--select sort function select_sort(t)      for i=1, #t - 1 do           local min = i           for j=i+1, #t do                if t[j] < t[min]  then                     min = j                end           end           if min ~= i then                t[min], t[i] = t[i], t[min]           end      end end tb = {77, 99, 2, 334, 22, 32, 9} print("-------------before--------------") print(table.concat(tb, " ")) print("-------------after---------------") select_sort(tb) print(table.concat(tb, " "))

Sorts table elements in a given order, in-place, from table[1] to table[n], where n is the length of the table. If comp is given, then it must be a function that receives two table elements, and returns true when the first is less than the second (so that not comp(a[i+1],a[i]) will be true after the sort). If comp is not given, then the standard Lua operator < is used instead. The sort algorithm is not stable; that is, elements considered equal by the given order may have their relative positions changed by the sort.

function comp(a, b)      return a < b end table.sort(tb, comp)

table.sort(tb, function(a, b)      return a < b end)