Headway Business Solutions Interview Questions and Answers

A C program to reverse a string

• Use a loop to iterate through the string and swap the characters at the beginning and end of the string

• Create a temporary variable to hold the character being swapped

• Terminate the loop when the index of the beginning of the string is greater than or equal to the index of the end of the string

Low level languages are closer to machine code and hardware, while high level languages are more abstract and easier for humans to understand.

• Low level languages are closer to machine code and hardware, while high level languages are more abstract and easier for humans to understand.

• Low level languages are more difficult to write and understand, while high level languages are more user-friendly.

• Examples of low level languages include assembly language, while examples of high ...read more

Find largest and smallest from an array of strings.

• Convert strings to numbers for comparison

• Use a loop to iterate through the array and compare each element to find the largest and smallest

• Initialize variables to store the largest and smallest values

NumPy is a popular Python library for numerical computing.

• NumPy stands for Numerical Python.

• It provides support for large, multi-dimensional arrays and matrices.

• NumPy includes a large collection of mathematical functions to operate on these arrays.

• It is widely used in scientific computing, data analysis, and machine learning.

• Example: import numpy as np

Reverse your name when writing it out

• Start by writing your last name first

• Then write your first name

• For example, if your name is John Doe, you would write it as 'eoD nhoJ'

C is a procedural programming language while C++ is an object-oriented programming language with additional features like classes and inheritance.

• C is a procedural programming language, while C++ is a multi-paradigm language with support for object-oriented programming.

• C does not support classes and objects, while C++ does.

• C is a subset of C++, meaning that any valid C code is also valid C++ code.

• C++ has features like classes, inheritance, polymorphism, and operator overloadi...read more