| # | 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|

packagecom.fishercoder.solutions;

importjava.util.Arrays;

importjava.util.HashSet;

importjava.util.Set;

importjava.util.stream.IntStream;

publicclass_1704 {

publicstaticclassSolution1 {

publicbooleanhalvesAreAlike(Strings) {

Set<Character>vowels =newHashSet<>(Arrays.asList('a','e','i','o','u','A','E','I','O','U'));

intfirstHalfVowelsCount = (int)IntStream.range(0,s.length() /2).filter(i ->vowels.contains(s.charAt(i))).count();

intsecondHalfVowelsCount = (int)IntStream.range(s.length() /2,s.length()).filter(i ->vowels.contains(s.charAt(i))).count();

returnfirstHalfVowelsCount ==secondHalfVowelsCount;

}

}

}