Notes for Computer Science

A string is a sequence of characters, where each character has a unique position/index, in this module functions and slicing with examples are covered.

After slicing come sometimes you need to change the values of particular elements in the array.

There are many use cases in business for data science including finding a better housing price prediction algorithm for zillow, finding key attributes associated with wine quality, and building a recommendation system to increase the click-through-rate for amazon. here in this module indexing, numpy, slicing are covered in brief.

In today’s life computers plays a vital role in our day-to-day life. we are surrounded by computers nowadays. most of our daily work is directly or indirectly connected with computer systems. let’s discuss what is a computer system?

The file contains objective and subjective type questions, with explanations. target audience is school level icse java, but also equally hepful for others.the part 1 will be available on demand.

Questions and answers solved.

Including questions and answers with mcq's and codes solved.

A list is a data structure in python that is a mutable, or changeable, ordered sequence of elements. each element or value that is inside of a list is called an item. just as strings are defined as characters between quotes, lists are defined by having values between square brackets [ ]

Conditional expressions using if else construct.

Introduction to java

Introduction to dabase concepts.

Most of the c++ built-in operators can be redefined or overloaded. thus, operators can be used with user-defined types as well (for example, allowing you to add two objects together).

A hash function is any function that maps a data set of an arbitrary size to a data set of a fixed size that falls into the hash table. the values returned by a hash function are called hash values, hash codes, hash sums, or simply hashes. with a c++ program to demonstrate.

A graph is a set of connected nodes where each node is called a vertex and the connection between two of them is called an edge. we define a graph as a data structure that consists of finite vertices and edges. with cpp program.

The linked list data structure is often used to implement other data structures. with c++ and python programs included to demonstrate linked list.

We, humans, know how to interpret the infix notation, as that's what we are taught in schools. but this form is not very suitable for the computer to read and evaluate the expressions, because each operator has a precedence, which shows the order in which the expression needs to be evaluated.

In computer science, the time complexity is the computational complexity that measures or estimates the time taken for running an algorithm. time complexity is commonly estimated by counting the number of elementary operations performed by the algorithm, supposing that an elementary operation takes a fixed amount of time to perform.

Flowchart explanation of circuits

Basic to machine learning

Formulas

Type represents the kind of value and determines how the value can be used. all data values in python are encapsulated in relevant object classes. everything in python is an object and every object has an identity, a type, and a value. like another object-oriented language such as java or c++, there are several data types which are built into python. extension modules which are written in c, java, or other languages can define additional types.

Angularjs is a javascript framework that embraces extending html into a more expressive and readable format. it allows you to decorate your html with special markup that synchronizes with your javascript allowing you to write your application logic instead of manually updating views.

Rsa is one of the first public-key (asymmetric) cryptosystems and is widely used for secure data transmission. rsa stands for rivest-shamir-adleman, initial letters of the surnames of its creators. this asymmetry is based on the practical difficulty of the factorization of the product of two large prime numbers, the "factoring problem".

Cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. various aspects of information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography.

Arestful api(restfulwebservice), is based on representational state transfer(rest) technology, which is an architectural style and approach to communications often used in web services development.

In computer science, the time complexity is the computational complexity that measures or estimates the time taken for running an algorithm. time complexity is commonly estimated by counting the number of elementary operations performed by the algorithm, supposing that an elementary operation takes a fixed amount of time to perform.

We, humans, know how to interpret the infix notation, as that's what we are taught in schools.but this form is not very suitable for the computer to read and evaluate the expressions, because each operator has a precedence, which shows the order in which the expression needs to be evaluated.

Java program to find number of digits

C program to find number of digits

Program to find area and volume

Java program to check given number is even or odd

Java program to find average of numbers