Question

我有一个.sql文件目录字符串数组，我需要按升序排序。实际上我想基于数字部分对它进行排序，如果没有数字部分那么文件应该在顶部。我怎么能这样做？

3.5.1_Patch

3.5_CoreScript

3.6_Patch

3.6.1_Patch

Answer 1

你应该尽可能具体地提出问题。您可以使用Array.Sort和lambda函数执行所需操作：

string [] files = new string[] {"3.6.1_Patch","3.5_CoreScript","3.5.1_Patch","3.6_Patch"};
Array.Sort(files, (x,y) => {
    string [] x1 = x.Split('_');
    string [] y1 = y.Split('_');
    return String.Compare(x1[0], y1[0]);
});

我把它留给你来处理没有版本号的边缘情况。

修改

您的文件名比最初提供的文件更复杂。我假设第一个非数字字符串的所有内容都是版本？

此时我会创建一个类来解析文件名并存储版本号。它还实现了用于排序的IComparable接口。

public class Version : IComparable<Version> { // Just guessing here - without knowing the actual format public int Major = 0; public int Minor = 0; public int Build = 0; public string FileName; public Version(string fileName) { ParseFileName(fileName); } // Split the string on '_' or '.', // Considers the first 3 numbers to be version // (stops parsing at non-numeric value) public void ParseFileName(string fileName) { FileName = fileName; string [] data = Regex.Split(fileName, @"[_\.]"); int x; if (Int32.TryParse(data[0], out x)) { Major = x; if (2 <= data.Length && Int32.TryParse(data[1], out x)) { Minor = x; if (3 <= data.Length && Int32.TryParse(data[2], out x)) { Build = x; } } } } public override string ToString() { return FileName; } // Comparison public int CompareTo(Version v) { int c = Major.CompareTo(v.Major); if (0 == c) { c = Minor.CompareTo(v.Minor); } if (0 == c) { c = Build.CompareTo(v.Build); } return c; } }

测试程序：

string [] files = new string[] {"10.6.1_Patch","3.5_CoreScript","3.5.1_Patch","3.6_Patch","10.6_Patch", "test", "01_1_ALTER_TC_EDB_V3", "01_2_ALTER_TC_EDB_V3"}; Version [] versions = new Version[files.Length]; for (int i = 0; i < files.Length; i++) { versions[i] = new Version(files[i]); } Array.Sort(versions); foreach (var v in versions) { Console.WriteLine(v.ToString()); }

输出：

test 01_1_ALTER_TC_EDB_V3 01_2_ALTER_TC_EDB_V3 3.5_CoreScript 3.5.1_Patch 3.6_Patch 10.6_Patch 10.6.1_Patch

Answer 2

试试这个：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication34
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> input = new List<string>() { "3.5.1_Patch", "3.5_CoreScript", "3.6_Patch", "3.6.1_Patch" };


            input.Sort((x,y) => new CustomSort() { s = x}.CompareTo(y));
        }
    }

    public class CustomSort : IComparable
    {
        public string s { get; set; }
        public int CompareTo(object input)
        {
            string[] thissplitArray = (s).Split(new char[] { '_' }).ToArray();
            string[] splitArray = ((string)input).Split(new char[] { '_' }).ToArray();

            if (thissplitArray[0] == splitArray[0])
            {
                return thissplitArray[1].CompareTo(splitArray[1]);
            }
            else
            {
                return thissplitArray[0].CompareTo(splitArray[0]);
            }

        }
    }


}

如何按升序对字母数字文件名数组进行排序？

2 个答案: