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Understanding recursion [closed]
...t to children, and @ means the pointer points to null):
5
/ \
4 3
/\ /\
2 1 @ @
/\ /\
@@ @@
If we call sumNode on the root (the node with value 5), we will return:
return root->value + sumNode( root->left ) + sumNode( root->right ) ;
return 5 + sumNode( node-with-...
How can I clear or empty a StringBuilder? [duplicate]
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answered Mar 4 '11 at 10:29
Marcus FrödinMarcus Frödin
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Rank items in an array using Python/NumPy, without sorting array twice
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Use slicing on the left-hand side in the last step:
array = numpy.array([4,2,7,1])
temp = array.argsort()
ranks = numpy.empty_like(temp)
ranks[temp] = numpy.arange(len(array))
This avoids sorting twice by inverting the permutation in the last step.
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How to update gradle in android studio?
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14 Answers
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Is there a way to check if int is legal enum in C#?
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[Flags] public enum PetType
{
None = 0, Dog = 1, Cat = 2, Rodent = 4, Bird = 8, Reptile = 16, Other = 32
};
public class Example
{
public static void Main()
{
object value;
// Call IsDefined with underlying integral value of member.
value = 1;
Console.Writ...
Page redirect after certain time PHP
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edited Jun 12 '14 at 13:51
jp2code
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What is the syntax rule for having trailing commas in tuple definitions?
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DuncanDuncan
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What is the Swift equivalent of isEqualToString in Objective-C?
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434
With Swift you don't need anymore to check the equality with isEqualToString
You can now use ...
How to query SOLR for empty fields?
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145
Try this:
?q=-id:["" TO *]
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How to include a quote in a raw Python string
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144
If you want to use double quotes in strings but not single quotes, you can just use single quot...