java: add «2418. Sort the People»

Signed-off-by: Matej Focko <me@mfocko.xyz>

java/sort-the-people.java

@@ -0,0 +1,16 @@
+import java.util.Comparator;
+
+class Solution {
+  private record Person(String name, int height) {}
+
+  public String[] sortPeople(String[] names, int[] heights) {
+    var people = new Person[names.length];
+    for (int i = 0; i < names.length; ++i) {
+      people[i] = new Person(names[i], heights[i]);
+    }
+
+    Arrays.sort(people, Comparator.comparing(p -> ((Person) p).height).reversed());
+
+    return Arrays.stream(people).map(p -> p.name).toArray(String[]::new);
+  }
+}