C#練習題答案: 多指數【難度：0級】--景越C#經典程式設計題庫,1000道C#基礎練習題等你來挑戰

多指數【難度:0級】:

答案1:

using System;
using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Skip(1).Where((x, i) => x % (i + 1) == 0).ToList();
  }
}​

           

答案2:

using System;
using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((v, i) => i != 0 &amp;&amp; v % i == 0).ToList();
  }
}​

           

答案3:

using System;
using System.Linq;
using System.Collections.Generic;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((v, i) => i != 0 &amp;&amp; v % i == 0).ToList();
  }
}​

           

答案4:

using System;
using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((x, i) => i != 0 &amp;&amp; x % i == 0).ToList();
  }
}​

           

答案5:

using System;
using System.Linq;
using System.Collections.Generic;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((x, i) => i != 0 &amp;&amp; x % i == 0).ToList();
  }
}​

           

答案6:

using System;
using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((x, i) => (i != 0 &amp;&amp; x % i == 0)).ToList();
  }
}​

           

答案7:

using System;
using System.Collections.Generic;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    var list = new List<int>();
    for(var i = 1; i < xs.Count; i++){
      if(xs[i]%i == 0) list.Add(xs[i]);
    }
    return list;
  }
}​

           

答案8:

using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
    => xs.Where((e,i)=> i > 0 &amp;&amp; e%i == 0).ToList();
}​

           

答案9:

using System;
using System.Collections.Generic;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    var finalList = new List<int>();
    for(int i = 1; i < xs.Count; i++)
    {
      if(xs[i]%i == 0) finalList.Add(xs[i]);
    }
    return finalList;
  }
}​

           

答案10:

using System;
using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs
      .Select((val, id) => new {val, id})
      .Skip(1)
      .Where(v => v.val % v.id == 0)
      .Select(v => v.val)
      .ToList();
  }
}​

           

答案11:

using System;
using System.Collections.Generic;
using System.Linq;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((t, i) => i > 0 &amp;&amp; t % i == 0).ToList();
  }
}​

           

答案12:

using System;
using System.Linq;
using System.Collections.Generic;

public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs)
  {
    return xs.Where((t, i) => i > 0 &amp;&amp; t % i == 0).ToList();
  }
}​

           

答案13:

using System;
using System.Collections.Generic;
using System.Linq;
public static class Kata
{
    public static List<int> MultipleOfIndex(List<int> xs) => xs.Where((x, i) => i != 0 &amp;&amp; x % i == 0).ToList();
}​

           

答案14:

using System;
using System.Linq;
using System.Collections.Generic;
public static class Kata
{
  public static List<int> MultipleOfIndex(List<int> xs) =>
  xs.Where((x,i) => i != 0 &amp;&amp; x % i == 0).ToList();
}​

           

答案15:

using System;
using System.Collections.Generic;

public static class Kata
{
    public static List<int> MultipleOfIndex(List<int> xs)
    {
      List<int> newLst = new List<int>();

      for (int i = 1; i < xs.Count; i++)
      {
        if (xs[i] % i == 0)
          newLst.Add(xs[i]);
      }
      return newLst;
    }
}​