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Quorum Software
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I applied via Company Website and was interviewed in May 2024. There were 2 interview rounds.
Evaluate your potential to succeed in certain area by looking at your strength and weakness in particular abilities
Primary key in SQL is a unique identifier for each record in a table.
Primary key ensures each record in a table is unique
Primary key can be a single column or a combination of columns
Primary key is used to establish relationships between tables
A foreign key is a column or a group of columns in a database table that uniquely identifies a record in another table.
A foreign key establishes a relationship between two tables by referencing the primary key of another table.
It ensures referential integrity, meaning that a record in one table cannot be inserted if the corresponding record in the related table does not exist.
Foreign keys help maintain data consistency...
A view in SQL is a virtual table based on the result-set of a SELECT statement.
Views are used to simplify complex queries by storing them as a virtual table.
They can contain data from one or more tables.
Views do not store data themselves, but display data from the tables they are based on.
Views can be used to restrict access to specific columns or rows of a table.
Example: CREATE VIEW vw_employee AS SELECT emp_id, emp_n
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Normal java coding question
Spring IoC (Inversion of Control) is a design pattern where the control of object creation and lifecycle is shifted to a container or framework.
In Spring IoC, objects are created and managed by the Spring container.
It helps in achieving loose coupling between classes.
Dependency Injection is a key feature of Spring IoC, where dependencies of a class are injected by the container.
Example: @Autowired annotation in Spring
The Map interface in Java provides a way to store key-value pairs and retrieve values based on keys.
Different implementations of the Map interface include HashMap, TreeMap, LinkedHashMap, and ConcurrentHashMap.
HashMap provides constant-time performance for basic operations but does not guarantee the order of elements.
TreeMap maintains elements in sorted order based on keys.
LinkedHashMap maintains the insertion order of...
It's about implementing rest apis
posted on 13 Nov 2024
Easy - Medium Leetcode
I applied via LinkedIn and was interviewed in Dec 2023. There was 1 interview round.
A ridesharing service connecting drivers with passengers for convenient and affordable transportation.
Allow users to request rides through a mobile app
Match drivers with passengers based on location and destination
Provide estimated arrival times and fare estimates
Implement a rating system for drivers and passengers
Offer options for shared rides to reduce costs
I was interviewed in Sep 2021.
Round duration - 60 minutes
Round difficulty - Medium
The round was technical round and it was held on google meet around 1 pm
Given an M x N matrix of integers ARR
, your task is to identify the rectangle within the matrix that has the greatest sum of its elements.
The first line of input co...
In this approach, we'll try to consider each rectangle that can be formed using elements of the array. To do this we fix (X1,Y1) coordinates of starting vertex and iterate through the matrix for every pair (X2,Y2) as the coordinates of ending vertex. Now we have a rectangle with coordinates (X1,Y1), (X1,Y2), (X2,Y1) and (X2,Y2).
We'll find the sum of elements within this rectangle and compare it with MAXSUM. ...
Round duration - 60 minutes
Round difficulty - Medium
It was managerial round and took place around 3 pm
You are provided with a string EXP
which represents a valid infix expression. Your task is to convert this given infix expression into a postfix expression.
An i...
We will scan the expression from left to write and if we encounter an operand we will append it to our answer. If we encounter an operator we will pop all the operators with equal or higher precedence and append them to our answer. And push the current operator. In the end, we will empty the stack.
Order of precedence = [ ‘^’, ‘*’ and ‘/’, ‘+’ and ‘-’, ‘(’, ‘)’]
Order of precedence [ link ]
The algorithm will be-
Tip 1 : Java concepts should be strong
Tip 2 : OOPS
Tip 3 : Projects should have scalability
Tip 1 : Projects detail should be short and precise
Tip 2 : Don't fake technical skills
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