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Given an array of numbers, return array of products of all other numbers (no division)
... 1, a[0], a[0]*a[1], a[0]*a[1]*a[2], }
{ a[1]*a[2]*a[3], a[2]*a[3], a[3], 1, }
Both of which can be done in O(n) by starting at the left and right edges respectively.
Then multiplying the two arrays element by element gives the required result
My...
How to round a number to significant figures in Python
...
You can use negative numbers to round integers:
>>> round(1234, -3)
1000.0
Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.0232)...
Replace only some groups with Regex
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315
A good idea could be to encapsulate everything inside groups, no matter if need to identify th...
Scala 2.8 breakOut
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325
The answer is found on the definition of map:
def map[B, That](f : (A) => B)(implicit bf :...
PowerShell: Store Entire Text File Contents in Variable
...ldsmanojlds
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Is APC compatible with PHP 5.4 or PHP 5.5?
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163
+500
Zend OPC...
Why isn't String.Empty a constant?
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edited Feb 3 '09 at 17:31
answered Feb 3 '09 at 17:24
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Calling clojure from java
...n."
[n k]
(binomial n k))
(defn -main []
(println (str "(binomial 5 3): " (binomial 5 3)))
(println (str "(binomial 10042 111): " (binomial 10042 111)))
)
If you run it, you should see something like:
(binomial 5 3): 10
(binomial 10042 111): 49068389575068144946633777...
And here's a J...
How to read and write excel file
I want to read and write an Excel file from Java with 3 columns and N rows, printing one string in each cell. Can anyone give me simple code snippet for this? Do I need to use any external lib or does Java have built-in support for it?
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