题解 | #字符串替换#

import java.util.*;

public class StringFormat {
    public String formatString(String A, int n, char[] arg, int m) {
      StringBuffer sb = new StringBuffer();
        char[] chars = A.toCharArray();
        for (int i = 0; i < chars.length; ) {
            if (A.charAt(i) == '%' && A.charAt(i+1) == 's') {
                sb.append(arg[arg.length-m--]);
                i = i+"%s".length();
            }else{
                sb.append(chars[i]);
                i++;
            }
        }
        while (m>0){
            sb.append(arg[arg.length-m--]);
        }
        return sb.toString();
    }
}