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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.
SQL test on Select query, insert, create
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
posted on 18 Jun 2024
Medium level problem,
posted on 26 Jun 2024
I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.
45 min apps and technical question
45 min coding round you can refer net for first 15 min
I applied via Campus Placement and was interviewed in Jun 2024. There were 5 interview rounds.
It consists of Computer Science subjects and 2 to 3 apptitudee majorly os and c++
3 question s are provided and they are from strings 2d array and graph
A doubly linked list is a data structure where each node contains a reference to the next and previous nodes.
Nodes have two pointers: one to the next node and one to the previous node.
Insertions and deletions can be done efficiently at both ends of the list.
Traversal can be done in both directions.
Example: DoublyLinkedListNode { data, prev, next }
It is easy and you can clear it.
It was moderate and hard questions
I appeared for an interview in Jul 2024.
Contains 2 coding questions
Print a matrix in spiral order
Start by printing the first row from left to right
Then print the last column from top to bottom
Continue in a spiral pattern until all elements are printed
I applied via Campus Placement and was interviewed in Sep 2024. There were 3 interview rounds.
Coding has been asked
based on 6 reviews
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