[英]What does return -1 do in java?
例如,如果在列表中搜索元素並返回 -1,則似乎找不到該元素。 但為什么-1? 返回 0、1 和 -1 之間有什么區別。
當該方法返回 -1 時,表示未找到您要搜索的內容。 相反,如果您得到一個正數,那么這就是您在數組中搜索的元素的索引。
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