题解 1858: 逆序数

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逆序数-题解(Java代码)写个java

```javaimportjava.util.Scanner;publicclassday2311{publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);intn=sc.nextInt();intx[]=newint[n]

逆序数-题解(Java代码)

importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);intn,num=0;n=sc.nextInt();inta[]=newint[n];f

1858————逆序数

importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);intn=scanner.nextInt();int[]arr=newint[