std::min_element() in C++ STL

std::min_element() is a utility function under library in C++ STL. The purpose of the function is to give the minimum element value of a container(vector, array etc) within a given range [start, end). Now, the question arises, when we have the std::min(), what is the point of the std::min_element() ? The answer is, there…

https://thecodingbot.com/stdmin_element-in-c-stl/

How to get Unicode code of a character in Python

What is a Unicode encoding? Unicode is the encoding type or standard which contains the character set of all the languages that exist, all around the world. Each character is mapped to an integer known as a Code point. It uniquely identifies a character among the other characters.  The Unicode encoding came into existence when languages other…

https://thecodingbot.com/how-to-get-unicode-code-of-a-character-in-python/

Python’s built-in bin() method with examples

Among many highly useful built-in functions, bin() is also one of them. It was added in Python 2.6, and since then its support has not been deprecated or removed. It is similar to the hex() method which returns the hexadecimal form of the integer while this returns the binary form. bin(x): bin(x) returns the binary…

https://thecodingbot.com/pythons-built-in-bin-method-with-examples/

Convert a binary number(base 2) to the integer(base 10) in Python

Python has hundreds of utility functions that are built-in which ease our efforts to a great extent. Today, the problem we have in hand “Conversion of a binary number to its integer form(base 10)“, python has some built-in methods for this as well. In this article, we will go through different ways we can convert…

https://thecodingbot.com/convert-a-binary-numberbase-2-to-the-integerbase-10-in-python/

Python’s built-in hex() method with examples

In this tutorial, we will talk about hex(), another very useful Python utility method. It is pretty similar to bin(), the latter is used to find the binary representation of an integer, while the former converts the integer to its hexadecimal string format. We talked about built-in bin() function here. Have a read. hex(x): Syntax:…

https://thecodingbot.com/pythons-built-in-hex-method-with-examples/

Python’s built-in dict() method with examples

What is a dictionary in Python? A dictionary is a collection which is unordered, mutable and indexed. Mutable here means the values can be changed after it is initialized. It is basically a set of key:value pairs with a condition that no two keys are same. dict() is a built-in method and also a constructor…

https://thecodingbot.com/pythons-built-in-dict-method-with-examples/

Remove duplicate rows from a Pandas Dataframe

Problem Statement: Given a Pandas dataframe, remove the duplicate rows. Solution: There are certain functions available to remove duplicates or identify duplicated in the dataframe in Pandas. One such function is df.duplicated() and the other function is df.drop_duplicates(). df.duplicated() not exactly removes duplicates from the dataframe but it identifies them. It returns a boolean series,…

https://thecodingbot.com/remove-duplicate-rows-from-a-pandas-dataframe/

How to find the digital root of a non-negative integer

Problem Statement: Given a non-negative integer find it’s digital root (repeated digital sum). Example: DigitalRoot(1335) = 1 + 3 + 3 + 5 = 12 = 1 + 2 = 3. Solution: Before moving forward with the approaches, let’s us see what digital root is. Digital Root (or Repeated Digital Sum):  It is a single digit value obtained…

https://thecodingbot.com/how-to-find-the-digital-root-of-a-non-negative-integer/

IPython/Jupyter notebook keyboard shortcuts

Table of Content: OverviewDifferent Types of mode in Jupyter NotebookCommand Mode shortcutsEdit Mode shortcutsCommon shortcuts Jupyter notebooks(previously known as Ipython Notebook) is an opensource interactive web application that allows us to write and run python codes and also create visualization, equations and markdowns. It is one of the most popular tools used in data analysis…

https://thecodingbot.com/ipython-jupyter-notebook-keyboard-shortcuts/

Python’s built-in bool() with examples

Python provides many built-in functions/methods which ease many cumbersome tasks. One such method is bool(). In this article, we will talk about bool(), its syntax, what parameters it takes and some examples demonstrating its use. bool(x) bool(x) converts the object, x, to a boolean value. What value it will return, True or False, totally depends…

https://thecodingbot.com/pythons-built-in-bool-with-examples/

Different type of looping in Python

Table of Content: OverviewWhile loopDescriptionSyntax and ExamplesBreak statementContinue statementElse statementFor looprange()range(x)range(start,end)range(start,end,step)xrange()Difference between xrange() and range() In programming, a loop is a sequence of instructions that are continuously repeated until certain condition(s) is(are) met. The condition is often known as the terminating condition. In python, the Loops are broadly classified into two types – For loop…

https://thecodingbot.com/different-type-of-looping-in-python/

Python’s built-in all() method with examples

The Python interpreter has a number of functions and types built into it that are always available. One such method is all(). In this tutorial, we will talk about all() – its syntax, what parameter it takes, what is returns and some examples demonstrating its use. all() all(x) returns True if all elements of the iterable are…

https://thecodingbot.com/pythons-built-in-all-method-with-examples/

Python’s built-in any() method with examples

Table of Content: OverviewSyntax and description Examples using any()Time Complexity of the function Python interpreter has a bunch of methods and types built into it. The methods are known as built-in methods. any() is one such method and in a way, you can say it is the sister method of all(). In this tutorial, we…

https://thecodingbot.com/pythons-built-in-any-method-with-examples/

Deleting a linked list in C++

Problem Statement: Given a linked list, write a program to delete it. Example: Linked List: 2->4->6->9 *After Deletion* Output: The Linked List is Empty. Before moving forward, it is necessary to clarify what we actually mean by deletion of the linked list. Deletion of the linked list is not simply pointing the head of the…

https://thecodingbot.com/deleting-a-linked-list-in-c/

Python’s built-in chr() function with examples

In this tutorial, we will talk about one useful built-in method, and that method is chr(). Built-in methods are the utility methods provided by the Python interpreter for our use, they come along when you install Python in your environment. It help us to skip implementing many common operations like converting an integer to binary…

https://thecodingbot.com/pythons-built-in-chr-function-with-examples/

Convert an octal number(base 8) to its decimal(base 10) representation in Python

Python’s built-in functions are the real deal when it comes to ease many tasks to a great extent, and that’s why I am a big fan of Python. What are built-in functions in Python? Built-in methods are the utility methods provided by the Python interpreter for our use, they come along when you install Python…

https://thecodingbot.com/convert-an-octal-numberbase-8-to-its-decimalbase-10-representation-in-python/

Find the element that appears once while all the other element appears twice in an array

Problem Statement: Given an array of numbers, all the elements appear twice except one, you need to find that number. Solution:  This is a pretty famous interview question and is generally asked either in telephonic interviews or first round. Not that hard problem but the most efficient method to solve this problem is not very obvious. So, either…

https://thecodingbot.com/find-the-element-that-appears-once-while-all-the-other-element-appears-twice-in-an-array/

Insert a node in a sorted linked list

Problem Statement: Given a sorted linked list and a node, insert the node in the linked list such that the linked list still remain sorted. Example: Input: 2 -> 8 -> 12 -> 41 ->NULL, val = 30 Output: 2 -> 8 -> 12 -> 30 ->41 -> NULL. Table of Content: OverviewApproach 1: Insertion…

https://thecodingbot.com/insert-a-node-in-a-sorted-linked-list/

Insert a Node at the beginning of a Linked List

Problem Statement: Given a linked list(can be an empty list), add a node at the beginning of it. Solution: Table of Content: OverviewApproach 1: Iteratively adding the node at the beginningSteps in detailImplementation of Approach 1Time and Space Complexity discussion.Some more tutorials on the linked list This is a very famous interview question which you…

https://thecodingbot.com/insert-a-node-at-the-beginning-of-a-linked-list/

Python’s built-in id() method with examples

In this tutorial, we will talk about a built-in method, and that method is id(). We will talk about its syntax, where is it used, what parameters it takes and what value it returns. After the discussion, we will see some examples for better understanding. Table of Contents: OverviewWhat are the built-in methods in Python?OverviewThe lifetime…

https://thecodingbot.com/pythons-built-in-id-with-examples/