摘要:
样本(\\(x_{i}\\),\\(y_{i}\\))个数为\\(m\\): $$\{x_{1},x_{2},x_{3}...x_{m}\}$$ $$\{y_{1},y_{2},y_{3}...y_{m}\}$$ 其中\\(x_{i}\\)为\\(n\\)维向量: $$x_{i}=\{x_{i1}, 阅读全文
摘要:
``` string& insert (size_t pos, const string& str); string& insert (size_t pos, const string& str, size_t subpos, size_t sublen); string& insert (size_t pos, const char* s); string& insert (si... 阅读全文
摘要:
```
string& append (const string& str);
string& append (const string& str, size_t subpos, size_t sublen); string& append (const char* s);
string& append (const char* s, size_t n);
string& append (s... 阅读全文
摘要:
```
string& assign (const string& str);
string& assign (const string& str, size_t subpos, size_t sublen); string& assign (const char* s);
string& assign (const char* s, size_t n);
string& assign (siz... 阅读全文
摘要:
```
string();
string (const string& str);
string (const string& str, size_t pos, size_t len = npos);
string (const char* s);
string (const char* s, size_t n);
string (size_t n, char c); /*
std::strin... 阅读全文
摘要:
loop=1 while [ "$loop" -le 10 ] do echo "loop:$loop" loop=$(($loop+2)) done while true do echo "while true:test" done 阅读全文
摘要:
数字循环 sum=0 for((i=1;i 阅读全文