Microsoft C# | 陣列相關的協助方法

前言

陣列（Array）

排列（Array.Sort(name);）

string[] pallets = { "B14", "A11", "B12", "A13" };

Console.WriteLine("Sorted...");
Array.Sort(pallets);
foreach (var pallet in pallets)
{
    Console.WriteLine($"-- {pallet}");
}

Sorted...
-- A11
-- A13
-- B12
-- B14

反轉（Array.Reverse()）

string[] pallets = { "B14", "A11", "B12", "A13" };

Console.WriteLine("Sorted...");
Array.Sort(pallets);
foreach (var pallet in pallets)
{
    Console.WriteLine($"-- {pallet}");
}

Console.WriteLine("");
Console.WriteLine("Reversed...");
Array.Reverse(pallets);
foreach (var pallet in pallets)
{
    Console.WriteLine($"-- {pallet}");
}

Sorted...
-- A11
-- A13
-- B12
-- B14

Reversed...
-- B14
-- B12
-- A13
-- A11

清除（Array.Clear()）

string[] pallets = { "B14", "A11", "B12", "A13" };
Console.WriteLine("");

Array.Clear(pallets, 0, 2);
Console.WriteLine($"Clearing 2 ... count: {pallets.Length}");
foreach (var pallet in pallets)
{
    Console.WriteLine($"-- {pallet}");
}

Clearing 2 ... count: 4
-- 
-- 
-- B12
-- A13

空字串與Null的比較

呼叫清除的元素

if (pallets[0] != null)
    Console.WriteLine($"After: {pallets[0].ToLower()}");

擴增（Array.Resize(ref pallets,6);）

string[] pallets = { "B14", "A11", "B12", "A13" };
Console.WriteLine("");

Array.Clear(pallets, 0, 2);
Console.WriteLine($"Clearing 2 ... count: {pallets.Length}");
foreach (var pallet in pallets)
{
    Console.WriteLine($"-- {pallet}");
}

Console.WriteLine("");
Array.Resize(ref pallets, 6);
Console.WriteLine($"Resizing 6 ... count: {pallets.Length}");

pallets[4] = "C01";
pallets[5] = "C02";

foreach (var pallet in pallets)
{
    Console.WriteLine($"-- {pallet}");
}

字串資料類型的Array方法

ToCharArray()

string value = "abc123";
char[] valueArray = value.ToCharArray();

字元陣列合併成新字串

string value = "abc123";
char[] valueArray = value.ToCharArray();
Array.Reverse(valueArray);
string result = new string(valueArray);
Console.WriteLine(result);

Join（String.Join()）

string value = "abc123";
char[] valueArray = value.ToCharArray();
Array.Reverse(valueArray);
// string result = new string(valueArray);
string result = String.Join(",", valueArray);
Console.WriteLine(result);

Split()

string value = "abc123";
char[] valueArray = value.ToCharArray();
Array.Reverse(valueArray);
// string result = new string(valueArray);
string result = String.Join(",", valueArray);
Console.WriteLine(result);

string[] items = result.Split(',');
foreach (string item in items)
{
    Console.WriteLine(item);
}

3,2,1,c,b,a
3
2
1
c
b
a

後記

參考資料

使用 C# 中的協助程式方法在陣列上執行作業