Question

Need to split a string which is a combination of different materials. Need to extract all the materials by using a reg expression.

Possible inputs are

 65%POLYESTER 30%COTTON 5%WOOL
 95% COTTON DENIM 5% OTHERS
 100% HS POLYPROPYLENE
 100% POLYPROPYLENE HEATSET

Outputs should be

65% Polyester
30% Cotton
5% wool

Tried this

static IList<string> SplitContent(string input)
        {
            var list = new List<string>();
            var regex = new Regex("\\d*\\.\\d+%?[A-Za-z \\s]");
            var matches = regex.Matches(input);
            foreach (Match item in matches)
            {
                list.Add(item.Value);
            }
            return list;
        }

But it is not returning any matches. Can somebody help?

Answer 1

a better way would be

List<string> output=Regex.Matches(yourInput,@"\d+(\.\d+)?%?[a-zA-Z\s]+")
                         .Cast<Match>()
                         .Select(x=>Regex.Replace(x.Value,@"(%)(?=\S)","$1 "))
                         .ToList();

---

\d+ matches 1 to many digits

(\.\d+)? matches a dot and 1 to many digits 0 to 1 time(?)

[a-zA-Z\s]+ matches any character within that class 1 to many times..

The match would break when there is a character which is not [a-zA-Z\s] or when you come to end of the string