From c860a376e7a6cc50cb31fecb7ee4867080fe01bf Mon Sep 17 00:00:00 2001
From: Kate <119519512+Youta-Joy@users.noreply.github.com>
Date: Tue, 24 Jun 2025 17:03:33 +0300
Subject: [PATCH] =?UTF-8?q?=D0=A0=D0=B5=D1=88=D0=B5=D0=BD=D0=B8=D0=B5=20?=
 =?UTF-8?q?=D0=B7=D0=B0=D0=B4=D0=B0=D1=87=D0=B8=202?=
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---
 .../Solution.java"                            | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git "a/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_3/Solution.java" "b/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_3/Solution.java"
index 3b56bed..ad76681 100644
--- "a/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_3/Solution.java"
+++ "b/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_3/Solution.java"
@@ -1,7 +1,39 @@
 package com.school.faang.hashset.задача_3;
 
+import java.util.HashSet;
+import java.util.Set;
+
 public class Solution {
     public static void main(String[] args) {
+        Set<String> firstUserContacts = Set.of(
+                "Alisa",
+                "David",
+                "Zack",
+                "Mike",
+                "Luck"
+        );
+
+        Set<String> secondUserContacts = Set.of(
+                "Tina",
+                "Toona",
+                "Moona",
+                "Zack",
+                "Luck"
+        );
+
+        Set<String> mutualContacts = MutualContactsFinder.findMutualContacts(firstUserContacts, secondUserContacts);
+
+        System.out.println(mutualContacts.size());
+        System.out.println(mutualContacts);
+    }
+}
+
+class MutualContactsFinder {
+    public static HashSet<String> findMutualContacts(Set<String> contacts1, Set<String> contacts2) {
+        HashSet<String> mutuals = new HashSet<>(contacts1);
+
+        mutuals.retainAll(contacts2);
 
+        return mutuals;
     }
 }