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                                                                                        Graph Theory Graph Theory is ultimately the study of relationships. Given a set of nodes & connections, which can abstract anything from city layouts to computer data, graph theory  provides a helpful tool to quantify & simplify the many moving parts of dynamic systems Weighted vs Unweighted Graph Weighted graphs add additional information to the relationship between two nodes. This is done by assigning a numeric value to the edge  the line that connects the two nodes. This value could represent the distance or how  two nodes are connected. A real world example of a weighted gra...
                                                                                                                                                     Number of Theory                                                             Solution of 1086. Cryptography While preparing this problem set the jury has run into the following problem: it was necessary to send by e-mail the texts of the prob...
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                                               Cryptography with Python  Cryptography is the art of communication between two users via coded messages. The science of cryptography emerged with the basic motive of providing security to the confidential messages transferred from one party to another. Cryptography is defined as the art and science of concealing the message to introduce privacy and secrecy as recognized in information security. Terminologies of Cryptography The frequently used terms in cryptography are explained here − Plain Text The plain text message is the text which is readable and can be understood by all users. The plain text is the message which undergoes cryptography. Cipher Text Cipher text is the message obtained after applying cryptography on plain text. Encryption The process of converting plain text to cipher text is c...