c# - check if array position is null or a space?

Question

I need to check if the final place of an array is equal to a space " ". My code below throws an out of range exception and the words variable includes a space at the end through a regex pattern.

Code:

string[] words = pattern.Split(input);
int limit = words.Count();

if(words[limit] == " ")
{ limit = limit - 1;  }

Pilling · Accepted Answer · 2016-12-26 03:43:52Z

2

    string[] words = pattern.Split(input);
    int limit = words.Count();

    if(words[limit-1] == " ")
    { limit = limit - 1;  }

The array position needs to be -1 when a count() is used. Thanks.

answered Dec 26, 2016 at 3:43

Pilling

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Comments

Backs · Accepted Answer · 2016-12-26 02:53:57Z

1

.Count() returns the number of elements in your array, but the first elements index is 0, so the last index should be words.Count()-1

edited Dec 26, 2016 at 2:53

Backs

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answered Dec 26, 2016 at 2:44

d3vi4nt

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2 Comments

Pilling Over a year ago

The final element will equal to 'limit' in this case. How do it write an if-statement if final element == (" ") ?

Pilling Over a year ago

Thanks for that. I totally spaced out on that one. Cheers.

Pratyay · Accepted Answer · 2016-12-26 05:44:09Z

0

You can also use the following code. The IsNullOrWhiteSpace method checks if a given string only consists null or white space characters.

    string[] words = pattern.Split(input);
    int limit = words.Length;

    if(String.IsNullOrWhiteSpace(words[limit-1]))
    {
      limit-=1; //edit value of limit based on your own logic
    }

answered Dec 26, 2016 at 5:44

Pratyay

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