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Question 2: Encoding Cryptography is the study of trying to create secure information by obscuring the original message. One simple encryption method is to substitute letters f decrypt the hidden message, we may also remove clues such as the length of the words in the message and any punctuation or capitalization. Write a function encode that consumes a string message. The function produces a string which is encrypted according the following procedure: • Only the letters from the original message will be encrypted. Other characters such as spaces, punctuation, numeric digits, etc. are not included • The encrypted message will only contain uppercase letters. • Each letter will be replaced by the uppercase letter at the opposite end of the English alphabet. In other words, A or a will become Z, B or b will become Y. c orc will become X. .. z or z will become A. • The encrypted message will have a single space separating each letter. You may assume that the letters in message are English letters only. For example: 1 > (encpde "Cat") 2 "X Z G" > (encode "A") 4 "" 5 > (encode "Is this correct?") 6 "R HGSRHXLIIV X G" Additional Restrictions

Question 2: Encoding Cryptography is the study of trying to create secure information by obscuring the original message. One simple encryption method is to substitute letters f decrypt the hidden message, we may also remove clues such as the length of the words in the message and any punctuation or capitalization. Write a function encode that consumes a string message. The function produces a string which is encrypted according the following procedure: • Only the letters from the original message will be encrypted. Other characters such as spaces, punctuation, numeric digits, etc. are not included • The encrypted message will only contain uppercase letters. • Each letter will be replaced by the uppercase letter at the opposite end of the English alphabet. In other words, A or a will become Z, B or b will become Y. c orc will become X. .. z or z will become A. • The encrypted message will have a single space separating each letter. You may assume that the letters in message are English letters only. For example: 1 > (encpde "Cat") 2 "X Z G" > (encode "A") 4 "" 5 > (encode "Is this correct?") 6 "R HGSRHXLIIV X G" Additional Restrictions

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question 2: Encoding Cryptography is the study of trying to create secure information by obscuring the original message. One simple encryption method is to substitute letters from the original message with other letters. To make it harder to decrypt the hidden message, we may also remove clues such as the length of the words in the message and any punctuation or capitalization. Write a function encode that consumes a string message. The function produces a string which is encrypted according the following procedure: * Only the letters from the original message will be encrypted. Other characters such as spaces, punctuation, numeric digits, etc. are not included in the encrypted message at all. * The encrypted message will only contain uppercase letters. * Each letter will be replaced by the uppercase letter at the opposite end of the English alphabet. In other words, A or a will become Z, B or b will become Y, C or c will become X, ..., Z or z will become A. * The encrypted message will have a single space separating each letter. You may assume that the letters in message are English letters only. For example: 1 2 3 4 5 6 > (encode "Cat") "X Z G" > (encode "A") "Z" > (encode "Is this correct?") "R H G S R H X L I I V X G" > (encode "Cat") "X Z G" > (encode "A") "Z" > (encode "Is this correct?") "R H G S R H X L I I V X G"
Question 2: Encoding Cryptography is the study of trying to create secure information by obscuring the original message. One simple encryption method is to substitute letters frc decrypt the hidden message, we may also remove clues such as the length of the words in the message and any punctuation or capitalization. Write a function encode that consumes a string message. The function produces a string which is encrypted according the following procedure: • Only the letters from the original message will be encrypted. Other characters such as spaces, punctuation, numeric digits, etc. are not included ir • The encrypted message will only contain uppercase letters. • Each letter will be replaced by the uppercase letter at the opposite end of the English alphabet. In other words, A or a will become Z. B or b will become Y. c orc will become x. .. z or z will become A. • The encrypted message will have a single space separating each letter. You may assume that the letters in message are English letters only. For example: 1 > (encpde "Cat") 2 "X Z G" 3 > (encode "A") 4 "Z" 5 > (encode "Is this correct?") 6 "R H G SRH XLI IV X G" Additional Restrictions • For this question you are only allowed to define one named function: encode. You may define local constants. There will be severe correctness mark pen functions. • You may use lambda expressions in your solution within the application of other functions. However remember that an ounr
Transcribed Image Text:Question 2: Encoding Cryptography is the study of trying to create secure information by obscuring the original message. One simple encryption method is to substitute letters frc decrypt the hidden message, we may also remove clues such as the length of the words in the message and any punctuation or capitalization. Write a function encode that consumes a string message. The function produces a string which is encrypted according the following procedure: • Only the letters from the original message will be encrypted. Other characters such as spaces, punctuation, numeric digits, etc. are not included ir • The encrypted message will only contain uppercase letters. • Each letter will be replaced by the uppercase letter at the opposite end of the English alphabet. In other words, A or a will become Z. B or b will become Y. c orc will become x. .. z or z will become A. • The encrypted message will have a single space separating each letter. You may assume that the letters in message are English letters only. For example: 1 > (encpde "Cat") 2 "X Z G" 3 > (encode "A") 4 "Z" 5 > (encode "Is this correct?") 6 "R H G SRH XLI IV X G" Additional Restrictions • For this question you are only allowed to define one named function: encode. You may define local constants. There will be severe correctness mark pen functions. • You may use lambda expressions in your solution within the application of other functions. However remember that an ounr
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