 using System;
using System.Collections.Generic;

class NameGenerator
{
    List<string> first;
    Dictionary<string, List<string>> last;
    readonly List<string> lastCopy;
    int unusedCount;
    
    public NameGenerator(List<string> first, List<string> last)
    {
        this.first = new List<string>(first);
        this.lastCopy = new List<string>(last);
        this.last = new Dictionary<string, List<string>>(first.Count);
        unusedCount = first.Count * last.Count;
    }
    public List<string> GetNames(int count)
    {
        var result = new List<string>(count < unusedCount ? count : unusedCount);
        for(int i = 0; i < count && unusedCount > 0; ++i)
        {
            var fSRef = first[Random.Range(0, first.Count)];
            if(!last.ContainsKey(fSRef))
            {
                last[fSRef] = new List<string>(lastCopy);
            }
            var lLRef = last[fSRef];
            var lSRef = lLRef[Random.Range(0,lLRef.Count)];
            result.Add(fSRef + lSRef);//Use string Builder to improve performance, instead.
            last[fSRef].Remove(lSRef);
            if(last[fSRef].Count < 1)
                first.Remove(fSRef);
            --unusedCount;
        }
        return result;
    }
}
class Program {
    static void Main(string[] args) 
    {
        var names = new NameGenerator(
            new List<string>{"A", "B", "C", "D"},
            new List<string>{"1", "2", "3", "4"}
        ).GetNames(10);
        foreach(var name in names)
            Debug.Log(name);
    }
}
/* Helper classes: Unnecessary in Unity Engine.
*
*/
class Random
{
    static System.Random rand = new System.Random();
    public static int Range(int min, int max) => rand.Next(min,max);
}
class Debug{
    public static void Log(string str) => Console.WriteLine(str);
}
/*
*
*/

created 5 years ago

C Sharp Online Compiler

Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.

Read inputs from stdin

OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

using System;
 
namespace Sample
{
  class Test
    {
      public static void Main(string[] args)
       {
         string name;
         name = Console.ReadLine();
         Console.WriteLine("Hello {0} ", name);
	}
     }
}

About C Sharp

C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.

You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.

Syntax help

Data types

Data Type	Description	Range	size
int	To store integers	-2,147,483,648 to 2,147,483,647	4 bytes
double	to store large floating point numbers with decimals	can store 15 decimal digits	8 bytes
float	to store floating point numbers with decimals	can store upto 7 decimal digits	4 bytes
char	to store single characters	-	2 bytes
string	to stores text	-	2 bytes per character
bool	to stores either true or false	-	1 bit

Variables

Syntax

datatype variable-name = value;

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.

if(conditional-expression) {
   // code
} 
else {
   // code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement) {
  // code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {
 // code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition);

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

data-type[] array-name;

Methods

Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.

Syntax

static void method-name() 
{
  // code to be executed
}