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I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
Implement programs to check array equality, find duplicates, and perform binary search algorithm in Java.
To check if two arrays are equal, compare each element in both arrays.
To find duplicates in an array, use a HashSet to store unique elements and identify duplicates.
For binary search algorithm implementation, ensure the array is sorted and recursively divide the array to find the target element.
Hashing algorithm is a method used to convert data into a fixed-size string of bytes.
Hashing algorithms are used to map data of arbitrary size to fixed-size values.
They are commonly used in data structures like hash tables for fast data retrieval.
Examples of hashing algorithms include MD5, SHA-1, and SHA-256.
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posted on 31 Mar 2022
I applied via Naukri.com and was interviewed before Mar 2021. There were 2 interview rounds.
I applied via Campus Placement and was interviewed before Nov 2019. There were 6 interview rounds.
I appeared for an interview in Jul 2019.
I applied via Referral
A generic swap function swaps two values of any data type.
The function should take two parameters of any data type.
Use a temporary variable to store the value of one parameter.
Assign the value of the second parameter to the first parameter.
Assign the value of the temporary variable to the second parameter.
Search for an element in a rotated sorted linked list.
Find the pivot point where the list is rotated.
Divide the list into two sublists based on the pivot point.
Perform binary search on the appropriate sublist.
Handle edge cases such as empty list and list with only one element.
Search an element in a rotated sorted array
Find the pivot point where the array is rotated
Divide the array into two sub-arrays based on pivot point
Perform binary search on the appropriate sub-array
Repeat until element is found or sub-array size is 1
Find 5 missing numbers in an array of size 95 containing numbers in range 1 to 100.
Create a boolean array of size 100 and mark the present numbers
Iterate through the boolean array and find the missing numbers
Alternatively, use a HashSet to store the present numbers and find the missing ones
Given a Sudoku board, find possible numbers for an empty cell.
Iterate through empty cells and check possible numbers using row, column, and box constraints.
Use a set to keep track of possible numbers for each empty cell.
Return the set of possible numbers for the given empty cell.
Find integer average of 4 unsigned integers without typecasting
Add all the integers and divide by 4
Use bit shifting to divide by 4
Handle overflow by using long long data type
Use unsigned int data type for input
Code to identify 32 bit or 64 bit architecture of a processor
Check if the operating system is 32 bit or 64 bit
If OS is 32 bit, processor is 32 bit
If OS is 64 bit, check if processor supports 64 bit architecture
Use CPUID instruction to check if processor supports 64 bit architecture
Convert binary number to base 64 integer
Divide the binary number into groups of 6 bits
Convert each group of 6 bits to decimal
Map the decimal value to the corresponding base 64 character
Concatenate the base 64 characters to form the final integer
posted on 31 May 2017
I have been actively involved in various extra curricular activities such as volunteering, sports, and leadership roles.
Volunteered at local animal shelter every weekend
Captain of the soccer team in high school
Organized charity events for underprivileged children
A friend function is a non-member function that has access to the private and protected members of a class.
Declared inside the class but defined outside the class scope
Can access private and protected members of the class
Not a member of the class but has access to its private members
Used to allow external functions to access and modify private data of a class
Can be declared as a friend in another class
atoi function converts a string to an integer in C.
The function takes a string as input and returns an integer.
Leading white spaces are ignored.
If the string contains non-numeric characters, the function stops conversion and returns the converted value.
The function returns 0 if the input string is not a valid integer.
Example: atoi('123') returns 123.
A program to print star pattern
Use nested loops to print the pattern
The outer loop controls the number of rows
The inner loop controls the number of stars to be printed in each row
Use print() or println() function to print the stars
Run time polymorphism is the ability of a program to determine the object type at runtime and call the appropriate method.
It is achieved through virtual functions and dynamic binding.
Allows for more flexible and extensible code.
Example: a base class Animal with virtual function makeSound() and derived classes Dog and Cat that override makeSound().
At runtime, if an Animal pointer points to a Dog object, calling makeSoun
Right outer join is a type of join operation that returns all the rows from the right table and the matching rows from the left table.
Right outer join is denoted by the RIGHT JOIN keyword in SQL.
It is used to combine rows from two tables based on a related column.
In the result set, unmatched rows from the right table will have NULL values for the columns of the left table.
A real-world scenario for using a right outer j...
Refrential integrity ensures that relationships between tables in a database remain consistent.
It is a database concept that ensures that foreign key values in one table match the primary key values in another table.
It prevents orphaned records in a database.
It maintains data consistency and accuracy.
For example, if a customer record is deleted, all related orders for that customer should also be deleted.
It is enforced...
Primary key uniquely identifies a record in a table, while Unique key ensures uniqueness of a column.
Primary key can't have null values, Unique key can have one null value
A table can have only one Primary key, but multiple Unique keys
Primary key is automatically indexed, Unique key is not necessarily indexed
Triggers are database objects that are automatically executed in response to certain events.
Triggers can be used to enforce business rules, audit changes, or replicate data.
There are two types of triggers: DML triggers and DDL triggers.
DML triggers are fired in response to DML statements (INSERT, UPDATE, DELETE).
DDL triggers are fired in response to DDL statements (CREATE, ALTER, DROP).
Swapping two character variables without using third
Use XOR operator to swap two variables without using third variable
Assign the XOR of both variables to the first variable
Assign the XOR of the first variable and second variable to the second variable
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