module random
{
 var randint(var start,var end){
 return math.random(start,end);
 }
 var randrange(var start,var end){
 return math.random(start,end-1);
 }
 var choice(var v){
 if(isstring(v)){
 var p = randrange(0,len(v));
 return string.at(v,p);
 }
 else if(isvector(v)){
 var p = randrange(0,len(v));
 return v[p];
 }
 }
 var simple(var v,var count = 1){
 if(!isstring(v) && !isvector(v)) return null;


 var hased = [];
 var ret = [];
 while(hased.size() < len(v) && hased.size() < count){
 if(isstring(v)){
 var p = randrange(0,len(v));
 if(hased.has(p)) continue;
 hased.push_back(p);
 ret.push_back(string.at(v,p));
 }
 else if(isvector(v)){
 var p = randrange(0,len(v));
 if(hased.has(p)) continue;
 hased.push_back(p);
 ret.push_back(v[p]);
 }
 }
 return ret;
 }
}