Data commit

Task/Inverted-index/D/inverted-index.d

@@ -0,0 +1,33 @@
+import std.stdio, std.algorithm, std.string, std.file, std.regex;
+
+void main() {
+    string[][string] index;
+
+    void parseFile(in string fn) {
+        if (!exists(fn) || !isFile(fn))
+            throw new Exception("File not found");
+
+        foreach (word; readText(fn).splitter(regex(r"\W"))) {
+            word = word.toLower();
+            if (!index.get(word, null).canFind(fn))
+                index[word] ~= fn;
+        }
+    }
+
+    immutable fileNames = ["inv1.txt", "inv2.txt", "inv3.txt"];
+    foreach (fName; fileNames)
+        parseFile(fName);
+
+    while (true) {
+        writef("\nEnter a word to search for: (q to quit): ");
+        immutable w = readln().strip().toLower();
+        if (w == "q") {
+            writeln("quitting.");
+            break;
+        }
+        if (w in index)
+            writefln("'%s' found in%( %).", w, index[w]);
+        else
+            writefln("'%s' not found.", w);
+    }
+}