\u57fa\u7840\u6570\u5b66\u8bfe3-\u8fed\u4ee3<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u8bf4\u4e0b\u4ece\u8fed\u4ee3\u5230\u4e8c\u5206<\/p>\n
\u9996\u5148\u662f\u8fed\u4ee3\uff0c\u672c\u8d28\u4e0a\u662f\u4e0d\u65ad\u7684\u4f7f\u7528\u65e7\u7684\u53d8\u91cf\u503c\u6765\u9012\u63a8\u65b0\u7684\u53d8\u91cf\u503c\u3002<\/p>\n
\u5c31\u597d\u6bd4<\/p>\n
x= 0<\/p>\n
for i in range(100000):<\/p>\n
x += i<\/p>\n
\u800c\u8fed\u4ee3\u6cd5\uff0c\u5728\u8ba1\u7b97\u673a\u9886\u57df\u5e38\u89c1\u5e94\u7528\u4e8e<\/p>\n
\u6c42\u53d6\u7cbe\u786e\u7684\u503c\u6216\u8005\u8fd1\u4f3c\u7684\u503c\uff0c<\/p>\n
\u5728\u4e00\u5b9a\u8303\u56f4\u5185\u786e\u8ba4\u76ee\u6807\u503c\uff0c<\/p>\n
\u673a\u5668\u5b66\u4e60\u4e2d\u7684\u8fed\u4ee3<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u770b\u4e0b\u5982\u4f55\u6c42\u53d6\u7cbe\u786e\u7684\u503c<\/p>\n
\u6c42\u53d6\u7cbe\u786e\u7684\u503c\uff0c\u8fd9\u4e2a\u95ee\u9898\u53ef\u4ee5\u4ee5\u6c42\u53d6\u4e00\u4e2a\u6b63\u6574\u6570\u7684\u5e73\u65b9\u6839\u4e3e\u4f8b<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u4ee5\u4e8c\u5206\u6cd5\u6765\u89e3\u51b3\u3002<\/p>\n
\u5982\u679c\u6211\u4eec\u8981\u6c42\u53d610\u7684\u5e73\u65b9\u6839\uff0c\u6211\u4eec\u53ef\u4ee5\u4e0d\u65ad\u7684\u4e8c\u5206\uff0c\u4ee5\u4e2d\u95f4\u6570\u5b57\u5224\u65ad\u662f\u5426\u7b26\u5408\u5e73\u65b9\u4e3a10<\/p>\n
\u5c31\u6bd4\u5982\u5148\u4ee5\uff081+10\uff09\/\/ 2 = 5.5\uff0c\u7136\u540e\u62ff5.5\u7684\u5224\u65ad\u5e73\u65b9\u662f\u5426\u4e3a10\uff0c\u53d1\u73b0\u5927\u4e8e10 \u4e4b\u540e<\/p>\n
\u4ee5\uff081+5.5\uff09\/\/ 2 = 3.25 \uff0c\u4ee53.25\u5224\u65ad\u5e73\u65b9\u662f\u5426\u4e3a10\uff0c\u4e0d\u65ad\u7684\u8fed\u4ee3\u4e0b\u53bb\uff0c\u76f4\u5230\u53d1\u73b0\u67d0\u4e2a\u6570\u7684\u5e73\u65b9\u4e3a10<\/p>\n
| public class Lesson3_2 {<\/p>\n \/**<\/p>\n * @Description: \u8ba1\u7b97\u5927\u4e8e1\u7684\u6b63\u6574\u6570\u4e4b\u5e73\u65b9\u6839<\/p>\n * @param n-\u5f85\u6c42\u7684\u6570, deltaThreshold-\u8bef\u5dee\u7684\u9608\u503c, maxTry-\u4e8c\u5206\u67e5\u627e\u7684\u6700\u5927\u6b21\u6570<\/p>\n * @return double-\u5e73\u65b9\u6839\u7684\u89e3<\/p>\n *\/<\/p>\n public static double getSqureRoot(int n, double deltaThreshold, int maxTry) {<\/p>\n if (n <= 1) {<\/p>\n return -1.0;<\/p>\n }<\/p>\n double min = 1.0, max = (double)n;<\/p>\n for (int i = 0; i < maxTry; i++) {<\/p>\n double middle = (min + max) \/ 2;<\/p>\n double square = middle * middle;<\/p>\n double delta = Math.abs((square \/ n) – 1);<\/p>\n if (delta <= deltaThreshold) {<\/p>\n return middle;<\/p>\n } else {<\/p>\n if (square > n) {<\/p>\n max = middle;<\/p>\n } else {<\/p>\n min = middle;<\/p>\n }<\/p>\n }<\/p>\n }<\/p>\n return -2.0;<\/p>\n }<\/p>\n }<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u6839\u636e\u8fd9\u4e2a\u4e8c\u5206\u6cd5\uff0c\u6211\u4eec\u8fdb\u884c\u4e86\u8ba1\u7b97\u673a\u4e2d\u8fed\u4ee3\u7684\u8bb2\u89e3\u3002<\/p>\n \u5176\u5b9e\u8fed\u4ee3\u662f\u8ba1\u7b97\u4e2d\u5f88\u5e38\u89c1\u7684\u601d\u60f3\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u8fed\u4ee3\uff0c\u4e0d\u65ad\u7684\u66f4\u65b0\u53d8\u91cf\u503c\u6216\u8005\u83b7\u53d6\u5230\u6700\u7ec8\u7684\u89e3\u51b3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u57fa\u7840\u6570\u5b66\u8bfe3-\u8fed\u4ee3 \u8fd9\u91cc\u6211\u4eec\u8bf4 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"_links":{"self":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/5335"}],"collection":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5335"}],"version-history":[{"count":1,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/5335\/revisions"}],"predecessor-version":[{"id":5336,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/5335\/revisions\/5336"}],"wp:attachment":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5335"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |