swaps two buffers . concode_field_sep String a concode_elem_sep String b concode_elem_sep int[] cost concode_elem_sep int[] back concode_field_sep String findNearest concode_elem_sep String findNearest concode_elem_sep int min concode_elem_sep int editDistance concode_elem_sep int calc
void function ( ) { int [ ] loc0 = cost ; cost = back ; back = loc0 ; }