ZIP , RAR , how do they work ¿

Hi :smiley:

how do the compression utilities work ?

i can guess , do they express “1000000” like this “10^6” , and “AAAAAAAAAAAAAA” in another shorter way ??

can we make file expander to make the file bigger for fun :smiley:

thanks

http://computer.howstuffworks.com/file-compression.htm

That pretty much explains how it works in detail