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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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How many files can I put in a directory?
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21 Answers
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pyplot scatter plot marker size
...d the output they produce.
# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quickly. If instead we have
# doubling the area of markers
x = [0,2,4,6,8,10]
y = [0]*len(...
Calculate the date yesterday in JavaScript
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18 Answers
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Time complexity of Sieve of Eratosthenes algorithm
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Your n/2 + n/3 + n/5 + … n/97 is not O(n), because the number of terms is not constant. [Ed...
How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
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17 Answers
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Generate colors between red and green for a power meter?
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19 Answers
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How to round up a number in Javascript?
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316
/**
* @param num The number to round
* @param precision The number of decimal places to prese...
Can I get JSON to load into an OrderedDict?
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619
Yes, you can. By specifying the object_pairs_hook argument to JSONDecoder. In fact, this is t...
What is a plain English explanation of “Big O” notation?
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41 Answers
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