假设表达式中包含两种括号：圆括号和方括号，其嵌套顺序随意，即([]())或[([])]等为正确的格式，[(])或([())或(()]均为不正确的格式。检验括号是否匹配可以用堆栈来实现。-The assumption that expression contains two brackets: parentheses and brackets, the nested sequence of random, that is, or ([]()) [([])] such as the correct format ,[(]) or ([() ) or (()] are not the correct format. test match brackets can be used to achieve stack.