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| //Ejercicio 2P2014-E02B; | |
| // Dado un árbol n-ario de caracteres, determinar mediante | |
| // una función si algún nodo formaba con sus hijos | |
| // exactamente la palabra C A S A (en ese orden). | |
| function busCasa(p:posicion; A:tArbol):boolean; | |
| var | |
| c: posicion; | |
| casa: string; | |
| begin | |
| casa:= 'CASA'; | |
| if nulo(p) then begin | |
| // caso no recursivo | |
| busCASA:= false; | |
| end | |
| else begin | |
| c:= hijo_mas_izq(p, A); | |
| // comprobacion casa | |
| i:= 1; | |
| cumple:= true; | |
| while cumple and (i<=5) do begin | |
| if i<5 then begin | |
| if casa[i]=info(c, A) then | |
| i:= i+1 | |
| else | |
| cumple:= false; | |
| end | |
| else begin //es casa | |
| if nulo(c)=nil then | |
| i:= i+1 //si cumple salgo del while | |
| else | |
| cumple:= false; | |
| end | |
| //avanzar | |
| c:= hno_der(c,A); | |
| end | |
| if cumple and (i=6) then | |
| busCasa:= true | |
| else | |
| // recursividad, verifico cond. en hijos | |
| c:= hijo_mas_izq(p, a); | |
| while not nulo(c) then begin | |
| auxBool:= auxBool or busCasa(c, A); | |
| c:= hno_der(c, A); | |
| end | |
| busCasa:= auxBool; | |
| end | |
| end |
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