Write the context-free grammars for the following languages. 1. The set of strings of a's and b's that contain the same number of a's and b's (in any order).

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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Write the context-free grammars for the following languages.
1. The set of strings of a's and b's that contain the same number of a's and b's (in any order).
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2. L = {a* b° a | z =x+y}, that is the set of strings of x number of a's followed by y number of b's and
then followed by z number of a's, satisfying the condition z =x+y.
Transcribed Image Text:Write the context-free grammars for the following languages. 1. The set of strings of a's and b's that contain the same number of a's and b's (in any order). | 2. L = {a* b° a | z =x+y}, that is the set of strings of x number of a's followed by y number of b's and then followed by z number of a's, satisfying the condition z =x+y.
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