1208. 翻硬币

import java.util.Scanner;public class Main {public static void turn(char[] a,int i) {if(a[i] == '*')	a[i] = 'o';else	a[i] = '*';}public static void main(String[] args) {Scanner sc = new Scanner(System.in);char[] a = sc.next().toCharArray();char[] b = sc.next().toCharArray();int c = a.length-1;int sum = 0;for(int i=0;i<c;i++) {if(a[i]!=b[i]) {sum++;turn(a,i);turn(a,i+1);}}System.out.println(sum);}
}