Stack containsAll() method in Java with Example
Last Updated :
24 Dec, 2018
The containsAll() method of Java Stack is used to check whether two stacks contain the same elements or not. It takes one stack as a parameter and returns True if all of the elements of this stack is present in the other stack.
Syntax:
public boolean containsAll(Collection C)
Parameters: The parameter C is a Collection. This parameter refers to the stack whose elements occurrence is needed to be checked in this stack.
Return Value: The method returns True if this stack contains all the elements of other stack otherwise it returns False.
Below programs illustrate the Stack.containsAll() method:
Program 1:
import java.util.*;
class StackDemo {
public static void main(String args[])
{
Stack<String>
stack = new Stack<String>();
stack.add( "Geeks" );
stack.add( "for" );
stack.add( "Geeks" );
stack.add( "10" );
stack.add( "20" );
System.out.println( "Stack 1: "
+ stack);
Stack<String>
stack2 = new Stack<String>();
stack2.add( "Geeks" );
stack2.add( "for" );
stack2.add( "Geeks" );
stack2.add( "10" );
stack2.add( "20" );
System.out.println( "Stack 2: "
+ stack2);
System.out.println( "\nDoes stack 1 contains stack 2: "
+ stack.containsAll(stack2));
}
}
|
Output:
Stack 1: [Geeks, for, Geeks, 10, 20]
Stack 2: [Geeks, for, Geeks, 10, 20]
Does stack 1 contains stack 2: true
Program 2:
import java.util.*;
class StackDemo {
public static void main(String args[])
{
Stack<String>
stack = new Stack<String>();
stack.add( "Geeks" );
stack.add( "for" );
stack.add( "Geeks" );
System.out.println( "Stack 1: "
+ stack);
Stack<String>
stack2 = new Stack<String>();
stack2.add( "10" );
stack2.add( "20" );
System.out.println( "Stack 2: "
+ stack2);
System.out.println( "\nDoes stack 1 contains stack 2: "
+ stack.containsAll(stack2));
}
}
|
Output:
Stack 1: [Geeks, for, Geeks]
Stack 2: [10, 20]
Does stack 1 contains stack 2: false
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