如果文件夹已存在，请在文件夹名称中添加下一个数字

const fs = require('fs');

function createFolder(folderPath) {
  let count = 1;
  let folderName = folderPath;
  while (fs.existsSync(folderName)) {
    folderName = folderPath + '_' + count;
    count++;
  }
  
  fs.mkdirSync(folderName);
  console.log('文件夹已创建：' + folderName);
}

createFolder('path/to/folder');

import os

def create_folder(folder_path):
    count = 1
    folder_name = folder_path
    while os.path.exists(folder_name):
        folder_name = folder_path + '_' + str(count)
        count += 1
        
    os.mkdir(folder_name)
    print('文件夹已创建：' + folder_name)

create_folder('path/to/folder')

import java.io.File;

public class CreateFolder {
    public static void createFolder(String folderPath) {
        int count = 1;
        String folderName = folderPath;
        File folder = new File(folderName);
        while (folder.exists()) {
            folderName = folderPath + "_" + count;
            folder = new File(folderName);
            count++;
        }
        
        folder.mkdir();
        System.out.println("文件夹已创建：" + folderName);
    }
    
    public static void main(String[] args) {
        createFolder("path/to/folder");
    }
}