Introduction - If you have any usage issues, please Google them yourself
Algorithm is graded 2-4 reverse introduction to question: set A [1.. n] is A contains n A different number of array. If in the I < j, there may be A [I] > A [j], says (I, j) is called A inversion of (one of the reverse. Give an algorithm, it can NLGN) Θ (the worst running time, determine any arrangement-- a elements in the number of the reverse. (hint: modify merger algorithm)