string - How to iterate backwards through an array? -

i want take each value end of array , iterate backwards middle of array, adding each value string:

  (int x = testarray.length - 1; x > testarray.length/2; x--){      b+=testarray[x];   } 

it doesn't seem work because when print b empty space. possible iterate backwards through array , add values string. string values.

one thing note if array's length odd number, code wont work, since length divided 2 decimal. convert middle index int. should using stringbuilder if you're using quite bit of concatenations.

string[] names = {", , henry, ", ", david", "bob"}; stringbuilder allnames = new stringbuilder();  (int = names.length - 1; >= (int) names.length/2; i--) {     allnames.append(names[i]); }  system.out.println(allnames);