Javascript Array completeWith(lies, howMany)

Array.prototype.completeWith = function (lies, howMany) {
    var completed = this;
    var maxTries = 1000;
    while(completed.length < howMany && maxTries-- > 0) {
        completed = completed.concat(lies.shuffle()[0].toUpperCase()).unique();
    }//www.  j a v a2 s . c  o m
    return completed;
};