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C# append multiple string array to a new array inside for loop [closed]

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How can I append all the string arr into one arr within a for loop?
string[] finalArray = new string[5];
for (int i = 0; i < finalArray.Length; i++)
{
string[] array1 = GenRandArray1();
string[] array2 = GenRandArray2();
string[] array3 = GenRandArray3();
string[] array4 = GenRandArray4();
// I want to combine all the string array to my finalArray.
finalArray[i] = array1 + array2 + array3 + array4
}
Since I make loop 5 times and store in finalArray[i], so the sample output will be something like this.
"12345","17896","685","984","063","991","6","9","3","6","68","20","69","52"
"43256","24356","765","345","347","983","2","1","0","5","90","34","12","76"
"76324","98754","542","625","267","865","3","2","1","8","23","43","76","86"
"00982","16864","537","847","249","136","1","0","9","3","65","80","23","17"
"12569","98754","658","345","646","999","5","9","6","3","94","63","15","47"

Do you mean concat all the arrays or a different algorithm? If you just want to concat all the arrays it just like below.
string[] finalArray = new string[5];
string[] array1 = new[] { "1", "2", "4" };
string[] array2 = new[] { "9", "3", "6" };
string[] array3 = new[] { "4", "0", "0" };
string[] array4 = new[] { "7", "8", "2" };
finalArray = finalArray.Concat(array1).Concat(array2).Concat(array3).Concat(array4).ToArray();

From your question it is not clear if you really want to concat your arrays five times, but let's assume that that is the case in your simplified code. In addition, as you remarked, you will be returning a list of arrays
Then:
List<string[]> finalArrayList = new List<string[]>();
for(int i=0; i<5; i++)
{
string[] array1 = new[] { "1", "2", "4" };
string[] array2 = new[] { "9", "3", "6" };
string[] array3 = new[] { "4", "0", "0" };
string[] array4 = new[] { "7", "8", "2" };
List<string> ConcatList = new List<string>(array1);
ConcatList.AddRange(array2);
ConcatList.AddRange(array3);
ConcatList.AddRange(array4);
finalArrayList.Add(ConcatList.ToArray());
}

How to sort a jagged array [closed]

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I'm making a program to automate rolling initiative. I have most of it done, but I can't sort the outputs because it's a jagged array. I need the second column of each array in my jagged array to be sorted from highest to lowest.
using System;
using System.Linq;
namespace Auto_Initiative
{
class Program
{
static void Main(string[] args)
{
string[] encounter =
{
"Wizard", "18", "-2",
"Bard", "9", "3",
"Goblin 1", "16", "1",
"Goblin 2", "14", "1"
};
int[][] numbers = new int[encounter.Length / 3][];
int loop = 0;
for(int i = 0; i > encounter.Length; i += 3)
{
// Name number, real roll
numbers[loop] = new int[2] {i, Int32.Parse(encounter[i + 1]) + Int32.Parse(encounter[i + 2])};
}
Console.ReadKey();
}
}
}

One part of designing your software is choosing the right data structure for how you are planning to use it. Sometimes redundant data is required but we don't know what you are requirements are to make that decision. So as was mentioned by Sergey you should consider creating a custom class which I have shown an example of below. Also note that a string[] is not really a jagged array. By definition a jagged array has nested arrays of variable size. The data structure depicted above could be put in a regular string[][] and would not be jagged.
Object Oriented in Action
What you are looking for is stored in unitsSortedBySecondColumn.
class so65865986
{
static void Main(string[] args)
{
Encounter encounter = new Encounter
{
Units = new List<EncounterUnit> {
new EncounterUnit{
Name = "Wizard",
Column1 = 18,
Column2 = -2,
},
new EncounterUnit{
Name = "Bard",
Column1 = 9,
Column2 = 3,
},
new EncounterUnit{
Name = "Goblin 1",
Column1 = 16,
Column2 = 1,
},
new EncounterUnit{
Name = "Goblin 2",
Column1 = 14,
Column2 = 1,
},
},
};
var unitsSortedBySecondColumn = encounter.Units
.OrderBy(u => u.Column1)
.Select(u => new int[] { u.Column1, u.Column2 })
.ToArray();
}
}
class EncounterUnit
{
public string Name;
public int Column1; //Change name to whatever it means
public int Column2; //Change name to whatever it means
}
class Encounter
{
public List<EncounterUnit> Units;
}
Nested (but not Jagged) Array
class so65865986_nested_array
{
static void Main(string[] args)
{
string[][] encounter =
{
new string[] {"Wizard", "18", "-2" },
new string[] {"Bard", "9", "3" },
new string[] {"Goblin 1", "16", "1" },
new string[] {"Goblin 2", "14", "1" },
};
int[][] numbers = encounter
.Select(u => new int[] { int.Parse(u[1]), int.Parse(u[2]) })
.OrderBy(u => u[0])
.ToArray();
Console.ReadKey();
}
}
Other Notes
Also, another note. You don't need to use Int32 because it is recommended you use the aliases provided which in this case is int.

use this code:
string[] encounter =
{
"Wizard", "18", "-2",
"Bard", "9", "3",
"Goblin 1", "16", "1",
"Goblin 2", "14", "1"
};
int[,] numbers = new int[encounter.Length / 3, 3];
for (int i = 1; i < encounter.Length / 4; i++)
{
for (int j = 0; j < encounter.Length / 3; j += 1)
{
numbers[j, i] = Convert.ToInt32(encounter[i + (j * 3)]);
Console.Write(numbers[j, i] + " ");
}
Console.WriteLine(Environment.NewLine);
}
Console.ReadLine();

Discord.net send DMs to a specific user?

So i've been searching for all day for a method that sends to a specific user a private message. I'm making a ticket system and I need to print all tickets in DM to the person that executed the command.
[Command("createtickets")]
[Description("Creates tickets")]
public async Task createtickets(CommandContext ctx)
{
var interactivity = ctx.Client.GetInteractivity();
string filepath = #"C:\Users\Administrator\Desktop\test.txt";
List<string> lines = new List<string>();
lines = File.ReadAllLines(filepath).ToList();
foreach (string line in lines)
{
Console.WriteLine(line);
}
string[] chars = new string[] { "a", "b", "c", "d", "e", "f", "g", "h", "k", "z", "n", "u", "r", "1", "2", "3", "4", "5", "6", "7", "8", "9" };
Random rnd = new Random();
for (int i=0; i< 9; i++)
{
string randomString = "";
for (int j = 0; j<12; j++)
{
randomString = randomString + chars[rnd.Next(0, 21)];
}
lines.Add(randomString);
}
File.WriteAllLines(filepath,lines);
await ctx.Channel.SendMessageAsync("10 Tickets were written");
var user = ctx.User;
As you can see there is a list with all the tickets and that is the thing i need to send via DM. I've tried searching on youtube, Discord.net Docs, DSharpplus Docs, every forum on the internet but they all list functions that were probably removed on the recent versions. Can anyone help me with this? I just need a way to DM the user

Generating Random Unique items from a string list [duplicate]

This question already has answers here:
Randomize a List<T>
(28 answers)
Closed 3 years ago.
I have string list of a deck of card the strings are as such, A-DIAMONDS, 2-CLUBS, etc.
I want to be able to generate 5 unique items from this list randomly.
I know how to do this in python with Random.sample(5) but in trying to find a solution in C#. everything seems to be generating a random, put it in a list, generate another random, check it against the list and it is working fine.
Is there a more compact way of doing this in C#?
Here is my full code after using Linq for shuffling.
class Program
{
static void Main(string[] args)
{
string [] cardValues = { "A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K" };
string [] cardSuites = { "HEARTS", "CLUBS", "DIAMONDS", "SPADES" };
List<string> deckOfCards = new List<string>();
foreach(string cardsuit in cardSuites)
{
foreach(string cardvalues in cardValues)
{
deckOfCards.Add(cardvalues + "-" + cardsuit);
}
}
for(int i = 0; i <= 10; i++)
{
List<string> pokerHand = new List<string>();
Random rand = new Random();
deckOfCards = deckOfCards.Select(x => new { card = x, rand = rand.Next() }).OrderBy(x => x.rand).Select(x => x.card).ToList();
for(int x = 0; x < 5; x++)
{
pokerHand.Add(deckOfCards[x]);
}
Console.WriteLine(String.Join(", ", pokerHand));
}
Console.ReadLine();
}
}
}

Here is one way to shuffle using linq. The 5 random cards are the first 5 items in the list. :
class Program
{
static void Main(string[] args)
{
List<string> deck = new List<string>() {
"S2", "S3", "S4", "S5", "S6", "S7", "S8", "S9", "ST", "SJ", "SQ", "SK", "SA",
"H2", "H3", "H4", "H5", "H6", "H7", "H8", "H9", "HT", "HJ", "HQ", "HK", "HA",
"C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CT", "CJ", "CQ", "CK", "CA",
"D2", "D3", "D4", "D5", "D6", "D7", "D8", "D9", "DT", "DJ", "DQ", "DK", "DA"
};
Random rand = new Random();
deck = deck.Select(x => new { card = x, rand = rand.Next() }).OrderBy(x => x.rand).Select(x => x.card).ToList();
}
}

You could use MoreLINQ. Simply install it from NuGet.
MoreLINQ gives you a Shuffle method. So you can do something like the following:
List<Card> deck = GetDeck();
List<Card> randomFiveCards = deck.Shuffle().Take(5).ToList();

A valid and efficient algorithm is to pick a random index between 0 and n-1 (where n is the number of cards), exchange the last card with the card at that index. Then pick a random index between 0 and n-2 and exchange second-last card with the card at that index.
Repeat other three times with n-3, n-4 and n-5 and your five randomly chosen cards will be at the end of the array.

how to combine same elements and sum their values in lists in C# [closed]

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I've two lists that are same size. First list has some titles and the second list has also values of first list's elements. For example;
var first = {"1", "saka", "2", "1", "1", "3", "saka", "1", "stack", "3"};
var second = {20, 23, 25, 30, 20, 15, 16, 61, 34, 35};
I want 2 new lists that contains combined same elements of mentioned as above and their sums.
var F = {"1", "saka", "2", "3", "stack"}
var S = {131, 39, 25, 50, 34}
How can I do this?

private void hereIsYourAnswer()
{
string [] first = { "1", "saka", "2", "1", "1", "3", "saka", "1", "stack", "3" };
int [] second = { 20, 23, 25, 30, 20, 15, 16, 61, 34, 35 };
List<String> F = new List<string>();
List<int> S = new List<int>();
for (int i = 0; i < first.Length; i++)
{
if (F.Contains(first[i]))
S[F.IndexOf(first[i])] += second[i];
else
{
F.Add(first[i]);
S.Add(second[i]);
}
}
for (int i = 0; i < S.Count; i++)
MessageBox.Show(F[i] + " = " + S[i].ToString());
//Output
//1=131
//saka=39
//2=25
//3=50
//stack=34
}