Julie is writing a computer game that simulates a 100 m race. Each time the space bar is pressed, the position of the player moves up by 1. When the position reaches 100, the player has won.
Here is Julie's algorithm for the program

CONST PlayerKey = ""
Position = 0
REPEAT
INPUT KeyPressed
If KeyPressed = PlayerKey THEN
Position = Position + 1
END IF
UNTIL Position = 100

State what is meant by selection and iteration using examples from Julie's algorithm.