Fast reading of little endian integers from file

Question

I need to read a binary file consisting of 4 byte integers (little endian) into a 2D array for my Android application. My current solution is the following:

Answer 1

First of all, your 'inp.read(buffer)' is unsafe, as read contract does not guarantee that it will read all 4 bytes.

That aside, for quick transformation use the algorithm from DataInputStream.readInt

I've adapted for you case of byte array of 4 bytes:

int little2big(byte[ ] b) {
    return (b[3]&0xff)<<24)+((b[2]&0xff)<<16)+((b[1]&0xff)<<8)+(b[0]&0xff);
}