怎么循环判断第一层的dayDTOList.saleDate是否等于第二次的dayDTOList.saleDate？ 如果相等就把第二层里面的所有属性往上移一层，也就是和它父级相同

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手机太难打代码了 最简单的就是 重新定义一个 数组接受新数据 双层循环