ConvertToBinary: Unterschied zwischen den Versionen

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=== Beispiele ===
=== Beispiele ===
==== Standardfälle ====
==== Standardfälle ====
  convertToBinary(15)  --> returns '1111'
convertToBinary(15)  --> returns '1111'
  convertToBinary(3)    --> returns '11'
  convertToBinary(-3)  --> returns '11111111111111111111111111111101'
convertToBinary(3)    --> returns '11'
  convertToBinary(1.2)  --> returns '11111111110011001100110011001100110011001100110011001100110011'
  convertToBinary(-1.2) --> returns '1011111111110011001100110011001100110011001100110011001100110011'
convertToBinary(-3)  --> returns '11111111111111111111111111111101'
convertToBinary(1.2)  --> returns '11111111110011001100110011001100110011001100110011001100110011'
convertToBinary(-1.2) --> returns '1011111111110011001100110011001100110011001100110011001100110011'


==== Benutzung von Variablen ====
==== Benutzung von Variablen ====
  convertToBinary('[pos=1]')
  convertToBinary('[pos=1]')
  convertToBinary('[var=a]')
  convertToBinary('[var=a]')
====JUnit Tests====
<span class="mw-customtoggle-myDivision">[Anzeigen]</span>
<syntaxhighlight lang="java" class="mw-collapsible mw-collapsed" id="mw-customcollapsible-myDivision">
@BeforeClass
public static void beforeTest() {
fillInVariableMap.put(2, OMConverter.toObject("<OMOBJ><OMI>7</OMI></OMOBJ>"));
exerciseVariableMap.put("b", OMConverter.toObject("<OMOBJ><OMI>7</OMI></OMOBJ>"));
}
@Test
public void testConvertToBinary1() {
assertEquals(OMCreator.createOMSTR("10"),
Evaluator.evaluate("convertToBinary(2)", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test
public void testConvertToBinary2() {
assertEquals(OMCreator.createOMSTR("1101101111"),
Evaluator.evaluate("convertToBinary(879)", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test
public void testConvertToBinary3() {
assertNotEquals(OMCreator.createOMSTR("-11"),
Evaluator.evaluate("convertToBinary(-3)", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test
public void testConvertToBinaryWithInput1() {
assertEquals(OMCreator.createOMSTR("111"),
Evaluator.evaluate("convertToBinary([pos=2])", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test
public void testConvertToBinaryWithInput2() {
assertEquals(OMCreator.createOMSTR("0"),
Evaluator.evaluate("convertToBinary([pos=1])", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test
public void testConvertToBinaryWithVariables1() {
assertEquals(OMCreator.createOMSTR("0"),
Evaluator.evaluate("convertToBinary([var=a])", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test
public void testConvertToBinaryWithVariables2() {
assertEquals(OMCreator.createOMSTR("111"),
Evaluator.evaluate("convertToBinary([var=b])", exerciseVariableMap, fillInVariableMap).getOMSTR());
}
@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testConvertToBinaryWithWrongInputCharacter() {
Evaluator.evaluate("convertToBinary(a)", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testConvertToBinaryWithTwoArguments() {
Evaluator.evaluate("convertToBinary(3, 2)", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testConvertToBinaryWithThreeArguments() {
Evaluator.evaluate("convertToBinary(1, 2, 3)", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = UndefinedExerciseVariableException.class)
public void testConvertToBinaryWithMissingExcerciseVariable() {
Evaluator.evaluate("convertToBinary([var=j])", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = UndefinedFillInVariableException.class)
public void testConvertToBinaryWithMissingInput() {
Evaluator.evaluate("convertToBinary([pos=42])", exerciseVariableMap, fillInVariableMap);
fail();
}
</syntaxhighlight>


=== Hinweise ===
=== Hinweise ===

Version vom 24. September 2018, 12:53 Uhr

Beschreibung

Die Funktion convertToBinary wandelt Ganzzahlen und Gleitkommazahlen in ihre entsprechende Binärdarstellung um. Die Rückgabe ist eine Zeichenkette.

  • Negative Gleitkommazahlen werden nach dem IEEE_754 Standard konvertiert, d.h. es gibt immer 64 Stellen.
  • Negative Ganzzahlen werden immer mit 32 Stellen dargestellt.

Syntax

convertToBinary(Ganzzahl zahl)

Parameter

  • zahl - die Dezimaldarstellung der Zahl, die in Binär umgewandelt werden soll

Return Value

  • Gibt eine Ganzzahl zurück

Beispiele

Standardfälle

convertToBinary(15)   --> returns '1111'

convertToBinary(3)    --> returns '11'

convertToBinary(-3)   --> returns '11111111111111111111111111111101'

convertToBinary(1.2)  --> returns '11111111110011001100110011001100110011001100110011001100110011'

convertToBinary(-1.2) --> returns '1011111111110011001100110011001100110011001100110011001100110011'

Benutzung von Variablen

convertToBinary('[pos=1]')

convertToBinary('[var=a]')

Hinweise

  • Für negative Zahlen wird das Zweierkomplement zurückgegeben.
Abgerufen von „https://wiki.uni-due.de/jack/index.php?title=ConvertToBinary&oldid=2746“