Data commit

Task/Abbreviations-automatic/D/abbreviations-automatic.d

@@ -0,0 +1,36 @@
+import std.conv;
+import std.exception;
+import std.range;
+import std.stdio;
+import std.string;
+
+void main() {
+    foreach (size_t i, dstring line; File("days_of_week.txt").lines) {
+        line = chomp(line);
+        if (!line.empty) {
+            auto days = line.split;
+            enforce(days.length==7, text("There aren't 7 days in line ", i+1));
+
+            int[dstring] temp;
+            foreach(day; days) {
+                temp[day]++;
+            }
+            if (days.length < 7) {
+                writeln(" ∞  ", line);
+                continue;
+            }
+            int len = 1;
+            while (true) {
+                temp.clear();
+                foreach (day; days) {
+                    temp[day.take(len).array]++;
+                }
+                if (temp.length == 7) {
+                    writefln("%2d  %s", len, line);
+                    break;
+                }
+                len++;
+            }
+        }
+    }
+}