Python ord() function and its application

In Python, ord() is a built-in function which returns an integer representing the Unicode point value of a character. Before discussing anything else, it is important to first know what the Unicode encoding is. Unicode Unicode is the encoding type or a standard which contains the character set of all the languages that exist, all…

https://thecodingbot.com/python-ord-function-and-its-application/

How to convert a string to Uppercase or Lowercase in C++

Problem Statement Given a string, you need to change the case of the string. If the question demands the conversion into uppercase, then change the case to uppercase, else convert the string into lowercase. Solution Approach 1 – Using the iteration In this approach, we will iterate the string and check the case of each…

https://thecodingbot.com/how-to-convert-a-string-to-uppercase-or-lowercase-in-c/

Python’s dictionary len() method

len() is a built-in function in python which returns the number of items in an object. It can be used with a sequence(list, tuple, string etc) or a collection (like dictionary, set etc). However, this tutorial shall only focus its use with a dictionary. For complete tutorial on built-in len(), visit: Python’s built-in len() method…

https://thecodingbot.com/pythons-len-on-a-dictionary/

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Excellent Book, An Introduction to Statistical Learning provides an accessible overview of the field of statistical learning, an essential toolset for making sense of the vast and complex data sets that have emerged in fields ranging from biology to finance to marketing to astrophysics in the past twenty years. This book presents some of the most important modeling and prediction techniques, along with relevant applications. Topics include linear regression, classification, resampling methods, shrinkage approaches, tree-based methods, support vector machines, clustering, and more. Color graphics and real-world examples are used to illustrate the methods presented. Since the goal of this textbook is to facilitate the use of these statistical learning techniques by practitioners in science, industry, and other fields, each chapter contains a tutorial on implementing the analyses and methods presented in R, an extremely popular open source statistical software platform.

Print inverted hollow star triangle pattern in C++

Problem Statement Given the number of rows, form an inverted hollow triangle pattern made up of stars(asterisks)”*”. For Example Input: 5 Output: Inverted hollow star triangle pattern Solution This problem is a little tricky in comparison to its sister problem(printing a hollow star triangle). However, we can solve this easily by making a few changes…

https://thecodingbot.com/print-inverted-hollow-star-triangle-pattern-in-c/

Week #1 - Today's topic - Full Stack development(Django). Here's a list of top resources to learn Django Python Framework https://medium.com/quick-code/top-tutorials-to-learn-django-framework-for-python-beginners-fe1a9e315aa9

#Book 2
Building Restful APIs using Django and Django Rest rest framework. The book is an easy guide for beginners. It is an extension of the 'poll' app from Django official tutorial into an API. Download link: bit.ly/buildingapiswithdjangorestframework

Nice place to start your django journey. A simple todo app based on Django :-https://github.com/CITGuru/todoapp

Print the elements of a singly linked list in reverse order

Problem Statement Given a singly linked list, print its elements in reverse order. For example: Input : 1->2->3->4->NULL Output: Printing the linked list in reverse order: 4 3 2 1 Solution First of all, readers should be clear that this problem is not the same as reversing the linked list. In this problem, we just need to…

https://thecodingbot.com/print-the-elements-of-a-singly-linked-list-in-reverse-order/

Full treatment of data structures and algorithms for sorting, searching, graph processing, and string processing, including fifty algorithms every programmer should know.

The minimum absolute difference between two elements in an Array

Problem Statement Given an array of integers, find and print the minimum absolute difference between any two elements in the array. Absolute difference (definition from Wikipedia): In mathematics, the absolute value or modulus of a real number x, denoted |x|, is the non-negative value of x without regard to its sign. Namely, |x| = x if x is positive, and |x| = −x if x is negative (in which case −x is positive), and |0| = 0. For example, the absolute value…

https://thecodingbot.com/the-minimum-absolute-difference-between-two-elements-in-an-array/

Find the sum of all the elements in an array

Problem Statement Given an array of integers, find the sum of all its elements. For example: Input: arr = {1,9,-11,6,23} Output: 28 Input: arr = {4,4,9,5} Output:22 Solution Probably a very easy problem. We will try to solve it in multiple ways. Let’s begin the tutorial. Approach 1 – Simple Looping The most obvious way…

https://thecodingbot.com/find-the-sum-of-all-the-elements-in-an-array/

Top notch resource to learn about the time complexity analysis of an algorithm l, a youtube playlist.

Print the elements of an array in reverse order in C++

Problem Statement Given an array, print its elements in reverse order. Note: We are not allowed to change the structure of the array For example: Input: {1,2,44,33} Output: {33,44,2,1} Input: {99,11,33,88} Output: {88,33,11,99} Solution Pretty easy problem, we will see all the different ways to solve it. Approach 1 – Backward looping The most obvious…

https://thecodingbot.com/print-the-elements-of-an-array-in-reverse-order-in-c/

Deleting a linked list in C++

Problem Statement Given a linked list, write a program to delete it. For Example Input: 2->4->6->9->NULL *After the Deletion* Output: The Linked List is Empty. Overview Before moving forward, it is necessary to clarify what we actually mean by deletion of the linked list. By deletion, we don’t mean to point the head of the…

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