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递归算法（归并排序）：求排列的逆序数

java实现： import java.util.ArrayList; import java.util.Collections; import java.util.Scanner; public class 粉刷栅栏 { private static int sum = 0; public static void main(String[] args) { @SuppressWar

java实现： public class 最大子数组问题 { public static void main(String[] args) { // TODO Auto-generated method stub int A[] = {13,-3,-25,20,-3,-16,-23,18,20,-7,12,-5,-22,15,-4,7}; int[] r = Find_max_s