regexp.js

// The outrageous totally awesomely unoptimized and hard way of doing
// the stuff :D
(function() {
     var c, list
       , letters = {}
       , str = "ah, yes, for all the letters, you'll need"
             + "a loop... i read it wrong."
       ;

     str.replace(/\s|\S/g, function(match) {
	 if (match && match[0]) {
	     c = match[0];
	     letters[c] = (letters[c] || 0) + 1 }
     });

     // prints everything...
     list = Array.prototype.map.call(Object.keys(letters), function(key) {
                return [letters[key],
	                key + ": " + letters[key]];
	        });
     list.sort();
     return list.map(function(i){ return i[1] });
}());