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Set the return type of the operation as Point structure.
将操作的返回类型设置为Point结构。
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Add a public field named distance to Point, and set its type to int.
向Point添加名为distance的public字段，并将其类型设置为int。
youdao
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Add a public field named distance to Point, and set its type to int.
向Point添加名为distance的public字段，并将其类型设置为int。
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