Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- a) L= {anb²n, n>0} b) L= {a²nb, n>0} c) L= {ww], w={a,b}* d) L= {anb²n, n20} U {ww}, w={a,b}* Home work 1- Draw an NPDA for the following languages e) L= {a^b²n, n20} f) L= {a²nb", n>0} g) L= {ww), w={a,b}* h) L= {anb²n, n20} U {ww}, w={a,b}* 2- Write CFG for the following languages a) L= {anb²n, n>0} L= {a²nb", n>0} L= {ww}, w={a,b}* L= {anb²n, n>0} U {ww}, w={a,b}* b) c) d)arrow_forwardcode in ada with Ada.Numerics.Generic_Elementary_Functions; package body Number_Theory is -- Instantiate the library for floating point math using Floating_Type. package Floating_Functions is new Ada.Numerics.Generic_Elementary_Functions(Floating_Type); use Floating_Functions; function Factorial(N : in Factorial_Argument_Type) return Positive is begin -- TODO: Finish me! -- -- 0! is 1 -- N! is N * (N-1) * (N-2) * ... * 1 return 1; end Factorial; function Is_Prime(N : in Prime_Argument_Type) return Boolean is Upper_Bound : Prime_Argument_Type; Current_Divisor : Prime_Argument_Type; begin -- Handle 2 as a special case. if N = 2 then return True; end if; Upper_Bound := N - 1; Current_Divisor := 2; while Current_Divisor < Upper_Bound loop if N rem Current_Divisor = 0 then return False; end if; Upper_Bound := N / Current_Divisor; end loop;…arrow_forwardPrinciples of programming languages: The C selection statement using EBNF is: <selection> → if ( <expression> ) <statement> [else <statement>] ; Without the brackets, how many BNF rules would describe this C selection statement? a. 3 b. 2 c. 4 d. 1arrow_forward
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