10+ Hiresters Interview Questions and Answers

Namespace in Python is a way to organize and manage variables, functions, and classes. Tuples are immutable sequences of elements. Slicing is a way to extract a subset of elements from a sequence.

• Namespace in Python helps avoid naming conflicts by organizing variables, functions, and classes.

• Tuples are immutable and ordered collections of elements, defined using parentheses. Example: my_tuple = (1, 2, 3)

• Mutable objects can be changed after creation, while immutable objects ca...read more

Call by value passes a copy of the value while reference by value passes a copy of the reference to the value.

• Call by value passes the value of a variable to a function, while reference by value passes the reference to the variable.

• In call by value, any changes made to the parameter inside the function do not affect the original variable outside the function.

• In reference by value, any changes made to the parameter inside the function affect the original variable outside the f...read more

Reversing a six-digit number using C programming language.

• Take input of a six-digit number from the user.

• Extract each digit of the number using modulus operator.

• Multiply the extracted digit with its respective place value and add it to the reversed number.

• Repeat the above step for all digits.

• Print the reversed number.

Exception handling blocks include try, catch, finally. final is a keyword for declaring constants, finally is a block always executed. Static methods cannot be overridden.

• Exception handling blocks: try, catch, finally

• final keyword for constants, finally block always executed

• Static methods cannot be overridden

An array is a collection of similar data types stored in contiguous memory locations.

• Arrays can be of any data type such as integers, floats, characters, etc.

• Arrays are accessed using an index starting from 0.

• Arrays can be one-dimensional, two-dimensional, or multi-dimensional.

• Example: string[] names = {"John", "Jane", "Bob"};

• Example: int[] numbers = new int[5];

BPS stands for Business Process Services. TCS is a multinational IT services company.

• BPS involves outsourcing of non-core business functions to a third-party provider.

• TCS offers a range of IT services including consulting, application development, and maintenance.

• TCS is headquartered in Mumbai, India and operates in over 46 countries.

• TCS is one of the largest IT services companies in the world with a market capitalization of over $100 billion.

I am comfortable in Java and Python for programming.

• Proficient in Java for object-oriented programming

• Skilled in Python for data analysis and scripting

A pointer is a variable that stores the memory address of another variable. An array is a collection of similar data types stored in contiguous memory locations. C is a procedural programming language, while C++ is an object-oriented programming language.

• Pointer in C: int *ptr; // declaring a pointer to an integer variable

• Array in C++: int arr[5]; // declaring an array of integers with 5 elements

• Difference between C & C++: C is procedural, C++ is object-oriented

Syntax for while loop and for loop

• For loop: for(initialization; condition; increment/decrement){ //code block }

• While loop: while(condition){ //code block }

• Example: for(int i=0; i<5; i++){ cout<

• Example: int i=0; while(i<5){ cout<

Pointer is a variable that stores the memory address of another variable in C programming language.

• Pointers are used to manipulate data structures like arrays, linked lists, and trees.

• They can be used to pass values by reference to functions.

• Pointer arithmetic can be performed to access elements of an array.

• Example: int *ptr; ptr = # printf("%d", *ptr);

• Example: void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }

• Example: int arr[5] = {1, 2, 3, 4, 5}; int *ptr = ar...read more

Types of charts in Power BI include bar charts, line charts, pie charts, scatter plots, and more.

• Bar chart

• Line chart

• Pie chart

• Scatter plot

• Area chart

• Donut chart

• Waterfall chart

• Treemap

• KPIs

• Gauge chart

Fibonacci program generates a series of numbers where each number is the sum of the two preceding ones.

• Declare variables for first and second numbers of the series

• Use a loop to generate the series up to a certain limit

• Add the previous two numbers to get the next number in the series

• Print the series

List is mutable, tuple is immutable in Python.

• List can be modified after creation, tuple cannot

• List is defined using square brackets [], tuple using parentheses ()

• List is used for collections of items that may change, tuple for fixed collections

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)

Provide a code snippet in a known programming language.

• Use proper syntax and conventions of the chosen language.

• Include comments to explain the code logic.

• Ensure the code is functional and error-free.