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Tricky Google interview question
A friend of mine is interviewing for a job. One of the interview questions got me thinking, just wanted some feedback.
21 A...
Can I “multiply” a string (in C#)?
...r code is elegant for C#, as it currently stands, for this problem. The point I'm trying to make is: (I believe) it would be very easy (for microsoft, as strings are sealed) to extend C# to overload the * operator to allow int * string multiplication. Which would then actually be elegant in some ...
How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
... com.google.common.base.Preconditions.*;
String getDayOfMonthSuffix(final int n) {
checkArgument(n >= 1 && n <= 31, "illegal day of month: " + n);
if (n >= 11 && n <= 13) {
return "th";
}
switch (n % 10) {
case 1: return "st";
cas...
How to find an available port?
...sten on any free port.
ServerSocket s = new ServerSocket(0);
System.out.println("listening on port: " + s.getLocalPort());
If you want to use a specific set of ports, then the easiest way is probably to iterate through them until one works. Something like this:
public ServerSocket create(int[] p...
How do pointer to pointers work in C?
How do pointers to pointers work in C?
When would you use them?
14 Answers
14
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Choose newline character in Notepad++
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"Edit -> EOL Conversion". You can convert to Windows/Linux/Mac EOL there. The current format is displayed in the status bar.
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Android Camera : data intent returns null
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The default Android camera application returns a non-null intent only when passing back a thumbnail in the returned Intent. If you pass EXTRA_OUTPUT with a URI to write to, it will return a null intent and the picture is in the URI that you passed in.
You can verify this by looking...
When should the xlsm or xlsb formats be used?
...memory,
the file format has no effect on application/calculation speed
Converters – both formats will have identical converter support
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What is the difference between a reference type and value type in c#?
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Your examples are a little odd because while int, bool and float are specific types, interfaces and delegates are kinds of type - just like struct and enum are kinds of value types.
I've written an explanation of reference types and value types in this article. I'd be ...
How many levels of pointers can we have?
How many pointers ( * ) are allowed in a single variable?
14 Answers
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