如何在变量中均匀分布元素数组 [英] How do I distribute array of elements evenly across a variable

问题描述

我有以下列表

 List< int> lstuser =  new  List< int>（）; 
 lstuser.Add（ 101 ）; 
 lstuser.Add（ 102 ）; 
 lstuser.Add（ 103 ）; 
 lstuser.Add（ 104 ）; 

int assigntovariable = 0;



我需要随后将上面的列表值分配给变量。这是变量将在for循环和&它的长度可以从1到任何不等。



for（int i = 0; i< 10; i ++）

{

assigntovariable = // lstuser从一个接一个按顺序

assignedtouser = 101，如果i = 0

assignedtouser = 102，如果i = 1

assignedtouser = 103，如果i = 2

assignedtouser = 104，如果i = 3

assignedtouser = 101，如果i = 4

assignedtouser = 102，如果i = 5



..将继续直到循环结束



}



以下是我试过的...但是我觉得它不是很好..请给我一个更好的解决方案..谢谢你提前..

< pre lang =   C＃>列表与安培; LT; INT&安培; GT; lstuser =  new  List& lt; int& gt;（）; 
 lstuser.Add（ 101 ）; 
 lstuser.Add（ 102 ）; 
 lstuser.Add（ 103 ）; 
 lstuser.Add（ 104 ）; 
  int  userselected =  0 ; 
  int  j =  0 ，x =  0 ; 
 
  for （ int  i =  0 ; i& lt;  10 ; i ++）
 {
  if （x ==  0  || x == lstuser.Count）
x =  0 ; 
  for （j = x; j& lt; lstuser.Count; j ++）
 {
  if （i& gt; j）
 {
 userselected = lstuser [j]; 
  if （x == lstuser.Count）
 x =  0 ; 
 x = j +  1 ; 
} 
  else  
 {
 userselected = lstuser [i]; 
 x = j + 1; 
  if （x == lstuser.Count）
 x =  0 ; 
} 
  break ; 
} 
 
  int  s = userselected; 
} < /   pre  >  

我的尝试：

 List< int> lstuser =  new  List< int>（）; 
 lstuser.Add（ 101 ）; 
 lstuser.Add（ 102 ）; 
 lstuser.Add（ 103 ）; 
 lstuser.Add（ 104 ）; 
  int  userselected =  0 ; 
  int  j =  0 ，x =  0 ; 
 
  for （ int  i =  0 ; i <   10 ; i ++）
 {
  if （x ==  0  || x == lstuser.Count）
x = < span class =code-digit> 0 ; 
  for （j = x; j <  lstuser.Count; j ++）
 {
  if （i >  j）
 {
 userselected = lstuser [j]; 
  if （x == lstuser.Count）
 x =  0 ; 
 x = j +  1 ; 
} 
  else  
 {
 userselected = lstuser [i]; 
 x = j + 1; 
  if （x == lstuser.Count）
 x =  0 ; 
} 
  break ; 
} 
 
  int  s = userselected; 
} 

解决方案

最简单的方法是使用模数运算符'％'

< pre lang =C＃> List< int> lstuser = new List< int>（）;
lstuser.Add（ 101 ）;
lstuser.Add（ 102 ）;
lstuser.Add（ 103 ）;
lstuser.Add（ 104 ）;
for （ int i = 0 ; i < 10 ; i ++）
{
int assignedToUser = lstUser [i％lstUser.Count];
...
}

模数运算符在除法后返回余数：因此x％10将始终为0到9，x％ 3将是0到2，x％lstUser.Count将为0到（列表中的数字元素减1），这是列表中索引所需的内容。

I have below list

List<int> lstuser = new List<int>();
lstuser.Add(101);
lstuser.Add(102);
lstuser.Add(103);
lstuser.Add(104);

int assigntovariable =0;

I need to assign the above list values to a variable subsequently. That is variable will be inside a for loop & and its length may vary from 1 to any.

for (int i =0;i<10;i++)
{
assigntovariable = //lstuser from one by one in order as
assignedtouser = 101, if i = 0
assignedtouser = 102, if i = 1
assignedtouser = 103, if i = 2
assignedtouser = 104, if i = 3
assignedtouser = 101, if i = 4
assignedtouser = 102, if i = 5

..it will continue till the end of loop

}

Below is what i tried ..but its not good one i think.. please provide me a better solution..Thanks in advance..

<pre lang="C#">List&lt;int&gt; lstuser = new List&lt;int&gt;();
            lstuser.Add(101);
            lstuser.Add(102);
            lstuser.Add(103);
            lstuser.Add(104);
            int userselected = 0;
            int j = 0, x = 0;

            for (int i = 0; i &lt; 10; i++)
            {
                if (x == 0 || x == lstuser.Count)
                     x = 0;
                for (j = x; j &lt; lstuser.Count; j++)
                {
                    if (i &gt; j)
                    {
                        userselected = lstuser[j];
                        if (x == lstuser.Count)
                            x = 0;
                        x = j + 1;
                    }
                    else
                    {
                        userselected = lstuser[i];
                        x = j+1;
                        if (x == lstuser.Count)
                            x = 0;
                    }
                    break;
                }

                int s = userselected;
            }</pre>

What I have tried:

List<int> lstuser = new List<int>();
            lstuser.Add(101);
            lstuser.Add(102);
            lstuser.Add(103);
            lstuser.Add(104);
            int userselected = 0;
            int j = 0, x = 0;

            for (int i = 0; i < 10; i++)
            {
                if (x == 0 || x == lstuser.Count)
                     x = 0;
                for (j = x; j < lstuser.Count; j++)
                {
                    if (i > j)
                    {
                        userselected = lstuser[j];
                        if (x == lstuser.Count)
                            x = 0;
                         x = j + 1;
                    }
                    else
                    {
                        userselected = lstuser[i];
                        x = j+1;
                        if (x == lstuser.Count)
                            x = 0;
                    }
                    break;
                }

                int s = userselected;
            }

解决方案

The easiest way is to use the modulus operator '%'

List<int> lstuser = new List<int>();
lstuser.Add(101);
lstuser.Add(102);
lstuser.Add(103);
lstuser.Add(104);
for (int i = 0; i < 10; i++)
   {
   int assignedToUser = lstUser[i % lstUser.Count];
   ...
   }

The Modulus operator returns the remainder after a division: so x % 10 will always be 0 to 9, x % 3 will be 0 to 2, and x % lstUser.Count will be 0 to (number elements in the List minus one), which is what you need for an index into the list.

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