#每日一题 数据处理

let arr = [ { price: 400, rules: [1000, 100], count: 3 }, { price: 210, rules: [1000, 100], count: 4 }, { price: 130, rules: [199, 30], count: 9 }, { price: 130, rules: [], count: 9 }, { price: 500, rules: [100...