{"id":445,"date":"2021-01-27T11:38:43","date_gmt":"2021-01-27T03:38:43","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=445"},"modified":"2021-02-16T14:34:40","modified_gmt":"2021-02-16T06:34:40","slug":"math-%e6%95%b0%e5%ad%a6%e5%b7%a5%e5%85%b7%e5%af%b9%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-445.html","title":{"rendered":"Math &#8212; \u6570\u5b66\u5de5\u5177\u7c7b"},"content":{"rendered":"\n<p>Math \u5bf9\u8c61\u5c01\u88c5\u4e86\u4e00\u4e9b\u6570\u5b66\u8fd0\u7b97\u76f8\u5173\u7684\u9759\u6001\u5c5e\u6027\uff0c\u548c\u9759\u6001\u65b9\u6cd5\u3002<\/p>\n\n\n\n<h5>1.\u9759\u6001\u5b57\u6bb5<\/h5>\n\n\n\n<p>1.&#8221;\u5706\u5468\u7387\u03a0&#8221; \u7684\u503c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>double PI = Math.PI; \/\/3.141592653589793<\/code><\/pre>\n\n\n\n<p>2.\u81ea\u7136\u5bf9\u6570\u7684\u5e95\u6570 e \u7684\u503c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>double E = Math.E;  \/\/2.718281828459045<\/code><\/pre>\n\n\n\n<h5>2.\u9759\u6001\u65b9\u6cd5<\/h5>\n\n\n\n<p>1.\u83b7\u53d6\u7edd\u5bf9\u503c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>double abs1 = Math.abs(-5);  \/\/5.0<\/code><\/pre>\n\n\n\n<p>2.\u53d6\u6574<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>double ceil = Math.ceil(5.5); \/\/ \u5411\u4e0a\u53d6\u6574 6.0 \ndouble floor = Math.floor(5.5);  \/\/\u5411\u4e0b\u53d6\u6574 5.0<\/code><\/pre>\n\n\n\n<p>3.\u56db\u820d\u4e94\u5165<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>long r1 = Math.round(3.4);   \/\/ 3\nlong r2 = Math.round(3.5);   \/\/ 4<\/code><\/pre>\n\n\n\n<p>4.\u53d6\u6700\u503c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int  max = Math.max(10, 20); \/\/20<\/code><\/pre>\n\n\n\n<p>5.\u53d6\u968f\u673a\u6570<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>double random = Math.random();  \/\/\u53d6\u503c\u8303\u56f4 &#91;0,1)<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Math \u5bf9\u8c61\u5c01\u88c5\u4e86\u4e00\u4e9b\u6570\u5b66\u8fd0\u7b97\u76f8\u5173\u7684\u9759\u6001\u5c5e\u6027\uff0c\u548c\u9759\u6001\u65b9\u6cd5\u3002 1.\u9759\u6001\u5b57\u6bb5 1.&#8221;\u5706\u5468\u7387\u03a0&#038;#82&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/java\/post-445.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">Math &#8212; \u6570\u5b66\u5de5\u5177\u7c7b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/445"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=445"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/445\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}