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I applied via Recruitment Consultant and was interviewed before Oct 2020. There were 3 interview rounds.
posted on 6 Nov 2015
A pointer to pointer is a variable that stores the memory address of another pointer variable.
It is used to create dynamic data structures like linked lists and trees.
It allows multiple levels of indirection.
It is denoted by ** in C and C++.
Example: int **ptr;
Example: ptr = &p; where p is a pointer variable.
posted on 2 Jul 2024
Main principles of Java include object-oriented programming, platform independence, and automatic memory management.
Object-oriented programming: Java is based on classes and objects, allowing for encapsulation, inheritance, and polymorphism.
Platform independence: Java code can run on any platform that has a Java Virtual Machine (JVM) installed.
Automatic memory management: Java uses garbage collection to automatically m
The == operator compares the memory addresses of two objects, while the equals method compares the content of two objects.
The == operator is used to compare the memory addresses of two objects in Java.
The equals method is used to compare the content of two objects in Java.
Example: String str1 = new String("hello"); String str2 = new String("hello"); str1 == str2 will return false, but str1.equals(str2) will return true
I applied via Naukri.com and was interviewed in Mar 2022. There was 1 interview round.
=== compares value and type, while == only compares value
=== is stricter than == in type checking
=== returns true only if both operands are of the same type and have the same value
== performs type coercion, which can lead to unexpected results
For example, '5' == 5 returns true, but '5' === 5 returns false
posted on 20 Mar 2024
Data warehousing is the process of collecting, storing, and managing data from various sources for analysis and reporting.
Data warehousing involves extracting data from multiple sources
Data is then transformed and loaded into a central repository
The data can be used for analysis, reporting, and decision-making
Examples include data warehouses used by businesses to analyze sales data
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