I want to find integer value from a string. For example, given a String like "Ahmedabad to Gandhinagar Distance:29km(about 31 mins)"
I want to fetch only 29 from the given String because i want to compare this 29 kilometers to other kilometers.
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Which language are you using? You specify both C# and Java. Is the string from which you're extracting the value regular - is it always in the same format? If so, you could find the ':' and extract the digits that follow it.Rich Turner– Rich Turner2011-04-14 05:42:17 +00:00Commented Apr 14, 2011 at 5:42
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1What is the language you want this answer for.The Lazy Coder– The Lazy Coder2011-04-14 05:42:59 +00:00Commented Apr 14, 2011 at 5:42
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3 Answers
In C#, you can use a Regex.Match to pull out substrings if you use groups in the regex (note this is not tested...). There is probably a similar mechanism in Java, but I don't know it off the top of my head:
var myString = @"Ahmedabad to Gandhinagar Distance:29km(about 31 mins)";
var myRegex = @".*:(\d*)km.*";
var match = Regex.Match(myString, myRegex);
if (match.Success)
{
// match.Groups contains the match "groups" in the regex (things surrounded by parentheses)
// match.Groups[0] is the entire match, and in this case match.Groups[1] is the km value
var km = match.Groups[1].Value;
}
Comments
Use this regex
/[:](\d+)/
and you'll have the match as 29. Here is a rubular link with your example.
Comments
Try this code in C#
string str = "Ahmedabad to Gandhinagar Distance:29km(about 31 mins)";
str = str.Substring(str.IndexOf(':')+1, str.IndexOf("km") - str.IndexOf(':')-1); ;
int distance = Convert.ToInt32(str);
