Monday 27 April 2020

Bitwise Operation in Python | Castor Classes

Author April 27, 2020 Python No comments

Topics covered:
1)Bitwise and 2)Bitwise or 3)Bitwise xor Python for beginners:
https://www.youtube.com/watch?v=egq7Z...

Logical Operators in Python | Castor Classes

Author April 27, 2020 Python No comments

Topics covered:
1)and 2)or 3)not Python for beginners:
https://www.youtube.com/watch?v=egq7Z..

Quiz on String | Python | Castor Classes

Author April 27, 2020 Python No comments

Python for beginners:
https://www.youtube.com/watch?v=egq7Z...

A Primer on Scientific Programming with Python (Texts in Computational Science and Engineering Book 6) Kindle Edition by Hans Petter Langtangen (Author)

Author April 27, 2020 Books, Python No comments

The book serves as a first introduction to computer programming of scientific applications, using the high-level Python language. The exposition is example and problem-oriented, where the applications are taken from mathematics, numerical calculus, statistics, physics, biology and finance. The book teaches "Matlab-style" and procedural programming as well as object-oriented programming. High school mathematics is a required background and it is advantageous to study classical and numerical one-variable calculus in parallel with reading this book. Besides learning how to program computers, the reader will also learn how to solve mathematical problems, arising in various branches of science and engineering, with the aid of numerical methods and programming. By blending programming, mathematics and scientific applications, the book lays a solid foundation for practicing computational science.

From the reviews: Langtangen … does an excellent job of introducing programming as a set of skills in problem solving. He guides the reader into thinking properly about producing program logic and data structures for modeling real-world problems using objects and functions and embracing the object-oriented paradigm. … Summing Up: Highly recommended.

F. H. Wild III, Choice, Vol. 47 (8), April 2010

Those of us who have learned scientific programming in Python ‘on the streets’ could be a little jealous of students who have the opportunity to take a course out of Langtangen’s Primer.”
John D. Cook, The Mathematical Association of America, September 2011

This book goes through Python in particular, and programming in general, via tasks that scientists will likely perform. It contains valuable information for students new to scientific computing and would be the perfect bridge between an introduction to programming and an advanced course on numerical methods or computational science.
Alex Small, IEEE, CiSE Vol. 14 (2), March /April 2012

“This fourth edition is a wonderful, inclusive textbook that covers pretty much everything one needs to know to go from zero to fairly sophisticated scientific programming in Python…”
Joan Horvath, Computing Reviews, March 2015

Buy: A Primer on Scientific Programming with Python (Texts in Computational Science and Engineering Book 6) Kindle Edition by Hans Petter Langtangen (Author)

PDF Download:

What is Variable, Datatype and C# Datatypes

Irawen April 26, 2020 C# No comments

Variables :

It is location in memory (RAM) to temporary store a value during execution of Program / Software.
As the name suggests, the value of variable can change during execution of program.
A variable is made of 3 things.

                - Datatype
                - Name
                - Value (optional)

DataType :
   - It means what type of value we can store in the variable.

Numbers such 123, 10.50 etc
Strings such as UK, Canada etc
Data such 11/4/2020

Name :

It identifies the variable. For example, firstName, lastName, age

Value :

What actual value is stored in variable.

List of DataTypes in C# :

Integer → Numbers such as 120, 345 etc
Decimal → Number such as 3.5, 4.5 etc
Char → Single character such as A,a,B,z
Bool → True or False value
String → More than one characters value such as John Smith, Mark Smith, Canada , Landon etc.

Syntax :
DataType variableName = value;

Naming Rules :
一 Names may consists of letters (A-Z or a-z), digits and underscores

e.g firstName, firstNumber, _Age, firstNumber1 (correct)
#FirstName, @Email (wrong)

一 Name must begin with a letter or underscore.

e.g. firstName or _firstName (correct)
1stName or 2ndNumber (wrong)

一Name must not have spaces.

e.g. first Name (wrong)
firstName (correct)

一 Names must not have reserved word or C# keywords. List of C# keyword are shown in the table.

Naming Conventions :
ー Names must be meaningful

e.g. firstNameString, cnicString, studentldlnteger (correct)
a,b, obj1 (wrong)

ー Name must include its datatype

e.g. firstNameString, cnicString, studentldlnteger (correct)
FirstName, firstname, CNIC or Studentld (wrong)

ー Name must begin with lowercase letter and then capitalize each word of the name

e.g. firstNameString, cnicString, studentldinteger (correct)
FirstName, firstname, CNIC or StudentId (wrong)

Introduction of C# | First C# Program | C# Vs Java |

Irawen April 26, 2020 C# No comments

C# Introduction

Computer Programming : It is a process of creating computer programs or in other word software to solve particular problem.

   - Word Processor
   - Hospital Management
   - Spreadsheet

It is a Object Oriented Programming Language from Microsoft Corporation in year 2000.
C# is a part of .Net Framework and currently in version 16.3.
It is helps in developing variety of application such as windows based, Database based, Web Services, Web Application and more.

C# Vs Java : Both are Object Oriented

C# -

Required CLR (Common Language RunTime)
GOTO Statement is present
Support Structure and Unions
Support Unchecked Exception
Less Secure than Java

Java -

Required JRE (Java Runtime Environment)
No GOTO statement
No Structure and Union
Supports both Checked and Unchecked Exception
Much Secure

First C# Program :-

String in Python | Part 2.3 | Castor Classes

Author April 26, 2020 Python No comments

In this video, I have discussed slicing of a string in Python
Python for beginners: https://www.youtube.com/watch?v=egq7Z...

String in Python | Part 2.2 | Castor Classes

Author April 26, 2020 Python No comments

Topics covered: 1)Positive Indexing 2)Negative Indexing Python for beginners: https://www.youtube.com/watch?v=egq7Z..

Python free Download

Author April 26, 2020 Downloads, Python, Software No comments

Download link: Latest Python downloads

Python Programming Fundamentals (Undergraduate Topics in Computer Science) Kindle Edition by Kent D. Lee (Author) pdf

Author April 26, 2020 Books, Python No comments

This easy-to-follow and classroom-tested textbook guides the reader through the fundamentals of programming with Python, an accessible language which can be learned incrementally.

Features: incudes numerous examples and practice exercises throughout the text, with additional exercises, solutions and review questions at the end of each chapter; highlights the patterns which frequently appear when writing programs, reinforcing the application of these patterns for problem-solving through practice exercises; introduces the use of a debugger tool to inspect a program, enabling students to discover for themselves how programs work and enhance their understanding; presents the Tkinter framework for building graphical user interface applications and event-driven programs; provides instructional videos and additional information for students, as well as support materials for instructors, at an associated website.
Buy: Python Programming Fundamentals (Undergraduate Topics in Computer Science) Kindle Edition by Kent D. Lee (Author)

Buy: Python Programming Fundamentals (Undergraduate Topics in Computer Science) Kindle Edition by Kent D. Lee (Author)

PDF Download:

List in Python | Part 6 | Castor Classes

Author April 26, 2020 Python No comments

Topics covered in this video: 1)max 2)min 3)index 4)lexicographical sorting of list made of string element Python for beginners: https://www.youtube.com/watch?v=egq7Z...

Split string by arbitrary number of white spaces | Python | Castor Classes

Author April 26, 2020 Python No comments

Code:

class Solution:
def reverseWords(self, s: str) -> str:
s=s+" ";
b="";
l=[];
for i in s:
if(i!=' '):
b=b+i;
elif(b!=''):
l.append(b);
b="";
l.reverse();
return " ".join(l);

Detail explanation of algorithm: Brahmastra of Word extraction from a string https://www.youtube.com/watch?v=3VWI1... Check the problem statement here: https://leetcode.com/problems/reverse... Python for beginners: https://www.youtube.com/watch?v=egq7Z

String in Python | Part 2.1 | Castor Classes

Author April 26, 2020 Python No comments

Topics covered: 1)len 2)comparison 3)in Python for beginners: https://www.youtube.com/watch?v=egq7Z...

Hello World | Python | Castor Classes

Author April 25, 2020 Python No comments

Topics covered in this video:
1)print method
2)type method
3)How to take string input from the user
4)How to take integer input from the user

Python for beginners: https://www.youtube.com/watch?v=egq7Z...

Data Type Conversion | Python | Castor Classes

Author April 25, 2020 Python No comments

Power of a number | Python | Castor Classes https://www.youtube.com/watch?v=omFAv... Python for beginners: https://www.youtube.com/watch?v=egq7Z... Web 🌐http://www.clcoding.com/ Telegram: https://t.me/clcoding_python https://www.facebook.com/pirawenpython/ https://www.facebook.com/groups/piraw...

The Python Workbook: A Brief Introduction with Exercises and Solutions Hardcover – 4 February 2015 by Ben Stephenson (Author)

Author April 25, 2020 Books, Python No comments

While other textbooks devote their pages to explaining introductory programming concepts, The Python Workbook focuses exclusively on exercises, following the philosophy that computer programming is a skill best learned through experience and practice. Designed to support and encourage hands-on learning about programming, this student-friendly work contains 174 exercises, spanning a variety of academic disciplines and everyday situations. Solutions to selected exercises are also provided, supported by brief annotations that explain the technique used to solve the problem, or highlight specific points of Python syntax. No background knowledge is required to solve the exercises, beyond the material covered in a typical introductory Python programming course.

Undergraduate students undergoing their first programming course and wishing to enhance their programming abilities will find the exercises and solutions provided in this book to be ideal for their needs.
Buy: The Python Workbook: A Brief Introduction with Exercises and Solutions Hardcover – 4 February 2015 by Ben Stephenson (Author)

Power of a number | Python | Castor Classes

Author April 25, 2020 Python No comments

Python for beginners: https://www.youtube.com/watch?v=egq7Z...

Web 🌐http://www.clcoding.com/
Telegram: https://t.me/clcoding_python
https://www.facebook.com/pirawenpython/
https://www.facebook.com/groups/piraw...

Number Data Type | Python | Castor Classes

Author April 24, 2020 Python No comments

Python for beginners: https://www.youtube.com/watch?v=egq7Z... Web 🌐http://www.clcoding.com/ Telegram: https://t.me/clcoding_python https://www.facebook.com/pirawenpython/ https://www.facebook.com/groups/piraw...

Reverse Words in a String(Part 2) | GeeksForGeeks | Python | Castor Classes

Author April 24, 2020 Python No comments

Code: t=int(input()); ie=0; while (ie<t): a=input(); e=a.split("."); output=[]; for i in e: a=list(i); a.reverse(); es="".join(a); output.append(es); print(".".join(output)); ie=ie+1; Prerequisites: Reverse Words in a String III | LeetCode | Python | Castor Classes https://www.youtube.com/watch?v=m067u... Python for beginners: https://www.youtube.com/watch?v=egq7Z... Web 🌐http://www.clcoding.com/ Telegram: https://t.me/clcoding_python https://www.facebook.com/pirawenpython/ https://www.facebook.com/groups/piraw...

Reverse Words in a String III (Part 1) | LeetCode | Python | Castor Classes

Author April 24, 2020 Python No comments

Code:

class Solution:
def reverseWords(self, s: str) -> str:
e=s.split(" ");
output=[];
for i in e:
a=list(i);
a.reverse();
es="".join(a);
output.append(es);
return " ".join(output);
Python for beginners: https://www.youtube.com/watch?v=egq7Z... Web 🌐http://www.clcoding.com/ Telegram: https://t.me/clcoding_python https://www.facebook.com/pirawenpython/ https://www.facebook.com/groups/piraw...

Check if a string is Isogram or not | Python | Castor Classes

Author April 24, 2020 Python No comments

Code is given in the comment section. Python for beginners: https://www.youtube.com/watch?v=egq7Z...

Replace all 0's with 5 | Python | Castor Classes

Author April 24, 2020 Python No comments

Code:

n=int(input("Enter the number:"));
s=str(n);
g="";
for i in s:
if(i=='0'):
g=g+'5';
else:
g=g+i;
t=int(g);
print(t)

Python for beginners: https://www.youtube.com/watch?v=egq7Z...

Convert a word to list of characters using list & Palindrome | Python | Castor Classes

Author April 24, 2020 Python No comments

Code:

class Solution:
def isPalindrome(self, x: int) -> bool:
e=str(x);
a=list(e);
a.reverse();
w="".join(a);
if(e==w):
return True;
else:
return False;

Prerequisite: Single Number | Practice Problem on List | Python | Castor Classes: https://www.youtube.com/watch?v=mIQBl... Single Number II | Practice Problem on List | Python | Castor Classes https://www.youtube.com/watch?v=qnBML... Single Number III | LeetCode | Practice Problem on List | Python | Castor Classes https://www.youtube.com/watch?v=8JEUM... List in Python | Part 1 | Castor Classes: https://www.youtube.com/watch?v=P2ogQ... List in Python | Part 2 | Castor Classes: https://www.youtube.com/watch?v=vNxxQ... List in Python | Part 3 | Castor Classes https://www.youtube.com/watch?v=aUfow... Iterate over a list & string | List in Python | Part 4 | Castor Classes https://www.youtube.com/watch?v=4Zrfk... Convert list to string | List in Python | Part 5 | Castor Classes https://www.youtube.com/watch?v=mLHOF... Python for beginners: https://www.youtube.com/watch?v=egq7Z...