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Techdose
Day-25
Find All Duplicates in an Array

Leetcode #442

Algorithm: HashTable

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #adobe2 #amazon5#microsoft2 #google3
LeetCode
Find All Duplicates in an Array - LeetCode
Can you solve this real interview question? Find All Duplicates in an Array - Given an integer array nums of length n where all the integers of nums are in the range [1, n] and each integer appears at most twice, return an array of all the integers that appears…
1.85K views
Techdose
Day-25(Solution):
Find All Duplicates in an Array

Leetcode #540

Algorithm: HashTable
Solution: https://gist.github.com/lavakush-m-tiwari/9b5df48120019aa713b0d19c00919c2e

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #adobe2 #amazon5 #microsoft2 #google3
LeetCode
Find All Duplicates in an Array - LeetCode
Can you solve this real interview question? Find All Duplicates in an Array - Given an integer array nums of length n where all the integers of nums are in the range [1, n] and each integer appears at most twice, return an array of all the integers that appears…
2.07K viewsedited  
Techdose
Day-26
Snapshot Array

Leetcode #1146

Algorithm: HashTable

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #amazon3 #microsoft2 #google39
LeetCode
Snapshot Array - LeetCode
Can you solve this real interview question? Snapshot Array - Implement a SnapshotArray that supports the following interface:

* SnapshotArray(int length) initializes an array-like data structure with the given length. Initially, each element equals 0.
…
2.38K viewsedited  
Techdose
Day-2
Next Greater Element I

Leetcode #496

Algorithm: Stack, HashTable, Monotonic Stack
Related Video: https://www.youtube.com/watch?v=sDKpIO2HGq0

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LeetCode
Next Greater Element I - LeetCode
Can you solve this real interview question? Next Greater Element I - The next greater element of some element x in an array is the first greater element that is to the right of x in the same array.

You are given two distinct 0-indexed integer arrays nums1…
1.76K views
Techdose
Day-2(Solution)
Next Greater Element I

Leetcode #20

Algorithm: Stack
Solution: https://gist.github.com/lavakush-m-tiwari/ae64d96579eb57f3ffb09d11d5356b18
Related Video: https://www.youtube.com/watch?v=sDKpIO2HGq0

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #facebook9 #amazon8 #microsoft2 #hotstar2
LeetCode
Next Greater Element I - LeetCode
Can you solve this real interview question? Next Greater Element I - The next greater element of some element x in an array is the first greater element that is to the right of x in the same array.

You are given two distinct 0-indexed integer arrays nums1…
1.66K views
Techdose
Day-12
Minimum Add to Make Parentheses Valid

#921

Algorithm: Stack, String, Greedy

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LeetCode
Minimum Add to Make Parentheses Valid - LeetCode
Can you solve this real interview question? Minimum Add to Make Parentheses Valid - A parentheses string is valid if and only if:

* It is the empty string,
* It can be written as AB (A concatenated with B), where A and B are valid strings, or
* It can…
1.44K viewsedited  
Techdose
Day-12 (Solution)
Minimum Add to Make Parentheses Valid

#921

Algorithm: Stack, String, Greedy
Solution:https://gist.github.com/lavakush-m-tiwari/6650c3ad786b363752e6bde98fa5564a

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #facebook108 #amazon2 #microsoft2
LeetCode
Minimum Add to Make Parentheses Valid - LeetCode
Can you solve this real interview question? Minimum Add to Make Parentheses Valid - A parentheses string is valid if and only if:

* It is the empty string,
* It can be written as AB (A concatenated with B), where A and B are valid strings, or
* It can…
1.37K views
Techdose
Day-14
Remove Duplicate Letters

#316

Algorithm: Stack, String

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1.44K views
Techdose
Day-14 (Solution)
Remove Duplicate Letters

#316

Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/1d7f382049b97d46dde74db0fcb04c77

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1.4K views
Techdose
Day-1
Middle of the Linked List

#876

Algorithm: linkedList, two pointer

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1.66K viewsedited  
Techdose
Day-1 (Solution))
Middle of the Linked List

#876

Algorithm: linkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/7ecc88a12491a449f887b5f751b4fd4a

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #Facebook2 #amazon4 #google3 #microsoft2 #apple4
LeetCode
Middle of the Linked List - LeetCode
Can you solve this real interview question? Middle of the Linked List - Given the head of a singly linked list, return the middle node of the linked list.

If there are two middle nodes, return the second middle node.

 

Example 1:

[https://assets.leet…
1.6K viewsedited  
Techdose
Day-9
Partition List

#86

Algorithm: LinkedList, Two Pointer

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LeetCode
Partition List - LeetCode
Can you solve this real interview question? Partition List - Given the head of a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.

You should preserve the original relative order of the…
1.71K views
Techdose
Day-9 (Solution)
Partition List

#86

Algorithm: LinkedList, Two Pointer
Solution: https://gist.github.com/lavakush-m-tiwari/02fceae370cbbb8701671ac7ded27fcd

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #amazon2 #microsoft2 #apple2
LeetCode
Partition List - LeetCode
Can you solve this real interview question? Partition List - Given the head of a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.

You should preserve the original relative order of the…
1.7K views
Techdose
Day-17
Linked List Cycle II

#141

Algorithm: LinkedList, two pointer

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LeetCode
Linked List Cycle II - LeetCode
Can you solve this real interview question? Linked List Cycle II - Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null.

There is a cycle in a linked list if there is some node in the list that can be…
2.68K views
Techdose
Day-17 (Solution)
Linked List Cycle II

#141

Algorithm: LinkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/50c5058e8740436d2e262d6e79cd6cea

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#techdose #28DaysOfArray #interviewpreparation #arrays #dsa #MaxFreqLast6Months #amazon5 #microsoft2
LeetCode
Linked List Cycle II - LeetCode
Can you solve this real interview question? Linked List Cycle II - Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null.

There is a cycle in a linked list if there is some node in the list that can be…
2.98K views