{"id":35069,"date":"2024-11-26T17:44:21","date_gmt":"2024-11-26T09:44:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35069\/"},"modified":"2024-11-26T17:44:21","modified_gmt":"2024-11-26T09:44:21","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e8%bd%ac%e6%8d%a2%e6%88%90%e6%95%b4%e5%9e%8b%e6%95%b0%e7%bb%84%e4%b8%ad","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35069\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u8f6c\u6362\u6210\u6574\u578b\u6570\u7ec4\u4e2d"},"content":{"rendered":"<blockquote><p>\n  java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u578b\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u4e09\u79cd\uff1a\u4f7f\u7528arrays.stream()\u548cinteger.valueof()\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u4f7f\u7528scanner\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110309305758891.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u600e\u4e48\u8f6c\u6362\u6210\u6574\u578b\u6570\u7ec4\u4e2d\u63d2\u56fe\" alt=\"java\u4e2d\u600e\u4e48\u8f6c\u6362\u6210\u6574\u578b\u6570\u7ec4\u4e2d\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u578b\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.stream() \u548c Integer.valueOf()<\/strong><\/p>\n<pre>String str = \"1,2,3,4,5\";\n\nint[] arr = Arrays.stream(str.split(\",\"))\n               .map(Integer::valueOf)\n               .mapToInt(Integer::intValue)\n               .toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f<\/strong><\/p>\n<pre>String str = \"1,2,3,4,5\";\n\nPattern pattern = Pattern.compile(\"(\\d+)\");\nMatcher matcher = pattern.matcher(str);\nint[] arr = new int[matcher.groupCount()];\nint index = 0;\nwhile (matcher.find()) {\n    arr[index++] = Integer.parseInt(matcher.group());\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528 Scanner<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>String str = \"1,2,3,4,5\";\n\nScanner scanner = new Scanner(str).useDelimiter(\",\");\nint[] arr = new int[scanner.nextInt()];\nint index = 0;\nwhile (scanner.hasNextInt()) {\n    arr[index++] = scanner.nextInt();\n}\nscanner.close();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u8f6c\u6362\u6210\u6574\u578b\u6570\u7ec4\u4e2d\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>java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u578b\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u4e09\u79cd\uff1a\u4f7f\u7528arrays.stream()\u548cinteger.valueof()\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u4f7f\u7528scanner Java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u578b\u6570\u7ec4 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.stream() \u548c Integer.valueOf() String str = &#8220;1,2,3,4,5&#8221;; int[] arr = Arrays.stream(str.split(&#8220;,&#8221;)) .map(Integer::valueOf) .mapToInt(Integer::intValue) .toArray(); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f String str = &#8220;1,2,3,4,5&#8221;; Pattern pattern = Pattern.compile(&#8220;(\\d+)&#8221;); Matcher matcher = pattern.matcher(str); int[] arr = new int[matcher.groupCount()]; int index = 0; while (matcher.find()) { arr[index++] = Integer.parseInt(matcher.group()); } \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 3\uff1a\u4f7f\u7528 Scanner \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b String [&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-35069","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35069","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=35069"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35069\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35069"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35069"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35069"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}