//Let a and b be the results of 2 tosses of the unfair coin. (Where true is heads, false is tails).
//Now a is true with a probability of p, a is false with a probability of(1-p) (and the same with b).
// | b = true | b = false
//a = true | p* p | p*(1-p)
//a = false | p*(1-p) | (1-p)(1-p)
//Two of these probabilities are equal/fair, a && !b, and !a && b
static bool BetterFlip(UnfairCoin coin)
{
bool a = coin.Flip();
bool b = coin.Flip();
if (a && !b)
{
return(true);
}
if (!a && b)
{
return(false);
}
//retry, one of the other 2 unfair possibilities
return(BetterFlip(coin));
}
//http://www.techinterview.org/post/3233458616/getting-a-fair-result-with-an-unfair-coin/
public static void FairResultUnfairCoin()
{
UnfairCoin coin = new UnfairCoin(0.6);
}
