[Solved] Java Code Explain [closed]

Question

24 << 8 means shifting the number 24 to the left for 8 bits, which is equivalent to 24 * (2^8) = 6144.

In the provided code snippet, it encodes a time hh:mm into an integer hh << 8 + mm.
Since there are 24 hours in one day, the array to represent the activity of every minute in one day requires (24 << 8) + 1 elements. The +1 is to make the array index for 24:00 legal.

Accepted Answer

24 << 8 means shifting the number 24 to the left for 8 bits, which is equivalent to 24 * (2^8) = 6144.

In the provided code snippet, it encodes a time hh:mm into an integer hh << 8 + mm.
Since there are 24 hours in one day, the array to represent the activity of every minute in one day requires (24 << 8) + 1 elements. The +1 is to make the array index for 24:00 legal.