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Get all years between TWO years returned as a array ?

Posted on 2009-04-01
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Last Modified: 2012-05-06
Hello,

I have this:

startYear = 2005
todaysYear = 2009

Now I want all years between those 2 dates , this would be 2006,2007,2008 returned in a array does there exist already such a function?

I want to iterate in a for loop through that array and get access to every single year and do some stuff with it.
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Comment
Question by:MSFanboy
6 Comments
 
LVL 26

Expert Comment

by:Anurag Thakur
ID: 24040504
jsut create a function and loop in that for the start year to the end year and add the years found in a List<int> object
you will get a int list and you can do whatever you want to do that

i dont think there is a function which will give you the year values between 2 dates
yes you can get the count of no. of years from 2 dates
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LVL 4

Accepted Solution

by:
amazingwolf1 earned 1000 total points
ID: 24040647
here it is, call it like this:

int[] res = GetYears(2009, 2005);
public int[] GetYears(int iUpper, int iLower)
    {
        int iGap;
        int[] resultArray;
 
        iGap = iUpper - iLower - 1;
 
        // check if this is the same year
        if (iGap <= 0)
        {
            resultArray = new int[1];
            resultArray[0] = iUpper;
        }
        else
        {
            resultArray = new int[iGap];
            for (int i = iLower + 1, index = 0; i < iUpper; i++, index++)
            {
                resultArray[index] = i;
            }
        }
 
        return resultArray;
    }

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LVL 86

Assisted Solution

by:Mike Tomlinson
Mike Tomlinson earned 1000 total points
ID: 24040775
Not sure why you need an array...couldn't you just use your year values directly in a for loop?

            int startYear = 2005;
            int stopYear = 2009;
            for (int year = startYear; year <= stopYear; year++)
            {
                Console.WriteLine(year.ToString());
            }

But if you really want an Array, I like ragi's suggestion:
(one your your PAQs dealt w/ VS2008 so I'm pretty sure you have List<T>)
(furthermore, instead of an Array, why not just deal with the List directly?)
        private void button1_Click(object sender, EventArgs e)
        {
            int[] years = GetYears(2005, 2009);
            foreach (int year in years)
            {
                Console.WriteLine(year.ToString());
            }
        }
 
        private int[] GetYears(int startYear, int endYear)
        {
            List<int> years = new List<int>();
            for (int y = startYear; y <= endYear; y++)
            {
                years.Add(y);
            }
            return years.ToArray();
        }

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Author Comment

by:MSFanboy
ID: 24041976
Hm seems the info I gave u was not 100% from my side:

The user inputs e.g. "X" what means X years back into the past. I wanted a native method for it but it does not exist so I had to write my own:

You should NOT take todayYear = 2009 literally it can be also 2010,2200 or 25000 ... so I ca not guess this date just get DateTime.Now and do stuff on it



foreach (var s in YearsList(6))
            {
                    Console.WriteLine("Jahr: " + s);
            }
 
public string[] YearsList(int value)
        {
            var yearsArray = new string[value];
            for (int i = 0; i < value; i++)
            {
                yearsArray[i] = DateTime.Now.AddYears(-i).ToString("yyyy");
            }
 
            return yearsArray;
        }

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0
 
LVL 4

Expert Comment

by:amazingwolf1
ID: 24047497
Since the original questions was not clear enough, and MSFanboy did not state clearly that he ONLY wants a native function. I gave him a full solution here with the code, and I feel it would be an error to approve to MSFanboy request.
0
 
LVL 4

Expert Comment

by:amazingwolf1
ID: 24071733
I recommend #3 - Accept one or more Expert posts as the answer. I suggest posts
http:#a24040647, http:#a24040775, http:#a24041976 will be the answers.
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