import java.util.Scanner; /** * HJ2 计算某字符出现次数 */ public class HJ002 { public static void main(String[] args){ Scanner s = new Scanner(System.in); String str1= s.nextLine(); String str2 = s.nextLine(); String split = str1.toUpperCase().replaceAll(str2.toUpperCase(),""); System.out.println(str1.length...