add 1704

fishercoder1534 · fishercoder1534 · commit d17680c3d91c · 2020-12-27T09:16:31.000-08:00
diff --git a/README.md b/README.md
@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ &#9733;
 
 |  #  |      Title     |   Solutions   | Video  | Difficulty  | Tag                   
 |-----|----------------|---------------|--------|-------------|-------------
+|1704|[Determine if String Halves Are Alike](https://leetcode.com/problems/determine-if-string-halves-are-alike/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1704.java) ||Easy|String|
 |1700|[Number of Students Unable to Eat Lunch](https://leetcode.com/problems/number-of-students-unable-to-eat-lunch/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1700.java) ||Easy|Array|
 |1694|[Reformat Phone Number](https://leetcode.com/problems/reformat-phone-number/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1694.java) ||Easy|String|
 |1690|[Stone Game VII](https://leetcode.com/problems/stone-game-vii/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1690.java) ||Medium|DP|
diff --git a/src/main/java/com/fishercoder/solutions/_1704.java b/src/main/java/com/fishercoder/solutions/_1704.java
@@ -0,0 +1,17 @@
+package com.fishercoder.solutions;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.IntStream;
+
+public class _1704 {
+    public static class Solution1 {
+        public boolean halvesAreAlike(String s) {
+            Set<Character> vowels = new HashSet<>(Arrays.asList('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'));
+            int firstHalfVowelsCount = (int) IntStream.range(0, s.length() / 2).filter(i -> vowels.contains(s.charAt(i))).count();
+            int secondHalfVowelsCount = (int) IntStream.range(s.length() / 2, s.length()).filter(i -> vowels.contains(s.charAt(i))).count();
+            return firstHalfVowelsCount == secondHalfVowelsCount;
+        }
+    }
+}
