\u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32 s \u3001\u4e00\u4e2a\u5b57\u7b26\u4e32 t \u3002\u8fd4\u56de s \u4e2d\u6db5\u76d6 t \u6240\u6709\u5b57\u7b26\u7684\u6700\u5c0f\u5b50\u4e32\u3002\u5982\u679c s \u4e2d\u4e0d\u5b58\u5728\u6db5\u76d6 t \u6240\u6709\u5b57\u7b26\u7684\u5b50\u4e32\uff0c\u5219\u8fd4\u56de\u7a7a\u5b57\u7b26\u4e32 “” \u3002<\/p>\n
\u6ce8\u610f\uff1a<\/p>\n
\u5bf9\u4e8e t \u4e2d\u91cd\u590d\u5b57\u7b26\uff0c\u6211\u4eec\u5bfb\u627e\u7684\u5b50\u5b57\u7b26\u4e32\u4e2d\u8be5\u5b57\u7b26\u6570\u91cf\u5fc5\u987b\u4e0d\u5c11\u4e8e t \u4e2d\u8be5\u5b57\u7b26\u6570\u91cf\u3002
\n\u5982\u679c s \u4e2d\u5b58\u5728\u8fd9\u6837\u7684\u5b50\u4e32\uff0c\u6211\u4eec\u4fdd\u8bc1\u5b83\u662f\u552f\u4e00\u7684\u7b54\u6848\u3002<\/p>\n
\u793a\u4f8b 1\uff1a<\/p>\n
\u8f93\u5165\uff1as = “ADOBECODEBANC”, t = “ABC”
\n\u8f93\u51fa\uff1a”BANC”
\n\u89e3\u91ca\uff1a\u6700\u5c0f\u8986\u76d6\u5b50\u4e32 “BANC” \u5305\u542b\u6765\u81ea\u5b57\u7b26\u4e32 t \u7684 ‘A’\u3001’B’ \u548c ‘C’\u3002<\/p>\n
\u53cc\u6307\u9488\uff0c\u6ed1\u52a8\u7a97\u53e3
\n\u4f7f\u7528\u4e00\u4e2a\u6570\u7ec4\u8868\u793a\u7a97\u53e3\u76f8\u5bf9\u4e8e t \u5404\u5b57\u7b26\u7684\u4e2a\u6570\uff0c\u7f3a\u5c11\u4e3a\u8d1f\u6570\uff0c\u591a\u4f59\u4e3a\u6b63\u6570
\n\u5982\u4f55\u5224\u65ad\u7a97\u53e3\u5185\u662f\u5426\u5df2\u7ecf\u5305\u542b t \u6240\u6709\u5b57\u7b26\uff1f\u6ca1\u5fc5\u8981\u6bcf\u6b21\u90fd\u904d\u5386\u68c0\u67e5\u6570\u7ec4\u662f\u5426\u5168\u4e3a0
\n\u8bbe\u7f6e\u4e00\u4e2a\u8ba1\u6570\u5668 count \u5373\u53ef\uff0c\u8868\u793a\u5269\u4f59\u9700\u8981\u5339\u914d\u7684\u5b57\u7b26\uff0c\u521d\u59cb\u503c\u4e3a t.length
\n\u5f53\u7a97\u53e3\u4e2d\u589e\u52a0\u6216\u5220\u9664\u5b57\u7b26\u65f6\uff0c\u901a\u8fc7\u6570\u7ec4\u662f\u5426\u4e3a\u8d1f\u6570\uff0c\u53ef\u4ee5\u5224\u65ad\u8fd9\u4e2a\u5b57\u7b26\u662f\u4e0d\u662f\u5fc5\u8981\u7684\uff0c\u4ece\u800c\u7ef4\u62a4 count\u3002
\n– count > 0 \u65f6\uff0c\u8bf4\u660e\u5f53\u524d\u7a97\u53e3\u8fd8\u4e0d\u591f\uff0c\u5c06\u7a97\u53e3\u5411\u53f3\u6269\u5c55\u4e00\u4f4d
\n– count <= 0 \u65f6\uff0c\u8bf4\u660e\u7a97\u53e3\u5df2\u7ecf\u8db3\u591f\u5927\u4e86\uff0c\u5c06\u7a97\u53e3\u5de6\u8fb9\u7f29\u5c0f\u4e00\u4f4d<\/p>\n
\u65f6\u95f4\u590d\u6742\u5ea6 \u9898\u76ee\u63cf\u8ff0 \u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32 s \u3001\u4e00\u4e2a\u5b57\u7b26\u4e32 t \u3002\u8fd4\u56de s \u4e2d\u6db5\u76d6 t \u6240\u6709\u5b57\u7b26\u7684\u6700\u5c0f\u5b50\u4e32\u3002\u5982\u679c s \u4e2d\u4e0d\u5b58\u5728 […]<\/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":[20,75,45,77],"class_list":["post-886","post","type-post","status-publish","format-standard","hentry","category-algo","tag-leetcode","tag-75","tag-45","tag-77"],"_links":{"self":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/886","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=886"}],"version-history":[{"count":4,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/886\/revisions"}],"predecessor-version":[{"id":892,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/886\/revisions\/892"}],"wp:attachment":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}O(m + n)<\/code><\/p>\nJava<\/h1>\n
public String minWindow(String s, String t) {\n int left = 0, right = -1;\n int ansL = -1, ansR = -1;\n int[] num = new int['z' - 'A' + 1];\n int count = t.length();\n for (int i = 0; i < t.length(); i++) {\n num[t.charAt(i) - 'A']--;\n }\n\n while (right < s.length()) {\n if (count > 0) {\n right++;\n if (right < s.length()) {\n if (num[s.charAt(right) - 'A'] < 0) {\n count--;\n }\n num[s.charAt(right) - 'A']++;\n }\n } else {\n if (right - left < ansR - ansL || ansL == -1) {\n ansL = left;\n ansR = right;\n }\n num[s.charAt(left) - 'A']--;\n if (num[s.charAt(left) - 'A'] < 0) {\n count++;\n }\n left++;\n }\n }\n if (ansL == -1) {\n return \"\";\n } else {\n return s.substring(ansL, ansR + 1);\n }\n}\n<\/code><\/pre>\nKotlin<\/h1>\n
fun minWindow(s: String, t: String): String {\n val size = 'z' - 'A' + 1\n val num = IntArray(size)\n for (ch in t) {\n num[ch - 'A']--\n }\n \/\/ \u524d\u95ed\u540e\u95ed\n var left = 0\n var right = -1\n var start = -1\n var end = -1\n val length = s.length\n var count = t.length \/\/ \u8868\u793a\u5269\u4f59\u9700\u8981\u5339\u914d\u7684\u5b57\u7b26\n while (right < length) {\n if (count > 0) {\n \/\/ \u589e\u52a0\u53f3\u8fb9\u7684\n right++\n if (right < length) {\n if (num[s[right] - 'A'] < 0) {\n count--\n }\n num[s[right] - 'A']++\n }\n } else {\n if (right - left < end - start || start < 0) {\n start = left\n end = right\n }\n\n \/\/ \u5220\u9664\u5de6\u8fb9\u7684\n num[s[left] - 'A']--\n if (num[s[left] - 'A'] < 0) {\n count++\n }\n left++\n }\n }\n return if (start == -1) \"\" else s.substring(start, end + 1)\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"