intersection Of Two Linked Lists
https://leetcode.com/problems/intersection-of-two-linked-lists/
00
1
00
method 1: using set
method 2: using 2 pointers (saves space)
​
Given Only A Pointer To A Node To Be Deleted In A Singly Linked List How Do You Delete It
https://www.geeksforgeeks.org/given-only-a-pointer-to-a-node-to-be-deleted-in-a-singly-linked-list-how-do-you-delete-it/
00
00
​
234
Palindrome Linked List
https://leetcode.com/problems/palindrome-linked-list/
00
1
00
method 1: using list
method 2: using 2 pointers, multiple separate loops and reversing the remaining half list to compare
206
Reverse Linked List
https://leetcode.com/problems/reverse-linked-list/
00
1
00
keep the track of prev node, start with prev = None in python
2
Add Two Numbers
https://leetcode.com/problems/add-two-numbers/
00
00
​
td 138
Copy List With Random Pointer
https://leetcode.com/problems/copy-list-with-random-pointer/
00
00
​
​
Add Two Numbers Ii
https://leetcode.com/problems/add-two-numbers-ii/
00
00
​
​
Reverse Linked List Ii
https://leetcode.com/problems/reverse-linked-list-ii/
00
00
​
​
Reorder List
https://leetcode.com/problems/reorder-list/
00
00
​
​
Remove Nth Node From End Of List
https://leetcode.com/problems/remove-nth-node-from-end-of-list/
00
00
​
​
Flatten A Multilevel Doubly Linked List
https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/
00
00
​
​
Partition List
https://leetcode.com/problems/partition-list/
00
00
​
​
Remove Duplicates From Sorted List Ii
https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/
00
00
​
​
Linked List In Zig Zag Fashion
https://www.geeksforgeeks.org/linked-list-in-zig-zag-fashion/
00
00
​
​
Sort List
https://leetcode.com/problems/sort-list/
00
00
​
​
Segregate Even And Odd Elements In A Linked List
https://www.geeksforgeeks.org/segregate-even-and-odd-elements-in-a-linked-list/
00
00
​
​
Rearrange A Given Linked List In Place
https://www.geeksforgeeks.org/rearrange-a-given-linked-list-in-place/
00
00
​
​
Merge K Sorted Lists
https://leetcode.com/problems/merge-k-sorted-lists/
00
00
​
​
Reverse Nodes In K Group
https://leetcode.com/problems/reverse-nodes-in-k-group/
00
00
​
​
Merge Sort For Linked List
https://www.geeksforgeeks.org/merge-sort-for-linked-list/
00
00
​
​
Flattening A Linked List
https://www.geeksforgeeks.org/flattening-a-linked-list/
00
00
​
​
Subtract Two Numbers Represented As Linked Lists
https://www.geeksforgeeks.org/subtract-two-numbers-represented-as-linked-lists/
00
00
​
​
Implement Queue Using Stacks
https://leetcode.com/problems/implement-queue-using-stacks/
00
00
​
​
Backspace String Compare
https://leetcode.com/problems/backspace-string-compare/
00
00
​
​
Implement Stack Using Queues
https://leetcode.com/problems/implement-stack-using-queues/
00
00
​
​
Implement Stack Queue Using Deque
https://www.geeksforgeeks.org/implement-stack-queue-using-deque/
00
00
​
​
Next Greater Element I
https://leetcode.com/problems/next-greater-element-i/
00
00
​
​
Stack Set 4 Evaluation Postfix Expression
https://www.geeksforgeeks.org/stack-set-4-evaluation-postfix-expression/
00
00
​
​
Implement Two Stacks In An Array
https://www.geeksforgeeks.org/implement-two-stacks-in-an-array/
00
00
​
​
Minimum Cost Tree From Leaf Values
https://leetcode.com/problems/minimum-cost-tree-from-leaf-values/
00
00
​
​
Daily Temperatures
https://leetcode.com/problems/daily-temperatures/
00
00
​
​
Distance Of Nearest Cell Having 1 1587115620
https://practice.geeksforgeeks.org/problems/distance-of-nearest-cell-having-1-1587115620/1
00
00
​
​
Online Stock Span
https://leetcode.com/problems/online-stock-span/
00
00
​
​
Rotten Oranges2536
https://practice.geeksforgeeks.org/problems/rotten-oranges2536/1
00
00
​
​
Sum Of Subarray Minimums
https://leetcode.com/problems/sum-of-subarray-minimums/
00
00
​
​
Evaluate Reverse Polish Notation
https://leetcode.com/problems/evaluate-reverse-polish-notation/
00
00
​
​
Circular Tour
https://practice.geeksforgeeks.org/problems/circular-tour/1
00
00
​
​
Remove All Adjacent Duplicates In String Ii
https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii/
00
00
​
​
Flatten Nested List Iterator
https://leetcode.com/problems/flatten-nested-list-iterator/
00
00
​
​
Find The Maximum Of Minimums For Every Window Size In A Given Array
https://www.geeksforgeeks.org/find-the-maximum-of-minimums-for-every-window-size-in-a-given-array/
00
00
​
​
Lru Cache Implementation
https://www.geeksforgeeks.org/lru-cache-implementation/
00
00
​
​
The Celebrity Problem
http://geeksforgeeks.org/the-celebrity-problem/
00
00
​
​
Diameter Of Binary Tree
https://leetcode.com/problems/diameter-of-binary-tree/
00
00
​
​
Invert Binary Tree
https://leetcode.com/problems/invert-binary-tree/
00
00
​
​
Subtree Of Another Tree
https://leetcode.com/problems/subtree-of-another-tree/
00
00
​
​
Range Sum Of Bst
https://leetcode.com/problems/range-sum-of-bst/
00
00
​
​
Symmetric Tree
https://leetcode.com/problems/symmetric-tree/
00
00
​
​
Convert Sorted Array To Binary Search Tree
https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
00
00
​
​
Merge Two Binary Trees
https://leetcode.com/problems/merge-two-binary-trees/
00
00
​
​
Maximum Depth Of Binary Tree
https://leetcode.com/problems/maximum-depth-of-binary-tree/
00
00
​
​
Binary Tree Paths
https://leetcode.com/problems/binary-tree-paths/
00
00
​
​
Same Tree
https://leetcode.com/problems/same-tree/
00
00
​
​
Lowest Common Ancestor Of A Binary Search Tree
https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/
00
00
​
​
Path Sum
https://leetcode.com/problems/path-sum/
00
00
​
​
Minimum Absolute Difference In Bst
https://leetcode.com/problems/minimum-absolute-difference-in-bst/
00
00
​
​
Sum Of Left Leaves
https://leetcode.com/problems/sum-of-left-leaves/
00
00
​
​
Balanced Binary Tree
https://leetcode.com/problems/balanced-binary-tree/
00
00
​
​
Predecessor And Successor
https://practice.geeksforgeeks.org/problems/predecessor-and-successor/1
00
00
​
​
Binary Tree Inorder Traversal
https://leetcode.com/problems/binary-tree-inorder-traversal/
00
00
​
​
Check Whether Bst Contains Dead End
https://practice.geeksforgeeks.org/problems/check-whether-bst-contains-dead-end/1
00
00
​
​
Binary Search Tree Iterator
https://leetcode.com/problems/binary-search-tree-iterator/
00
00
​
​
Lowest Common Ancestor Of A Binary Tree
https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
00
00
​
​
Unique Binary Search Trees Ii
https://leetcode.com/problems/unique-binary-search-trees-ii/
00
00
​
​
All Nodes Distance K In Binary Tree
https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/
00
00
​
​
Validate Binary Search Tree
https://leetcode.com/problems/validate-binary-search-tree/
00
00
​
​
Binary Tree Right Side View
https://leetcode.com/problems/binary-tree-right-side-view/
00
00
​
​
Redundant Connection
https://leetcode.com/problems/redundant-connection/
00
00
​
​
Binary Tree Level Order Traversal
https://leetcode.com/problems/binary-tree-level-order-traversal/
00
00
​
​
Path Sum Iii
https://leetcode.com/problems/path-sum-iii/
00
00
​
​
Construct Binary Tree From Preorder And Postorder Traversal
https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal/
00
00
​
​
Unique Binary Search Trees
https://leetcode.com/problems/unique-binary-search-trees/
00
00
​
​
Recover Binary Search Tree
https://leetcode.com/problems/recover-binary-search-tree/
00
00
​
​
Populating Next Right Pointers In Each Node
https://leetcode.com/problems/populating-next-right-pointers-in-each-node/
00
00
​
​
Flatten Binary Tree To Linked List
https://leetcode.com/problems/flatten-binary-tree-to-linked-list/
00
00
​
​
Maximum Width Of Binary Tree
https://leetcode.com/problems/maximum-width-of-binary-tree/
00
00
​
​
Min Distance Between Two Given Nodes Of A Binary Tree
https://practice.geeksforgeeks.org/problems/min-distance-between-two-given-nodes-of-a-binary-tree/1
00
00
​
​
Kth Smallest Element In A Bst
https://leetcode.com/problems/kth-smallest-element-in-a-bst/
00
00
​
​
Binary Tree Zigzag Level Order Traversal
https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/
00
00
​
​
Count Bst Nodes That Lie In A Given Range
https://practice.geeksforgeeks.org/problems/count-bst-nodes-that-lie-in-a-given-range/1
00
00
​
​
Preorder To Postorder4423
https://practice.geeksforgeeks.org/problems/preorder-to-postorder4423/1
00
00
​
​
Binary Tree To Dll
https://practice.geeksforgeeks.org/problems/binary-tree-to-dll/1
00
00
​
​
Binary Tree Maximum Path Sum
https://leetcode.com/problems/binary-tree-maximum-path-sum/
00
00
​
​
Sum Of Distances In Tree
https://leetcode.com/problems/sum-of-distances-in-tree/
00
00
​
​
Binary Tree Cameras
https://leetcode.com/problems/binary-tree-cameras/
00
00
​
​
Vertical Order Traversal Of A Binary Tree
https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/
00
00
​
​
Print K Sum Paths Binary Tree
https://www.geeksforgeeks.org/print-k-sum-paths-binary-tree/
00
00
​
​
Serialize And Deserialize Binary Tree
https://leetcode.com/problems/serialize-and-deserialize-binary-tree/
00
00
​
​
Find Median Bst Time O1 Space
https://www.geeksforgeeks.org/find-median-bst-time-o1-space/
00
00
​
​
Largest Bst Binary Tree Set 2
https://www.geeksforgeeks.org/largest-bst-binary-tree-set-2/
00
00
​
​
Construct Bst From Given Preorder Traversa
https://www.geeksforgeeks.org/construct-bst-from-given-preorder-traversa/
00
00
​
​
Bfs Traversal Of Graph
https://practice.geeksforgeeks.org/problems/bfs-traversal-of-graph/1
00
00
​
​
Depth First Search Or Dfs For A Graph
https://www.geeksforgeeks.org/depth-first-search-or-dfs-for-a-graph/
00
00
​
​
Number Of Islands
https://leetcode.com/problems/number-of-islands/
00
00
​
​
Flood Fill
https://leetcode.com/problems/flood-fill/
00
00
​
​
Rat In A Maze Problem
https://practice.geeksforgeeks.org/problems/rat-in-a-maze-problem/1
00
00
​
​
Detect Cycle In An Undirected Graph
https://practice.geeksforgeeks.org/problems/detect-cycle-in-an-undirected-graph/1
00
00
​
​
Detect Cycle In A Graph
https://www.geeksforgeeks.org/detect-cycle-in-a-graph/
00
00
​
​
Steps By Knight5927
https://practice.geeksforgeeks.org/problems/steps-by-knight5927/1
00
00
​
​
Decode String
https://leetcode.com/problems/decode-string/
00
00
​
​
Shortest Bridge
https://leetcode.com/problems/shortest-bridge/
00
00
​
​
Number Of Operations To Make Network Connected
https://leetcode.com/problems/number-of-operations-to-make-network-connected/
00
00
​
​
Find Eventual Safe States
https://leetcode.com/problems/find-eventual-safe-states/
00
00
​
​
Strongly Connected Components Kosarajus Algo
https://practice.geeksforgeeks.org/problems/strongly-connected-components-kosarajus-algo/1
00
00
​
​
Time Needed To Inform All Employees
https://leetcode.com/problems/time-needed-to-inform-all-employees/
00
00
​
​
Graph Coloring Applications
https://www.geeksforgeeks.org/graph-coloring-applications/#:~:text=Graph%20coloring%20problem%20is%20toare%20colored%20using%20same%20color.
00
00
​
​
Most Stones Removed With Same Row Or Column
https://leetcode.com/problems/most-stones-removed-with-same-row-or-column/
00
00
​
​
As Far From Land As Possible
https://leetcode.com/problems/as-far-from-land-as-possible/
00
00
​
​
Find The City With The Smallest Number Of Neighbors At A Threshold Distance
https://leetcode.com/problems/find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance/
00
00
​
​
Find Whether It Is Possible To Finish All Tasks Or Not From Given Dependencies
https://www.geeksforgeeks.org/find-whether-it-is-possible-to-finish-all-tasks-or-not-from-given-dependencies/
00
00
​
​
Prims Minimum Spanning Tree Mst Greedy Algo 5
https://www.geeksforgeeks.org/prims-minimum-spanning-tree-mst-greedy-algo-5/
00
00
​
​
Implementing Floyd Warshall2042
https://practice.geeksforgeeks.org/problems/implementing-floyd-warshall2042/1
00
00
​
​
Evaluate Division
https://leetcode.com/problems/evaluate-division/
00
00
​
​
Snakes And Ladders
https://leetcode.com/problems/snakes-and-ladders/
00
00
​
​
Topological Sort
https://practice.geeksforgeeks.org/problems/topological-sort/1
00
00
​
​
Cheapest Flights Within K Stops
https://leetcode.com/problems/cheapest-flights-within-k-stops/description/
00
00
​
​
Detect Negative Cycle Graph Bellman Ford
https://www.geeksforgeeks.org/detect-negative-cycle-graph-bellman-ford/
00
00
​
​
Bipartite Graph
https://www.geeksforgeeks.org/bipartite-graph/
00
00
​
​
Longest Increasing Path In A Matrix
https://leetcode.com/problems/longest-increasing-path-in-a-matrix/
00
00
​
​
Making A Large Island
https://leetcode.com/problems/making-a-large-island/
00
00
​
​
Remove Boxes
https://leetcode.com/problems/remove-boxes/
00
00
​
​
Critical Connections In A Network
https://leetcode.com/problems/critical-connections-in-a-network/
00
00
​
​
Alien Dictionary
https://practice.geeksforgeeks.org/problems/alien-dictionary/1
00
00
​
​
Water Jug Problem Using Bfs
https://www.geeksforgeeks.org/water-jug-problem-using-bfs/
00
00
​
​
Travelling Salesman Problem Set 1
https://www.geeksforgeeks.org/travelling-salesman-problem-set-1/
00
00
​
​
Total Number Spanning Trees Graph
https://www.geeksforgeeks.org/total-number-spanning-trees-graph/
00
00
​
​
Word Ladder
https://leetcode.com/problems/word-ladder/
00
00
​
​
Minimize Cash Flow Among Given Set Friends Borrowed Money
https://www.geeksforgeeks.org/minimize-cash-flow-among-given-set-friends-borrowed-money/
00
00
​
​
Design Add And Search Words Data Structure
https://leetcode.com/problems/design-add-and-search-words-data-structure/
00
00
​
​
Word Break Problem Trie Solution
https://www.geeksforgeeks.org/word-break-problem-trie-solution/
00
00
​
​
Trie Insert And Search
https://www.geeksforgeeks.org/trie-insert-and-search/
00
00
​
​
K Anagrams 1
https://practice.geeksforgeeks.org/problems/k-anagrams-1/0
00
00
​
​
Palindrome Pairs
https://leetcode.com/problems/palindrome-pairs/
00
00
​
​
Phone Directory
https://practice.geeksforgeeks.org/problems/phone-directory/0
00
00
​
​
Top K Frequent Elements
https://leetcode.com/problems/top-k-frequent-elements/
00
00
​
​
Kth Largest Element In An Array
https://leetcode.com/problems/kth-largest-element-in-an-array/
00
00
​
​
Ugly Number Ii
https://leetcode.com/problems/ugly-number-ii/
00
00
​
​
Furthest Building You Can Reach
https://leetcode.com/problems/furthest-building-you-can-reach/
00
00
​
​
Kth Smallest Element In A Sorted Matrix
https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/
00
00
​
​
Reorganize String
https://leetcode.com/problems/reorganize-string/
00
00
​
​
Find The Most Competitive Subsequence
https://leetcode.com/problems/find-the-most-competitive-subsequence/
00
00
​
​
Smallest Positive Missing Number 1587115621
https://practice.geeksforgeeks.org/problems/smallest-positive-missing-number-1587115621/1/
00
00
​
​
Largest Subarray With 0 Sum
https://practice.geeksforgeeks.org/problems/largest-subarray-with-0-sum/1/
00
00
​
​
K Closest Points To Origin
https://leetcode.com/problems/k-closest-points-to-origin/
00
00
​
​
Minimum Number Of Refueling Stops
https://leetcode.com/problems/minimum-number-of-refueling-stops/
00
00
​
​
Minimum Cost To Hire K Workers
https://leetcode.com/problems/minimum-cost-to-hire-k-workers/
00
00
​
​
Swim In Rising Water
https://leetcode.com/problems/swim-in-rising-water/
00
00
​
​
Sliding Window Maximum
https://leetcode.com/problems/sliding-window-maximum/
00
00
​
​
Climbing Stairs
https://leetcode.com/problems/climbing-stairs
00
00
​
​
Maximum Product Subarray
https://leetcode.com/problems/maximum-product-subarray/
00
00
​
​
Ones And Zeroes
https://leetcode.com/problems/ones-and-zeroes/
00
00
​
​
Counting Bits
https://leetcode.com/problems/counting-bits/
00
00
​
​
Knight Dialer
https://leetcode.com/problems/knight-dialer/
00
00
​
​
Cutted Segments1642
https://practice.geeksforgeeks.org/problems/cutted-segments1642/1
00
00
​
​
Unique Paths
https://leetcode.com/problems/unique-paths/
00
00
​
​
Minimum Path Sum
https://leetcode.com/problems/minimum-path-sum/
00
00
​
​
Coin Change
https://leetcode.com/problems/coin-change/
00
00
​
​
Decode Ways
https://leetcode.com/problems/decode-ways/
00
00
​
​
Maximum Length Of Repeated Subarray
https://leetcode.com/problems/maximum-length-of-repeated-subarray/
00
00
​
​
Longest Increasing Subsequence
https://leetcode.com/problems/longest-increasing-subsequence/
00
00
​
​
Longest Common Substring1452
https://practice.geeksforgeeks.org/problems/longest-common-substring1452/1
00
00
​
​
Count Square Submatrices With All Ones
https://leetcode.com/problems/count-square-submatrices-with-all-ones/
00
00
​
​
Maximal Square
https://leetcode.com/problems/maximal-square/
00
00
​
​
Mobile Numeric Keypad5456
https://practice.geeksforgeeks.org/problems/mobile-numeric-keypad5456/1
00
00
​
​
Weighted Job Scheduling
https://www.geeksforgeeks.org/weighted-job-scheduling/
00
00
​
​
Delete And Earn
https://leetcode.com/problems/delete-and-earn/
00
00
​
​
Range Sum Query 2d Immutable
https://leetcode.com/problems/range-sum-query-2d-immutable/
00
00
​
​
Optimal Binary Search Tree Dp 24
https://www.geeksforgeeks.org/optimal-binary-search-tree-dp-24/
00
00
​
​
Frog Jump
https://leetcode.com/problems/frog-jump/
00
00
​
​
Best Time To Buy And Sell Stock Iv
https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv/
00
00
​
​
Minimum Insertion Steps To Make A String Palindrome
https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome/
00
00
​
​
Largest Area Rectangular Sub Matrix Equal Number 1s 0s
https://www.geeksforgeeks.org/largest-area-rectangular-sub-matrix-equal-number-1s-0s/
00
00
​
​
Trapping Rain Water
https://leetcode.com/problems/trapping-rain-water/
00
00
​
​
Minimum Cost To Merge Stones
https://leetcode.com/problems/minimum-cost-to-merge-stones/
00
00
​
​
Count Different Palindromic Subsequences
https://leetcode.com/problems/count-different-palindromic-subsequences/
00
00
​
​
Maximal Rectangle
https://leetcode.com/problems/maximal-rectangle/
00
00
​
​
Burst Balloons
https://leetcode.com/problems/burst-balloons/
00
00
​
​
Super Egg Drop
https://leetcode.com/problems/super-egg-drop/
00
00
​
​
Sort Colors
https://leetcode.com/problems/sort-colors/
00
00
​
​
Longest Repeating Character Replacement
https://leetcode.com/problems/longest-repeating-character-replacement/
00
00
​
​
Maximum Number Of Visible Points
https://leetcode.com/problems/maximum-number-of-visible-points/
00
00
​
​
Gas Station
https://leetcode.com/problems/gas-station/
00
00
​
​
Minimum Cost For Acquiring All Coins With K Extra Coins Allowed With Every Coin
https://www.geeksforgeeks.org/minimum-cost-for-acquiring-all-coins-with-k-extra-coins-allowed-with-every-coin/
00
00
​
​
Restore The Array From Adjacent Pairs
https://leetcode.com/problems/restore-the-array-from-adjacent-pairs/
00
00
​
​
Task Scheduler
https://leetcode.com/problems/task-scheduler/
00
00
​
​
Minimum Deletions To Make Character Frequencies Unique
https://leetcode.com/problems/minimum-deletions-to-make-character-frequencies-unique/
00
00
​
​
Remove K Digits
https://leetcode.com/problems/remove-k-digits/
00
00
​
​
CHOCOLA (SPOJ)
https://www.spoj.com/problems/CHOCOLA/
00
00
​
​
Non Overlapping Intervals
https://leetcode.com/problems/non-overlapping-intervals/
00
00
​
​
Minimum Deletion Cost To Avoid Repeating Letters
https://leetcode.com/problems/minimum-deletion-cost-to-avoid-repeating-letters/
00
00
​
​
Minimum Sum Two Numbers Formed Digits Array 2
https://www.geeksforgeeks.org/minimum-sum-two-numbers-formed-digits-array-2/
00
00
​
​
Combination Sum Ii
https://leetcode.com/problems/combination-sum-ii/
00
00
​
​
Subset Sum Problem2014
https://practice.geeksforgeeks.org/problems/subset-sum-problem2014/1
00
00
​
​
Combinations
https://leetcode.com/problems/combinations/
00
00
​
​
Subsets Ii
https://leetcode.com/problems/subsets-ii/
00
00
​
​
M Coloring Problem 1587115620
https://practice.geeksforgeeks.org/problems/m-coloring-problem-1587115620/1
00
00
​
​
Beautiful Arrangement
https://leetcode.com/problems/beautiful-arrangement/
00
00
​
​
Palindrome Partitioning
https://leetcode.com/problems/palindrome-partitioning/
00
00
​
​
Permutations Ii
https://leetcode.com/problems/permutations-ii/
00
00
​
​
Word Search Ii
https://leetcode.com/problems/word-search-ii/
00
00
​
​
Sudoku Solver
https://leetcode.com/problems/sudoku-solver/
00
00
​
​
N Queens
https://leetcode.com/problems/n-queens/
00
00
​
​
Unique Paths Iii
https://leetcode.com/problems/unique-paths-iii/
00
00
​
​
Find Maximum Number Possible By Doing At Most K Swaps
https://www.geeksforgeeks.org/find-maximum-number-possible-by-doing-at-most-k-swaps/
00
00
​
​
Partition Set K Subsets Equal Sum
https://www.geeksforgeeks.org/partition-set-k-subsets-equal-sum/
00
00
​
​
Tug Of War
https://www.geeksforgeeks.org/tug-of-war/
00
00
​
​
Find Paths From Corner Cell To Middle Cell In Maze
https://www.geeksforgeeks.org/find-paths-from-corner-cell-to-middle-cell-in-maze/
00
00
​
​
Solving Cryptarithmetic Puzzles Backtracking 8
https://www.geeksforgeeks.org/solving-cryptarithmetic-puzzles-backtracking-8/
00
00
​
​
Print Palindromic Partitions String
https://www.geeksforgeeks.org/print-palindromic-partitions-string/
00
00
​
​
Range Sum Query Immutable
https://leetcode.com/problems/range-sum-query-immutable/
00
00
​
​
Range Sum Query Mutable
https://leetcode.com/problems/range-sum-query-mutable/
00
00
​
​
Count Of Smaller Numbers After Self
https://leetcode.com/problems/count-of-smaller-numbers-after-self/
00
00
​
​
Count Of Range Sum
https://leetcode.com/problems/count-of-range-sum/
00
00
​
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