PREV-6 翻硬币

题目

import java.util.Scanner;public class Main{    public static void main(String[] args) {        Scanner read = new Scanner(System.in);        String str1 = read.nextLine();        String str2 = read.nextLine();        System.out.println(reverseCoin(str1 , str2));    }    public static int reverseCoin(String str1 , String str2){        char[] arr1 = str1.toCharArray();        char[] arr2 = str2.toCharArray();        int count = 0;        for (int i = 0; i < arr1.length-1; i++) {            for (int j = i; j < i+1; j++) {                if(arr1[i] != arr2[j]){                    count++;                    if(arr2[j+1] == '*'){                        arr2[j+1] = 'o';                    }else{                        arr2[j+1] = '*';                    }                }            }        }        return count;    }}