C# /C++/ python 按文件名排序

目的：Coin0.bin Coin1.bin Coin2.bin Coin3.bin … Coin21.bin 按文件名排序

1.C#实现

class Program
{

public static int cmp(string name)
{
int length = name.IndexOf(".bin") - name.IndexOf("Coin") - 4;
string str_crap = name.Substring(name.IndexOf("Coin") + 4, length);
return Convert.ToInt32(str_crap);
}
static void Main(string[] args)
{
string Folder = "";\\文件地址
DirectoryInfo theFolder = new DirectoryInfo(Folder);
FileInfo[] fileInfo = theFolder.GetFiles("*.bin");//文件后缀
List<string> fileList = new List<string>();
foreach (var item in fileInfo)
{
//获取文件名
fileList.Add(item.FullName);
}
fileList = fileList.OrderBy(o => cmp(o)).ToList();
foreach (var i in fileList)
{
Console.WriteLine(i);
}
}
}

2.C++ 实现

#include <io.h>
#include <fstream>
#include <string>
#include <vector>
#include <iostream>
#include<algorithm>
#include<functional>

using namespace std;
int findIndex(string a, string b, string c)
{
   int index_f, index_l;
   int index_gap;
   index_f = a.find(b) + 4;
   index_l = a.find(c);
   index_gap = index_l - index_f;
   return atoi((a.substr(index_f, index_gap)).c_str());

}
int cmp(string a, string b)
{
   int c, d;
   c = findIndex(a, "Coin", ".bin");
   d = findIndex(b, "Coin", ".bin");
   return c < d;
}
void GetAllFormatFiles(string path, vector<string>& files, string format)//vector是一个能够存放任意类型的动态数组
{
   //文件句柄
   long hFile = 0;
   //文件信息
   struct _finddata_t fileinfo;//文件结构体
   string p;
   if ((hFile = _findfirst(p.assign(path).append("\\*" + format).c_str(), &fileinfo)) != -1)
   {
       do
       {
           if (strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0)
               files.push_back(p.assign(path).append("\\").append(fileinfo.name));   //压入
       } while (_findnext(hFile, &fileinfo) == 0);

       _findclose(hFile);
   }
}
   int main()
   {
       string filePath = "";//地址
       string format = ".bin";//文件后缀
       vector<string> files;//参数存放文件名称
       GetAllFormatFiles(filePath, files, format);
       sort(files.begin(), files.end(), cmp);//按文件名称从小到大排序
       int size = files.size();//向量大小
       for (int i = 0; i < size; i++)
       {
       cout << files[i] << endl;
       }
   }

3.python实现
from struct import *
import binascii
import os.path,time
import sys

def indexOut(str1):
pos_f = str1.index('Coin') + 4
pos_l = str1.index('.bin')
str2 = str1[pos_f:pos_l]
i = int(str2)
return i

def getFileList(path,endStr):

#'''获取指定目录下，指定后缀的文件列表'''
r_list = []
f_list = os.listdir(path) #获取目录列表
for i in f_list:
# 分离文件名和后缀名，过滤掉工具脚本
file_endStr = os.path.splitext(i)[1]#os.path.splitext('book.txt') ('book', '.txt')
# 判断是否是目录
if file_endStr == endStr:
r_list.append(path + '/' + i)

r_list.sort(key=lambda x:indexOut(x))
return r_list

list = getFileList("",".bin")//地址文件后缀
file = open(list[2], 'rb')
print(file)

C# /C++/ python 按文件名排序

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