Is the time complexity of the empty algorithm O (0)?
WEBJul 9, 2010 · From Wikipedia: A description of a function in terms of big O notation usually only provides an upper bound on the growth rate of the function. From this description, since the empty algorithm requires 0 time to execute, it has an upper bound performance of O (0). This means, it's also O (1), which happens to be a larger upper bound.
What is the difference between NULL, '\\0' and 0?
WEBNULL is not guaranteed to be 0 -- its exact value is architecture-dependent. Most major architectures define it to (void*)0. '\0' will always equal 0, because that is how byte 0 is encoded in a character literal. I don't remember whether C compilers are required to use ASCII -- if not, '0' might not always equal 48.
performance - what does O (N) mean - Stack Overflow
WEBNov 4, 2010 · 101. The comment was referring to the Big-O Notation. Briefly: O (1) means in constant time - independent of the number of items. O (N) means in proportion to the number of items. O (log N) means a time proportional to log (N) Basically any 'O' notation means an operation will take time up to a maximum of k*f (N) where: k …
objective c - What does \0 stand for? - Stack Overflow
WEBJan 31, 2013 · The null character '\0' (also null terminator), abbreviated NUL, is a control character with the value zero. Its the same in C and objective C. The character has much more significance in C and it serves as a reserved character used to signify the end of a string,often called a null-terminated string. The length of a C string (an array ...
python - What is dtype ('O'), in pandas? - Stack Overflow
WEBJun 1, 2016 · dtype('O') You can interpret the last as Pandas dtype('O') or Pandas object which is Python type string, and this corresponds to Numpy string_, or unicode_ types. Pandas dtype Python type NumPy type Usage. object str string_, unicode_ Text. Like Don Quixote is on ass, Pandas is on Numpy and Numpy understand the underlying architecture of …
big o - What does "O (1) access time" mean? - Stack Overflow
WEBO(1) always execute in the same time regardless of dataset n. An example of O(1) would be an ArrayList accessing its element with index. O(n) also known as Linear Order, the performance will grow linearly and in direct proportion to the size of the input data. An example of O(n) would be an ArrayList insertion and deletion at random position.
c++ - What does '\0' mean? - Stack Overflow
WEBThe \0 is treated as NULL Character. It is used to mark the end of the string in C. In C, string is a pointer pointing to array of characters with \0 at the end. So following will be valid representation of strings in C. char *c =”Hello”; // it is actually Hello\0. char c[] = {‘Y’,’o’,’\0′}; The applications of ‘\0’ lies in ...
What does it mean when an HTTP request returns status code 0?
WEBMay 16, 2009 · 11. An HTTP response code of 0 indicates that the AJAX request was cancelled. This can happen either from a timeout, XHR abortion or a firewall stomping on the request. A timeout is common, it means the request failed to …
What does the symbol \\0 mean in a string-literal?
WEBNov 10, 2018 · 1. '\0' is referred to as NULL character or NULL terminator It is the character equivalent of integer 0 (zero) as it refers to nothing. In C language it is generally used to mark an end of a string. example string a="Arsenic"; every character stored in …
Difference between Big-O and Little-O Notation - Stack Overflow
WEBSep 1, 2009 · For every choice of a constant k > 0, you can find a constant a such that the inequality 0 <= f(x) < k g(x) holds for all x > a. Once again, note that o(g) is a set. In Big-O, it is only necessary that you find a particular multiplier k for which the inequality holds beyond some minimum x .