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I was interviewed in Jul 2024.
Simplification,profit and loss,some of questions form database
Joins in database are used to combine rows from two or more tables based on a related column between them.
Joins are used to retrieve data from multiple tables based on a related column.
Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;
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I applied via Campus Placement and was interviewed before Nov 2021. There were 2 interview rounds.
A ship is a vessel that floats on water and is propelled by engines or sails.
Ships are designed to displace water and stay afloat.
They are powered by engines or sails, which provide the necessary thrust to move the ship forward.
Ships have various systems for navigation, communication, and safety, such as radar, GPS, radio, and lifeboats.
They can carry cargo, passengers, or both, and are used for transportation, trade, ...
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I applied via Newspaper Ad and was interviewed before Feb 2022. There was 1 interview round.
I applied via Recruitment Consultant and was interviewed in May 2020. There were 3 interview rounds.
Diameter of a binary tree is the longest path between any two leaf nodes.
Calculate the height of left and right subtrees recursively.
Calculate the diameter recursively using the formula max(left_height + right_height + 1, max(left_diameter, right_diameter)).
Return the maximum diameter.
To find interchanged terms from an AP series
Identify the common difference between terms
Swap the positions of adjacent terms
Check if the new series is also an AP
Repeat until no more interchanged terms can be found
Database indexing is a technique to improve the performance of database queries.
Indexing creates a data structure that allows for faster retrieval of data.
Indexes are created on one or more columns of a table.
Queries that use indexed columns can be executed faster.
Indexes can be clustered or non-clustered.
Clustered indexes determine the physical order of data in a table.
Non-clustered indexes create a separate structure...
DHCP is a protocol that assigns IP addresses to devices on a network. DNS is a system that translates domain names to IP addresses.
DHCP assigns IP addresses to devices on a network
DNS translates domain names to IP addresses
DHCP reduces the need for manual IP address configuration
DNS allows users to access websites using domain names instead of IP addresses
I applied via LinkedIn and was interviewed before Apr 2021. There was 1 interview round.
I applied via Internshala and was interviewed before Sep 2021. There were 2 interview rounds.
I applied via Campus Placement and was interviewed before Dec 2020. There were 4 interview rounds.
Design a stack that supports getmin in O(1) time and O(1) space complexities.
Use two stacks, one for storing the actual values and the other for storing the minimum values.
When pushing a new value, check if it is smaller than the current minimum value and push it to the minimum stack if it is.
When popping a value, check if it is the current minimum value and pop it from the minimum stack if it is.
To get the minimum val...
Binary tree traversal is the process of visiting each node in a binary tree exactly once in a specific order.
There are three main types of binary tree traversal: inorder, preorder, and postorder.
Inorder traversal visits the left subtree, then the root, then the right subtree.
Preorder traversal visits the root, then the left subtree, then the right subtree.
Postorder traversal visits the left subtree, then the right subt...
LRU cache is a data structure that stores the most recently used items and discards the least recently used items.
LRU stands for Least Recently Used
It has a fixed size and when the cache is full, the least recently used item is removed to make space for a new item
It uses a combination of a doubly linked list and a hash map to achieve O(1) time complexity for both insertion and deletion
Example: A web browser cache that ...
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