如何在其索引中添加数字 [英] How to add a number to its index

问题描述

我有一个数字，让我们假设345624354，因为该数字的索引是012345678，所以我想将它们添加为3 + 0、4 + 1 5 + 2，依此类推.

I am having a number let us assume i.e 345624354 and as the index of this number is 012345678 i would like to add them as 3+0, 4+1 5+2 and so on any idea please

推荐答案

/// <summary>
    /// Gives Number with each digit added with it''s according index
    /// </summary>
    /// <param name="num">Number you want to have Index adding with each digit i.e 345624354</param>
    /// <returns>returns number with index added i.e 35796991212</returns>
    private long GetMyNo(int num)
    {
        string input = num.ToString();
        StringBuilder output = new StringBuilder();
        int i = 0;
        foreach (char c in input)
        {
            output.Append(int.Parse(c.ToString()) + (i++));
        }
        return long.Parse(output.ToString());
    }

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Please vote and Accept Answer if it Helped.

可以拆分使用循环将数字转换成各个数字，然后除/余，或者将其转换为字符串，然后对字符使用foreach循环:

Either split the number into the various digits using a loop and divide / remainder, or convert it to a string and use a foreach loop on the characters:

while (myInt > 0)
   {
   myDigit = myInt % 10;
   myInt /= 10;
   ... deal with myDigit ...
   }

string myNumber = myInt.ToString();
int index = 0;
foreach (character c in myNumber)
   {
   ... deal with each digit ...
   }

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