Day-10
Linked List Cycle
#141
Algorithm: LinkedList, Two Pointer , HashTable
Solution: https://gist.github.com/lavakush-m-tiwari/932ca2d6e72c93708e59a9417444ea94
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Linked List Cycle
#141
Algorithm: LinkedList, Two Pointer , HashTable
Solution: https://gist.github.com/lavakush-m-tiwari/932ca2d6e72c93708e59a9417444ea94
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LeetCode
Linked List Cycle - LeetCode
Can you solve this real interview question? Linked List Cycle - Given head, the head of a linked list, determine if the linked list has a cycle in it.
There is a cycle in a linked list if there is some node in the list that can be reached again by continuously…
There is a cycle in a linked list if there is some node in the list that can be reached again by continuously…
Day-11
LRU Cache
#146
Algorithm: LinkedList, Two Pointer
Related Video: https://www.youtube.com/watch?v=akFRa58Svug
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LRU Cache
#146
Algorithm: LinkedList, Two Pointer
Related Video: https://www.youtube.com/watch?v=akFRa58Svug
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LeetCode
LRU Cache - LeetCode
Can you solve this real interview question? LRU Cache - Design a data structure that follows the constraints of a Least Recently Used (LRU) cache [https://en.wikipedia.org/wiki/Cache_replacement_policies#LRU].
Implement the LRUCache class:
* LRUCache(int…
Implement the LRUCache class:
* LRUCache(int…
Day-11 (Solution)
LRU Cache
#146
Algorithm: LinkedList, Two Pointer
Related Video: https://www.youtube.com/watch?v=akFRa58Svug
Solution: https://gist.github.com/lavakush-m-tiwari/efe39f454db09d9914da673cbbe88e74
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LRU Cache
#146
Algorithm: LinkedList, Two Pointer
Related Video: https://www.youtube.com/watch?v=akFRa58Svug
Solution: https://gist.github.com/lavakush-m-tiwari/efe39f454db09d9914da673cbbe88e74
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LeetCode
LRU Cache - LeetCode
Can you solve this real interview question? LRU Cache - Design a data structure that follows the constraints of a Least Recently Used (LRU) cache [https://en.wikipedia.org/wiki/Cache_replacement_policies#LRU].
Implement the LRUCache class:
* LRUCache(int…
Implement the LRUCache class:
* LRUCache(int…
Day-12
Design Browser History
#1472
Algorithm: LinkedList, stack, Design , Doubly linked li
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Design Browser History
#1472
Algorithm: LinkedList, stack, Design , Doubly linked li
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LeetCode
Design Browser History - LeetCode
Can you solve this real interview question? Design Browser History - You have a browser of one tab where you start on the homepage and you can visit another url, get back in the history number of steps or move forward in the history number of steps.
Implement…
Implement…
Day-12 (Solution)
Design Browser History
#1472
Algorithm: LinkedList, stack, Design , Doubly linked list
Solution: https://gist.github.com/lavakush-m-tiwari/2d84f1e74d873435972597440f17c124
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Design Browser History
#1472
Algorithm: LinkedList, stack, Design , Doubly linked list
Solution: https://gist.github.com/lavakush-m-tiwari/2d84f1e74d873435972597440f17c124
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LeetCode
Design Browser History - LeetCode
Can you solve this real interview question? Design Browser History - You have a browser of one tab where you start on the homepage and you can visit another url, get back in the history number of steps or move forward in the history number of steps.
Implement…
Implement…
Day-13
Rotate List
#61
Algorithm: LinkedList, two pointer
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Rotate List
#61
Algorithm: LinkedList, two pointer
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LeetCode
Rotate List - LeetCode
Can you solve this real interview question? Rotate List - Given the head of a linked list, rotate the list to the right by k places.
Example 1:
[https://assets.leetcode.com/uploads/2020/11/13/rotate1.jpg]
Input: head = [1,2,3,4,5], k = 2
Output: [4…
Example 1:
[https://assets.leetcode.com/uploads/2020/11/13/rotate1.jpg]
Input: head = [1,2,3,4,5], k = 2
Output: [4…
Day-13 (Solution)
Rotate List
#61
Algorithm: LinkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/aa46ee10459e2d7daf5b8bb634cf9d88
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Rotate List
#61
Algorithm: LinkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/aa46ee10459e2d7daf5b8bb634cf9d88
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LeetCode
Rotate List - LeetCode
Can you solve this real interview question? Rotate List - Given the head of a linked list, rotate the list to the right by k places.
Example 1:
[https://assets.leetcode.com/uploads/2020/11/13/rotate1.jpg]
Input: head = [1,2,3,4,5], k = 2
Output: [4…
Example 1:
[https://assets.leetcode.com/uploads/2020/11/13/rotate1.jpg]
Input: head = [1,2,3,4,5], k = 2
Output: [4…
Day-14
Split Linked List in Parts
#725
Algorithm: LinkedList, two pointer
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Split Linked List in Parts
#725
Algorithm: LinkedList, two pointer
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LeetCode
Split Linked List in Parts - LeetCode
Can you solve this real interview question? Split Linked List in Parts - Given the head of a singly linked list and an integer k, split the linked list into k consecutive linked list parts.
The length of each part should be as equal as possible: no two parts…
The length of each part should be as equal as possible: no two parts…
Day-14(Solution)
Split Linked List in Parts
#725
Algorithm: LinkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/5941bf2649c0738d0d059b3d3e0d308b
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Split Linked List in Parts
#725
Algorithm: LinkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/5941bf2649c0738d0d059b3d3e0d308b
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LeetCode
Split Linked List in Parts - LeetCode
Can you solve this real interview question? Split Linked List in Parts - Given the head of a singly linked list and an integer k, split the linked list into k consecutive linked list parts.
The length of each part should be as equal as possible: no two parts…
The length of each part should be as equal as possible: no two parts…
Day-15
Remove Duplicates from Sorted List II
#83
Algorithm: LinkedList, two pointer
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Remove Duplicates from Sorted List II
#83
Algorithm: LinkedList, two pointer
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LeetCode
Remove Duplicates from Sorted List II - LeetCode
Can you solve this real interview question? Remove Duplicates from Sorted List II - Given the head of a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Return the linked list sorted as…
Day-15 (Solution)
Remove Duplicates from Sorted List II
#83
Algorithm: LinkedList, two pointer
Solution : https://gist.github.com/lavakush-m-tiwari/e843e910ecda1ad1decba061bf7acc9a
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Remove Duplicates from Sorted List II
#83
Algorithm: LinkedList, two pointer
Solution : https://gist.github.com/lavakush-m-tiwari/e843e910ecda1ad1decba061bf7acc9a
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LeetCode
Remove Duplicates from Sorted List II - LeetCode
Can you solve this real interview question? Remove Duplicates from Sorted List II - Given the head of a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Return the linked list sorted as…
Day-16
Odd Even Linked List
Leetcode #328
Algorithm: Binary Search, Divide and Conquer
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Odd Even Linked List
Leetcode #328
Algorithm: Binary Search, Divide and Conquer
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LeetCode
Odd Even Linked List - LeetCode
Can you solve this real interview question? Odd Even Linked List - Given the head of a singly linked list, group all the nodes with odd indices together followed by the nodes with even indices, and return the reordered list.
The first node is considered…
The first node is considered…
Day-16 (Solution)
Odd Even Linked List
Leetcode #328
Algorithm: Binary Search, Divide and Conquer
Solution: https://gist.github.com/lavakush-m-tiwari/3a3d72bce0715986d89677ac36d2da09
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Odd Even Linked List
Leetcode #328
Algorithm: Binary Search, Divide and Conquer
Solution: https://gist.github.com/lavakush-m-tiwari/3a3d72bce0715986d89677ac36d2da09
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LeetCode
Odd Even Linked List - LeetCode
Can you solve this real interview question? Odd Even Linked List - Given the head of a singly linked list, group all the nodes with odd indices together followed by the nodes with even indices, and return the reordered list.
The first node is considered…
The first node is considered…
Day-17
Linked List Cycle II
#141
Algorithm: LinkedList, two pointer
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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…
There is a cycle in a linked list if there is some node in the list that can be…
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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Linked List Cycle II
#141
Algorithm: LinkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/50c5058e8740436d2e262d6e79cd6cea
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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…
There is a cycle in a linked list if there is some node in the list that can be…
Day-18
Design Twitter
#355
Algorithm: LinkedList, hashtable, heap
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Design Twitter
#355
Algorithm: LinkedList, hashtable, heap
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LeetCode
Design Twitter - LeetCode
Can you solve this real interview question? Design Twitter - Design a simplified version of Twitter where users can post tweets, follow/unfollow another user, and is able to see the 10 most recent tweets in the user's news feed.
Implement the Twitter class:…
Implement the Twitter class:…
Day-18 (Solution)
Design Twitter
#355
Algorithm: LinkedList, hashtable, heap
Solution: https://gist.github.com/lavakush-m-tiwari/e4e83f88d7707bae316babf69496c81f
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Design Twitter
#355
Algorithm: LinkedList, hashtable, heap
Solution: https://gist.github.com/lavakush-m-tiwari/e4e83f88d7707bae316babf69496c81f
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LeetCode
Design Twitter - LeetCode
Can you solve this real interview question? Design Twitter - Design a simplified version of Twitter where users can post tweets, follow/unfollow another user, and is able to see the 10 most recent tweets in the user's news feed.
Implement the Twitter class:…
Implement the Twitter class:…
Day-19
Flatten a Multilevel Doubly Linked List
#430
Algorithm: LinkedList, doubly linked list, dfs
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Flatten a Multilevel Doubly Linked List
#430
Algorithm: LinkedList, doubly linked list, dfs
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LeetCode
Flatten a Multilevel Doubly Linked List - LeetCode
Can you solve this real interview question? Flatten a Multilevel Doubly Linked List - You are given a doubly linked list, which contains nodes that have a next pointer, a previous pointer, and an additional child pointer. This child pointer may or may not…
Day-19 (Solution)
Flatten a Multilevel Doubly Linked List
#430
Algorithm: LinkedList, doubly linked list, dfs
Solution: https://gist.github.com/lavakush-m-tiwari/250f554982b47f60dde6a89dae56ee22
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Flatten a Multilevel Doubly Linked List
#430
Algorithm: LinkedList, doubly linked list, dfs
Solution: https://gist.github.com/lavakush-m-tiwari/250f554982b47f60dde6a89dae56ee22
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LeetCode
Flatten a Multilevel Doubly Linked List - LeetCode
Can you solve this real interview question? Flatten a Multilevel Doubly Linked List - You are given a doubly linked list, which contains nodes that have a next pointer, a previous pointer, and an additional child pointer. This child pointer may or may not…
Day-20
All O`one Data Structure
#432
Algorithm: LinkedList, doubly linked list, desing Hashtable
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All O`one Data Structure
#432
Algorithm: LinkedList, doubly linked list, desing Hashtable
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LeetCode
All O`one Data Structure - LeetCode
Can you solve this real interview question? All O`one Data Structure - Design a data structure to store the strings' count with the ability to return the strings with minimum and maximum counts.
Implement the AllOne class:
* AllOne() Initializes the object…
Implement the AllOne class:
* AllOne() Initializes the object…