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make dictionary that will loop every 9 numbers. C# [closed]

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Im new to programming and sorry if I cant explain properly. I am trying to iterate through a list that has items in it in multiples of 9. So the list can have 9,18,27.. items.
I have the code working for it to read when there is 9 using this dictionary. But I would like it work for any amount in multiples of 9.
var alphabets = new Dictionary<int, string>()
{
{1,"A2"},{2,"B2"},{3,"C2"},{4"D2"},
{5,"E2"},{6,"F2"}, {7,"G2"},{8,"H2"},
{9,"I2"}
};
So for example if there was 18 items it would like this dictionary to have this function.
var alphabets2 = new Dictionary<int, string>()
{
{1,"A2"},{2,"B2"},{3,"C2"},{4"D2"},
{5,"E2"},{6,"F2"}, {7,"G2"},{8,"H2"},
{9,"I2"},
{10,"A3"},{11,"B3"},{12,"C3"},{13"D3"},
{14,"E3"},{15,"F3"}, {16,"G3"},{17,"H3"},
{18,"I3"}
};
Thank you

As #DiplomacyNotWar commented, it sounds as if you need to input int value to convert to a correlating string value which is uniformly based on multiples of 9. If this is the case, I agree with #DiplomacyNotWar that you don't need to store anything but create a function to output the needed string value based on an int value. Here is a function that will output the pattern in your examples.
// value should be 0
string ConvertIntToSpecificString(int value)
{
// this will give you an int value 0-8
var modValue = (value - 1) % 9;
// The unicode for 'A' is 65
var firstCharValue = (char)(65 + modValue);
// This will return a whole number giving the iteration count. FE: 19 / 9 = 2
// Adding 2 to fit the pattern stated in the examples.
var secondValue = ( value / 9 ) + 2 ;
return $"{firstCharValue}{secondValue}";
}

How do increment an integer that is part of a string at each iteration of loop [closed]

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i have a string like this S02E01 and now i want to run it through a loop like 20 times but at each iteration i want to increment the number after 'E' so that we have for example S02E01,S02E02,S02E03 ..S0210,...S02E20. Please help me.

Its really simple by using some string functions: Substring, PadLeft or ToString
string mystring = "S02E00";
var template = mystring.Substring(0, mystring.Length - 2);//template = "S02E"
for(int i = 0;i <= 20; i++)
{
var result = template + i.ToString("00");
Console.WriteLine(result);
}
you could use PadLeft too => var result = template + i.ToString().PadLeft(2, '0');

Hi there I want to know how this kind of conditional statement means? if (i == 0) lowest = highest = input; [closed]

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Hi there I want to know how this kind of conditional statement means?
if (i == 0)
{
lowest = highest = input;
}

When you come across questions like this, i would recommend that you test it yourself. For instance, this can be tested in a simple console app to see what happens
class Program
{
public static void Main(string[] args)
{
int lowest = 1;
int input = 2;
int highest = 3;
Console.WriteLine("Before equality operator");
Console.WriteLine($"lowest: {lowest}");
Console.WriteLine($"highest: {highest}");
Console.WriteLine($"input: {input}");
int i = 0;
if (i == 0) lowest = highest = input;
Console.WriteLine("After equality operator");
Console.WriteLine($"lowest: {lowest}");
Console.WriteLine($"highest: {highest}");
Console.WriteLine($"input: {input}");
}
}
Output:
Before equality operator
lowest: 1
highest: 3
input: 2
After equality operator
lowest: 2
highest: 2
input: 2

int permutations in C# [closed]

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I want to implement a method with the following signature:
public int Max(int number){ }

The largest number that can be created by a digits of a given number is obtained by ordering the digits from largest to smallest. See the following code for a possible implementation.
public int Max(int number)
{
var numberAsCharArray = number.ToString().OrderByDescending(c => c).ToArray();
var largestNumberAsString = new string(numberAsCharArray);
return Int32.Parse(str);
}

Maybe not most efficient way is to cast to string and order desc
var result = int.Parse(String.Join("", digit.ToString().OrderByDescending(x => x)))

C# Console split number to digit and do math [closed]

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I have a user input, lets say 3 digit number. I want to split the numbers and add them or multiply - it doesn't matter.
This is what I tried to do:
Console.WriteLine("enter a number: ");
int userInput = Convert.ToInt32(Console.ReadLine());
string temp = userInput.ToString();
int x = 0;
foreach(char c in temp)
{
x += c;
Console.WriteLine(x);
}
Console.ReadLine();
I'm not allowed to use %
Any suggestion?!

If you want to calculate sum of digits of a number, you can read characters of the string and convert them to numbers and then use them:
string number = Console.ReadLine();
var sum = number.ToArray().Sum(x => int.Parse(x.ToString()));
Console.WriteLine(sum);
Don't forget to add using System.Linq;
Also as an option without using Linq:
string number = Console.ReadLine();
int sum = 0;
foreach (char c in number)
{
sum += int.Parse(c.ToString());
}
Console.WriteLine(sum);