Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Java ASAP
Decrypt a message that was encrypted using the following logic: • First the words in the sentence are reversed. For example, "welcome to hackerrank" becomes "hackerrank to welcome". • For each word, adjacent repeated letters are compressed in the format <character><frequency>. For example "mississippi" becomes "mis2is2ip2i" or "baaa" becomes "ba3". Note the format is not applied for characters wi frequency 1. Also, the frequency will be no greater than 9. Return the decrypted string. Example encrypted Message = 'world hel2o' Expand each word to get 'world hello'. Now reverse the words to get 'hello world', the return value. Function Description Complete the function decrypt in the editor below. decrypt has the following parameter(s): string encrypted Message: an encrypted string Returns string: the decrypted message Constraints • 1 s length of encrypted Messages 105 • Character frequency counts in the encrypted string will be 9 or less. • encrypted Message consists of words and spaces. Words consist of lower case English letters and digits from 0 to 9. ✓ Input Format For Custom Testing A single line of input consists of a string, encryptedMessage. ✓ Sample Case 0 Sample Input For Custom Testing seaside the to sent be to ne2ds army ten of team a Sample Output a team of ten army needs to be sent to the seaside ▾ Sample Case 1 Sample Input For Custom Testing a3b4q21 abcd2 abc Sample Output abc abcdd aaabbbbqqi Info Java 8 ✔ Autocomplete Ready Ⓒ
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Transcribed Image Text:Decrypt a message that was encrypted using the following logic: • First the words in the sentence are reversed. For example, "welcome to hackerrank" becomes "hackerrank to welcome". • For each word, adjacent repeated letters are compressed in the format <character><frequency>. For example "mississippi" becomes "mis2is2ip2i" or "baaa" becomes "ba3". Note the format is not applied for characters wi frequency 1. Also, the frequency will be no greater than 9. Return the decrypted string. Example encrypted Message = 'world hel2o' Expand each word to get 'world hello'. Now reverse the words to get 'hello world', the return value. Function Description Complete the function decrypt in the editor below. decrypt has the following parameter(s): string encrypted Message: an encrypted string Returns string: the decrypted message Constraints • 1 s length of encrypted Messages 105 • Character frequency counts in the encrypted string will be 9 or less. • encrypted Message consists of words and spaces. Words consist of lower case English letters and digits from 0 to 9. ✓ Input Format For Custom Testing A single line of input consists of a string, encryptedMessage. ✓ Sample Case 0 Sample Input For Custom Testing seaside the to sent be to ne2ds army ten of team a Sample Output a team of ten army needs to be sent to the seaside ▾ Sample Case 1 Sample Input For Custom Testing a3b4q21 abcd2 abc Sample Output abc abcdd aaabbbbqqi Info Java 8 ✔ Autocomplete Ready Ⓒ
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