Upload files to "java/wordStat"

2026-04-13 10:42:12 +03:00
parent 8f41006963
commit 0d6b168b1e
5 changed files with 492 additions and 0 deletions
--- a/java/wordStat/WordStatTest.java
+++ b/java/wordStat/WordStatTest.java
@@ -0,0 +1,91 @@
+package wordStat;
+
+import base.Named;
+import base.Selector;
+import java.util.Comparator;
+import java.util.function.Function;
+import java.util.stream.Stream;
+
+/**
+ * Tests for <a href="https://www.kgeorgiy.info/courses/prog-intro/homeworks.html#wordstat">Word Statistics</a> homework
+ * of <a href="https://www.kgeorgiy.info/courses/prog-intro/">Introduction to Programming</a> course.
+ *
+ * @author Georgiy Korneev (kgeorgiy@kgeorgiy.info)
+ */
+public final class WordStatTest {
+
+    // === Base
+    private static final Named<Function<String, Stream<String>>> ID = Named.of(
+        "",
+        Stream::of
+    );
+    private static final WordStatTester.Variant BASE =
+        new WordStatTester.Variant("", false, Comparator.comparingInt(p -> 0));
+
+    // === 3637
+    public static final int SIZE = 3;
+    private static final WordStatTester.Variant LENGTH =
+        new WordStatTester.Variant(
+            "Length",
+            false,
+            Comparator.comparingInt(p -> p.first().length())
+        );
+    private static final Named<Function<String, Stream<String>>> MIDDLE = size(
+        "Middle",
+        SIZE * 2 + 1,
+        s -> Stream.of(s.substring(SIZE, s.length() - SIZE))
+    );
+
+    static Named<Function<String, Stream<String>>> size(
+        final String name,
+        final int length,
+        final Function<String, Stream<String>> f
+    ) {
+        return Named.of(name, s ->
+            s.length() >= length ? f.apply(s) : Stream.empty()
+        );
+    }
+
+    // === 3839
+    private static final Named<Function<String, Stream<String>>> AFFIX = size(
+        "Affix",
+        2,
+        s ->
+            Stream.of(
+                s.substring(0, s.length() / 2),
+                s.substring(s.length() - s.length() / 2)
+            )
+    );
+
+    // === 3536
+    private static final Named<Function<String, Stream<String>>> SUFFIX = size(
+        "Suffix",
+        2,
+        s -> Stream.of(s.substring(s.length() - s.length() / 2))
+    );
+
+    // === 4749
+    private static final Named<Function<String, Stream<String>>> PREFIX = size(
+        "Prefix",
+        2,
+        s -> Stream.of(s.substring(0, s.length() / 2))
+    );
+
+    // === Common
+    public static final Selector SELECTOR = new Selector(WordStatTester.class)
+        .variant("Base", BASE.with(ID))
+        .variant("3637", LENGTH.with(MIDDLE))
+        .variant("3839", LENGTH.with(AFFIX))
+        .variant("3435", LENGTH.with(SUFFIX))
+        .variant("3233", LENGTH.with(ID))
+        .variant("4142", LENGTH.with(MIDDLE))
+        .variant("4749", LENGTH.with(PREFIX));
+
+    private WordStatTest() {
+        // Utility class
+    }
+
+    public static void main(final String... args) {
+        SELECTOR.main(args);
+    }
+}