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How to determine the longest increasing subsequence using dynamic programming?
... at element with index i. To compute DP[i] we look at all indices j < i and check both if DP[j] + 1 > DP[i] and array[j] < array[i] (we want it to be increasing). If this is true we can update the current optimum for DP[i]. To find the global optimum for the array you can take the maximum v...
Need for predictable random generator
I'm a web-game developer and I got a problem with random numbers. Let's say that a player has 20% chance to get a critical hit with his sword. That means, 1 out of 5 hits should be critical. The problem is I got very bad real life results — sometimes players get 3 crits in 5 hits, sometimes none i...
Modify tick label text
...()
# We need to draw the canvas, otherwise the labels won't be positioned and
# won't have values yet.
fig.canvas.draw()
labels = [item.get_text() for item in ax.get_xticklabels()]
labels[1] = 'Testing'
ax.set_xticklabels(labels)
plt.show()
To understand the reason why you need to jump thro...
Mutex example / tutorial? [closed]
I'm new to multithreading, and was trying to understand how mutexes work. Did a lot of Googling but it still left some doubts of how it works because I created my own program in which locking didn't work.
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Generate random password string with requirements in javascript
I want to generate a random string that has to have 5 letters from a-z and 3 numbers.
18 Answers
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Is there a ceiling equivalent of // operator in Python?
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There is no operator which divides with ceil. You need to import math and use math.ceil
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Why does Eclipse complain about @Override on interface methods?
...n Java 5.
Make sure that your IDE projects are setup to use a Java 6 JRE, and that the "source compatibility" is set to 1.6 or greater:
Open the Window > Preferences dialog
Browse to Java > Compiler.
There, set the "Compiler compliance level" to 1.6.
Remember that Eclipse can override th...
How to search and replace globally, starting from the cursor position and wrapping around the end of
When I search with the / Normal-mode command:
6 Answers
6
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Xcode duplicate/delete line
Coming from Eclipse and having been used to duplicate lines all the time, it's pretty strange finding out that Xcode has no such function. Or does it?
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image processing to improve tesseract OCR accuracy
...o convert documents into text. The quality of the documents ranges wildly, and I'm looking for tips on what sort of image processing might improve the results. I've noticed that text that is highly pixellated - for example that generated by fax machines - is especially difficult for tesseract to pr...