I am making a Pi based RNG(Random Number Generator) for a research project. I am getting stumped at this point hence I cant seem to figure out how to read the digits form a rather large file (1GB). Here is the input:
....159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160943305727036575959195309218611738193261179310511854807446237996274956735188575272489122793818301194912983367336244065664308602139494639522473719070217986094370277053921717629317675238467481846766940513200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892354201995611212902196086403441815981362977477130996051870721134999999837297804995105973173281609631859502445945534690830264252230825334468503526193118817101000313783875288658753320838142061717766914730359825349042875546873115956286388235378759375195778185778053217122680661300192787661119590921642019893809525720106548586327886593615338182....
File is ugly I know... its Pi to 1 Billionth decimal place. I am not going into details on why I am doing this but here is my goal. I want to be able to skip x number of decimal places before beginning printing output, I also need to be able to read out y number of consecutive digits at a time so like if it was 4 at a time output would look like:
1111\n 2222\n 3333\n 4444\n....
My base objective is to be able to print at least 1 number at a time hence after that I can piece them together how I want... So basic output is:
For input 3.1415.. I get.. 3,1,4,1,5....
I tried bunch of File Streams from Java API but it only prints bytes/bits... I have no idea on how to convert them to something meaningful.
Also, Reading line by line is not optimal hence I have to have my numbers be same length and I feel like reading line by line would cut them off in a funny way..
Okay I have spoken to a CS professor and it seems that I have forgotten my basic Java training. 1Byte = 1 char. In this case BufferedInputReader spits out ASCII values for said chars. Here is simple solution:
FileInputStream ifs = new FileInputStream(pi); //Input File containing 1 billion digits
BufferedInputStream bis = new BufferedInputStream(ifs);
System.out.println((char)bis.read()); //Build strings or parse chars how you want
..Rinse and repeat. Sorry for wasting time... but I hope this will set someone one the right track down the road.