Prove of Monty Hall Problem

The code uses 100 random trails of selecting among three doors to win a car. each with randomly selected door that containing the care in variable called 'prize', and randomly candidate door in a variable 'candidate' . The host decided to open a door with a goat, this shown in variable called 'host' and then there is a variable containing the case of switch to the other door ' selecting.
The experiment shows that the switching result in much higher probability of winning the car from one third to two third ! Try it .