{"id":894,"date":"2025-10-23T20:19:37","date_gmt":"2025-10-23T12:19:37","guid":{"rendered":"https:\/\/www.guanhaobo.cn\/?p=894"},"modified":"2025-10-23T20:19:37","modified_gmt":"2025-10-23T12:19:37","slug":"leetcode-56-%e5%90%88%e5%b9%b6%e5%8c%ba%e9%97%b4","status":"publish","type":"post","link":"https:\/\/www.guanhaobo.cn\/?p=894","title":{"rendered":"LeetCode 56 \u2013 \u5408\u5e76\u533a\u95f4"},"content":{"rendered":"

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

\u4ee5\u6570\u7ec4 intervals \u8868\u793a\u82e5\u5e72\u4e2a\u533a\u95f4\u7684\u96c6\u5408\uff0c\u5176\u4e2d\u5355\u4e2a\u533a\u95f4\u4e3a intervals[i] = [starti, endi] \u3002\u8bf7\u4f60\u5408\u5e76\u6240\u6709\u91cd\u53e0\u7684\u533a\u95f4\uff0c\u5e76\u8fd4\u56de \u4e00\u4e2a\u4e0d\u91cd\u53e0\u7684\u533a\u95f4\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u9700\u6070\u597d\u8986\u76d6\u8f93\u5165\u4e2d\u7684\u6240\u6709\u533a\u95f4 \u3002<\/p>\n

\u793a\u4f8b 1\uff1a<\/p>\n

\u8f93\u5165\uff1aintervals = [[1,3],[2,6],[8,10],[15,18]]
\n\u8f93\u51fa\uff1a[[1,6],[8,10],[15,18]]
\n\u89e3\u91ca\uff1a\u533a\u95f4 [1,3] \u548c [2,6] \u91cd\u53e0, \u5c06\u5b83\u4eec\u5408\u5e76\u4e3a [1,6].<\/p>\n

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

\u628a\u533a\u95f4\u6309\u8d77\u70b9\u4ece\u5c0f\u5230\u5927\u6392\u5e8f\u3002
\n\u4ece\u7b2c\u4e00\u4e2a\u5f00\u59cb\u5c1d\u8bd5\u5408\u5e76\uff0c\u5982\u679c\u540e\u9762\u7684\u533a\u95f4\u548c\u5f53\u524d\u533a\u95f4\u6709\u91cd\u53e0\uff0c\u5c31\u5408\u5e76\u3002
\n\u5426\u5219\u5c31\u5c06\u5f53\u524d\u533a\u95f4\u5165\u5e93\uff0c\u628a\u4e0b\u4e00\u4e2a\u533a\u95f4\u5f53\u4f5c\u8d77\u70b9\u7ee7\u7eed\u5c1d\u8bd5\u5408\u5e76\u3002
\n\u4e3b\u8981\u8017\u65f6\u5728\u6392\u5e8f\uff0c\u56e0\u6b64\u65f6\u95f4\u590d\u6742\u5ea6 O(n * log n)<\/p>\n

Java<\/h1>\n
public int[][] merge(int[][] intervals) {\n    Arrays.sort(intervals, new Comparator<int[]>() {\n        @Override\n        public int compare(int[] o1, int[] o2) {\n            return Integer.compare(o1[0], o2[0]);\n        }\n    });\n\n    int count = 0;\n    int[] cur = intervals[0];\n    for (int[] array : intervals) {\n        if (array[0] > cur[1]) {\n            intervals[count++] = cur;\n            cur = array;\n        } else if (array[1] > cur[1]) {\n            cur[1] = array[1];\n        }\n    }\n    intervals[count++] = cur;\n    return Arrays.copyOf(intervals, count);\n}\n<\/code><\/pre>\n
Kotlin<\/h1>\n
fun merge(intervals: Array<IntArray>): Array<IntArray> {\n    val ans = mutableListOf<IntArray>()\n    Arrays.sort(intervals, object : Comparator<IntArray> {\n        override fun compare(o1: IntArray, o2: IntArray): Int {\n            return o1[0].compareTo(o2[0])\n        }\n    })\n\n    var cur = intervals[0]\n    for (array in intervals) {\n        if (array[0] > cur[1]) {\n            \/\/ \u51fa\u73b0\u95f4\u9694\uff0c\u524d\u9762\u7684\u6570\u636e\u5165\u5e93\n            ans.add(cur)\n            cur = array\n        } else if (array[1] >= cur[1]) {\n            \/\/ \u9700\u8981\u5408\u5e76\n            cur[1] = array[1]\n        }\n    }\n    ans.add(cur)\n    return ans.toTypedArray()\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u63cf\u8ff0 \u4ee5\u6570\u7ec4 intervals \u8868\u793a\u82e5\u5e72\u4e2a\u533a\u95f4\u7684\u96c6\u5408\uff0c\u5176\u4e2d\u5355\u4e2a\u533a\u95f4\u4e3a intervals[i] = [s […]<\/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":[20,51,73],"class_list":["post-894","post","type-post","status-publish","format-standard","hentry","category-algo","tag-leetcode","tag-51","tag-73"],"_links":{"self":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/894","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=894"}],"version-history":[{"count":1,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/894\/revisions"}],"predecessor-version":[{"id":895,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/894\/revisions\/895"}],"wp:attachment":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}