{"id":31486,"date":"2022-12-14T14:56:21","date_gmt":"2022-12-01T01:41:21","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e5%af%b9list%e8%bf%9b%e8%a1%8c%e6%8e%92%e5%ba%8f\/"},"modified":"2024-04-29T05:15:29","modified_gmt":"2024-04-28T21:15:29","slug":"java-%e5%af%b9list%e8%bf%9b%e8%a1%8c%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e5%af%b9list%e8%bf%9b%e8%a1%8c%e6%8e%92%e5%ba%8f\/","title":{"rendered":"[java] \u5bf9list\u8fdb\u884c\u6392\u5e8f"},"content":{"rendered":"

\u6211\u6574\u7406\u4e86\u4e00\u4e9b\u5173\u4e8e\u5728Java\u4e2d\u5bf9\u6570\u7ec4\u548c\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u7684\u65b9\u6cd5\u3002\u8fd9\u662f\u7ed9\u6211\u81ea\u5df1\u7684\u5907\u5fd8\u5f55\u3002<\/p>\n

\u6392\u5217<\/h1>\n
int<\/span>[]<\/span> array<\/span> =<\/span> {<\/span> 3<\/span>,<\/span> 1<\/span>,<\/span> 4<\/span>,<\/span> 1<\/span>,<\/span> 5<\/span>,<\/span> 9<\/span>,<\/span> 2<\/span>,<\/span> 6<\/span>,<\/span> 5<\/span>,<\/span> 3<\/span>,<\/span> 5<\/span>,<\/span> 8<\/span> };<\/span>\r\nArrays<\/span>.<\/span>sort<\/span>(<\/span>array<\/span>);<\/span>\r\n<\/code><\/pre>\n
Integer<\/span>[]<\/span> array<\/span> =<\/span> {<\/span> 3<\/span>,<\/span> 1<\/span>,<\/span> 4<\/span>,<\/span> 1<\/span>,<\/span> 5<\/span>,<\/span> 9<\/span>,<\/span> 2<\/span>,<\/span> 6<\/span>,<\/span> 5<\/span>,<\/span> 3<\/span>,<\/span> 5<\/span>,<\/span> 8<\/span> };<\/span>\r\nArrays<\/span>.<\/span>sort<\/span>(<\/span>array<\/span>,<\/span> Collections<\/span>.<\/span>reverseOrder<\/span>());<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8e\u4f7f\u7528\u4e86Collections\u7c7b\uff0c\u6240\u4ee5\u5ba3\u8a00\u4e3a\u6574\u6570\u6570\u7ec4\u3002<\/p>\n
\u5217\u51fa<\/h1>\n
ArrayList<\/span><<\/span>Integer<\/span>><\/span> al<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>2<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>7<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>1<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>8<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>2<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>8<\/span>);<\/span>\r\nCollections<\/span>.<\/span>sort<\/span>(<\/span>al<\/span>);<\/span>\r\n<\/code><\/pre>\n
ArrayList<\/span><<\/span>Integer<\/span>><\/span> al<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>2<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>7<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>1<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>8<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>2<\/span>);<\/span>\r\nal<\/span>.<\/span>add<\/span>(<\/span>8<\/span>);<\/span>\r\nCollections<\/span>.<\/span>sort<\/span>(<\/span>al<\/span>,<\/span> Collections<\/span>.<\/span>reverseOrder<\/span>());<\/span>\r\n<\/code><\/pre>\n
\u5e94\u7528\uff08\u7528\u6237\u5b9a\u4e49\u7c7b\u3001\u591a\u4e2a\u503c\uff09<\/h1>\n
import<\/span> java.util.ArrayList<\/span>;<\/span>\r\nimport<\/span> java.util.Comparator<\/span>;<\/span>\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n\r\n        List<\/span><<\/span>Item<\/span>><\/span> itemList<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n        itemList<\/span>.<\/span>add<\/span>(<\/span>new<\/span> Item<\/span>(<\/span>4<\/span>,<\/span> \"Book\"<\/span>,<\/span> 1000<\/span>));<\/span>\r\n        itemList<\/span>.<\/span>add<\/span>(<\/span>new<\/span> Item<\/span>(<\/span>2<\/span>,<\/span> \"Bag\"<\/span>,<\/span> 3000<\/span>));<\/span>\r\n        itemList<\/span>.<\/span>add<\/span>(<\/span>new<\/span> Item<\/span>(<\/span>3<\/span>,<\/span> \"Calendar\"<\/span>,<\/span> 2000<\/span>));<\/span>\r\n        itemList<\/span>.<\/span>add<\/span>(<\/span>new<\/span> Item<\/span>(<\/span>1<\/span>,<\/span> \"pen\"<\/span>,<\/span> 200<\/span>));<\/span>\r\n\r\n        \/\/ id\u6607\u9806\u30bd\u30fc\u30c8<\/span>\r\n        itemList<\/span>.<\/span>sort<\/span>(<\/span>Comparator<\/span>.<\/span>comparing<\/span>(<\/span>Item:<\/span>:<\/span>getId<\/span>));<\/span>\r\n\r\n        \/\/ id\u964d\u9806\u30bd\u30fc\u30c8<\/span>\r\n        itemList<\/span>.<\/span>sort<\/span>(<\/span>Comparator<\/span>.<\/span>comparing<\/span>(<\/span>Item:<\/span>:<\/span>getId<\/span>).<\/span>reversed<\/span>());<\/span>\r\n\r\n        \/\/ kind\u6607\u9806\u30bd\u30fc\u30c8<\/span>\r\n        itemList<\/span>.<\/span>sort<\/span>(<\/span>Comparator<\/span>.<\/span>comparing<\/span>(<\/span>Item:<\/span>:<\/span>getKind<\/span>));<\/span>\r\n\r\n        \/\/ kind\u964d\u9806\u30bd\u30fc\u30c8<\/span>\r\n        itemList<\/span>.<\/span>sort<\/span>(<\/span>Comparator<\/span>.<\/span>comparing<\/span>(<\/span>Item:<\/span>:<\/span>getKind<\/span>).<\/span>reversed<\/span>());<\/span>\r\n\r\n    }<\/span>\r\n}<\/span>\r\n\r\nclass<\/span> Item<\/span> {<\/span>\r\n    int<\/span> id<\/span>;<\/span>\r\n    String<\/span> kind<\/span>;<\/span>\r\n    int<\/span> price<\/span>;<\/span>\r\n\r\n    Item<\/span>(<\/span>int<\/span> id<\/span>,<\/span> String<\/span> kind<\/span>,<\/span> int<\/span> price<\/span>)<\/span> {<\/span>\r\n\r\n        this<\/span>.<\/span>id<\/span> =<\/span> id<\/span>;<\/span>\r\n        this<\/span>.<\/span>kind<\/span> =<\/span> kind<\/span>;<\/span>\r\n        this<\/span>.<\/span>price<\/span> =<\/span> price<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> int<\/span> getId<\/span>()<\/span> {<\/span>\r\n        return<\/span> id<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> String<\/span> getKind<\/span>()<\/span> {<\/span>\r\n        return<\/span> kind<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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