Created
February 25, 2015 17:10
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Busca recusiva em grafo binario
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object Main extends App { | |
case class Vertice(valor: Int, esquerda: Option[Vertice], direita: Option[Vertice]) { | |
override def toString = valor.toString | |
} | |
val v1 = Vertice(10,None,None) | |
val v3 = Vertice(30,None,None) | |
val v2 = Vertice(5,Some(v3),None) | |
val root = Vertice(3,Some(v1), Some(v2)) | |
def imprimeGrafo(vertice: Vertice): Unit = { | |
def recurse(v: Option[Vertice]): Unit = { | |
if(v.isEmpty){ | |
println("folha") | |
}else { | |
println(v.get.valor) | |
recurse(v.get.esquerda) | |
recurse(v.get.direita) | |
} | |
} | |
recurse(Some(vertice)) | |
} | |
def localiza(vertice: Option[Vertice], valor: Int): Boolean = { | |
println(s"in vertice $vertice") | |
if(vertice.isEmpty) | |
false | |
else if(vertice.get.valor == valor) true | |
else { | |
localiza(vertice.get.esquerda, valor) || localiza(vertice.get.direita, valor) | |
} | |
} | |
imprimeGrafo(root) | |
println("=== Localizando 30") | |
println(localiza(Some(root),30)) | |
println("=== Localizando 10") | |
println(localiza(Some(root), 10)) | |
println("=== Localizando -1") | |
println(localiza(Some(root), -1)) | |
} |
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