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初始化时遍历的范围应该是
weight[0]..=bag_size
,而不是weight[0]..=weight.len()
原代码能运行是因为测试用例中的数值刚好不会对结果造成影响,如果将用例中的bag_size
改为1则运行时会越界访问数组 在线运行示例: playground