567. \u5b57\u7b26\u4e32\u7684\u6392\u5217<\/a><\/p>\n\n\n\n\u8fd9\u9898\u81ea\u5df1\u505a\u4e86\u4e00\u4e2a\u7248\u672c\uff0c\u6548\u7387\u592a\u4f4e\uff0c\u51fb\u8d255%\u3002\u3002\u3002\u3002\u6284\u4e86\u4e00\u4e2a\u5927\u795e\u7684\u7248\u672c \uff0c\u53ef\u4ee5\u7406\u89e3\u4e00\u4e0b\uff0c\u6ce8\u610f\u4e00\u53e5\u8bdd\uff0c\u6ed1\u52a8\u7a97\u53e3\u5de6\u53f3\u8fb9\u754c\u90fd\u4e0d\u9700\u8981\u4f1a\u9000\uff0c\u8fd9\u4e2a\u662f\u6ed1\u52a8\u7684\u5173\u952e\u3002\u4e5f\u5c31\u662f\u5bf9\u4e8e\u6ed1\u52a8\u7684\u4e32\u4e00\u6b21\u904d\u5386\u5c31\u884c\u3002<\/p>\n\n\n\n
\u5927\u795e\u7684\u601d\u8def\u662f\u8fd9\u6837\u7684\uff0c\u5148\u7edf\u8ba1\u5b50\u4e32\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u7684\u4e2a\u6570\uff0c\u7136\u540e\u6ed1\u52a8\uff0c\u6ed1\u52a8\u65f6\u5019\uff0c\u5982\u679c\u53f3\u4fa7\u5750\u6807\u7684\u5b57\u7b26\u5728\u5b50\u4e32\u4e2d\uff0c\u5c31\u4e2a\u6570-1\uff0c\u5411\u540e\u79fb\u52a8\u4e00\u4f4d\uff0c\u6307\u5bfc\u5230\u8fbe\u6240\u9700\u8981\u7684\u7a97\u53e3\u5927\u5c0f\uff08\u5b57\u4e32\u957f\u5ea6\uff09\uff0c\u5982\u679c\u8fd9\u65f6\u5019r==l+len1\uff0c\u5c31\u76f4\u63a5\u8fd4\u56de\uff0c\u5426\u5219\u5de6\u4fa7\u6ed1\u52a8\uff0c\u5de6\u4fa7\u51fa\u53bb\u4e86\uff0c\u4e2a\u6570+1\u3002<\/p>\n\n\n\n
\/**
<\/em> *
<\/em> 567. \u5b57\u7b26\u4e32\u7684\u6392\u5217
<\/em> \u7ed9\u4f60\u4e24\u4e2a\u5b57\u7b26\u4e32 s1 \u548c s2 \uff0c\u5199\u4e00\u4e2a\u51fd\u6570\u6765\u5224\u65ad s2 \u662f\u5426\u5305\u542b s1 \u7684\u6392\u5217\u3002\u5982\u679c\u662f\uff0c\u8fd4\u56de true \uff1b\u5426\u5219\uff0c\u8fd4\u56de false \u3002
<\/em>
<\/em> \u6362\u53e5\u8bdd\u8bf4\uff0cs1 \u7684\u6392\u5217\u4e4b\u4e00\u662f s2 \u7684 \u5b50\u4e32 \u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1as1 = \"ab\" s2 = \"eidbaooo\"
<\/em> \u8f93\u51fa\uff1atrue
<\/em> \u89e3\u91ca\uff1as2 \u5305\u542b s1 \u7684\u6392\u5217\u4e4b\u4e00 (\"ba\").
<\/em> \u793a\u4f8b 2\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1as1= \"ab\" s2 = \"eidboaoo\"
<\/em> \u8f93\u51fa\uff1afalse
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> 1 <= s1.length, s2.length <= 10^4
<\/em> s1 \u548c s2 \u4ec5\u5305\u542b\u5c0f\u5199\u5b57\u6bcd
<\/em>
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question567 {
\/\/ \u8fd9\u9898\u6ca1\u770b\u9898\u89e3\uff0c\u5229\u7528map\u5199\u51fa\u6765\u7684\uff0c\u4e0d\u8fc7\u6548\u7387\u4f4e\u4e0b\uff0c\u6548\u7387\u9ad8\u7684\u6ed1\u52a8\uff0c\u76f4\u63a5\u904d\u5386\u5c31\u5b8c\u4e8b\u4e86\u3002\u3002\u3002\u4ee5\u4e0b\u6ce8\u91ca\u90e8\u5206\u662f\u6284\u6765\u7684
\/**
<\/em>
<\/em> \u9898\u76ee\u6ca1\u6709\u6628\u5929\u7684\u9898\u90a3\u4e48\u8d39\u8111\u5b50\u3002\u6ed1\u52a8\u7a97\u53e3\uff0c\u53cc\u6307\u9488 left\u3001right\u4ea4\u66ff\u5411\u53f3\u6ed1\u52a8\u5373\u53ef\u3002
<\/em>
<\/em> \u5ba2\u89c2\u4e0a\u6765\u8bf4\uff0c\u6700\u7ec8\u7684\u7b54\u6848\u5982\u679c\u662ftrue\uff0c\u5219s2\u4e2d\u5fc5\u7136\u5b58\u5728\u67d0\u4e2a\u4f4d\u7f6e i \u4f7f\u5f97\u4ee5 i \u5f00\u59cb\u7684\u5b50\u4e32s2[i ... i+len1)\u662fs1\u7684\u6392\u5217\u3002
<\/em>
<\/em> \u4f9d\u6b21\u5c1d\u8bd5\u56fa\u5b9a\u4ee5s2\u4e2d\u7684\u6bcf\u4e00\u4e2a\u4f4d\u7f6e l \u4f5c\u4e3a\u5de6\u7aef\u70b9\u5f00\u59cb\u7684len1\u957f\u5ea6\u7684\u5b50\u4e32s2[l ... l+len1)\u662f\u5426\u662fs1\u7684\u6392\u5217\uff0c\u6700\u7ec8\u5fc5\u7136\u4e0d\u4f1a\u9519\u8fc7\u6240\u6709\u7684\u53ef\u80fd\u6027\u3002
<\/em>
<\/em> \u5982\u679c\u56fa\u5b9a l \u505a\u5de6\u7aef\u70b9\uff0c\u5c1d\u8bd5\u5931\u8d25\uff0c\u7ee7\u7eed\u5c1d\u8bd5 l+1 \u4f4d\u7f6e\uff0c\u3010\u5de6\u53f3\u8fb9\u754c\u90fd\u4e0d\u9700\u8981\u56de\u9000\u3011\uff0c\u8fd9\u662f\u6ed1\u52a8\u7a97\u53e3\u7684\u524d\u63d0\u3002
<\/em>
<\/em> \u901a\u8fc7\u4e00\u4e2a\u8bb0\u8d26\u672c charCount \u505a\u4e3a\u3010\u603b\u8d26\u8868\u3011\u7ef4\u62a4s1\u7684\u8bcd\u9891\u8868\uff1b
<\/em> \u6ed1\u52a8\u7a97\u53e3\u5185\u6bcf\u4e00\u4e2a\u53f3\u8fb9\u754c\u5b57\u7b26\u8fdb\u5165\u7a97\u53e3\u540e\uff0c\u3010\u8fd8\u8d26\u3011\uff1acharCount[str2[r] - 'a']--
<\/em> \u5982\u679c\u67d0\u4e2a\u5b57\u7b26\u591a\u8fd8\u4e86\uff08\u53d8\u6210\u8d1f\u503c\uff09\uff0c\u5373\u5c1d\u8bd5\u5931\u8d25\uff0c\u5f00\u59cb\u5c1d\u8bd5\u4e0b\u4e00\u4e2a\u5de6\u7aef\u70b9\uff08l++\uff09;
<\/em> \u5de6\u8fb9\u754c\u5b57\u7b26\u51fa\u7a97\u53e3\u540e\uff0c\u8868\u793a\u3010\u91cd\u65b0\u8d4a\u8d26\u3011\uff1acharCount[str2[l] - 'a']++
<\/em> \u6700\u7ec8\u5982\u679c\u6b20\u8d26\u8fd8\u8db3\u4e86\uff08\u7a97\u53e3\u957f\u5ea6\u8fbe\u5230len1\uff09\uff0c\u5219\u5c1d\u8bd5\u6210\u529f\uff0c\u76f4\u63a5\u8fd4\u56detrue\u3002
<\/em>
<\/em> public static boolean checkInclusion(String s1, String s2) {
<\/em> char[] str1 = s1.toCharArray();
<\/em> char[] str2 = s2.toCharArray();
<\/em> int len1 = s1.length();
<\/em> int len2 = s2.length();
<\/em> int[] charCount = new int[26]; \/\/ \u3010\u603b\u6b20\u8d26\u8868\u3011\uff1as1\u7684\u8bcd\u9891\u8868
<\/em> for (char c : str1) { \/\/ \u7edf\u8ba1s1\u7684\u8bcd\u9891
<\/em> charCount[c - 'a']++;
<\/em> }
<\/em> int l = 0, r = 0; \/\/ \u6ed1\u52a8\u7a97\u53e3\u5de6\u53f3\u8fb9\u754c
<\/em> \/\/ \u4f9d\u6b21\u5c1d\u8bd5\u56fa\u5b9a\u4ee5s2\u4e2d\u7684\u6bcf\u4e00\u4e2a\u4f4d\u7f6el\u4f5c\u4e3a\u5de6\u7aef\u70b9\u5f00\u59cb\u7684len1\u957f\u5ea6\u7684\u5b50\u4e32s2[l ... l+len1)\u662f\u5426\u662fs1\u7684\u6392\u5217
<\/em> while (l <= len2 - len1) { \/\/ \u56fa\u5b9a\u5de6\u7aef\u70b9\u53ea\u9700\u8981\u5c1d\u8bd5\u5230len2-len1\u5373\u53ef
<\/em> \/\/ \u53f3\u8fb9\u754cs2[r]\u5b57\u7b26\u8fdb\u5165\u7a97\u53e3\u3010\u8fd8\u8d26\u3011
<\/em> while (r < l + len1 && charCount[str2[r] - 'a'] >= 1) {
<\/em> charCount[str2[r] - 'a']--; \/\/ \u3010\"\u8fd8\u8d26\"\u3011
<\/em> r++;
<\/em> }
<\/em> if (r == l + len1) return true;
<\/em> \/\/ \u5de6\u8fb9\u754cs2[l]\u5b57\u7b26\u51fa\u7a97\u53e3\u3010\u8d4a\u8d26\u3011\uff0cl++\uff0c\u5f00\u59cb\u5c1d\u8bd5\u56fa\u5b9a\u4e0b\u4e00\u4e2a\u4f4d\u7f6e\u505a\u5de6\u7aef\u70b9
<\/em> charCount[str2[l] - 'a']++; \/\/ \u91cd\u65b0\u3010\"\u8d4a\u8d26\"\u3011
<\/em> l++;
<\/em> }
<\/em> return false; \/\/ \u6240\u6709\u7684\u5de6\u7aef\u70b9\u5747\u5c1d\u8bd5\u8fd8\u8d26\u5931\u8d25\uff0c\u4e0d\u53ef\u80fd\u518d\u6709\u7b54\u6848\u4e86
<\/em> }
<\/em>
<\/em> *\/
<\/em> <\/em>public boolean checkInclusion(String s1, String s2) {
int len1 = s1.length();
int len2 = s2.length();
int diff = len2 - len1;
boolean result = false;
for(int i = 0; i<=diff; i++){
String src = s2.substring(i, i+len1);
if(check(s1, src)){
return true;
}
}
return false;
}
private boolean check(String s1, String src) {
int len = s1.length();
HashMap<Character, Integer> charMap = new HashMap();
for(int i = 0; i<len; i++){
char c1 = s1.charAt(i);
char c2 = src.charAt(i);
if(charMap.containsKey(c1)){
charMap.put(c1, charMap.get(c1) + 1);
}else {
charMap.put(c1, 1);
}
if(charMap.containsKey(c2)){
charMap.put(c2, charMap.get(c2) - 1);
}else {
charMap.put(c2, -1);
}
}
Long collect = charMap.values().stream().filter(integer -> integer != 0).collect(Collectors.counting<\/em>());
return collect == 0;
}
public static void main(String[] args) {
\/\/ System.out.println(checkInclusion(\"adc\", \"dcda\"));
}
}<\/pre>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6ed1\u52a8\u7a97\u53e3 3. \u65e0\u91cd\u590d\u5b57\u7b26\u7684\u6700\u957f\u5b50\u4e32 \/** *\u7ed9\u5b9a\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u627e\u51fa\u4e0d\u542b\u6709\u91cd\u590d\u5b57\u7b26\u7684\u6700\u957f\u5b50\u4e32\u7684\u957f\u5ea6\u3002\u793a\u4f8b 1: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155],"tags":[166],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2511"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2511"}],"version-history":[{"count":11,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2511\/revisions"}],"predecessor-version":[{"id":2522,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2511\/revisions\/2522"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}