题解 | #计算某字符出现次数#

import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String s = sc.nextLine().toLowerCase(); String c = sc.nextLine().toLowerCase(); char[] charArray = c.toCharArray(); char c1 = charArray[0]; int num = 0; for(int i = 0;i < s.length();i++) { int is_equal = s.charAt(i)-c1; if(is_equal==0) num++; } System.out.println(num);

	sc.close();
}

}