{"id":146,"date":"2021-07-07T10:41:58","date_gmt":"2021-07-07T02:41:58","guid":{"rendered":"https:\/\/aisumura.net\/blog\/?p=146"},"modified":"2021-07-07T10:43:23","modified_gmt":"2021-07-07T02:43:23","slug":"%e5%af%a6%e4%bd%9c%e9%81%9e%e8%bf%b47-xy-x-y%e7%9a%86%e6%95%b4%e6%95%b8","status":"publish","type":"post","link":"https:\/\/aisumura.net\/blog\/2021\/07\/07\/%e5%af%a6%e4%bd%9c%e9%81%9e%e8%bf%b47-xy-x-y%e7%9a%86%e6%95%b4%e6%95%b8\/","title":{"rendered":"\u5be6\u4f5c\u905e\u8ff4(7) &#8211; x^y (x, y\u7686\u6574\u6578)"},"content":{"rendered":"\n<p>x\u7684y\u6b21\u65b9\uff0c\u7576x, y\u90fd\u662f\u6574\u6578\u6642\u662f\u5f88\u57fa\u672c\u7684\u984c\u578b\u3002<\/p>\n\n\n\n<h4>\u689d\u4ef6\u6b78\u7d0d<\/h4>\n\n\n\n<div class=\"wp-block-katex-display-block katex-eq\" data-katex-display=\"true\"><pre>x^y = \n\\begin{cases}\n1, where\\ y = 0 \\\\\nx * x^{y-1},\\ where\\ y &gt; 0\\\\\n\\frac{1}{x} * x^{y+1},\\ where\\ y &lt;= 0\\\\\n\\end{cases}<\/pre><\/div>\n\n\n\n<h4>Golang<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"go\" class=\"language-go\">package main\n\nimport \"fmt\"\n\n\/\/\u905e\u8ff4\u7248\u672cx^y\nfunc pow(x, y float64) float64 {\n    if y == 0 {\n        return 1\n    } else if y &gt; 0 {\n        return x * pow(x, y-1)\n    } else {\n        return pow(x, y+1) \/ x\n    }\n}\n\nfunc main() {\n    fmt.Println(\"input x,y:\")\n    var x, y int\n    fmt.Scanf(\"%d,%d\", &amp;x, &amp;y)\n    fmt.Printf(\"pow(%d, %d) = %f\\n\", x, y, pow(float64(x), float64(y)))\n}<\/code><\/pre>\n\n\n\n<h4>\u6539\u5beb\u6210\u8fed\u4ee3\u7248\u672c<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"go\" class=\"language-go\">package main\n\nimport \"fmt\"\n\n\/\/\u8fed\u4ee3\u7248\u672cx^y\nfunc pow(x, y float64) float64 {\n    result := x\n    if y &gt; 0 {\n        for i := 1; i &lt; int(y); i++ {\n            result *= x\n        }\n    } else {\n        for i := 0; i &gt;= int(y); i-- {\n            result \/= x\n        }\n    }\n    return result\n}\n\nfunc main() {\n    fmt.Println(\"input x,y:\")\n    var x, y int\n    fmt.Scanf(\"%d,%d\", &amp;x, &amp;y)\n    fmt.Printf(\"pow(%d, %d) = %f\\n\", x, y, pow(float64(x), float64(y)))\n}\n\n<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>x\u7684y\u6b21\u65b9\uff0c\u7576x, y\u90fd\u662f\u6574\u6578\u6642\u662f\u5f88\u57fa\u672c\u7684\u984c\u578b\u3002 \u689d\u4ef6\u6b78\u7d0d Golang \u6539\u5beb\u6210\u8fed\u4ee3\u7248\u672c<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[6,8],"_links":{"self":[{"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/posts\/146"}],"collection":[{"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/comments?post=146"}],"version-history":[{"count":3,"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/posts\/146\/revisions"}],"predecessor-version":[{"id":286,"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/posts\/146\/revisions\/286"}],"wp:attachment":[{"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/media?parent=146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/categories?post=146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aisumura.net\/blog\/wp-json\/wp\/v2\/tags?post=146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}