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Add 21-50 question of 01/22

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Lorenzo 2022-11-02 09:13:43 +01:00
parent 604c2269b6
commit 5c561b5538
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21
Ingegneria del Software/34/correct.txt Normal file
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<pre>
block MarkovChain
//external function myrandom() returns a random real number in [0, 1]
parameter Real x0 = 0;
OutputReal x;
Integer countdown;
algorithm
when initial() then
x := x0;
countdown := 0;
elsewhen sample(0, 1) then
if (countdown <= 0)
then
countdown := 1 + integer(floor(10*myrandom()));
x := 1 - pre(x);
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>

3
Ingegneria del Software/34/quest.txt Normal file
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L'input di un sistema software è costituito da una sequenza di 0 (false) ed 1 (true). Ad uno 0 segue un 1 ed ad un 1 segue uno 0.
Il tempo tra un valore di input e l'altro è un valore random compreso tra 1 e 10 unità di tempo.
Quale dei seguenti modelli Modelica modella meglio l'environment descritto sopra.

22
Ingegneria del Software/34/wrong 2.txt Normal file
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block MarkovChain
//external function myrandom() returns a random real number in [0, 1]
parameter Real x0 = 0;
OutputReal x;
Integer countdown;
algorithm
when initial() then
x := x0;
countdown := 0;
elsewhen sample(0, 10) then
if (countdown <= 0)
then
countdown := 1 + integer(floor(myrandom()));
x := 1 - pre(x);
Domanda 35
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Punteggio max.: 1,00
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;

19
Ingegneria del Software/34/wrong.txt Normal file
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block MarkovChain
//external function myrandom() returns a random real number in [0, 1]
parameter Real x0 = 0;
OutputReal x;
Integer countdown;
algorithm
when initial() then
x := x0;
countdown := 0;
elsewhen sample(0, 1) then
if (countdown >= 0)
then
countdown := 1 + integer(floor(10*myrandom()));
x := 1 - pre(x);
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;