在 Scala Stack class
,則contains()方法用於檢查是否在not的堆棧中存在某個元素。
函數定義: def contains(elem: A): Boolean
返回類型: It returns true if the element is present in the stack or else it returns false.
範例1:
// Scala program of contains()
// method
import scala.collection.mutable.Stack
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a stack
val s1 = Stack(1, 2, 3, 4, 5)
// Print the stack
println(s1)
// Applying contains method
val result = s1.contains(10)
// Display output
println("Stack contains element 10: " + result)
}
}
輸出:
Stack(1, 2, 3, 4, 5)
Stack contains element 10: false
範例2:
// Scala program of contains()
// method
import scala.collection.mutable.Stack
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a stack
val s1 = Stack("C++", "Java", "Python", "Scala")
// Print the stack
println(s1)
// Applying contains method
val result = s1.contains("Scala")
// Display output
println("Stack contains element Scala: " + result)
}
}
輸出:
Stack(C++, Java, Python, Scala)
Stack contains element Scala: true
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注:本文由純淨天空篩選整理自rupesh_rao大神的英文原創作品 Scala Stack contains() method with example。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。