{"id":651,"date":"2020-03-07T15:27:50","date_gmt":"2020-03-07T07:27:50","guid":{"rendered":"http:\/\/kylelv.com\/?p=651"},"modified":"2020-03-10T00:01:19","modified_gmt":"2020-03-09T16:01:19","slug":"%e7%bb%a7%e6%89%bf%e8%87%aastring%e7%9a%84mystring","status":"publish","type":"post","link":"https:\/\/blog.kylelv.com\/?p=651","title":{"rendered":"\u7ee7\u627f\u81eastring\u7684MyString"},"content":{"rendered":"\n

\u7ee7\u627f\u81eastring\u7684MyString<\/h2>\n\n\n\n

\u603b\u65f6\u95f4\u9650\u5236:\u00a01000ms\u00a0\u5185\u5b58\u9650\u5236:\u00a065536kB<\/p>\n\n\n\n

\u63cf\u8ff0<\/p>\n\n\n\n

\u7a0b\u5e8f\u586b\u7a7a\uff0c\u8f93\u51fa\u6307\u5b9a\u7ed3\u679c<\/p>\n\n\n\n

#include <cstdlib>\n#include <iostream>\n#include <string>\n#include <algorithm>\nusing namespace std;\nclass MyString:public string\n{<\/pre>\n\n\n\n
\/\/ \u5728\u6b64\u5904\u8865\u5145\u4f60\u7684\u4ee3\u7801<\/pre>\n\n\n\n
};\n\n\nint main()\n{\n\tMyString s1(\"abcd-\"),s2,s3(\"efgh-\"),s4(s1);\n\tMyString SArray[4] = {\"big\",\"me\",\"about\",\"take\"};\n\tcout << \"1. \" << s1 << s2 << s3<< s4<< endl;\n\ts4 = s3;\n\ts3 = s1 + s3;\n\tcout << \"2. \" << s1 << endl;\n\tcout << \"3. \" << s2 << endl;\n\tcout << \"4. \" << s3 << endl;\n\tcout << \"5. \" << s4 << endl;\n\tcout << \"6. \" << s1[2] << endl;\n\ts2 = s1;\n\ts1 = \"ijkl-\";\n\ts1[2] = 'A' ;\n\tcout << \"7. \" << s2 << endl;\n\tcout << \"8. \" << s1 << endl;\n\ts1 += \"mnop\";\n\tcout << \"9. \" << s1 << endl;\n\ts4 = \"qrst-\" + s2;\n\tcout << \"10. \" << s4 << endl;\n\ts1 = s2 + s4 + \" uvw \" + \"xyz\";\n\tcout << \"11. \" << s1 << endl;\n        sort(SArray,SArray+4);\n\tfor( int i = 0;i < 4;i ++ )\n\tcout << SArray[i] << endl;\n\t\/\/s1\u7684\u4ece\u4e0b\u68070\u5f00\u59cb\u957f\u5ea6\u4e3a4\u7684\u5b50\u4e32\n\tcout << s1(0,4) << endl;\n\t\/\/s1\u7684\u4ece\u4e0b\u68075\u5f00\u59cb\u957f\u5ea6\u4e3a10\u7684\u5b50\u4e32\n\tcout << s1(5,10) << endl;\n\treturn 0;\n}<\/pre>\n\n\n\n
\u8f93\u5165<\/p>\n\n\n\n
\u65e0<\/p>\n\n\n\n
\u8f93\u51fa<\/p>\n\n\n\n
1. abcd-efgh-abcd-
2. abcd-
3.
4. abcd-efgh-
5. efgh-
6. c
7. abcd-
8. ijAl-
9. ijAl-mnop
10. qrst-abcd-
11. abcd-qrst-abcd- uvw xyz
about
big
me
take
abcd
qrst-abcd-<\/p>\n\n\n\n
\u6837\u4f8b\u8f93\u5165<\/p>\n\n\n\n
\u65e0<\/pre>\n\n\n\n
\u6837\u4f8b\u8f93\u51fa<\/p>\n\n\n\n
1. abcd-efgh-abcd-\n2. abcd-\n3. \n4. abcd-efgh-\n5. efgh-\n6. c\n7. abcd-\n8. ijAl-\n9. ijAl-mnop\n10. qrst-abcd-\n11. abcd-qrst-abcd- uvw xyz\nabout\nbig\nme\ntake\nabcd\nqrst-abcd-\n<\/pre>\n\n\n\n
\u63d0\u793a\u63d0\u793a 1\uff1a\u5982\u679c\u5c06\u7a0b\u5e8f\u4e2d\u6240\u6709 “MyString” \u7528 “string” \u66ff\u6362\uff0c\u90a3\u4e48\u9664
\u4e86\u6700\u540e\u4e24\u6761\u7ea2\u8272\u7684\u8bed\u53e5\u7f16\u8bd1\u65e0\u6cd5\u901a\u8fc7\u5916\uff0c\u5176\u4ed6\u8bed\u53e5\u90fd\u6ca1\u6709\u95ee\u9898\uff0c\u800c\u4e14\u8f93\u51fa\u548c\u524d
\u9762\u7ed9\u7684\u7ed3\u679c\u543b\u5408\u3002\u4e5f\u5c31\u662f\u8bf4\uff0cMyString \u7c7b\u5bf9 string \u7c7b\u7684\u529f\u80fd\u6269\u5145\u53ea\u4f53\u73b0\u5728\u6700
\u540e\u4e24\u6761\u8bed\u53e5\u4e0a\u9762\u3002<\/p>\n\n\n\n
\u63d0\u793a 2: string \u7c7b\u6709\u4e00\u4e2a\u6210\u5458\u51fd\u6570 string substr(int start,int
length); \u80fd\u591f\u6c42\u4ece start \u4f4d\u7f6e\u5f00\u59cb\uff0c\u957f\u5ea6\u4e3a length \u7684\u5b50\u4e32<\/p>\n\n\n\n
\u63d0\u793a 3: C++\u4e2d\uff0c\u6d3e\u751f\u7c7b\u7684\u5bf9\u8c61\u53ef\u4ee5\u8d4b\u503c\u7ed9\u57fa\u7c7b\u5bf9\u8c61\uff0c\u56e0\u4e3a\uff0c\u4e00\u4e2a\u6d3e\u751f
\u7c7b\u5bf9\u8c61\uff0c\u4e5f\u53ef\u770b\u4f5c\u662f\u4e00\u4e2a\u57fa\u7c7b\u5bf9\u8c61\uff08\u5927\u5b66\u751f\u662f\u5b66\u751f\uff09\u3002\u53cd\u8fc7\u6765\u5219\u4e0d\u884c(\u5b66\u751f\u672a
\u5fc5\u662f\u5927\u5b66\u751f\uff09 \u540c\u6837\uff0c\u8c03\u7528\u9700\u8981\u57fa\u7c7b\u5bf9\u8c61\u4f5c\u53c2\u6570\u7684\u51fd\u6570\u65f6\uff0c\u4ee5\u6d3e\u751f\u7c7b\u5bf9\u8c61\u4f5c\u4e3a\u5b9e\u53c2\uff0c\u4e5f\u662f\u6ca1\u6709\u95ee\u9898\u7684<\/p>\n\n\n\n
\u6765\u6e90Guo Wei<\/p>\n\n\n\n
#include <cstdlib>\n#include <iostream>\n#include <string>\n#include <algorithm>\nusing namespace std;\nclass MyString:public string\n{\n\/\/ \u5728\u6b64\u5904\u8865\u5145\u4f60\u7684\u4ee3\u7801\npublic:\n\tMyString():string(\"\\0\"){}\n\tMyString(const char *s):string(s){}\n\tMyString(const MyString &s):string(s){}\n\tMyString operator +(const char *s){\n\t\tstring a=*this;\n\t\treturn MyString((a+s).c_str());\n\t}\n\tMyString operator +(const MyString &s){\n\t\tstring a=*this,b=s;\n\t\treturn MyString((a+b).c_str());\n\t}\n\tfriend MyString operator +(const char *s,const MyString &z){\n\t\tstring a=s,b=z;\n\t\treturn MyString((a+b).c_str());\n\t}\n\tstring operator ()(int x,int y){\n\t\tstring tp;\n\t\tfor(int i=0;i<y;i++) tp+=(*this)[i+x];\n\t\treturn tp;\n\t}\n};\n\n\nint main()\n{\n\tMyString s1(\"abcd-\"),s2,s3(\"efgh-\"),s4(s1);\n\tMyString SArray[4] = {\"big\",\"me\",\"about\",\"take\"};\n\tcout << \"1. \" << s1 << s2 << s3<< s4<< endl;\n\ts4 = s3;\n\ts3 = s1 + s3;\n\tcout << \"2. \" << s1 << endl;\n\tcout << \"3. \" << s2 << endl;\n\tcout << \"4. \" << s3 << endl;\n\tcout << \"5. \" << s4 << endl;\n\tcout << \"6. \" << s1[2] << endl;\n\ts2 = s1;\n\ts1 = \"ijkl-\";\n\ts1[2] = 'A' ;\n\tcout << \"7. \" << s2 << endl;\n\tcout << \"8. \" << s1 << endl;\n\ts1 += \"mnop\";\n\tcout << \"9. \" << s1 << endl;\n\ts4 = \"qrst-\" + s2;\n\tcout << \"10. \" << s4 << endl;\n\ts1 = s2 + s4 + \" uvw \" + \"xyz\";\n\tcout << \"11. \" << s1 << endl;\n        sort(SArray,SArray+4);\n\tfor( int i = 0;i < 4;i ++ )\n\tcout << SArray[i] << endl;\n\t\/\/s1\u7684\u4ece\u4e0b\u68070\u5f00\u59cb\u957f\u5ea6\u4e3a4\u7684\u5b50\u4e32\n\tcout << s1(0,4) << endl;\n\t\/\/s1\u7684\u4ece\u4e0b\u68075\u5f00\u59cb\u957f\u5ea6\u4e3a10\u7684\u5b50\u4e32\n\tcout << s1(5,10) << endl;\n\treturn 0;\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u7ee7\u627f\u81eastring\u7684MyString \u603b\u65f6\u95f4\u9650\u5236:\u00a01000ms\u00a0\u5185\u5b58\u9650\u5236:\u00a065536kB \u63cf\u8ff0 \u7a0b\u5e8f\u586b\u7a7a\uff0c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[],"class_list":["post-651","post","type-post","status-publish","format-standard","hentry","category-70"],"_links":{"self":[{"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=\/wp\/v2\/posts\/651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=651"}],"version-history":[{"count":2,"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=\/wp\/v2\/posts\/651\/revisions"}],"predecessor-version":[{"id":661,"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=\/wp\/v2\/posts\/651\/revisions\/661"}],"wp:attachment":[{"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.kylelv.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}