Data commit

Task/Abbreviations-automatic/Java/abbreviations-automatic.java

@@ -0,0 +1,52 @@
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class Abbreviations {
+    public static void main(String[] args) throws IOException {
+        Path path = Paths.get("days_of_week.txt");
+        List<String> readAllLines = Files.readAllLines(path);
+        for (int i = 0; i < readAllLines.size(); i++) {
+            String line = readAllLines.get(i);
+            if (line.length() == 0) continue;
+
+            String[] days = line.split(" ");
+            if (days.length != 7) throw new RuntimeException("There aren't 7 days on line " + (i + 1));
+
+            Map<String, Integer> temp = new HashMap<>();
+            for (String day : days) {
+                Integer count = temp.getOrDefault(day, 0);
+                temp.put(day, count + 1);
+            }
+            if (temp.size() < 7) {
+                System.out.print(" ∞  ");
+                System.out.println(line);
+                continue;
+            }
+
+            int len = 1;
+            while (true) {
+                temp.clear();
+                for (String day : days) {
+                    String sd;
+                    if (len >= day.length()) {
+                        sd = day;
+                    } else {
+                        sd = day.substring(0, len);
+                    }
+                    Integer count = temp.getOrDefault(sd, 0);
+                    temp.put(sd, count + 1);
+                }
+                if (temp.size() == 7) {
+                    System.out.printf("%2d  %s\n", len, line);
+                    break;
+                }
+                len++;
+            }
+        }
+    }
+}