changedwins = 0;
NOTchangedwins = 0;

function rando(max) {
    min = 1;
    var byteArray = new Uint8Array(1);
    window.crypto.getRandomValues(byteArray);
    var range = max - min + 1;
    var max_range = 256;
    if (byteArray[0] >= Math.floor(max_range / range) * range)
        return rando(min, max);
    return min + (byteArray[0] % range);
}


function test(a){
aa = a;

for(i = a; i > 0; i--){

windoor = rando(3);
mychoise = rando(3);

openeddoor = rando(3);
while(openeddoor == windoor || mychoise == openeddoor){
    openeddoor = rando(3);
}

//---------------------------------------


if(i < aa/2){
    //changed

    predchoise = mychoise;

    mychoise = rando(3);
    while(mychoise == openeddoor || predchoise == mychoise){
        mychoise = rando(3);
    }

    if(mychoise == windoor){
        changedwins++;
    }



}else{

//notchanged
    if(mychoise == windoor){
        NOTchangedwins++;
    }
}

}

console.log("changed: " + (changedwins/aa*100) + "%");
console.log("nchanched: " + (NOTchangedwins/aa*100) + "%");
}

test(100000);