{"id":37802,"date":"2024-11-26T16:58:40","date_gmt":"2024-11-26T08:58:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37802\/"},"modified":"2024-11-26T16:58:40","modified_gmt":"2024-11-26T08:58:40","slug":"%e6%80%8e%e4%b9%88%e6%b1%82%e6%95%b0%e7%bb%84%e7%9a%84%e5%92%8cjava","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37802\/","title":{"rendered":"\u600e\u4e48\u6c42\u6570\u7ec4\u7684\u548cjava"},"content":{"rendered":"<blockquote><p>\n  \u8ba1\u7b97 java \u6570\u7ec4\u5143\u7d20\u548c\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u4f7f\u7528 for \u5faa\u73af\uff0c\u904d\u5386\u6570\u7ec4\u5e76\u7d2f\u52a0\u5143\u7d20\u3002\u4f7f\u7528 stream api\uff0c\u4f7f\u7528 arrays.stream(array).sum() \u6c42\u548c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111310482759164.jpg\" class=\"aligncenter\" title=\"\u600e\u4e48\u6c42\u6570\u7ec4\u7684\u548cjava\u63d2\u56fe\" alt=\"\u600e\u4e48\u6c42\u6570\u7ec4\u7684\u548cjava\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u8ba1\u7b97\u6570\u7ec4\u5143\u7d20\u548c\uff08Java\uff09<\/strong><\/p>\n<p><strong>\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6c42\u6570\u7ec4\u5143\u7d20\u548c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 for \u5faa\u73af<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int sum = 0;\nfor (int element : array) {\n    sum += element;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 Stream API<\/strong><\/p>\n<pre>int sum = Arrays.stream(array).sum();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n<p><strong>1. \u4f7f\u7528 for \u5faa\u73af\uff1a<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a int \u53d8\u91cf sum \u521d\u59cb\u5316\u4e3a 0\u3002<\/li>\n<li>\u4f7f\u7528\u589e\u5f3a\u578b for \u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5faa\u73af\u53d8\u91cf element \u8868\u793a\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002<\/li>\n<li>\u5728\u6bcf\u4e2a\u5faa\u73af\u4e2d\uff0c\u5c06\u5f53\u524d\u5143\u7d20 element \u52a0\u5230 sum \u4e2d\u3002<\/li>\n<li>\u5faa\u73af\u7ed3\u675f\u540e\uff0csum \u5b58\u50a8\u4e86\u6570\u7ec4\u4e2d\u6240\u6709\u5143\u7d20\u7684\u548c\u3002<\/li>\n<\/ul>\n<p><strong>2. \u4f7f\u7528 Stream API\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 Arrays.stream(array) \u521b\u5efa\u4e00\u4e2a IntStream\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u5e8f\u5217\u3002<\/li>\n<li>\u4f7f\u7528 sum() \u65b9\u6cd5\u5bf9 IntStream \u4e2d\u7684\u6240\u6709\u5143\u7d20\u6c42\u548c\u3002<\/li>\n<\/ul>\n<p><strong>\u6027\u80fd\u6bd4\u8f83\uff1a<\/strong><\/p>\n<p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0cfor \u5faa\u73af\u7684\u6027\u80fd\u6bd4 Stream API \u66f4\u4f18\uff0c\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u4e2d\u95f4\u521b\u5efa IntStream \u7684\u5f00\u9500\u3002<\/p>\n<p><strong>\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u8ba1\u7b97\u6570\u7ec4\u5143\u7d20\u548c\u7684 Java \u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<pre>int[] array = {1, 2, 3, 4, 5};\n\n\/\/ \u4f7f\u7528 for \u5faa\u73af\nint sum1 = 0;\nfor (int element : array) {\n    sum1 += element;\n}\n\n\/\/ \u4f7f\u7528 Stream API\nint sum2 = Arrays.stream(array).sum();\n\nSystem.out.println(\"\u4f7f\u7528 for \u5faa\u73af\u8ba1\u7b97\u7684\u548c\uff1a\" + sum1);\nSystem.out.println(\"\u4f7f\u7528 Stream API \u8ba1\u7b97\u7684\u548c\uff1a\" + sum2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u6c42\u6570\u7ec4\u7684\u548cjava\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8ba1\u7b97 java \u6570\u7ec4\u5143\u7d20\u548c\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u4f7f\u7528 for \u5faa\u73af\uff0c\u904d\u5386\u6570\u7ec4\u5e76\u7d2f\u52a0\u5143\u7d20\u3002\u4f7f\u7528 stream api\uff0c\u4f7f\u7528 arrays.stream(array).sum() \u6c42\u548c\u3002 \u5982\u4f55\u8ba1\u7b97\u6570\u7ec4\u5143\u7d20\u548c\uff08Java\uff09 \u65b9\u6cd5\uff1a \u5728 Java \u4e2d\uff0c\u6c42\u6570\u7ec4\u5143\u7d20\u548c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 for \u5faa\u73af \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int sum = 0; for (int element : array) { sum += element; } \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Stream API int sum = Arrays.stream(array).sum(); \u767b\u5f55\u540e\u590d\u5236 \u8be6\u7ec6\u8bf4\u660e\uff1a 1. \u4f7f\u7528 for \u5faa\u73af\uff1a \u521b\u5efa\u4e00\u4e2a int \u53d8\u91cf sum \u521d\u59cb\u5316\u4e3a 0\u3002 \u4f7f\u7528\u589e\u5f3a\u578b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-37802","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=37802"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37802\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}