Create ListSortSurname.java

janbodnar · web-flow · commit 1776d12eeeff · 2021-03-21T18:01:36.000+01:00
diff --git a/comparesort/ListSortSurname.java b/comparesort/ListSortSurname.java
@@ -0,0 +1,26 @@
+package com.zetcode;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.function.BiFunction;
+import java.util.function.Function;
+
+// sorting a list of full names by surname
+
+public class ListSortSurname {
+
+    public static void main(String[] args) {
+
+        var names = Arrays.asList("John Doe", "Lucy Smith",
+                "Benjamin Young", "Robert Brown", "Thomas Moore",
+                "Linda Black", "Adam Smith", "Jane Smith");
+
+        Function<String, String> fun = (String fullName) -> fullName.split("\s")[1];
+        names.sort(Comparator.comparing(fun).reversed());
+
+        System.out.println(names);
+    }
+}
