Algorithms, Theory, Spirituality, Life, Technology, Food and Workout : trying to sort these deterministically in $\Theta(1)$ time (constant time). I happened to look at the algorithmic details of UNIX Sort, a LINUX version of the classic UNIX sort is a part of GNU coreutils-6.9.90. This is classic example of the standard External R-Way merge , to sort a data of size N bytes with a main memory size