add 1108

Author: fishercoder1534

README.md

@@ -28,6 +28,7 @@ _If you like this project, please leave me a star._ ★
 |1122|[Relative Sort Array](https://leetcode.com/problems/relative-sort-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1122.java) | O(n) | O(n) | |Easy||
 |1170|[Compare Strings by Frequency of the Smallest Character](https://leetcode.com/problems/compare-strings-by-frequency-of-the-smallest-character/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1170.java) | | | |Easy||
 |1119|[Remove Vowels from a String](https://leetcode.com/problems/remove-vowels-from-a-string/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1119.java) | | | [:tv:](https://www.youtube.com/watch?v=6KCBrIWEauw)|Easy||
+|1108|[Defanging an IP Address](https://leetcode.com/problems/defanging-an-ip-address/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1108.java) | | | |Easy||
 |1099|[Two Sum Less Than K](https://leetcode.com/problems/two-sum-less-than-k/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1099.java) | |  | [:tv:](https://www.youtube.com/watch?v=2Uq7p7HE0TI)|Easy||
 |1089|[Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1089.java) | O(n^2) | O(1) | |Easy||
 |1086|[High Five](https://leetcode.com/problems/high-five/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1086.java) | | | [:tv:](https://www.youtube.com/watch?v=3iqC5J4l0Cc)|Easy||

src/main/java/com/fishercoder/solutions/_1108.java

@@ -0,0 +1,34 @@
+package com.fishercoder.solutions;
+
+/**
+ * 1108. Defanging an IP Address
+ *
+ * Given a valid (IPv4) IP address, return a defanged version of that IP address.
+ * A defanged IP address replaces every period "." with "[.]".
+ *
+ * Example 1:
+ * Input: address = "1.1.1.1"
+ * Output: "1[.]1[.]1[.]1"
+ *
+ * Example 2:
+ * Input: address = "255.100.50.0"
+ * Output: "255[.]100[.]50[.]0"
+ *
+ * Constraints:
+ * The given address is a valid IPv4 address.
+ * */
+public class _1108 {
+    public static class Solution1 {
+        public String defangIPaddr(String address) {
+            //String.replaceAll() takes in a regex which needs to be escaped
+            return address.replaceAll("\\.", "\\[\\.\\]");
+        }
+    }
+
+    public static class Solution2 {
+        public String defangIPaddr(String address) {
+            //String.replace() takes in a string which does NOT need to be escaped
+            return address.replace(".", "[.]");
+        }
+    }
+}

src/test/java/com/fishercoder/_1108Test.java

@@ -0,0 +1,30 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._1108;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _1108Test {
+    private static _1108.Solution1 solution1;
+    private static _1108.Solution2 solution2;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _1108.Solution1();
+        solution2 = new _1108.Solution2();
+    }
+
+    @Test
+    public void test1() {
+        assertEquals("1[.]1[.]1[.]1", solution1.defangIPaddr("1.1.1.1"));
+        assertEquals("1[.]1[.]1[.]1", solution2.defangIPaddr("1.1.1.1"));
+    }
+
+    @Test
+    public void test2() {
+        assertEquals("255[.]100[.]50[.]0", solution1.defangIPaddr("255.100.50.0"));
+        assertEquals("255[.]100[.]50[.]0", solution2.defangIPaddr("255.100.50.0"));
+    }
+}