从ftp服务器进行批量下载，处理文件名保存时重名的问题，更改重名文件名方式为给后面加1、2、3等数字，保持后缀不变

公司最近有一个从ftp批量下载文件的需求，但是文件名重复总会报错

没办法，自己下班后写了一个小算法

仿照桶排序的原理，实现了这个小功能，直接上代码：

String[] test = {"hahaha.txt","wekje.doc","学习.pdf","wekje.doc","学习.pdf",
                "hahaha.txt","学习.pdf","wekje.doc","ewheuhiq.jpg","学习.pdf","Du2Cm_I0Z1x081534·386137_10s.mp4","Du2Cm_I0Z1x081534·386137_10s.mp4"};

        String[] strlist = new String[1];
        int [] times = new int[1];
        times[0] = 1;
        System.out.println("整理前的文件名数组"+Arrays.toString(test));
        for(int i=0;i<test.length;i++){
            int target = 0;
            if(i==0){
                strlist[i] = test[i];
            }else{
                boolean flag = false;
                for(int j=0;j<times.length;j++){
                    if(test[i].equals(strlist[j])){
                        flag = true;
                        target = j;
                        break;
                    }else{
                        continue;
                    }
                }
                if(flag){
                    String[] spi = test[i].split("\.");
                    StringBuilder sb = new StringBuilder(spi[0]);
                    sb.append("(").append(times[target]+"").append(")")
                    .append(".").append(spi[1]);
                    test[i] = sb.toString();
                    times[target] += 1;
                }else{
                    strlist = Arrays.copyOf(strlist, strlist.length+1);
                    times = Arrays.copyOf(times, times.length+1);
                    strlist[strlist.length-1] = test[i];
                    times[times.length-1] = 1;
                }
            }
        }

        System.out.println("处理后的文件名数组"+Arrays.toString(test));