maxim.derksen/rechenmaschine
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Implemented Subtraction

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Maxim Derksen
2021-04-19 09:44:27 +02:00
parent bdfd32c24a
commit 5260cdb1f3
2 changed files with 121 additions and 103 deletions
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44
Rechenmaschine.java
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@@ -70,20 +70,27 @@ public class Rechenmaschine {
case '+':
fehler = "Fehler im Wort " +pEingabe+ ":\nDas Wort darf nicht mit + beginnen!";
return false;
case '-':
fehler = "Fehler im Wort " +pEingabe+ ":\nDas Wort darf nicht mit - beginnen!";
return false;
default:
fehler = "Fehler im Wort " +pEingabe+ ":\nDer Buchstabe " + buchstabe + " gehört nicht zur Sprache!";
return false;
}
break;
case 1:
switch( buchstabe ) {
case '+':
tokenlist.append(new Token("OPERAND", currentToken));
currentToken = "";
tokenlist.append(new Token("OPERATOR"));
tokenlist.append(new Token("OPERATOR", "+"));
state = 0;
break;
case '-':
tokenlist.append(new Token("OPERAND", currentToken));
currentToken = "";
tokenlist.append(new Token("OPERATOR", "-"));
state = 0;
break;
@@ -107,16 +114,18 @@ public class Rechenmaschine {
}
break;
case 2:
switch( buchstabe ) {
case '+':
tokenlist.append(new Token("OPERATOR"));
tokenlist.append(new Token("OPERATOR","+"));
state = 0;
break;
case '-':
tokenlist.append(new Token("OPERATOR","-"));
state = 0;
break;
default:
fehler = "Fehler im Wort " +pEingabe+ ":\nNach 0 am Anfang muss ein + folgen!";
fehler = "Fehler im Wort " +pEingabe+ ":\nNach 0 am Anfang muss ein + oder ein - folgen!";
return false;
}
break;
@@ -153,7 +162,6 @@ public class Rechenmaschine {
}
break;
case 1:
if( currentToken.getType().equals("OPERATOR") ) {
state = 0;
@@ -180,15 +188,25 @@ public class Rechenmaschine {
public void run() {
result = 0;
int state = 0;
tokenlist.toFirst();
while( tokenlist.hasAccess() ) {
Token currentToken = tokenlist.getContent();
if( currentToken.getType().equals("OPERAND") ) {
result += Integer.parseInt(currentToken.getToken());
if( currentToken.getType().equals("OPERATOR")){
if(currentToken.getToken().equals("+")){
state = 0;
} else if(currentToken.getToken().equals("-")){
state = 1;
}
}
else if( currentToken.getType().equals("OPERAND") ) {
if(state == 0){
result += Integer.parseInt(currentToken.getToken()); //Konvertiert den String in ein Integer und rechnet es dem Result hinzu
}
else if(state == 1){
result -= Integer.parseInt(currentToken.getToken()); //Konvertiert den String in ein Integer und zieht es dem Result ab
}
}
tokenlist.next();
}
}

30
package.bluej
View File

@@ -5,18 +5,18 @@ dependency1.type=UsesDependency
dependency2.from=Rechenmaschine
dependency2.to=Token
dependency2.type=UsesDependency
editor.fx.0.height=738
editor.fx.0.width=816
editor.fx.0.x=466
editor.fx.0.y=146
objectbench.height=66
editor.fx.0.height=1416
editor.fx.0.width=2576
editor.fx.0.x=-8
editor.fx.0.y=-8
objectbench.height=111
objectbench.width=1256
package.divider.horizontal=0.6
package.divider.vertical=0.9099876695437731
package.editor.height=731
package.editor.width=1157
package.editor.x=100
package.editor.y=25
package.divider.vertical=0.847741935483871
package.editor.height=650
package.editor.width=1145
package.editor.x=410
package.editor.y=334
package.frame.height=875
package.frame.width=1296
package.numDependencies=2
@@ -33,8 +33,8 @@ target1.height=50
target1.name=List
target1.showInterface=false
target1.type=ClassTarget
target1.width=130
target1.x=300
target1.width=150
target1.x=450
target1.y=70
target2.height=50
target2.name=Token
@@ -47,6 +47,6 @@ target3.height=50
target3.name=Rechenmaschine
target3.showInterface=false
target3.type=ClassTarget
target3.width=120
target3.x=170
target3.y=210
target3.width=130
target3.x=220
target3.y=180