diff --git a/src/main/java/com/zipcodewilmington/looplabs/IntegerDuplicateDeleter.java b/src/main/java/com/zipcodewilmington/looplabs/IntegerDuplicateDeleter.java
index ee550c5..7650db3 100644
--- a/src/main/java/com/zipcodewilmington/looplabs/IntegerDuplicateDeleter.java
+++ b/src/main/java/com/zipcodewilmington/looplabs/IntegerDuplicateDeleter.java
@@ -1,8 +1,29 @@
 package com.zipcodewilmington.looplabs;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.stream.Collectors;
+
 /**
  * Created by leon on 1/29/18.
  * @ATTENTION_TO_STUDENTS You are forbidden from modifying the signature of this class.
  */
 public final class IntegerDuplicateDeleter extends DuplicateDeleter<Integer> {
+    public IntegerDuplicateDeleter(Integer[] intArray) {
+        super(intArray);
+    }
+
+    @Override
+    public Integer[] removeDuplicates(int maxNumberOfDuplications) {
+        return Arrays.stream(array)
+                .filter(j -> Collections.frequency(Arrays.asList(array), j) < maxNumberOfDuplications)
+                .toArray(Integer[]::new);
+    }
+
+    @Override
+    public Integer[] removeDuplicatesExactly(int exactNumberOfDuplications) {
+        return Arrays.stream(array)
+                .filter(j -> Collections.frequency(Arrays.asList(array), j) != exactNumberOfDuplications)
+                .toArray(Integer[]::new);
+    }
 }
diff --git a/src/main/java/com/zipcodewilmington/looplabs/StringDuplicateDeleter.java b/src/main/java/com/zipcodewilmington/looplabs/StringDuplicateDeleter.java
index 4818fe3..eeb1d6e 100644
--- a/src/main/java/com/zipcodewilmington/looplabs/StringDuplicateDeleter.java
+++ b/src/main/java/com/zipcodewilmington/looplabs/StringDuplicateDeleter.java
@@ -1,8 +1,30 @@
 package com.zipcodewilmington.looplabs;
 
+import java.util.Arrays;
+import java.util.Collections;
+
 /**
  * Created by leon on 1/28/18.
  * @ATTENTION_TO_STUDENTS You are forbidden from modifying the signature of this class.
  */
 public final class StringDuplicateDeleter extends DuplicateDeleter<String> {
+    public StringDuplicateDeleter(String[] intArray) {
+        super(intArray);
+    }
+
+    @Override
+    public String[] removeDuplicates(int maxNumberOfDuplications) {
+
+        return Arrays.stream(array)
+                .filter(j -> Collections.frequency(Arrays.asList(array), j) < maxNumberOfDuplications)
+                .toArray(String[]::new);
+    }
+
+    @Override
+    public String[] removeDuplicatesExactly(int exactNumberOfDuplications) {
+
+        return Arrays.stream(array)
+                .filter(j -> Collections.frequency(Arrays.asList(array), j) != exactNumberOfDuplications)
+                .toArray(String[]::new);
+    }
 }