1- Draw an NPDA for the following languages a) L= {a^b?n, n20} b) L= {a?nb^, n20} c) L= {ww*}, w={a,b}" d) L= {a^b?n, n20} U {ww*}, w={a,b} 2- Write CFG for the following languages a) L= {a^b?n, n20} b) L= {a?nb", n20}

1- Draw an NPDA for the following languages a) L= {a^b?n, n20} b) L= {a?nb^, n20} c) L= {ww}, w={a,b}" d) L= {a^b?n, n20} U {ww}, w={a,b} 2- Write CFG for the following languages a) L= {a^b?n, n20} b) L= {a?nb", n20}

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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Concept of Pointer Parameter

Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.

Question

1- Draw an NPDA for the following languages
a) L= {a*b?n, n20}
b) L= {a?nb^, n20}
c) L= {ww*}, w={a,b}"
d) L= {a^b?n, n20} U {ww*}, w={a,b}"
2- Write CFG for the following languages
a)
L= {a^b?n, n20}
b)
L= {a?^b", n20}
c)
L= {ww*}, w={a,b}
d)
L= {a^b?n, n20} U {ww*}, w={a,b}"

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