{"id":992,"date":"2025-12-17T06:32:15","date_gmt":"2025-12-16T22:32:15","guid":{"rendered":"https:\/\/www.guanhaobo.cn\/?p=992"},"modified":"2025-12-17T06:32:15","modified_gmt":"2025-12-16T22:32:15","slug":"leetcode-153-%e5%af%bb%e6%89%be%e6%97%8b%e8%bd%ac%e6%8e%92%e5%ba%8f%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e6%9c%80%e5%b0%8f%e5%80%bc","status":"publish","type":"post","link":"https:\/\/www.guanhaobo.cn\/?p=992","title":{"rendered":"LeetCode 153 – \u5bfb\u627e\u65cb\u8f6c\u6392\u5e8f\u6570\u7ec4\u4e2d\u7684\u6700\u5c0f\u503c"},"content":{"rendered":"

\u9898\u76ee\u63cf\u8ff0<\/h1>\n

\u5df2\u77e5\u4e00\u4e2a\u957f\u5ea6\u4e3a n \u7684\u6570\u7ec4\uff0c\u9884\u5148\u6309\u7167\u5347\u5e8f\u6392\u5217\uff0c\u7ecf\u7531 1 \u5230 n \u6b21 \u65cb\u8f6c \u540e\uff0c\u5f97\u5230\u8f93\u5165\u6570\u7ec4\u3002\u4f8b\u5982\uff0c\u539f\u6570\u7ec4 nums = [0,1,2,4,5,6,7] \u5728\u53d8\u5316\u540e\u53ef\u80fd\u5f97\u5230\uff1a
\n\u82e5\u65cb\u8f6c 4 \u6b21\uff0c\u5219\u53ef\u4ee5\u5f97\u5230 [4,5,6,7,0,1,2]
\n\u82e5\u65cb\u8f6c 7 \u6b21\uff0c\u5219\u53ef\u4ee5\u5f97\u5230 [0,1,2,4,5,6,7]
\n\u6ce8\u610f\uff0c\u6570\u7ec4 [a[0], a[1], a[2], …, a[n-1]] \u65cb\u8f6c\u4e00\u6b21 \u7684\u7ed3\u679c\u4e3a\u6570\u7ec4 [a[n-1], a[0], a[1], a[2], …, a[n-2]] \u3002
\n\u7ed9\u4f60\u4e00\u4e2a\u5143\u7d20\u503c \u4e92\u4e0d\u76f8\u540c \u7684\u6570\u7ec4 nums \uff0c\u5b83\u539f\u6765\u662f\u4e00\u4e2a\u5347\u5e8f\u6392\u5217\u7684\u6570\u7ec4\uff0c\u5e76\u6309\u4e0a\u8ff0\u60c5\u5f62\u8fdb\u884c\u4e86\u591a\u6b21\u65cb\u8f6c\u3002\u8bf7\u4f60\u627e\u51fa\u5e76\u8fd4\u56de\u6570\u7ec4\u4e2d\u7684 \u6700\u5c0f\u5143\u7d20 \u3002
\n\u4f60\u5fc5\u987b\u8bbe\u8ba1\u4e00\u4e2a\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(log n) \u7684\u7b97\u6cd5\u89e3\u51b3\u6b64\u95ee\u9898\u3002<\/p>\n

\u793a\u4f8b\uff1a
\n\u8f93\u5165\uff1anums = [3,4,5,1,2]
\n\u8f93\u51fa\uff1a1<\/p>\n

\u9898\u76ee\u5206\u6790<\/h1>\n

\u4e8c\u5206\u67e5\u627e\uff0c\u5c06 mid \u7684\u503c\u548c\u7b2c\u4e00\u4e2a\u5143\u7d20 first \u6bd4\u8f83
\n– \u5982\u679c\u6bd4 first \u5927\uff0c\u8bf4\u660e\u4ece first \u5230 mid \u662f\u9012\u589e\u7684\uff0c\u6700\u5c0f\u503c\u5728\u53f3\u4fa7
\n– \u5982\u679c\u548c first \u76f8\u7b49\uff0c\u5373\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u53ea\u80fd\u5411\u53f3\u4fa7\u641c\u7d22\uff08\u6216\u5f53\u524d\u503c\u5c31\u662f\u6700\u5c0f\u503c\uff09
\n– \u5982\u679c\u6bd4 first \u5c0f\uff0c\u8bf4\u660e\u6700\u5c0f\u503c\u5728\u5de6\u4fa7\uff08\u6216\u5f53\u524d\u503c\u5c31\u662f\u6700\u5c0f\u503c\uff09<\/p>\n

Java<\/h1>\n
public int findMin(int[] nums) {\n    int left = 0, right = nums.length - 1;\n    int min = nums[0];\n    int first = nums[0];\n    while (left <= right) {\n        int mid = (left + right) \/ 2;\n        if (nums[mid] >= first) {\n            left = mid + 1;\n        } else  {\n            min = nums[mid];\n            right = mid - 1;\n        }\n    }\n    return min;\n}\n<\/code><\/pre>\n
Kotlin<\/h1>\n
fun findMin(nums: IntArray): Int {\n    var left = 0\n    var right = nums.size - 1\n    val first = nums.first()\n    var min = first\n    while (left <= right) {\n        val mid = (left + right) \/ 2\n        if (nums[mid] >= first) {\n            left = mid + 1\n        } else {\n            right = mid - 1\n            min = nums[mid]\n        }\n    }\n    return min\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u63cf\u8ff0 \u5df2\u77e5\u4e00\u4e2a\u957f\u5ea6\u4e3a n \u7684\u6570\u7ec4\uff0c\u9884\u5148\u6309\u7167\u5347\u5e8f\u6392\u5217\uff0c\u7ecf\u7531 1 \u5230 n \u6b21 \u65cb\u8f6c \u540e\uff0c\u5f97\u5230\u8f93\u5165\u6570\u7ec4\u3002\u4f8b\u5982\uff0c\u539f […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[20,32],"class_list":["post-992","post","type-post","status-publish","format-standard","hentry","category-algo","tag-leetcode","tag-32"],"_links":{"self":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=992"}],"version-history":[{"count":1,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/992\/revisions"}],"predecessor-version":[{"id":994,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/992\/revisions\/994"}],"wp:attachment":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}