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AddTwoNumbersAsLists.java
AddTwoNumbersAsLists.java
 
 
Alone in couple.java
Alone in couple.java
 
 
Array to BST.java
Array to BST.java
 
 
BalancedBrackets.java
BalancedBrackets.java
 
 
BinarySwap.java
BinarySwap.java
 
 
BinaryTreeToDLL.java
BinaryTreeToDLL.java
 
 
BobAndGCD.java
BobAndGCD.java
 
 
Boolean String Value.java
Boolean String Value.java
 
 
Characters and frequencies.py
Characters and frequencies.py
 
 
CheckForBST.java
CheckForBST.java
 
 
CheckIfSubtree.java
CheckIfSubtree.java
 
 
CheckIfTreeIsIsomorphic.java
CheckIfTreeIsIsomorphic.java
 
 
CheckIfTwoBinaryTreesAreIdentical.java
CheckIfTwoBinaryTreesAreIdentical.java
 
 
Connect Nodes at Same Level.java
Connect Nodes at Same Level.java
 
 
CountDistinctElementsInEveryWindow.java
CountDistinctElementsInEveryWindow.java
 
 
CountStrings.java
CountStrings.java
 
 
CountSubArray.java
CountSubArray.java
 
 
CountTriplets.java
CountTriplets.java
 
 
CreatingTreeFromInorderPreorder.cpp
CreatingTreeFromInorderPreorder.cpp
 
 
DecodeTheString.java
DecodeTheString.java
 
 
Dijkstra’s shortest path algorithm.java
Dijkstra’s shortest path algorithm.java
 
 
EvaluationPostfix.java
EvaluationPostfix.java
 
 
FindLastDigit.java
FindLastDigit.java
 
 
FixingTwoNodesOfBST.java
FixingTwoNodesOfBST.java
 
 
Gopal's stairs.java
Gopal's stairs.java
 
 
HeapPriorityQueueImplemaintation.java
HeapPriorityQueueImplemaintation.java
 
 
InfixToPostfix.java
InfixToPostfix.java
 
 
InplaceRotation90.java
InplaceRotation90.java
 
 
JoiningElementsAtSameLevel.java
JoiningElementsAtSameLevel.java
 
 
Kadane'sAlgorithm.java
Kadane'sAlgorithm.java
 
 
KilljeeAndSimpleProblem.java
KilljeeAndSimpleProblem.java
 
 
KsmallestElement.java
KsmallestElement.java
 
 
LeadersInArray.java
LeadersInArray.java
 
 
LeftRotation.java
LeftRotation.java
 
 
LeftViewOfBinaryTree.java
LeftViewOfBinaryTree.java
 
 
LevelOrderSpiralForm.java
LevelOrderSpiralForm.java
 
 
LinkedListOf0s,1sand2s,SortIt.java
LinkedListOf0s,1sand2s,SortIt.java
 
 
LongestCommonPrefix.java
LongestCommonPrefix.java
 
 
LongestPalindromicSubstring.java
LongestPalindromicSubstring.java
 
 
LongestPalindromicSubstringII.java
LongestPalindromicSubstringII.java
 
 
LongestSubstringWithoutRepeatingCharacters.java
LongestSubstringWithoutRepeatingCharacters.java
 
 
LowestCommonAncestor.docx
LowestCommonAncestor.docx
 
 
LowestCommonAncestor.java
LowestCommonAncestor.java
 
 
MagicNumber
MagicNumber
 
 
Maximum Difference.java
Maximum Difference.java
 
 
Merge K Sorted Linked List.cpp
Merge K Sorted Linked List.cpp
 
 
MergeSort.java
MergeSort.java
 
 
MinimumDistinctIds.java
MinimumDistinctIds.java
 
 
Nearest multiple of 10.java
Nearest multiple of 10.java
 
 
NextLargestElement.java
NextLargestElement.java
 
 
Non Repeating Character.py
Non Repeating Character.py
 
 
NumberGame.java
NumberGame.java
 
 
PalindromeList.java
PalindromeList.java
 
 
PermutationsOfAGivenString.java
PermutationsOfAGivenString.java
 
 
PopUpOrientation.java
PopUpOrientation.java
 
 
QueueUsingTwoStacks.java
QueueUsingTwoStacks.java
 
 
README.md
README.md
 
 
ReUnionsOf1.java
ReUnionsOf1.java
 
 
Remove All Duplicates From A Given String.java
Remove All Duplicates From A Given String.java
 
 
RemoveDuplicatesFromSortedListII.java
RemoveDuplicatesFromSortedListII.java
 
 
ReorderList.java
ReorderList.java
 
 
Reverse a Linked List in groups of given size.java
Reverse a Linked List in groups of given size.java
 
 
Reverse words in a given string.java
Reverse words in a given string.java
 
 
Reverse.java
Reverse.java
 
 
ReverseWordsInString .java
ReverseWordsInString .java
 
 
RootToLeafPathSum.java
RootToLeafPathSum.java
 
 
RotateAndSpeakGame.java
RotateAndSpeakGame.java
 
 
ScalesMan.java
ScalesMan.java
 
 
SchoolPlayer.java
SchoolPlayer.java
 
 
SearchingInRotatedAndSortedArray.java
SearchingInRotatedAndSortedArray.java
 
 
SecondMostRepeatedString.java
SecondMostRepeatedString.java
 
 
SegregateEvenOddNodesLinkedList.java
SegregateEvenOddNodesLinkedList.java
 
 
ShubhamAndXor.java
ShubhamAndXor.java
 
 
SortedArrays.java
SortedArrays.java
 
 
SpecialArray.java
SpecialArray.java
 
 
StackUsing TwoQueues.java
StackUsing TwoQueues.java
 
 
Stickler Thief.java
Stickler Thief.java
 
 
Stock span problem.java
Stock span problem.java
 
 
SubStringGame.py
SubStringGame.py
 
 
TransformToSumTree.java
TransformToSumTree.java
 
 
TwoDArrayDS.java
TwoDArrayDS.java
 
 
WatchingVideo.java
WatchingVideo.java
 
 
n'th node from end of linked list.java
n'th node from end of linked list.java
 
 

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CompetitiveCoding-Hard

Hard category problems

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Hard category problems

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algorithms hackerrank hackerearth algorithm-challenges hackerrank-solutions algorithms-datastructures hackerrank-algorithms-solutions

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