question

question.js

function strUnhash(h)
{
	str = "";
	letters = "acdfgilmnoprstuw";
	while(h>23) {
		c = h % 23;
		h = (h-(h%23))/23; // or a simpler Math.floor(h / 23) as h is always positive;
		str = letters[c] + str;
	}
	return str;
}

function strHash(s)
{
	hash = 7;
	letters = "acdfgilmnoprstuw";
	for(i = 0; i < s.length; i++)
	{
		hash = (hash * 23 + letters.indexOf(s[i]));
	}
	return hash;
}

console.log(strHash("tortilla"));
console.log(strUnhash(593846452632));
console.assert("tortilla" == strUnhash(strHash("tortilla")));

console.log(strUnhash(292681030017238));