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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
121 changed files with 697 additions and 0 deletions
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21
Ingegneria del Software/31/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 := x + (-1 + 2*myrandom());
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>

4
Ingegneria del Software/31/quest.txt Normal file
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L'input di un sistema software è costituito da una sequenza di valori reali. Ad ogni unità di tempo il valore di input può
rimanere uguale al precedente oppure differire di un numero random in [-1, 1]. L'input resta costante per numero random di
unità di tempo in [1, 10].
Quale dei seguenti modelli Modelica modella meglio l'environment descritto sopra.

21
Ingegneria del Software/31/wrong 2.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 := x + (-1 + 4*myrandom());
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>

21
Ingegneria del Software/31/wrong.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 := x - myrandom();
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>