Tony Docherty wrote:That looks like your homework question.
I suggest you do a little searching on this site as this question has been asked several times here recently.
The quieter you are, the more you are able to hear.
Chaturaka Gunatilaka wrote:I got the answer but couldn't find the reason.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors