e0702.java

java小程序

//import java.io.*;
public class E0702
{
public static void main(String args[])
{
int BNumber=0;
int SNumber=0;
char a[]=args[0].toCharArray();
String BNum="";
String SNum="";
for(int i=0;i<a.length;i++)
{
if(a[i]>=65&&a[i]<=90)
 {BNumber++;BNum+=a[i]+" ";}
if(a[i]>=97&&a[i]<=122)
 {SNumber++;SNum+=a[i]+" ";}
}
System.out.println("大写字母有"+BNumber+"个，它们是："+BNum);
System.out.println("小写字母有"+SNumber+"个，它们是："+SNum);
System.out.println("将大小写相互转换之后为");
for(int i=0;i<a.length;i++)
{
if(a[i]>=65&&a[i]<=90)
 {a[i]+=32;}
else
 {a[i]-=32;}
}
for(int i=0;i<a.length;i++)
System.out.print(a[i]+" ");
}
}