Another update from ingydotnet^djgoku

Task/Letter-frequency/JavaScript/letter-frequency-1.js

@@ -0,0 +1,29 @@
+(function(txt) {
+
+    var cs = txt.split(''),
+        i = cs.length,
+        dct =  {},
+        c = '',
+        keys;
+
+    while (i--) {
+        c = cs[i];
+        dct[c] = (dct[c] || 0) + 1;
+    }
+
+    keys = Object.keys(dct);
+    keys.sort();
+    return keys.map(function (c) { return [c, dct[c]]; });
+
+})("Not all that Mrs. Bennet, however, with the assistance of her five\
+daughters, could ask on the subject, was sufficient to draw from her\
+husband any satisfactory description of Mr. Bingley. They attacked him\
+in various ways--with barefaced questions, ingenious suppositions, and\
+distant surmises; but he eluded the skill of them all, and they were at\
+last obliged to accept the second-hand intelligence of their neighbour,\
+Lady Lucas. Her report was highly favourable. Sir William had been\
+delighted with him. He was quite young, wonderfully handsome, extremely\
+agreeable, and, to crown the whole, he meant to be at the next assembly\
+with a large party. Nothing could be more delightful! To be fond of\
+dancing was a certain step towards falling in love; and very lively\
+hopes of Mr. Bingley's heart were entertained.");