Day-22
Shortest Unsorted Continuous Subarray
Leetcode #581
Algorithm: two pointer, Greedy, Sorting
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Shortest Unsorted Continuous Subarray
Leetcode #581
Algorithm: two pointer, Greedy, Sorting
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LeetCode
Shortest Unsorted Continuous Subarray - LeetCode
Can you solve this real interview question? Shortest Unsorted Continuous Subarray - Given an integer array nums, you need to find one continuous subarray such that if you only sort this subarray in non-decreasing order, then the whole array will be sorted…
Day-22(Solution)
Shortest Unsorted Continuous Subarray
Leetcode #581
Algorithm: two pointer, Greedy, Sorting
Solution: https://gist.github.com/lavakush-m-tiwari/32b0423cc25aeca27465859409d22824
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Shortest Unsorted Continuous Subarray
Leetcode #581
Algorithm: two pointer, Greedy, Sorting
Solution: https://gist.github.com/lavakush-m-tiwari/32b0423cc25aeca27465859409d22824
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LeetCode
Shortest Unsorted Continuous Subarray - LeetCode
Can you solve this real interview question? Shortest Unsorted Continuous Subarray - Given an integer array nums, you need to find one continuous subarray such that if you only sort this subarray in non-decreasing order, then the whole array will be sorted…
Day-12
Minimum Add to Make Parentheses Valid
#921
Algorithm: Stack, String, Greedy
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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…
* 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…
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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Minimum Add to Make Parentheses Valid
#921
Algorithm: Stack, String, Greedy
Solution:https://gist.github.com/lavakush-m-tiwari/6650c3ad786b363752e6bde98fa5564a
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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…
* 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…
Day-14
Remove Duplicate Letters
#316
Algorithm: Stack, String
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Remove Duplicate Letters
#316
Algorithm: Stack, String
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Day-14 (Solution)
Remove Duplicate Letters
#316
Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/1d7f382049b97d46dde74db0fcb04c77
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Remove Duplicate Letters
#316
Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/1d7f382049b97d46dde74db0fcb04c77
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Day-2
Delete Node in a Linked List
#237
Algorithm: linkedList
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Delete Node in a Linked List
#237
Algorithm: linkedList
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LeetCode
Delete Node in a Linked List - LeetCode
Can you solve this real interview question? Delete Node in a Linked List - There is a singly-linked list head and we want to delete a node node in it.
You are given the node to be deleted node. You will not be given access to the first node of head.
All…
You are given the node to be deleted node. You will not be given access to the first node of head.
All…
Day-2 (Solution)
Delete Node in a Linked List
#237
Algorithm: linkedList
Solution: https://gist.github.com/lavakush-m-tiwari/9543235d209163ce605e84bc9800be62
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Delete Node in a Linked List
#237
Algorithm: linkedList
Solution: https://gist.github.com/lavakush-m-tiwari/9543235d209163ce605e84bc9800be62
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LeetCode
Delete Node in a Linked List - LeetCode
Can you solve this real interview question? Delete Node in a Linked List - There is a singly-linked list head and we want to delete a node node in it.
You are given the node to be deleted node. You will not be given access to the first node of head.
All…
You are given the node to be deleted node. You will not be given access to the first node of head.
All…
Day-9
Partition List
#86
Algorithm: LinkedList, Two Pointer
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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…
You should preserve the original relative order of the…
Day-9 (Solution)
Partition List
#86
Algorithm: LinkedList, Two Pointer
Solution: https://gist.github.com/lavakush-m-tiwari/02fceae370cbbb8701671ac7ded27fcd
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Partition List
#86
Algorithm: LinkedList, Two Pointer
Solution: https://gist.github.com/lavakush-m-tiwari/02fceae370cbbb8701671ac7ded27fcd
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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…
You should preserve the original relative order of the…
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-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:…