881452. Unordered Set Size Function
Basic
Unordered Set Size Function
Slug: unordered-set-size-function--110845
Difficulty: Basic
Id: 881452
Topic Tags: STL
Company Tags: None
Summary
Given an unordered set, write a function to find its size. This problem involves understanding the usage of the unordered_set data structure and its methods.
Detailed Explanation
To solve this problem, we can use the size() method provided by the unordered_set class in the Standard Template Library (STL). This method returns the number of elements in the set.
Here's a step-by-step breakdown of the solution:
- Include the necessary header files (
<unordered_set>and<algorithm>) for using theunordered_setdata structure. - Create an instance of the
unordered_setclass with the desired elements. - Use the
size()method to get the number of elements in the set.
Here's a sample code snippet:
import java.util.HashSet;
public class UnorderedSetSizeFunction {
public static int sizeFunction(HashSet<Integer> mySet) {
return mySet.size();
}
}