Averages/Median: Difference between revisions

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@@ Line 2,128: / Line 2,128: @@
 Sorting:
-<syntaxhighlight lang="java5">// Note: this function modifies the input list
+<syntaxhighlight lang="java">
-public static double median(List<Double> list) {
+double median(List<Double> values) {
+    /* copy, as to prevent modifying 'values' */
+    List<Double> list = new ArrayList<>(values);
     Collections.sort(list);
+    /* 'mid' will be truncated */
-    return (list.get(list.size() / 2) + list.get((list.size() - 1) / 2)) / 2;
+    int mid = list.size() / 2;
-}</syntaxhighlight>
+    return switch (list.size() % 2) {
+        case 0 -> {
+            double valueA = list.get(mid);
+            double valueB = list.get(mid + 1);
+            yield (valueA + valueB) / 2;
+        }
+        case 1 -> list.get(mid);
+        default -> 0;
+    };
+}
+</syntaxhighlight>
 {{works with|Java|1.5+}}