Java Collection, HashSet Exercises: Compare two hash set
Java Collection, HashSet Exercises: Exercise-10 with Solution
Write a Java program to compare two hash sets.
Sample Solution:
Java Code:
import java.util.*;
public class Exercise10 {
public static void main(String[] args) {
// Create a empty hash set
HashSet<String> h_set = new HashSet<String>();
// use add() method to add values in the hash set
h_set.add("Red");
h_set.add("Green");
h_set.add("Black");
h_set.add("White");
HashSet<String>h_set2 = new HashSet<String>();
h_set2.add("Red");
h_set2.add("Pink");
h_set2.add("Black");
h_set2.add("Orange");
//comparison output in hash set
HashSet<String>result_set = new HashSet<String>();
for (String element : h_set){
System.out.println(h_set2.contains(element) ? "Yes" : "No");
}
}
}
Sample Output:
Yes No Yes No
Pictorial Presentation:
Flowchart:

Java Code Editor:
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Previous: Convert a hash set to a List/ArrayList.
Next: Compare two sets and retain elements which are same on both sets.
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Java: Tips of the Day
getEnumMap
Converts to enum to Map where key is the name and value is Enum itself.
public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumClass) { return Arrays.stream(enumClass.getEnumConstants()) .collect(Collectors.toMap(Enum::name, Function.identity())); }
Ref: https://bit.ly/3xXcFZt
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