NEC Interview Questions, Process, and Tips

Reverse a string using recursion.

• Create a function that takes a string as input.

• Check if the string is empty or has only one character.

• If yes, return the string.

• If not, call the function recursively with the substring excluding the first character and concatenate the first character at the end.

• Return the reversed string.

The task is to capitalize the first and last character of each word in a given string.

• Split the string into an array of words

• Iterate through each word and capitalize the first and last character

• Join the modified words back into a string

A generator is a device that converts mechanical energy into electrical energy.

• Generators are commonly used in power plants to produce electricity.

• They work on the principle of electromagnetic induction.

• The mechanical energy can be provided by various sources such as steam turbines, gas turbines, wind turbines, etc.

• Generators can be classified into AC generators and DC generators.

• AC generators are used in most power pl...read more

A decorator is a design pattern in object-oriented programming that allows behavior to be added to an individual object, dynamically.

• Decorators are used to modify the behavior of a function or class without changing its source code.

• They are implemented using the @ symbol in Python.

• Decorators can be used for logging, timing, caching, and more.

• An example of a decorator is the @staticmethod decorator in Python, which mark...read more

A .pyc file is a compiled Python file that contains bytecode.

• It is created by the Python interpreter when a .py file is imported or run.

• It is platform-independent and can be executed on any system with the same version of Python.

• It speeds up the execution of Python code as the interpreter does not have to compile the code every time it is run.

• It can be deleted without affecting the original .py file, as the interpreter

List is mutable while tuple is immutable.

• List can be modified while tuple cannot be modified.

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

• List is used for homogenous data while tuple is used for heterogenous data.

• List is slower than tuple in terms of performance.

• Example of list: [1, 2, 3] and example of tuple: (1, 'hello', 3.14)