anagram: naive version; almost works, lowercase conversion is needed(?)

cpp/anagram/anagram.cpp

@@ -0,0 +1,59 @@
+#include "anagram.h"
+
+#include <algorithm>
+#include <locale>
+#include <iostream>
+
+
+namespace anagram {
+
+
+using namespace std;
+
+
+static inline string normalize(const string &str)
+{
+    string result = str;
+
+    transform(result.begin(), result.end(),
+            result.begin(),
+            [](char c){return tolower(c);});
+
+    sort(result.begin(), result.end());
+
+    cout << str << " -> " << result << endl;
+
+    return result;
+}
+
+anagram::anagram(const string &_key)
+{
+    cout << "New test, key=" << _key << endl;
+    key = normalize(_key);
+}
+
+StringContainer
+anagram::matches(const StringContainer &input) const
+{
+    StringContainer result(input.size());
+
+    cout << "Input: {";
+    for (auto s : input)
+        cout << s << " ";
+    cout << "}" << endl;
+
+    auto iter = copy_if(input.cbegin(), input.cend(),
+            result.begin(),
+            [=](const string &s){return key == normalize(s);});
+
+    cout << "Output: {";
+    for (auto s : result)
+        cout << s << " ";
+    cout << "}" << endl;
+
+    result.resize(distance(result.begin(), iter));
+
+    return result;
+}
+
+}