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Finding duplicates in O(n) time and O(1) space
Input: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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In C, do braces act as a stack frame?
...ther auxiliary storage location, or be optimized away entirely.
So, the d array, in theory, could consume memory for the entire function. However, the compiler may optimize it away, or share its memory with other local variables whose usage lifetimes do not overlap.
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JavaScript, Node.js: is Array.forEach asynchronous?
I have a question regarding the native Array.forEach implementation of JavaScript: Does it behave asynchronously?
For example, if I call:
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What is “entropy and information gain”?
...ther than images but the principles should be the same.
//Loop over image array elements and count occurrences of each possible
//pixel to pixel difference value. Store these values in prob_array
for j = 0, ysize-1 do $
for i = 0, xsize-2 do begin
diff = array(i+1,j) - array(i,j)
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“var” or no “var” in JavaScript's “for-in” loop?
...bsolutely sure that that's what you want to do. For iterating through real arrays (which is pretty common), you should always use a loop with a numeric index:
for (var i = 0; i < array.length; ++i) {
var element = array[i];
// ...
}
Iterating through a plain array with "for ... in" can hav...
Why aren't variable-length arrays part of the C++ standard?
...th those people that seem to agree that having to create a potential large array on the stack, which usually has only little space available, isn't good. The argument is, if you know the size beforehand, you can use a static array. And if you don't know the size beforehand, you will write unsafe cod...
How to initialize List object in Java?
...All Known Implementing Classes:
AbstractList, AbstractSequentialList, ArrayList, AttributeList, CopyOnWriteArrayList, LinkedList, RoleList, RoleUnresolvedList, Stack, Vector
Those can be instantiated. Use their links to know more about them, I.E: to know which fits better your needs.
The 3 m...
Using usort in php with a class private function
...function merchantSort($a,$b) {
return ...// the sort
}
And use an array for the second parameter:
$array = $this->someThingThatReturnAnArray();
usort($array, array('ClassName','merchantSort'));
share
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How to search for a string in cell array in MATLAB?
Let's say I have the cell array
8 Answers
8
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Can I initialize a C# attribute with an array or other variable number of arguments?
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Attributes will take an array. Though if you control the attribute, you can also use params instead (which is nicer to consumers, IMO):
class MyCustomAttribute : Attribute {
public int[] Values { get; set; }
public MyCustomAttribute(params...