Ja ist eine stapelbasierte Sprache mit einigen durch Leerzeichen getrennten Anweisungen:
yes: Push 1 to the stack
no: Push 0 to the stack
what: Push the input to the stack (input is taken at the start of program execution and is the same for the whole execution)
sure: Increment the last item in the stack
nah: Decrement the last item in the stack
really: If the last stack item is a number, replace it with its Unicode character. If it is a letter, replace it with its Unicode char code.
oh: convert the stack to strings and concatenate it, and push that to the stack.
nope: remove the first stack item
yep: remove the last stack item
Das letzte Element des Stapels wird immer am Programmende ausgegeben. Alle nicht alphanumerischen und nicht Leerzeichen werden ignoriert. Der gesamte Code ist klein geschrieben. Beispielprogramme:
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
oh
druckt Hello, World!
.
what
druckt die Eingabe ( cat
Programm.)
no nah
druckt -1
.
no really
druckt das NUL
Zeichen ( U+0000
)
what
yes sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure sure really
oh
druckt die Eingabe und einen Unterstrich.
yes no nope
druckt 0
yes no yep
druckt 1
.
Sie müssen einen Interpreter in möglichst wenigen Bytes schreiben. Hier ist eine JS-Implementierung (nicht gut gespielt!):
function yes(code, input){
var stack = [];
var functions = {
"yes": "stack.push(1)",
"no": "stack.push(0)",
"what": "stack.push(input)",
"sure": "stack[stack.length - 1] ++",
"nah": "stack[stack.length - 1] --",
"really": "stack[stack.length - 1] = (typeof lastItem === 'number' ? String.fromCharCode(lastItem) : lastItem.charCodeAt())",
"oh": "stack.push(stack.reduce((x, y)=>''+x+y))",
"nope": "stack.shift()",
"yep": "stack.pop()"
};
code.replace(/[^a-z ]/g, "").split(" ").map(x=>(lastItem = stack[stack.length - 1],eval(functions[x])));
return stack[stack.length - 1];
}
textarea{
display: block;
}
Code: <textarea id = "code"></textarea>
Input: <textarea id = "input"></textarea>
<button onclick = "output.value = yes(code.value, input.value)">Run</button>
<textarea id = "output"></textarea>
Siehe auch meine JS-Antwort unten.
Sie können davon ausgehen, dass alle beteiligten Ganzzahlen kleiner oder gleich 126 sind, really
niemals mit einer Zeichenfolge mit mehreren Zeichen über dem Stapel ausgeführt werden und dass der Stapel niemals länger als 100 Elemente sein wird.
Randfälle
yes yes oh
druckt11
.- Die Eingabe kann eine Zeichenfolge oder eine Zahl sein.
- Der Code kann beliebige Zeichen enthalten. Nicht übereinstimmende
[a-z ]
sollten ignoriert werden.
really
es, wenn sich oben auf dem Stapel eine mehrstellige Zeichenfolge befindet?
yes yes oh
drucken 11
?
[a-zA-Z ]
?