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copied!<p>EDIT: code below groups unique tokens with count</p> <pre><code>string[] target = src.Split(new char[] { ' ' }); var results = target.GroupBy(t => new { str = t, count = target.Count(sub => sub.Equals(t)) }); </code></pre> <p>This is finally starting to make more sense to me...</p> <p>EDIT: code below results in count correlated with target substring:</p> <pre><code>string src = "for each character in the string, take the rest of the " + "string starting from that character " + "as a substring; count it if it starts with the target string"; string[] target = {"string", "the", "in"}; var results = target.Select((t, index) => new {str = t, count = src.Select((c, i) => src.Substring(i)). Count(sub => sub.StartsWith(t))}); </code></pre> <p>Results is now:</p> <pre><code>+ [0] { str = "string", count = 4 } <Anonymous Type> + [1] { str = "the", count = 4 } <Anonymous Type> + [2] { str = "in", count = 6 } <Anonymous Type> </code></pre> <p>Original code below:</p> <pre><code>string src = "for each character in the string, take the rest of the " + "string starting from that character " + "as a substring; count it if it starts with the target string"; string[] target = {"string", "the", "in"}; var results = target.Select(t => src.Select((c, i) => src.Substring(i)). Count(sub => sub.StartsWith(t))).OrderByDescending(t => t); </code></pre> <p>with grateful acknowledgement to <a href="https://stackoverflow.com/questions/541954/how-would-you-count-occurences-of-a-string-within-a-string-c">this previous response</a>.</p> <p>Results from debugger (which need extra logic to include the matching string with its count):</p> <pre><code>- results {System.Linq.OrderedEnumerable<int,int>} - Results View Expanding the Results View will enumerate the IEnumerable [0] 6 int [1] 4 int [2] 4 int </code></pre>

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