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Extracting bits with a single multiplication
...turns uninteresting bits to zeros. In the above case, your mask would be 00100100 and the result 00a00b00.
Now the hard part: turning that into ab.......
A multiplication is a bunch of shift-and-add operations. The key is to allow overflow to "shift away" the bits we don't need and put the ones w...
How to find the kth largest element in an unsorted array of length n in O(n)?
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31 Answers
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Frequency table for a single variable
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153
Maybe .value_counts()?
>>> import pandas
>>> my_series = pandas.Series([1,2...
Returning a boolean from a Bash function
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Java rounding up to an int using Math.ceil
Why does it still return 4? 157/32 = 4.90625 , I need to round up, I've looked around and this seems to be the right method.
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What does android:layout_weight mean?
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Reduce, fold or scan (Left/Right)?
...hrough the first argument res of our binary operator minus:
val xs = List(1, 2, 3, 4)
def minus(res: Int, x: Int) = {
println(s"op: $res - $x = ${res - x}")
res - x
}
xs.reduceLeft(minus)
// op: 1 - 2 = -1
// op: -1 - 3 = -4 // de-cumulates value -1 in *first* operator arg `res`
// op: -4 - ...