package com.day5.test;
public class Test2 {
/**
* @param args
* 需求：统计字符串中大写字母字符，小写字母字符，数字字符出现的次数，其他字符出现的次数
* ABCDEabcd123456!@#$%^
注意if..else if...else与if...if...if...else的区别
*/
public static void main(String[] args) {
String s="ABCDEabcd123456!@#$%^&";
int big=0;
int small=0;
int num=0;
int other=0;
/*for(int i=0;i<s.length();i++)
{
char c=s.charAt(i);
if(c>=‘A‘&&c<=‘Z‘)
big++;
if(c>=‘a‘&&c<=‘z‘)
small++;
if(c>=‘0‘&&c<=‘9‘)//注意不能写成if(c>=0&&c<=9)
num++;
else
other++;
}
System.out.println(big);//5
System.out.println(small);//4
System.out.println(num);//6
System.out.println(other);//16
*/
for(int i=0;i<s.length();i++)
{
char c=s.charAt(i);
if(c>=‘A‘&&c<=‘Z‘)
big++;
else if(c>=‘a‘&&c<=‘z‘)
small++;
else if(c>=‘0‘&&c<=‘9‘)//注意不能写成if(c>=0&&c<=9)
num++;
else
other++;
}
System.out.println(big);//5
System.out.println(small);//4
System.out.println(num);//6
System.out.println(other);//7
}
}