如何解析反向波兰表示法 JSON 数组

Question

I have an input:

{"expressions":["16 10 / 5 * 20 +","10 11 0 + 1 * + 0 9 - -","13 0 * 11 - 8 -","0 6 + 13 17 * -","15 19 14 1 - + * 1 1 / /"],"id":"1c5322060eed42ca932acfc263063b10"}

I want to get the array [["16","10","/","5","*","20","+"],["10","11","0",…]…]

Answer 1

Just parse JSON and split result by spaces:

 const input = '{"expressions":["16 10 / 5 * 20 +","10 11 0 + 1 * + 0 9 - -","13 0 * 11 - 8 -","0 6 + 13 17 * -","15 19 14 1 - + * 1 1 / /"],"id":"1c5322060eed42ca932acfc263063b10"}' const expressions = JSON.parse(input).expressions console.log(expressions.map( expression => expression.split(' ') ))