c# - Counting the amount of instances of a certain string in a list of objects, then formatting it in a certain way -


i have list of objects contain string. when enumerate through them, want able identify matching ones , group them together, format them string so: a005(x3), b006(x5), c002(x7),d001(x9).

can shed light on way this?

this code should give desired result assuming have collection of strings.

strlist.groupby(x => x) .select(x => string.format("{0}(x{1})", x.key, x.count()));

here test program:

var values = new[] {"a005", "b006", "c002", "d001",             "b006", "a005", "d001", "c002", "a005" };  var uniquevalues = values                 .groupby(x => x)                 .select(x => string.format("{0}(x{1})", x.key, x.count()));  console.writeline(string.join(", ", uniquevalues));

produces output:

a005(x3), b006(x2), c002(x2), d001(x2)

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