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Counting inversions in an array
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141
So here is O(n log n) solution in java.
long merge(int[] arr, int[] left, int[] right) {
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How to implement “select all” check box in HTML?
..."bar3"> Bar 3<br/>
<input type="checkbox" name="foo" value="bar4"> Bar 4<br/>
UPDATE:
The for each...in construct doesn't seem to work, at least in this case, in Safari 5 or Chrome 5. This code should work in all browsers:
function toggle(source) {
checkboxes = document.ge...
Is there a difference between using a dict literal and a dict constructor?
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answered Jul 7 '11 at 12:43
John La RooyJohn La Rooy
249k4646 gold badges326326 silver badges469469 bronze badges
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Why does the Visual Studio editor show dots in blank spaces?
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answered Jun 10 '09 at 3:34
user64417user64417
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Remove the cell highlight color of UITableView
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cell.selectionStyle = UITableViewCellSelectionStyleNone;
in Swift 4 updated
cell.selectionStyle = UITableViewCell.SelectionStyle.none
Or
cell.selectionStyle = .none
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How to save a list as numpy array in python?
...ctly create an array from a list as:
import numpy as np
a = np.array( [2,3,4] )
Or from a from a nested list in the same way:
import numpy as np
a = np.array( [[2,3,4], [3,4,5]] )
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Use a list of values to select rows from a pandas dataframe [duplicate]
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You can use isin method:
In [1]: df = pd.DataFrame({'A': [5,6,3,4], 'B': [1,2,3,5]})
In [2]: df
Out[2]:
A B
0 5 1
1 6 2
2 3 3
3 4 5
In [3]: df[df['A'].isin([3, 6])]
Out[3]:
A B
1 6 2
2 3 3
And to get the opposite use ~:
In [4]: df[~df['A'].isin([3, 6])]
Out[4]:
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Duplicate files copied (Android Studio 0.4.0) [duplicate]
...pcore and httpmime libraries from Apache. After update Android Studio to 0.4.0 I have this issue building my project:
2 Ans...
How to get the name of the calling method?
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Bryan Ash
4,01133 gold badges3434 silver badges5454 bronze badges
answered Feb 24 '11 at 4:25
DigitalRossDigita...
How to define hash tables in Bash?
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Bash 4
Bash 4 natively supports this feature. Make sure your script's hashbang is #!/usr/bin/env bash or #!/bin/bash so you don't end up using sh. Make sure you're either executing your script directly, or execute script with b...