string - Stick delineated between array elegantly -

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At any time, I need to string from the list that has some kind of depiction, I have something like this < / P> 

  string output = ""; For (int i = 0; i & lt; array.label; i ++) output + = array [i] + ","; Return output;

But it always adds a comma to the end where I do not want this. To avoid this I have to do 

  string output = ""; For (int i = 0; i

Is there any more great way to achieve this goal?

is an option: 

  string output = array [0] ; For (int i = 1; i & lt; array.label; i ++) output + = "," + array [i]; Return output;

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