统计字符串中每种字符类型的个数demo

/** 统计字符串中每中字符类型的个数，思路：* 1、键盘录入一个字符串* 2、获取到每个字符，遍历字符串* for (int i = 0; i < s.length(); i++) {char ch = s.charAt(i);* 3、判断每个字符属于哪种类型，对应的个数++*/package cn.string;import java.util.Scanner;public class TongJi {public static void main(String[] args) {int daxienumber = 0;int xiaoxienumber = 0;int intnumber = 0;Scanner sc = new Scanner(System.in);System.out.println("请属于一个字符串");String s = sc.nextLine();for (int i = 0; i < s.length(); i++) {char ch = s.charAt(i);System.out.println(ch);if (ch >= 'A' && ch <='Z') {daxienumber ++ ;}if (ch >= 'a' && ch <='z') {xiaoxienumber ++;}if (ch >= '0' && ch <='9') {intnumber ++;}}System.out.println("daxienumber:"+daxienumber);System.out.println("xiaoxienumber:"+xiaoxienumber);System.out.println("intnumber:"+intnumber);}}