{"id":17783,"date":"2025-04-19T00:18:37","date_gmt":"2025-04-18T16:18:37","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/17783.html"},"modified":"2025-04-19T00:18:37","modified_gmt":"2025-04-18T16:18:37","slug":"%e3%80%90c%e3%80%91%e7%ac%ac%e5%8d%81%e8%8a%82-string%e7%b1%bb%e5%ae%8c%e7%bb%93%e7%af%87-%e8%af%a6%e8%a7%a3%e4%bb%a3%e7%a0%81%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/17783.html","title":{"rendered":"\u3010C++\u3011\u7b2c\u5341\u8282\u2014string\u7c7b(\u5b8c\u7ed3\u7bc7)\u2014\u2014\u8be6\u89e3+\u4ee3\u7801\u793a\u4f8b"},"content":{"rendered":"

hello ，\u597d\u4e45\u4e0d\u89c1！<\/span><\/p>\n

\u4e91\u8fb9\u6709\u4e2a\u7a3b\u8349\u4eba-\u4e2a\u4eba\u4e3b\u9875<\/p>\n

C++\u4f18\u8d28\u4e13\u680f！~\u6b22\u8fce\u8ba2\u9605~<\/p>\n<\/p>\n

\u76ee\u5f55<\/p>\n

\u4e00\u3001string\u5b9e\u73b0\u65f6\u8981\u6ce8\u610f\u7684\u7ec6\u8282\u70b9<\/p>\n

1.void string::Insert(size_t pos, char ch)<\/p>\n

2.void string::Insert(size_t pos, const char* str)<\/p>\n

\u7b2c\u4e00\u79cd\u65b9\u6cd5<\/p>\n

\u7b2c\u4e8c\u79cd\u65b9\u6cd5<\/p>\n

3.\u5230\u5e95\u5728\u54ea\u91cc\u5b9a\u4e49static const size_t npos ？<\/p>\n

4.\u5b9e\u73b0\u53d6\u57df\u540d<\/p>\n

5.\u62f7\u8d1d\u2014\u62f7\u8d1d\u6784\u9020\u548c\u8d4b\u503c<\/p>\n

6.\u6d41\u63d2\u5165<\/p>\n

7.\u4e09\u4e2aswap<\/p>\n

\u4e8c\u3001<\/p>\n

2.1 \u7ecf\u5178\u7684string\u7c7b\u95ee\u9898<\/p>\n

2.2 \u6d45\u62f7\u8d1d<\/p>\n

2.3 \u6df1\u62f7\u8d1d<\/p>\n

（1）\u3010\u4f20\u7edf\u7248\u5199\u6cd5\u7684String\u7c7b\u3011<\/p>\n

（2）\u3010\u73b0\u4ee3\u7248\u5199\u6cd5\u7684String\u7c7b\u3011<\/p>\n

（3）\u3010\u5199\u65f6\u62f7\u8d1d\u3011（\u4e86\u89e3）<\/p>\n

（4）\u6269\u5c55\u9605\u8bfb<\/p>\n

（5）\u7f16\u7801<\/p>\n

\u4e09\u3001\u7efc\u5408\u4ee3\u7801<\/p>\n

string.h<\/p>\n

string.cpp<\/p>\n

test.cpp<\/p>\n

\n

\u6b63\u6587\u5f00\u59cb\u2014\u2014<\/p>\n<\/p>\n

\u4e00\u3001string\u5b9e\u73b0\u65f6\u8981\u6ce8\u610f\u7684\u7ec6\u8282\u70b9<\/span><\/h3>\n

1.void string::Insert(size_t pos, char ch)<\/h4>\n

\"\"<\/p>\n

void string::Insert(size_t pos, char ch)
\n{
\n\/\/\u5bf9\u4e8e\u4efb\u4f55\u7684\u63d2\u5165\u64cd\u4f5c\u90fd\u8981\u5148\u5224\u65ad\u7a7a\u95f4\u662f\u5426\u5145\u8db3\u63d0\u524d\u9884\u7559\u8db3\u591f\u7684\u7a7a\u95f4
\nif (_size == _capacity)
\n{
\nreserve(_capacity == 0 ? 4 : 2 * _capacity);
\n}
\nsize_t end = _size+1;
\n\/\/\u9884\u7559\u51fapos\u4f4d\u7f6e\u7684\u7a7a\u95f4\u8fdb\u884c\u63d2\u5165\u64cd\u4f5c
\nwhile (end > pos)
\n{
\n_str[end] = _str[end – 1];
\n–end;
\n}
\n_str[pos] = ch;
\n_size++;
\n} <\/p>\n

2.void string::Insert(size_t pos, const char* str)<\/h4>\n

\u7b2c\u4e00\u79cd\u65b9\u6cd5<\/h5>\n

\u8ddf\u6211\u4eec\u524d\u9762\u8bb2\u7684\u5f88\u76f8\u4f3c，\u5229\u7528\u5f3a\u8f6c\u6765\u89e3\u51b3\u7c7b\u578b\u7684\u95ee\u9898<\/p>\n

void string::Insert(size_t pos, const char* str)
\n{
\n\/\/\u8fd8\u662f\u5148\u6269\u5bb9
\nsize_t len = strlen(str);
\nif (_size + len > _capacity)
\n{
\n\/\/\u6269\u5bb9
\nsize_t newCapacity = 2 * _capacity;
\n\/\/\u62692\u500d\u4e0d\u591f\u76f4\u63a5\u9700\u8981\u591a\u5c11\u6269\u591a\u5c11
\nif (newCapacity < _size + len)
\nnewCapacity = _size + len;
\nreserve(newCapacity);
\n}<\/p>\n

int end = _size;
\nwhile (end >= (int)pos)
\n{
\n_str[end + len] = _str[end];
\nend–;
\n}<\/p>\n

\/\/\u5c06str\u8fdb\u884c\u6328\u4e2a\u63d2\u5165
\nfor (size_t i = 0; i < len; i++)
\n{
\n_str[pos + i] = str[i];
\n}
\n_size += len;
\n} <\/p>\n

\u7b2c\u4e8c\u79cd\u65b9\u6cd5<\/h5>\n

\u662f\u5c06end-len\u79fb\u5230end\u6307\u5411\u7684\u6570\u636e<\/p>\n

\"\"<\/p>\n

void string::Insert(size_t pos, const char* str)
\n{
\n\/\/\u8fd8\u662f\u5148\u6269\u5bb9
\nsize_t len = strlen(str);
\nif (_size + len > _capacity)
\n{
\n\/\/\u6269\u5bb9
\nsize_t newCapacity = 2 * _capacity;
\n\/\/\u62692\u500d\u4e0d\u591f\u76f4\u63a5\u9700\u8981\u591a\u5c11\u6269\u591a\u5c11
\nif (newCapacity < _size + len)
\nnewCapacity = _size + len;
\nreserve(newCapacity);
\n}<\/p>\n

size_t end = _size + len;
\nwhile (end >= pos+len) \/\/end-len==pos，end==pos+len，
\n{
\n_str[end] = _str[end-len];
\nend–;
\n}<\/p>\n

\/\/\u5c06str\u8fdb\u884c\u6328\u4e2a\u63d2\u5165
\nfor (size_t i = 0; i < len; i++)
\n{
\n_str[pos + i] = str[i];
\n}
\n_size += len;
\n} <\/p>\n

3.\u5230\u5e95\u5728\u54ea\u91cc\u5b9a\u4e49static const size_t npos ？<\/h4>\n

（1）\u6240\u6709\u7684.c\u6216\u8005.cpp\u6587\u4ef6\u5728\u7f16\u8bd1\u94fe\u63a5\u7684\u65f6\u5019\u90fd\u4f1a\u751f\u6210.o\u6587\u4ef6（VS\u4e0b\u53eb.obj\u6587\u4ef6），.h\u6587\u4ef6\u5728\u9884\u5904\u7406\u7684\u65f6\u5019\u5c31\u5728\u4e24\u4e2a.cpp\u6587\u4ef6\u91cc\u9762\u5c55\u5f00\u4e86，\u6211\u4eec\u5728\u7c7b\u57df\u5916\u9762\u5b9a\u4e49\u7684npos\u5c31\u4f1a\u5728\u4e24\u4e2a.cpp\u91cc\u9762\u5c55\u5f00，\u5f53\u4e24\u4e2a.cpp\u6587\u4ef6\u94fe\u63a5\u5408\u5e76\u751f\u6210\u53ef\u6267\u884c\u7a0b\u5e8f\u7684\u65f6\u5019，\u5c31\u6784\u6210\u4e86\u4e0b\u9762\u62a5\u9519\u91cc\u9762\u7684\u91cd\u5b9a\u4e49，\u6240\u4ee5\u5f53\u9759\u6001\u6210\u5458\u53d8\u91cf\u5b9a\u4e49\u548c\u58f0\u660e\u5206\u79bb\u7684\u65f6\u5019\u8981\u5728.cpp\u6587\u4ef6\u91cc\u9762\u5b9a\u4e49，\u4e0d\u80fd\u50cf\u4ee5\u524d\u90a3\u6837\u5728\u7c7b\u91cc\u9762\u58f0\u660e\u5728\u7c7b\u5916\u9762\u5b9a\u4e49\u3002\u5bf9\u4e8enpos\u8981\u52a0\u4e0aconst，\u4e0d\u53ef\u4fee\u6539\u3002（2）\u540c\u65f6npos\u8981\u5728\u5b9a\u4e49\u7684\u65f6\u5019\u7ed9\u503c，\u5bf9\u4e8econst\u5bf9\u8c61\u662f\u53ea\u6709\u5b9a\u4e49\u65f6\u4e00\u6b21\u521d\u59cb\u5316\u7684\u673a\u4f1a\u3002（3）\u7279\u6b8a\u7684\u4e00\u70b9<\/span>，\u5bf9\u4e8e\u9759\u6001\u7684const（\u53ea\u6709\u6574\u578b\u7c7b\u578b\u7684\u6570\u636e\u624d\u53ef\u4ee5\u7684，\u8fd9\u7b97\u662f\u4e00\u4e2a\u7279\u6b8a\u5904\u7406）\u6210\u5458\u53d8\u91cf\u53ef\u4ee5\u5728\u58f0\u660e\u7684\u65f6\u5019\u7ed9\u7f3a\u7701\u503c，\u90a3\u4e48\u5728\u5b9a\u4e49\u7684\u65f6\u5019\u5c31\u4e0d\u53ef\u4ee5\u518d\u7ed9\u503c\u4e86\u3002<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u603b\u7ed3\u4e00\u4e0b，\u5bf9\u4e8e\u8fd9\u79cd\u60c5\u51b5\u6709\u4e24\u79cd\u89e3\u51b3\u529e\u6cd5<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

4.\u5b9e\u73b0\u53d6\u57df\u540d<\/h4>\n

\"\"<\/p>\n

\/\/\u53d6\u57df\u540d
\nvoid test_string4()
\n{
\nlrq::string s1 = "https:\/\/mpbeta.csdn.net\/mp_blog\/creation\/editor\/147116669?spm=1000.2115.3001.4503";
\nsize_t pos1 = s1.find(':');
\nsize_t pos2 = s1.find('\/', pos1 + 3);<\/p>\n

\/\/\u5224\u65ad\u662f\u5426\u627e\u5230\u76ee\u6807\u5b57\u7b26
\nif (pos1 != string::npos && pos2 != string::npos)\/\/npos\u53d7\u7c7b\u57df\u5f71\u54cd
\n{
\nlrq::string domain = s1.substr(pos1 + 3, pos2 – (pos1 + 3));\/\/\u6ce8\u610fpos1\u548cpos2\u5230\u5e95\u6307\u5411\u54ea\u4e9b\u4e2a\u4f4d\u7f6e
\ncout << domain.c_str() << endl;
\n}
\n} <\/p>\n

5.\u62f7\u8d1d\u2014\u62f7\u8d1d\u6784\u9020\u548c\u8d4b\u503c<\/h4>\n

\"\"<\/p>\n

\u6211\u4eec\u4e0d\u663e\u793a\u5199\u62f7\u8d1d\u6784\u9020\u548c\u8d4b\u503c\u62f7\u8d1d（\u90fd\u662f\u4e00\u79cd\u8d4b\u503c\u884c\u4e3a），\u7f16\u8bd1\u5668\u9ed8\u8ba4\u90fd\u4f1a\u8fdb\u884c\u6d45\u62f7\u8d1d\u3002（1）\u50cf\u4e0a\u9762\u7684\u4ee3\u7801\u5c06s1\u62f7\u8d1d\u8d4b\u503c\u7ed9s2，\u7f16\u8bd1\u5668\u9ed8\u8ba4\u7684\u6d45\u62f7\u8d1d\u4f1a\u5bfc\u81f4s2\u548cs1\u6307\u5411\u540c\u4e00\u5757\u7a7a\u95f4，\u51fd\u6570\u7ed3\u675f\u7684\u65f6\u5019\u4f1a\u5148\u6790\u6784s2\u518d\u6790\u6784s1\u5bfc\u81f4\u540c\u4e00\u5757\u7a7a\u95f4\u6790\u6784\u4e24\u6b21\u5c31\u4f1a\u51fa\u73b0\u4e0a\u9762\u7684\u8fd0\u884c\u5d29\u6e83；（2）\u8fd8\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f，s2\u4e4b\u524d\u7684\u7a7a\u95f4\u6ca1\u6709\u5f97\u5230\u91ca\u653e\u3002（\u5982\u679c\u4e00\u4e2a\u7c7b\u9700\u8981\u663e\u793a\u5199\u6790\u6784，\u90a3\u4e48\u4e00\u822c\u5c31\u9700\u8981\u5199\u62f7\u8d1d\u6784\u9020\u548c\u8d4b\u503c）<\/p>\n

\"\"<\/p>\n

\/\/s1 = s3
\nstring& string::operator=(const string& s)
\n{
\nif (this != &s)
\n{
\n\/\/\u4e0a\u6765\u5148\u5c06s1\u7ed9\u91ca\u653e\u6389
\ndelete[] _str;
\n_str = new char[s._capacity + 1];\/\/\u9884\u7559\u4e00\u4e2a\\\\0\u7684\u7a7a\u95f4
\nstrcpy(_str, s._str);
\n_size = s._size;
\n_capacity = s._capacity;
\n}
\nreturn *this;
\n} <\/p>\n

6.\u6d41\u63d2\u5165<\/h4>\n

\u6211\u4eec\u8f93\u5165\u7684\u662fabcd efg，\u4e2d\u95f4\u5305\u542b\u4e00\u4e2a\u7a7a\u683c\u5b57\u7b26，\u4f46\u662fch\u597d\u50cf\u5e76\u6ca1\u6709\u4ece\u7f13\u51b2\u533a\u91cc\u9762\u63d0\u53d6\u5230\u7a7a\u683c，\u770b\u4e0b\u56fe，\u8bb0\u4f4f，cin\u5728\u76f4\u63a5\u4f7f\u7528\u6d41\u63d0\u53d6\u7684\u65f6\u5019\u65e0\u8bba\u8f93\u5165\u4efb\u4f55\u7c7b\u578b，int，char，\u5b83\u90fd\u4f1a\u9ed8\u8ba4\u5ffd\u7565\u6389\u7a7a\u683c\u548c\u6362\u884c，\u89c4\u5b9a\u8ba4\u4e3a\u7a7a\u683c\u548c\u6362\u884c\u90fd\u662f\u591a\u4e2a\u503c\u4e4b\u95f4\u7684\u5206\u5272，\u4e5f\u5c31\u65e0\u6cd5\u5224\u65ad\u4ec0\u4e48\u65f6\u5019\u7ed3\u675f，\u6240\u4ee5\u6211\u4eec\u8981\u8fdb\u884c\u4ee3\u7801\u7684\u4fee\u6539\u3002<\/p>\n

\"\"<\/p>\n

\u6211\u4eec\u4f7f\u7528istream\u7c7b\u91cc\u9762\u7684get，\u53ef\u4ee5\u63d0\u53d6\u5230\u7a7a\u683c\u548c\u6362\u884c<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\/\/cin>>str,\u8fd9\u4e2a\u5b9e\u73b0\u7684\u529f\u80fd\u548c\u524d\u9762\u8bb2\u7684getline\u5f88\u50cf，\u53ea\u4e0d\u8fc7\u7ed3\u675f\u5b57\u7b26\u4e0d\u540c\u800c\u5df2，\u6211\u4eec\u8981\u878d\u4f1a\u8d2f\u901a\u4e00\u4e0b
\nistream& operator>>(istream& is, string& str)
\n{
\nstr.clear();\/\/\u6e05\u7a7astr\u91cc\u9762\u539f\u6765\u7684\u5b57\u7b26，\u5426\u5219\u4f1a\u7ee7\u7eed\u52a0\u5728str\u4e0a\u9762，\u8fd9\u662f\u5b9e\u73b0\u548cSTL\u91cc\u9762\u7684string::>>\u4e00\u6837\u7684\u6548\u679c<\/p>\n

char ch;
\nch = is.get();
\nwhile (ch != ' ' && ch != '\\\\n')
\n{
\nstr += ch;
\nch = is.get();
\n}<\/p>\n

return is;
\n} <\/p>\n

\u4f18\u5316\u4e00\u4e0b：\u00a0<\/p>\n

istream& operator>>(istream& is, string& str)
\n{
\nstr.clear();<\/p>\n

int i = 0;
\nchar buff[256];<\/p>\n

char ch;
\nch = is.get();
\nwhile (ch != ' ' && ch != '\\\\n')
\n{
\n\/\/ \u653e\u5230buff
\nbuff[i++] = ch;
\nif (i == 255)
\n{
\nbuff[i] = '\\\\0';
\nstr += buff;
\ni = 0;
\n}<\/p>\n

ch = is.get();
\n}<\/p>\n

if (i > 0)
\n{
\nbuff[i] = '\\\\0';
\nstr += buff;
\n}<\/p>\n

return is;
\n} <\/p>\n

7.\u4e09\u4e2aswap<\/h4>\n

\"\"<\/p>\n<\/p>\n

\u4e8c\u3001<\/span><\/h3>\n

2.1 \u7ecf\u5178\u7684string\u7c7b\u95ee\u9898<\/h4>\n

\u4e0a\u9762\u5df2\u7ecf\u5bf9<\/span>
\n string<\/span>
\n \u7c7b\u8fdb\u884c\u4e86\u7b80\u5355\u7684\u4ecb\u7ecd，\u5927\u5bb6\u53ea\u8981\u80fd\u591f\u6b63\u5e38\u4f7f\u7528\u5373\u53ef\u3002\u5728\u9762\u8bd5\u4e2d，\u9762\u8bd5\u5b98\u603b\u559c\u6b22\u8ba9\u5b66\u751f\u81ea\u5df1\u6765\u6a21\u62df\u5b9e\u73b0string<\/span>
\n \u7c7b，\u6700\u4e3b\u8981\u662f\u5b9e\u73b0<\/span>
\n string<\/span>
\n \u7c7b\u7684\u6784\u9020\u3001\u62f7\u8d1d\u6784\u9020\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26\u91cd\u8f7d\u4ee5\u53ca\u6790\u6784\u51fd\u6570\u3002\u5927\u5bb6\u770b\u4e0b\u4ee5\u4e0bstring<\/span>
\n \u7c7b\u7684\u5b9e\u73b0\u662f\u5426\u6709\u95ee\u9898？<\/span> <\/p>\n

\/\/ \u4e3a\u4e86\u548c\u6807\u51c6\u5e93\u533a\u5206，\u6b64\u5904\u4f7f\u7528String
\nclass String
\n{
\npublic:
\n\/*String()
\n:_str(new char[1])
\n{*_str = '\\\\0';}
\n*\/
\n\/\/String(const char* str = "\\\\0") \u9519\u8bef\u793a\u8303
\n\/\/String(const char* str = nullptr) \u9519\u8bef\u793a\u8303
\nString(const char* str = "")
\n{
\n\/\/ \u6784\u9020String\u7c7b\u5bf9\u8c61\u65f6，\u5982\u679c\u4f20\u9012nullptr\u6307\u9488，\u53ef\u4ee5\u8ba4\u4e3a\u7a0b\u5e8f\u975e
\nif (nullptr == str)
\n{
\nassert(false);
\nreturn;
\n}
\n_str = new char[strlen(str) + 1];
\nstrcpy(_str, str);
\n}
\n~String()
\n{
\nif (_str)
\n{
\ndelete[] _str;
\n_str = nullptr;
\n}
\n}
\nprivate:
\nchar* _str;
\n};
\n\/\/ \u6d4b\u8bd5
\nvoid TestString()
\n{
\nString s1("hello bit!!!");
\nString s2(s1);
\n} <\/p>\n

\"\"<\/p>\n

\u8bf4\u660e：\u4e0a\u8ff0<\/span>
\n String<\/span>
\n \u7c7b\u6ca1\u6709\u663e\u5f0f\u5b9a\u4e49\u5176\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u4e0e\u8d4b\u503c\u8fd0\u7b97\u7b26\u91cd\u8f7d，\u6b64\u65f6\u7f16\u8bd1\u5668\u4f1a\u5408\u6210\u9ed8\u8ba4<\/span>
\n \u7684，\u5f53\u7528<\/span>
\n s1<\/span>
\n \u6784\u9020<\/span>
\n s2<\/span>
\n \u65f6，\u7f16\u8bd1\u5668\u4f1a\u8c03\u7528\u9ed8\u8ba4\u7684\u62f7\u8d1d\u6784\u9020\u3002\u6700\u7ec8\u5bfc\u81f4\u7684\u95ee\u9898\u662f，<\/span>
\n s1<\/span>
\n \u3001<\/span>
\n s2<\/span>
\n \u5171\u7528\u540c\u4e00\u5757\u5185<\/span>
\n \u5b58\u7a7a\u95f4，\u5728\u91ca\u653e\u65f6\u540c\u4e00\u5757\u7a7a\u95f4\u88ab\u91ca\u653e\u591a\u6b21\u800c\u5f15\u8d77\u7a0b\u5e8f\u5d29\u6e83<\/span>
\n ，\u8fd9\u79cd\u62f7\u8d1d\u65b9\u5f0f，\u79f0\u4e3a\u6d45\u62f7\u8d1d\u3002<\/span> <\/p>\n

2.2 \u6d45\u62f7\u8d1d<\/h4>\n

\"\"<\/p>\n

\u6d45\u62f7\u8d1d：\u4e5f\u79f0\u4f4d\u62f7\u8d1d，\u7f16\u8bd1\u5668\u53ea\u662f\u5c06\u5bf9\u8c61\u4e2d\u7684\u503c\u62f7\u8d1d\u8fc7\u6765<\/span>
\n \u3002\u5982\u679c<\/span>
\n \u5bf9\u8c61\u4e2d\u7ba1\u7406\u8d44\u6e90<\/span>
\n ，\u6700\u540e\u5c31\u4f1a<\/span>
\n \u5bfc\u81f4<\/span>
\n \u591a\u4e2a\u5bf9\u8c61\u5171\u4eab\u540c\u4e00\u4efd\u8d44\u6e90，\u5f53\u4e00\u4e2a\u5bf9\u8c61\u9500\u6bc1\u65f6\u5c31\u4f1a\u5c06\u8be5\u8d44\u6e90\u91ca\u653e\u6389，\u800c\u6b64\u65f6\u53e6\u4e00\u4e9b\u5bf9\u8c61\u4e0d\u77e5\u9053\u8be5<\/span>
\n \u8d44\u6e90\u5df2\u7ecf\u88ab\u91ca\u653e，\u4ee5\u4e3a\u8fd8\u6709\u6548，\u6240\u4ee5\u5f53\u7ee7\u7eed\u5bf9\u8d44\u6e90\u8fdb\u9879\u64cd\u4f5c\u65f6，\u5c31\u4f1a\u53d1\u751f\u53d1\u751f\u4e86\u8bbf\u95ee\u8fdd\u89c4<\/span>
\n \u3002\u5c31\u50cf\u4e00\u4e2a\u5bb6\u5ead\u4e2d\u6709\u4e24\u4e2a\u5b69\u5b50，\u4f46\u7236\u6bcd\u53ea\u4e70\u4e86\u4e00\u4efd\u73a9\u5177，\u4e24\u4e2a\u5b69\u5b50\u613f\u610f\u4e00\u5757\u73a9，\u5219\u4e07\u4e8b\u5927\u5409，\u4e07\u4e00\u4e0d\u60f3\u5206\u4eab\u5c31\u4f60\u4e89\u6211\u593a，\u73a9\u5177\u635f\u574f\u3002<\/span> <\/p>\n

\u53ef\u4ee5\u91c7\u7528\u6df1\u62f7\u8d1d\u89e3\u51b3\u6d45\u62f7\u8d1d\u95ee\u9898，\u5373：<\/span>
\n \u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4efd\u72ec\u7acb\u7684\u8d44\u6e90，\u4e0d\u8981\u548c\u5176\u4ed6\u5bf9\u8c61\u5171\u4eab<\/span>
\n \u3002\u7236\u6bcd\u7ed9\u6bcf\u4e2a\u5b69\u5b50\u90fd\u4e70\u4e00\u4efd\u73a9\u5177，\u5404\u81ea\u73a9\u5404\u81ea\u7684\u5c31\u4e0d\u4f1a\u6709\u95ee\u9898\u4e86\u3002<\/span> <\/p>\n

2.3 \u6df1\u62f7\u8d1d<\/span><\/h4>\n

\u5982\u679c\u4e00\u4e2a\u7c7b\u4e2d\u6d89\u53ca\u5230\u8d44\u6e90\u7684\u7ba1\u7406，\u5176\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26\u91cd\u8f7d\u4ee5\u53ca\u6790\u6784\u51fd\u6570\u5fc5\u987b\u8981\u663e\u5f0f\u7ed9\u51fa\u3002\u4e00\u822c\u60c5\u51b5\u90fd\u662f\u6309\u7167\u6df1\u62f7\u8d1d\u65b9\u5f0f\u63d0\u4f9b\u3002<\/span> <\/p>\n

\"\"<\/p>\n<\/p>\n

（1）\u3010<\/span>\u4f20\u7edf\u7248\u5199\u6cd5\u7684<\/span>String<\/span>\u7c7b<\/span>\u3011<\/span><\/h5>\n

class String
\n{
\npublic:
\nString(const char* str = "")
\n{
\n\/\/ \u6784\u9020String\u7c7b\u5bf9\u8c61\u65f6，\u5982\u679c\u4f20\u9012nullptr\u6307\u9488，\u53ef\u4ee5\u8ba4\u4e3a\u7a0b\u5e8f\u975e
\nif (nullptr == str)
\n{
\nassert(false);
\nreturn;
\n}
\n_str = new char[strlen(str) + 1];
\nstrcpy(_str, str);
\n}
\nString(const String& s)
\n: _str(new char[strlen(s._str) + 1])
\n{
\nstrcpy(_str, s._str);
\n}
\nString& operator=(const String& s)
\n{
\nif (this != &s)
\n{
\nchar* pStr = new char[strlen(s._str) + 1];
\nstrcpy(pStr, s._str);
\ndelete[] _str;
\n_str = pStr;
\n}
\nreturn *this;
\n}
\n~String()
\n{
\nif (_str)
\n{
\ndelete[] _str;
\n_str = nullptr;
\n}
\n}
\nprivate:
\nchar* _str;
\n}; <\/p>\n

（2）\u3010\u73b0\u4ee3\u7248\u5199\u6cd5\u7684<\/span>String<\/span>\u7c7b<\/span>\u3011<\/h5>\n

\"\"<\/p>\n

class String
\n{
\npublic:
\nString(const char* str = "")
\n{
\nif (nullptr == str)
\n{
\nassert(false);
\nreturn;
\n}
\n_str = new char[strlen(str) + 1];
\nstrcpy(_str, str);
\n}
\nString(const String& s)
\n: _str(nullptr)
\n{
\nString strTmp(s._str);
\nswap(_str, strTmp._str);
\n}
\n\/\/ \u5bf9\u6bd4\u4e0b\u548c\u4e0a\u9762\u7684\u8d4b\u503c\u90a3\u4e2a\u5b9e\u73b0\u6bd4\u8f83\u597d？
\nString& operator=(String s)
\n{
\nswap(_str, s._str);
\nreturn *this;
\n}
\n\/*
\nString& operator=(const String& s)
\n{
\nif(this != &s)
\n{
\nString strTmp(s);
\nswap(_str, strTmp._str);
\n}
\nreturn *this;
\n}
\n*\/
\n~String()
\n{
\nif (_str)
\n{
\ndelete[] _str;
\n_str = nullptr;
\n}
\n}
\nprivate:
\nchar* _str;
\n}; <\/p>\n

（3）\u3010\u5199\u65f6\u62f7\u8d1d\u3011（\u4e86\u89e3）<\/h5>\n

\"\"<\/p>\n

\u5199\u65f6\u62f7\u8d1d\u5c31\u662f\u4e00\u79cd\u62d6\u5ef6\u75c7，\u662f\u5728\u6d45\u62f7\u8d1d\u7684\u57fa\u7840\u4e4b\u4e0a\u589e\u52a0\u4e86\u5f15\u7528\u8ba1\u6570\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u7684\u3002 <\/span> <\/p>\n

\u5f15\u7528\u8ba1\u6570：\u7528\u6765\u8bb0\u5f55\u8d44\u6e90\u4f7f\u7528\u8005\u7684\u4e2a\u6570\u3002\u5728\u6784\u9020\u65f6，\u5c06\u8d44\u6e90\u7684\u8ba1\u6570\u7ed9\u6210<\/span>
\n 1<\/span>
\n ，\u6bcf\u589e\u52a0\u4e00\u4e2a\u5bf9\u8c61\u4f7f\u7528\u8be5\u8d44\u6e90，\u5c31\u7ed9\u8ba1\u6570\u589e\u52a01<\/span>
\n ，\u5f53\u67d0\u4e2a\u5bf9\u8c61\u88ab\u9500\u6bc1\u65f6，\u5148\u7ed9\u8be5\u8ba1\u6570\u51cf<\/span>
\n 1<\/span>
\n ，\u7136\u540e\u518d\u68c0\u67e5\u662f\u5426\u9700\u8981\u91ca\u653e\u8d44\u6e90，\u5982\u679c\u8ba1\u6570\u4e3a1<\/span>
\n ，\u8bf4\u660e\u8be5\u5bf9\u8c61\u65f6\u8d44\u6e90\u7684\u6700\u540e\u4e00\u4e2a\u4f7f\u7528\u8005，\u5c06\u8be5\u8d44\u6e90\u91ca\u653e；\u5426\u5219\u5c31\u4e0d\u80fd\u91ca\u653e，\u56e0\u4e3a\u8fd8\u6709\u5176\u4ed6\u5bf9\u8c61\u5728\u4f7f\u7528\u8be5\u8d44\u6e90\u3002<\/span> <\/p>\n

\u5199\u65f6\u62f7\u8d1d <\/p>\n

\u5199\u65f6\u62f7\u8d1d\u5728\u8bfb\u53d6\u65f6\u7684\u7f3a\u9677 <\/p>\n

（4）\u6269\u5c55\u9605\u8bfb<\/h5>\n

\u9762\u8bd5\u4e2dstring\u7684\u4e00\u79cd\u6b63\u786e\u5199\u6cd5<\/p>\n

STL \u7684string\u7c7b\u600e\u4e48\u5566？<\/p>\n

（5）\u7f16\u7801<\/h5>\n

\"\"<\/p>\n

\u4e09\u3001\u7efc\u5408\u4ee3\u7801<\/span><\/h3>\n

string.h<\/h4>\n

#define _CRT_SECURE_NO_WARNINGS 1<\/p>\n

#pragma once
\n#include<iostream>
\n#include<assert.h>
\nusing namespace std;<\/p>\n

namespace bit
\n{
\nclass string
\n{
\npublic:
\n\/\/typedef char* iterator;
\nusing iterator = char*;
\nusing const_iterator = const char*;<\/p>\n

\/\/string();
\nstring(const char* str = "");
\nstring(const string& s);
\nstring& operator=(string s);
\n~string();<\/p>\n

void reserve(size_t n);
\nvoid push_back(char ch);
\nvoid append(const char* str);
\nstring& operator+=(char ch);
\nstring& operator+=(const char* str);<\/p>\n

void insert(size_t pos, char ch);
\nvoid insert(size_t pos, const char* str);
\nvoid erase(size_t pos, size_t len = npos);<\/p>\n

size_t find(char ch, size_t pos = 0);
\nsize_t find(const char* str, size_t pos = 0);<\/p>\n

char& operator[](size_t i)
\n{
\nassert(i < _size);<\/p>\n

return _str[i];
\n}<\/p>\n

const char& operator[](size_t i) const
\n{
\nassert(i < _size);<\/p>\n

return _str[i];
\n}<\/p>\n

iterator begin()
\n{
\nreturn _str;
\n}<\/p>\n

iterator end()
\n{
\nreturn _str+_size;
\n}<\/p>\n

const_iterator begin() const
\n{
\nreturn _str;
\n}<\/p>\n

const_iterator end() const
\n{
\nreturn _str + _size;
\n}<\/p>\n

size_t size() const
\n{
\nreturn _size;
\n}<\/p>\n

const char* c_str() const
\n{
\nreturn _str;
\n}<\/p>\n

void clear()
\n{
\n_str[0] = '\\\\0';
\n_size = 0;
\n}<\/p>\n

void swap(string& s);<\/p>\n

string substr(size_t pos, size_t len = npos);
\nprivate:
\nchar* _str = nullptr;
\nsize_t _size = 0;
\nsize_t _capacity = 0;<\/p>\n

public:
\n\/\/ \u2d26
\n\/\/static const size_t npos = -1;<\/p>\n

static const size_t npos;
\n};<\/p>\n

void swap(string& s1, string& s2);
\nbool operator== (const string& lhs, const string& rhs);
\nbool operator!= (const string& lhs, const string& rhs);
\nbool operator> (const string& lhs, const string& rhs);
\nbool operator< (const string& lhs, const string& rhs);
\nbool operator>= (const string& lhs, const string& rhs);
\nbool operator<= (const string& lhs, const string& rhs);<\/p>\n

ostream& operator<<(ostream& os, const string& str);
\nistream& operator>>(istream& is, string& str);
\nistream& operator>>(istream& is, string& str);
\nistream& getline(istream& is, string& str, char delim = '\\\\n');
\n} <\/p>\n

string.cpp<\/h4>\n

#include"string.h"<\/p>\n

namespace bit
\n{
\nconst size_t string::npos = -1;<\/p>\n

\/\/ 11:52
\n\/*string::string()
\n:_str(new char[1]{ '\\\\0' })
\n, _size(0)
\n, _capacity(0)
\n{}*\/<\/p>\n

string::string(const char* str)
\n:_size(strlen(str))
\n{
\n_capacity = _size;
\n_str = new char[_size + 1];<\/p>\n

strcpy(_str, str);
\n}<\/p>\n

\/\/ \u4f20\u7edf\u5199\u6cd5
\n\/\/ s2(s1)
\n\/*string::string(const string& s)
\n{
\n_str = new char[s._capacity + 1];
\nstrcpy(_str, s._str);
\n_size = s._size;
\n_capacity = s._capacity;
\n}*\/<\/p>\n

\/\/ s2(s1)
\n\/\/ \u73b0\u4ee3\u5199\u6cd5
\nstring::string(const string& s)
\n{
\nstring tmp(s._str);
\nswap(tmp);
\n}<\/p>\n

\/\/ s2 = s1 = s3
\n\/\/ s1 = s1;
\n\/\/ \u4f20\u7edf\u5199\u6cd5
\n\/*string& string::operator=(const string& s)
\n{
\nif (this != &s)
\n{
\ndelete[] _str;
\n_str = new char[s._capacity + 1];
\nstrcpy(_str, s._str);
\n_size = s._size;
\n_capacity = s._capacity;
\n}<\/p>\n

return *this;
\n}*\/<\/p>\n

\/\/ \u73b0\u4ee3\u5199\u6cd5
\n\/\/ s1 = s3
\nstring& string::operator=(string s)
\n{
\nswap(s);
\nreturn *this;
\n}<\/p>\n

string::~string()
\n{
\ndelete[] _str;
\n_str = nullptr;
\n_size = 0;
\n_capacity = 0;
\n}<\/p>\n

void string::reserve(size_t n)
\n{
\nif (n > _capacity)
\n{
\n\/\/cout << "reserve:" << n << endl;<\/p>\n

char* tmp = new char[n + 1];
\nstrcpy(tmp, _str);
\ndelete[] _str;
\n_str = tmp;<\/p>\n

_capacity = n;
\n}
\n}<\/p>\n

void string::push_back(char ch)
\n{
\n\/*if (_size == _capacity)
\n{
\nreserve(_capacity == 0 ? 4 : _capacity * 2);
\n}<\/p>\n

_str[_size] = ch;
\n_size++;*\/<\/p>\n

insert(_size, ch);
\n}<\/p>\n

void string::append(const char* str)
\n{
\n\/\/size_t len = strlen(str);
\n\/\/if (_size + len > _capacity)
\n\/\/{
\n\/\/size_t newCapacity = 2 * _capacity;
\n\/\/\/\/ \u62692\u500d\u4e0d\u591f，\u5219\u9700\u8981\u591a\u5c11\u6269\u591a\u5c11
\n\/\/if (newCapacity < _size + len)
\n\/\/newCapacity = _size + len;<\/p>\n

\/\/reserve(newCapacity);
\n\/\/}<\/p>\n

\/\/strcpy(_str + _size, str);
\n\/\/_size += len;<\/p>\n

insert(_size, str);
\n}<\/p>\n

string& string::operator+=(char ch)
\n{
\npush_back(ch);<\/p>\n

return *this;
\n}<\/p>\n

string& string::operator+=(const char* str)
\n{
\nappend(str);<\/p>\n

return *this;
\n}<\/p>\n

void string::insert(size_t pos, char ch)
\n{
\nassert(pos <= _size);<\/p>\n

if (_size == _capacity)
\n{
\nreserve(_capacity == 0 ? 4 : _capacity * 2);
\n}<\/p>\n

\/*int end = _size;
\nwhile (end >= (int)pos)
\n{
\n_str[end + 1] = _str[end];
\n–end;
\n}*\/<\/p>\n

size_t end = _size + 1;
\nwhile (end > pos)
\n{
\n_str[end] = _str[end – 1];
\n–end;
\n}
\n_str[pos] = ch;
\n_size++;
\n}<\/p>\n

void string::insert(size_t pos, const char* str)
\n{
\nassert(pos <= _size);<\/p>\n

size_t len = strlen(str);
\nif (_size + len > _capacity)
\n{
\nsize_t newCapacity = 2 * _capacity;
\n\/\/ \u62692\u500d\u4e0d\u591f，\u5219\u9700\u8981\u591a\u5c11\u6269\u591a\u5c11
\nif (newCapacity < _size + len)
\nnewCapacity = _size + len;<\/p>\n

reserve(newCapacity);
\n}<\/p>\n

\/*int end = _size;
\nwhile (end >= (int)pos)
\n{
\n_str[end + len] = _str[end];
\n–end;
\n}*\/<\/p>\n

size_t end = _size + len;
\nwhile (end > pos + len – 1)
\n{
\n_str[end] = _str[end – len];
\n–end;
\n}<\/p>\n

for (size_t i = 0; i < len; i++)
\n{
\n_str[pos + i] = str[i];
\n}<\/p>\n

_size += len;
\n}<\/p>\n

void string::erase(size_t pos, size_t len)
\n{
\nassert(pos < _size);<\/p>\n

if (len >= _size – pos)
\n{
\n_str[pos] = '\\\\0';
\n_size = pos;
\n}
\nelse
\n{
\n\/\/ \u4ece\u540e\u5f80\u524d\u632a
\nsize_t end = pos + len;
\nwhile (end <= _size)
\n{
\n_str[end – len] = _str[end];
\n++end;
\n}<\/p>\n

_size -= len;
\n}
\n}<\/p>\n

size_t string::find(char ch, size_t pos)
\n{
\nassert(pos < _size);<\/p>\n

for (size_t i = pos; i < _size; i++)
\n{
\nif (ch == _str[i])
\nreturn i;
\n}<\/p>\n

return npos;
\n}<\/p>\n

size_t string::find(const char* str, size_t pos)
\n{
\nassert(pos < _size);<\/p>\n

const char* ptr = strstr(_str + pos, str);
\nif (ptr == nullptr)
\n{
\nreturn npos;
\n}
\nelse
\n{
\nreturn ptr – _str;
\n}
\n}<\/p>\n

string string::substr(size_t pos, size_t len)
\n{
\nassert(pos < _size);<\/p>\n

\/\/ \u5927\u4e8e\u540e\u9762\u5269\u4f59\u4e32\u7684\u957f\u5ea6，\u5219\u76f4\u63a5\u53d6\u5230\u7ed3\u5c3e
\nif (len > (_size – pos))
\n{
\nlen = _size – pos;
\n}<\/p>\n

bit::string sub;
\nsub.reserve(len);
\nfor (size_t i = 0; i < len; i++)
\n{
\nsub += _str[pos + i];
\n}<\/p>\n

\/\/cout << sub.c_str() << endl;
\nreturn sub;
\n}<\/p>\n

void string::swap(string& s)
\n{
\nstd::swap(_str, s._str);
\nstd::swap(_size, s._size);
\nstd::swap(_capacity, s._capacity);
\n}<\/p>\n

void swap(string& s1, string& s2)
\n{
\ns1.swap(s2);
\n}<\/p>\n

bool operator== (const string& lhs, const string& rhs)
\n{
\nreturn strcmp(lhs.c_str(), rhs.c_str()) == 0;
\n}<\/p>\n

bool operator!= (const string& lhs, const string& rhs)
\n{
\nreturn !(lhs == rhs);
\n}<\/p>\n

bool operator> (const string& lhs, const string& rhs)
\n{
\nreturn !(lhs <= rhs);
\n}<\/p>\n

bool operator< (const string& lhs, const string& rhs)
\n{
\nreturn strcmp(lhs.c_str(), rhs.c_str()) < 0;
\n}<\/p>\n

bool operator>= (const string& lhs, const string& rhs)
\n{
\nreturn !(lhs < rhs);
\n}<\/p>\n

bool operator<= (const string& lhs, const string& rhs)
\n{
\nreturn lhs < rhs || lhs == rhs;
\n}<\/p>\n

ostream& operator<<(ostream& os, const string& str)
\n{
\n\/\/os<<'"';
\n\/\/os << "xx\\\\"xx";
\nfor (size_t i = 0; i < str.size(); i++)
\n{
\n\/\/os << str[i];
\nos << str[i];
\n}
\n\/\/os << '"';<\/p>\n

return os;
\n}<\/p>\n

istream& operator>>(istream& is, string& str)
\n{
\nstr.clear();<\/p>\n

int i = 0;
\nchar buff[256];<\/p>\n

char ch;
\nch = is.get();
\nwhile (ch != ' ' && ch != '\\\\n')
\n{
\n\/\/ \u653e\u5230buff
\nbuff[i++] = ch;
\nif (i == 255)
\n{
\nbuff[i] = '\\\\0';
\nstr += buff;
\ni = 0;
\n}<\/p>\n

ch = is.get();
\n}<\/p>\n

if (i > 0)
\n{
\nbuff[i] = '\\\\0';
\nstr += buff;
\n}<\/p>\n

return is;
\n}<\/p>\n

istream& getline(istream& is, string& str, char delim)
\n{
\nstr.clear();<\/p>\n

int i = 0;
\nchar buff[256];<\/p>\n

char ch;
\nch = is.get();
\nwhile (ch != delim)
\n{
\n\/\/ \u653e\u5230buff
\nbuff[i++] = ch;
\nif (i == 255)
\n{
\nbuff[i] = '\\\\0';
\nstr += buff;
\ni = 0;
\n}<\/p>\n

ch = is.get();
\n}<\/p>\n

if (i > 0)
\n{
\nbuff[i] = '\\\\0';
\nstr += buff;
\n}<\/p>\n

return is;
\n}
\n} <\/p>\n

test.cpp<\/h4>\n

#include"string.h"<\/p>\n

void test_string1()
\n{
\nbit::string s2;
\ncout << s2.c_str() << endl;<\/p>\n

bit::string s1("hello world");
\ncout << s1.c_str() << endl;<\/p>\n

s1[0] = 'x';
\ncout << s1.c_str() << endl;<\/p>\n

for (size_t i = 0; i < s1.size(); i++)
\n{
\ncout << s1[i] << " ";
\n}
\ncout << endl;<\/p>\n

\/\/ \u8fed\u4ee3\u5668 — \u50cf\u6307\u9488\u4e00\u6837\u7684\u5bf9\u8c61
\nbit::string::iterator it1 = s1.begin();
\nwhile (it1 != s1.end())
\n{
\n(*it1)–;<\/p>\n

++it1;
\n}
\ncout << endl;<\/p>\n

it1 = s1.begin();
\nwhile (it1 != s1.end())
\n{
\ncout << *it1 << " ";
\n++it1;
\n}
\ncout << endl;<\/p>\n

\/\/ \u4fee\u6539
\n\/\/ \u5e95\u5c42\u662f\u8fed\u4ee3\u5668\u7684\u652f\u6301
\n\/\/ \u610f\u5473\u7740\u652f\u6301\u8fed\u4ee3\u5668\u5c31\u652f\u6301\u8303\u56f4for
\nfor (auto& ch : s1)
\n{
\nch++;
\n}<\/p>\n

for (auto ch : s1)
\n{
\ncout << ch << " ";
\n}
\ncout << endl;<\/p>\n

const bit::string s3("xxxxxxxxx");
\nfor (auto& ch : s3)
\n{
\n\/\/ch++;
\ncout << ch << " ";
\n}
\ncout << endl;
\n}<\/p>\n

void test_string2()
\n{
\nbit::string s1("hello world");
\ncout << s1.c_str() << endl;<\/p>\n

s1 += '#';
\ns1 += "#hello world";
\ncout << s1.c_str() << endl;<\/p>\n

bit::string s2("hello world");
\ncout << s2.c_str() << endl;
\ns2.insert(6, 'x');
\ncout << s2.c_str() << endl;<\/p>\n

s2.insert(0, 'x');
\ncout << s2.c_str() << endl;<\/p>\n

bit::string s3("hello world");
\ncout << s3.c_str() << endl;
\ns3.insert(6, "xxx");
\ncout << s3.c_str() << endl;<\/p>\n

s3.insert(0, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
\ncout << s3.c_str() << endl;
\n}<\/p>\n

void test_string3()
\n{
\nbit::string s1("hello world");
\ncout << s1.c_str() << endl;<\/p>\n

s1.erase(6, 2);
\ncout << s1.c_str() << endl;<\/p>\n

s1.erase(5, 20);
\ncout << s1.c_str() << endl;<\/p>\n

s1.erase(3);
\ncout << s1.c_str() << endl;
\n}<\/p>\n

void test_string4()
\n{
\nbit::string s1("hello world");
\ncout << s1.find(' ') << endl;
\ncout << s1.find("wo") << endl;<\/p>\n

bit::string s2 = "https:\/\/legacy.cplusplus.com\/reference\/cstring\/strstr\/?kw=strstr";
\n\/\/bit::string s2 = "https:\/\/blog.csdn.net\/ww753951\/article\/details\/130427526";
\nsize_t pos1 = s2.find(':');
\nsize_t pos2 = s2.find('\/', pos1+3);
\nif (pos1 != string::npos && pos2 != string::npos)
\n{
\nbit::string domain = s2.substr(pos1 + 3, pos2 – (pos1 + 3));
\ncout << domain.c_str() << endl;<\/p>\n

bit::string uri = s2.substr(pos2+1);
\ncout << uri.c_str() << endl;
\n}
\n}<\/p>\n

void test_string5()
\n{
\nbit::string s1("hello world");
\nbit::string s2(s1);
\ncout << s1.c_str() << endl;
\ncout << s2.c_str() << endl;<\/p>\n

s1[0] = 'x';
\ncout << s1.c_str() << endl;
\ncout << s2.c_str() << endl;<\/p>\n

bit::string s3("xxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
\ns1 = s3;
\ncout << s1.c_str() << endl;
\ncout << s3.c_str() << endl;<\/p>\n

s1 = s1;
\ncout << s1.c_str() << endl;
\n}<\/p>\n

void test_string6()
\n{
\n\/\/bit::string s1("hello world");
\n\/\/bit::string s2(s1);
\n\/\/bit::string s3 = s1;
\n \u6784\u9020+\u62f7\u8d1d ->\u4f18\u5316\u76f4\u63a5\u6784\u9020
\n\/\/bit::string s4 = "hello world";<\/p>\n

\/\/cout << (s1 == s2) << endl;
\n\/\/cout << (s1 < s2) << endl;
\n\/\/cout << (s1 > s2) << endl;
\n\/\/cout << (s1 == "hello world") << endl;
\n\/\/cout << ("hello world" == s1) << endl;<\/p>\n

operator<<(cout, s1);
\n\/\/cout << s1 << endl;<\/p>\n

\/\/cin >> s1;
\n\/\/cout << s1 << endl;
\n\/\/
\n\/\/std::string ss1("hello world");
\n\/\/cin >> ss1;
\n\/\/cout << ss1 << endl;<\/p>\n

bit::string s1;
\n\/\/cin >> s1;
\n\/\/cout << s1 << endl;<\/p>\n

getline(cin, s1);
\ncout << s1 << endl;<\/p>\n

getline(cin, s1, '#');
\ncout << s1 << endl;
\n}<\/p>\n

\/\/void test_string7()
\n\/\/{
\n\/\/bit::string s1("hello world");
\n\/\/bit::string s2("xxxxxxxxxxxxxxxxxxxxxxx");
\n\/\/
\n\/\/\/\/swap(s1, s2);
\n\/\/s1.swap(s2);
\n\/\/cout << s1 << endl;
\n\/\/cout << s2 << endl;
\n\/\/}<\/p>\n

void test_string8()
\n{
\nbit::string s1("hello world");
\nbit::string s2(s1);<\/p>\n

bit::string s3("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
\ns1 = s3;<\/p>\n

cout << s1 << endl;
\ncout << s3 << endl;<\/p>\n

char arr1[] = "types";
\nchar16_t arr2[] = u"types";
\nchar32_t arr3[] = U"types";
\nwchar_t arr4[] = L"types";<\/p>\n

cout << sizeof(arr1) << endl;
\ncout << sizeof(arr2) << endl;
\ncout << sizeof(arr3) << endl;
\ncout << sizeof(arr4) << endl;<\/p>\n

char arr5[] = "\u82f9\u679c apple";
\ncout << sizeof(arr5) << endl;
\narr5[1]++;
\narr5[1]++;
\narr5[1]–;
\narr5[1]–;
\narr5[1]–;
\narr5[1]–;<\/p>\n

arr5[3]–;
\narr5[3]–;
\narr5[3]–;
\n}<\/p>\n

\/\/int main()
\n\/\/{
\n\/\/test_string8();
\n\/\/
\n\/\/return 0;
\n\/\/}<\/p>\n

#include<vector><\/p>\n

int main()
\n{
\nvector<int> v1;
\nvector<int> v2(10, 1);
\nv1.push_back(1);
\nv1.push_back(2);
\nv1.push_back(3);
\nv1.push_back(4);<\/p>\n

\/\/ \u904d\u5386
\nfor (size_t i = 0; i < v1.size(); i++)
\n{
\ncout << v1[i] << " ";
\n}
\ncout << endl;<\/p>\n

vector<int>::iterator it1 = v1.begin();
\nwhile (it1 != v1.end())
\n{
\ncout << *it1 << " ";
\n++it1;
\n}
\ncout << endl;<\/p>\n

for (auto e : v1)
\n{
\ncout << e << " ";
\n}
\ncout << endl;<\/p>\n

vector<string> vstr;
\nstring s1 = "\u5f20\u4e09";
\nvstr.push_back(s1);
\nvstr.push_back("\u674e\u56db");<\/p>\n

for (const auto& e : vstr)
\n{
\ncout << e << " ";
\n}
\ncout << endl;<\/p>\n

vstr[0] += 'x';
\nvstr[0] += "apple";
\n\/\/vstr[0][0]++;
\nvstr[0][1]++;
\nvstr[0][1]++;
\nvstr.operator[](0).operator[](1)++;<\/p>\n

for (const auto& e : vstr)
\n{
\ncout << e << " ";
\n}
\ncout << endl;<\/p>\n

return 0;
\n} <\/p>\n

\u5b8c\u2014\u2014<\/p>\n

\n

\u4e0b\u6b21\u7ee7\u7eed\u5427\u3002\u3002\u3002vector<\/p>\n

\u6211\u548c\u4f60\u2014\u795e\u5947\u963f\u5466<\/p>\n

\"\"<\/p>\n

\u81f3\u6b64\u7ed3\u675f！<\/p>\n

\u6211\u662f\u4e91\u8fb9\u6709\u4e2a\u7a3b\u8349\u4eba<\/span><\/p>\n

\u671f\u5f85\u4e0e\u4f60\u7684\u4e0b\u4e00\u6b21\u76f8\u9047！<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

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