360的编程题，字符置换，怎么做？求大神帮忙

#include <iostream> using namespace std; void f(string &s) { int n = 0; for(auto i = s.begin(); i != s.end() - 1; ++i) { if(*i == '.' && *(i + 1) == '.') ++n; } cout << n << endl; } int main() { int n , m ; int x; char c; while(cin >> n >> m) { string s; for(int i = 0; i < n; ++i) { cin >> c; s.push_back(c); } for(int i = 0; i < m; ++i) { cin >> x >> c; s[x - 1] = c; cout << s << endl; f(s); } } return 0; } 有问题的话相互探讨。0-0

import java.util.*; public class Main{ //函数f(s) public static int f(char[] s) { int i=0; int count=0; while(i<s.length-1) { if(s[i]=='.'&&s[i]==s[i+1]) { count++; } i++; } return count; } //替换字符 public static void replaceChar() { Scanner sc=new Scanner(System.in); int len,count=0; int pos,result; char c; char[] s={}; while(sc.hasNext()) { //读取长度和替换组数 len=sc.nextInt(); count=sc.nextInt(); //System.out.println(len+count); s=sc.next().trim().toCharArray(); if(s.length>len) { System.out.println("out of range!"); break; } for(int j=0;j<count;j++) { pos=sc.nextInt(); c=sc.next().toString().trim().toCharArray()[0]; s[pos]=c; result=f(s); System.out.println(result); } continue; } sc.close(); } public static void main(String[] args) { replaceChar(); } } 水平有限，可以参考一下，欢迎指正！

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haha