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Determining complexity for recursive functions (Big O notation)
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The time complexity, in Big O notation, for each function:
int recursiveFun1(int n)
{
if (n <= 0)
return 1;
else
return 1 + recursiveFun1(n-1);
}
This function is being called recursively n times before reaching the base case so its O(n), often called line...
How to save a BufferedImage as a File
...outputfile exists. If it doesn't, write() will (incorrectly) throw a NullPointerException
– Cody S
Oct 23 '14 at 18:52
9
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Java Naming Convention with Acronyms [closed]
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@DerFlatulator: it's a question of automation when converting from UpperCamelCase to lowerCamelCase: I had the problem when automating Hibernate mapping to a snake_case: DvdPlayer -> dvd_player but DVDPlayer -> d_v_d_player. There is no way to automate DVDPlayer to dvd_...
sizeof single struct member in C
...se it like this:
typedef struct
{
float calc;
char text[255];
int used;
} Parent;
typedef struct
{
char flag;
char text[member_size(Parent, text)];
int used;
} Child;
I'm actually a bit surprised that sizeof((type *)0)->member) is even allowed as a constant expression....
How to throw an exception in C?
I typed this into google but only found howtos in C++,
11 Answers
11
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Performing Breadth First Search recursively
... that this is just some kind of thought exercise, or even a trick homework/interview question, but I suppose I could imagine some bizarre scenario where you're not allowed any heap space for some reason [some really bad custom memory manager? some bizarre runtime/OS issues?] while you still have acc...
NULL vs nullptr (Why was it replaced?) [duplicate]
I know that in C++ 0x or NULL was replaced by nullptr in pointer-based applications. I'm just curious of the exact reason why they made this replacement?
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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
...compiler treats a null string the same as an empty string, but it does not convert the value of the original null string.
More information on the + binary operator:
The binary + operator performs string concatenation when one or both operands are of type string.
If an operand of string concatenati...
What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
... abstract the low-level representation and make it easier to comprehend ( uint64_t instead of long long type, which is 8 bytes).
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PHP: merge two arrays while keeping keys instead of reindexing?
...ow can I merge two arrays (one with string => value pairs and another with int => value pairs) while keeping the string/int keys? None of them will ever overlap (because one has only strings and the other has only integers).
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