Answered: Let str be a string that contains any…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Let str be a string that contains any number of lower case letters from this set {a, b, c, .. z}. Samples of some valid str's are aabddd, bttttccd, cafffffgggaat etc.

Your program must validate the input (check whether it contains only lowercase letters) and create and print a new string (a copy of str) such that all repeated letters in str are replaced by the number of repeats followed by just one letter, i.e., aa will be replaced by 2a, bbb will be replaced by 3b, etc. Other (non-repeated) letters will remain same, For invalid inputs your program must generate an error message.

Some sample strings and the expected outputs are as follows.

Sample str = aabddd, expected output = 2ab3d

Sample str = bttttccd, expected output = b4t2cd

Sample str = caffgggaat, expected output = ca2f3g2at

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