the input consists of two integers x and y represented as strings of digits. The output is the sum z, also represented as a string of digits. The input can be viewed as a stream if the algorithm is first given the lowest digits of x and of y, then the second lowest, and so on. The algorithm outputs the characters of z as it proceeds. The only memory required is a single bit to store the carry bit. Because of these features, the algorithm can be modeled as a DFA. Write algorithm for Adding( )  pre-cond: The digits of two integers x and y are read in backwards in parallel.  post-cond: The digits of their sum will be outputted backwards.

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
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the input consists of two integers x and y represented as strings of digits. The output is the sum z, also represented as a string of digits. The input can be viewed as a stream if the algorithm is first given the lowest digits of x and of y, then the second lowest, and so on. The algorithm outputs the characters of z as it proceeds. The only memory required is a single bit to store the carry bit. Because of these features, the algorithm can be modeled as a DFA.
Write algorithm for Adding( )
 pre-cond: The digits of two integers x and y are read in backwards in parallel.
 post-cond: The digits of their sum will be outputted backwards.

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