a) Suppose we are trying to hide a secret message by embedding it in random extra letters. Write a function decode that takes a string called message and a list called key as parameters and returns a new string that represents the decoded text. key contains the index positions of the secret message in message. Example: For a message "KSGIAOELWIERUXOVPQIERCZXIETSQNBY" and key [3, 7, 14, 15, 19 ,21, 27] the function returns "ILOVECS" It is possible that the key contains numbers that are invalid index positions they greater than the length of message. These extra numbers should be ignored. Example: For a message "OK" and key [0, 1, 2, 3, 4] the function returns "OK"

a) Suppose we are trying to hide a secret message by embedding it in random extra letters. Write a function decode that takes a string called message and a list called key as parameters and returns a new string that represents the decoded text. key contains the index positions of the secret message in message. Example: For a message "KSGIAOELWIERUXOVPQIERCZXIETSQNBY" and key [3, 7, 14, 15, 19 ,21, 27] the function returns "ILOVECS" It is possible that the key contains numbers that are invalid index positions they greater than the length of message. These extra numbers should be ignored. Example: For a message "OK" and key [0, 1, 2, 3, 4] the function returns "OK"

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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