Day-13 (Solution)
Sum of Subarray Ranges
#2104
Algorithm: Stack
Solution:https://gist.github.com/lavakush-m-tiwari/b521584317da1a4324d1185fae766434
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Sum of Subarray Ranges
#2104
Algorithm: Stack
Solution:https://gist.github.com/lavakush-m-tiwari/b521584317da1a4324d1185fae766434
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LeetCode
Sum of Subarray Ranges - LeetCode
Can you solve this real interview question? Sum of Subarray Ranges - You are given an integer array nums. The range of a subarray of nums is the difference between the largest and smallest element in the subarray.
Return the sum of all subarray ranges of…
Return the sum of all subarray ranges of…
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-15
Smallest K-Length Subsequence With Occurrences of a Letter
#2030
Algorithm: Stack, String
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Smallest K-Length Subsequence With Occurrences of a Letter
#2030
Algorithm: Stack, String
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LeetCode
Smallest K-Length Subsequence With Occurrences of a Letter - LeetCode
Can you solve this real interview question? Smallest K-Length Subsequence With Occurrences of a Letter - You are given a string s, an integer k, a letter letter, and an integer repetition.
Return the lexicographically smallest subsequence of s of length…
Return the lexicographically smallest subsequence of s of length…
Day-15 (Solution)
Smallest K-Length Subsequence With Occurrences of a Letter
#2030
Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/0f5a35e495382236d94c79e372487256
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Smallest K-Length Subsequence With Occurrences of a Letter
#2030
Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/0f5a35e495382236d94c79e372487256
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LeetCode
Smallest K-Length Subsequence With Occurrences of a Letter - LeetCode
Can you solve this real interview question? Smallest K-Length Subsequence With Occurrences of a Letter - You are given a string s, an integer k, a letter letter, and an integer repetition.
Return the lexicographically smallest subsequence of s of length…
Return the lexicographically smallest subsequence of s of length…
Day-16
Remove All Adjacent Duplicates in String II
#1209
Algorithm: Stack, String
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Remove All Adjacent Duplicates in String II
#1209
Algorithm: Stack, String
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LeetCode
Remove All Adjacent Duplicates in String II - LeetCode
Can you solve this real interview question? Remove All Adjacent Duplicates in String II - You are given a string s and an integer k, a k duplicate removal consists of choosing k adjacent and equal letters from s and removing them, causing the left and the…
Day-16 (Solution)
Remove All Adjacent Duplicates in String II
#1209
Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/5025fc763fae44adaaedeff3d1ed0fe6
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Remove All Adjacent Duplicates in String II
#1209
Algorithm: Stack, String
Solution: https://gist.github.com/lavakush-m-tiwari/5025fc763fae44adaaedeff3d1ed0fe6
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LeetCode
Remove All Adjacent Duplicates in String II - LeetCode
Can you solve this real interview question? Remove All Adjacent Duplicates in String II - You are given a string s and an integer k, a k duplicate removal consists of choosing k adjacent and equal letters from s and removing them, causing the left and the…
Day-17
Next Greater Element II
#503
Algorithm: Stack, Array
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Next Greater Element II
#503
Algorithm: Stack, Array
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LeetCode
Next Greater Element II - LeetCode
Can you solve this real interview question? Next Greater Element II - Given a circular integer array nums (i.e., the next element of nums[nums.length - 1] is nums[0]), return the next greater number for every element in nums.
The next greater number of a…
The next greater number of a…
Hello everyone.
I hope the practice questions have been helpful for your practice and preparation for upcoming interview.
This month we will focus on LinkedList :)
Have fun!
I hope the practice questions have been helpful for your practice and preparation for upcoming interview.
This month we will focus on LinkedList :)
Have fun!
Day-17 (Solution)
Next Greater Element II
#503
Algorithm: Stack, Array
Solution: https://gist.github.com/lavakush-m-tiwari/deb18f05fab5805d6f871fbf2c919ed6
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Next Greater Element II
#503
Algorithm: Stack, Array
Solution: https://gist.github.com/lavakush-m-tiwari/deb18f05fab5805d6f871fbf2c919ed6
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LeetCode
Next Greater Element II - LeetCode
Can you solve this real interview question? Next Greater Element II - Given a circular integer array nums (i.e., the next element of nums[nums.length - 1] is nums[0]), return the next greater number for every element in nums.
The next greater number of a…
The next greater number of a…
Day-1
Middle of the Linked List
#876
Algorithm: linkedList, two pointer
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Middle of the Linked List
#876
Algorithm: linkedList, two pointer
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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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Middle of the Linked List
#876
Algorithm: linkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/7ecc88a12491a449f887b5f751b4fd4a
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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…
If there are two middle nodes, return the second middle node.
Example 1:
[https://assets.leet…
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-3
Reverse Linked List
#206
Algorithm: Linked List, Recursion
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Reverse Linked List
#206
Algorithm: Linked List, Recursion
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LeetCode
Reverse Linked List - LeetCode
Can you solve this real interview question? Reverse Linked List - Given the head of a singly linked list, reverse the list, and return the reversed list.
Example 1:
[https://assets.leetcode.com/uploads/2021/02/19/rev1ex1.jpg]
Input: head = [1,2,3,4…
Example 1:
[https://assets.leetcode.com/uploads/2021/02/19/rev1ex1.jpg]
Input: head = [1,2,3,4…
Day-3 (Solution)
Reverse Linked List
#206
Algorithm: Linked List, Recursion
Solution: https://gist.github.com/lavakush-m-tiwari/50a56ed4395866baf3c0709464c38baa
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Reverse Linked List
#206
Algorithm: Linked List, Recursion
Solution: https://gist.github.com/lavakush-m-tiwari/50a56ed4395866baf3c0709464c38baa
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LeetCode
Reverse Linked List - LeetCode
Can you solve this real interview question? Reverse Linked List - Given the head of a singly linked list, reverse the list, and return the reversed list.
Example 1:
[https://assets.leetcode.com/uploads/2021/02/19/rev1ex1.jpg]
Input: head = [1,2,3,4…
Example 1:
[https://assets.leetcode.com/uploads/2021/02/19/rev1ex1.jpg]
Input: head = [1,2,3,4…
Day-4
Remove Nth Node From End of List
#19
Algorithm: linkedList, two pointer
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Remove Nth Node From End of List
#19
Algorithm: linkedList, two pointer
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LeetCode
Remove Nth Node From End of List - LeetCode
Can you solve this real interview question? Remove Nth Node From End of List - Given the head of a linked list, remove the nth node from the end of the list and return its head.
Example 1:
[https://assets.leetcode.com/uploads/2020/10/03/remove_ex1.jpg]…
Example 1:
[https://assets.leetcode.com/uploads/2020/10/03/remove_ex1.jpg]…
Day-4 (Solution)
Remove Nth Node From End of List
#19
Algorithm: linkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/4993f2214140fb9177281f482d30905a
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Remove Nth Node From End of List
#19
Algorithm: linkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/4993f2214140fb9177281f482d30905a
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LeetCode
Remove Nth Node From End of List - LeetCode
Can you solve this real interview question? Remove Nth Node From End of List - Given the head of a linked list, remove the nth node from the end of the list and return its head.
Example 1:
[https://assets.leetcode.com/uploads/2020/10/03/remove_ex1.jpg]…
Example 1:
[https://assets.leetcode.com/uploads/2020/10/03/remove_ex1.jpg]…
Day-5
Reverse Linked List II
#92
Algorithm: linkedList
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Reverse Linked List II
#92
Algorithm: linkedList
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LeetCode
Reverse Linked List II - LeetCode
Can you solve this real interview question? Reverse Linked List II - Given the head of a singly linked list and two integers left and right where left <= right, reverse the nodes of the list from position left to position right, and return the reversed list.…
Day-5 (Solution)
Reverse Linked List II
#92
Algorithm: linkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/6e735181779b6ec01e1339f163596630
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Please try the problem yourself and watch the video to learn the Algorithm 🙂
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Reverse Linked List II
#92
Algorithm: linkedList, two pointer
Solution: https://gist.github.com/lavakush-m-tiwari/6e735181779b6ec01e1339f163596630
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LeetCode
Reverse Linked List II - LeetCode
Can you solve this real interview question? Reverse Linked List II - Given the head of a singly linked list and two integers left and right where left <= right, reverse the nodes of the list from position left to position right, and return the reversed list.…
Day-6
Add Two Numbers
#2
Algorithm: LinkedList, Math, Recursion
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Add Two Numbers
#2
Algorithm: LinkedList, Math, Recursion
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LeetCode
Add Two Numbers - LeetCode
Can you solve this real interview question? Add Two Numbers - You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order, and each of their nodes contains a single digit. Add the two numbers and…