JSFiddle - React, Tailwind, and code Playground

JavaScript

var a, b, n = 0, i;
var alice_win = bob_win = 0;
a = Math.round(Math.random());
b = Math.round(Math.random());

for (i = 0; i < 100000; i++) {
	a = b;
	b = Math.round(Math.random());
	//0 орел
	//1 решка
  if (a == 0 && b == 1) 
  {
  	alice_win++;
    a = Math.round(Math.random());
		b = Math.round(Math.random());
  } else
  if (a == 1 && b == 1)	
  {
  	bob_win++;
    a = Math.round(Math.random());
		b = Math.round(Math.random());
  }
}
alert("Алиса победила: "+ alice_win + " раз" + "а Боб: " + bob_win + " раз");