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Finding duplicates in O(n) time and O(1) space
...ns in O(N) time. A swap only occurs if there is an i such that A[i] != i, and each swap sets at least one element such that A[i] == i, where that wasn't true before. This means that the total number of swaps (and thus the total number of executions of the while loop body) is at most N-1.
The seco...
Can I use assert on Android devices?
I want to use the Assert keyword in my android apps to destroy my app in some cases on the emulator, or my device during testing. Is this possible?
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Android global variable
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You can extend the base android.app.Application class and add member variables like so:
public class MyApplication extends Application {
private String someVariable;
public String getSomeVariable() {
return someVariable;
}
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Tree data structure in C#
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My best advice would be that there is no standard tree data structure because there are so many ways you could implement it that it would be impossible to cover all bases with one solution. The more specific a solution, the less likely it is applicable to any given p...
Show compose SMS view in Android
I want to send a sms with Android.
14 Answers
14
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How do I analyze a program's core dump file with GDB when it has command-line parameters?
... file.
After you get inside the GDB prompt (on execution of the above command), type:
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(gdb) where
This will get you with the information, of the stack, where you can analayze the cause of the crash/fault.
Other command, for the same purposes is:
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(gdb) bt full
This is the same as above...
What is the logic behind the “using” keyword in C++?
...aration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier appertains
to that typedef-name. It has the same semantics as if it were
introduced by the typedef specifier. In particular, it does not define
a new type and ...
Java: using switch statement with enum under subclass
First I'll state that I'm much more familiar with enums in C# and it seems like enums in java is a quite mess.
6 Answers
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How can I catch a ctrl-c event?
...;stdlib.h>
#include <stdio.h>
#include <unistd.h>
void my_handler(int s){
printf("Caught signal %d\n",s);
exit(1);
}
int main(int argc,char** argv)
{
struct sigaction sigIntHandler;
sigIntHandler.sa_handler = my_handler;
sigemptyset(&sigIntHand...
Creating a custom JButton in Java
Is there a way to create a JButton with your own button graphic and not just with an image inside the button?
5 Answers
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