Create 0349-intersection-of-two-arrays.java

Author: a93a

java/0349-intersection-of-two-arrays.java

@@ -0,0 +1,16 @@
+class Solution {
+    public int[] intersection(int[] nums1, int[] nums2) {
+        var seen = new HashSet<Integer>();
+        for (int n : nums1)
+            seen.add(n);
+
+        var res = new HashSet<Integer>();
+        for (int n : nums2) {
+            if (seen.contains(n)) {
+                res.add(n);
+            }
+        }
+
+        return res.stream().mapToInt(Integer::intValue).toArray();
+    }
+}