Related to Operating System

Question

I want programme and algorithms for FIDO, LRU, OPTIMAL PAGE REPLACEMENT ALGORITHM

Answer 1

http://campuscoke.blogspot.com/2015/01/fifo-page-replacement-algorithm-in-java.html

http://fifocode.blogspot.com

Or you can directly do some research by google
https://www.google.com/search?q=fifo+algorithm+operating+system&rlz=1C1GGRV_enCR751CR751&oq=fifo+algorithm+op&aqs=chrome.1.69i57j0l2.18251j0j4&sourceid=chrome&ie=UTF-8