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What would cause an algorithm to have O(log n) complexity?
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Also note that this is the most concise way to denote the number in this range. Any reduction will lead to information loss, as a missing digit can be mapped to 10 other numbers. For example: 12* can be mapped to 120, 121, 122, …, 129.
2. How do you search for a number in (0, N - 1)?
Taking N ...
Output to the same line overwriting previous output?
...lf):
self.text = ''
def moveup(self, lines):
for _ in range(lines):
sys.stdout.write("\x1b[A")
def reprint(self, text):
# Clear previous text by overwritig non-spaces with spaces
self.moveup(self.text.count("\n"))
sys.stdout.write(re.sub(...
Why doesn't list have safe “get” method like dictionary?
...cept IndexError:
return default
def _test():
l = safelist(range(10))
print l.get(20, "oops")
if __name__ == "__main__":
_test()
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In Python, how do I create a string of n characters in one line of code?
...ii_lowercase
n = 10
string_val = "".join(choice(ascii_lowercase) for i in range(n))
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Adding values to a C# array
... try to access it's non existent indexes to set values, you'll get an OutOfRangeException as soon as you run the code. Arrays need to be initialized with the size you are going to use, they reserve all the space at the beginning, witch makes them very fast, but not possible for them to be resized.
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range() for floats
Is there a range() equivalent for floats in Python?
21 Answers
21
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Selecting the last value of a column
...iveSheet().getMaxRows();
var values = SpreadsheetApp.getActiveSheet().getRange(column + "1:" + column + lastRow).getValues();
for (; values[lastRow - 1] == "" && lastRow > 0; lastRow--) {}
return values[lastRow - 1];
}
Usage:
=lastValue("G")
EDIT:
In response to the comment a...
Memoization in Haskell?
...dex and nats in terms of index' and nats'.
index' t n is defined over the range [1..]. (Recall that index t is defined over the range [0..].) It works searches the tree by treating n as a string of bits, and reading through the bits in reverse. If the bit is 1, it takes the right-hand branch. I...
Read file from line 2 or skip header row
...ns the comma-delimited
strings on each line as a list"""
for _ in range(numberheaderlines):
yield map(str.strip, filehandle.readline().strip().split(','))
with open('coordinates.txt', 'r') as rh:
# Single header line
#print next(__readheader(rh))
# Multiple header line...
Image comparison - fast algorithm
...rithm
Computing the color histograms is straightforward -- just pick the range for your histogram buckets, and for each range, tally the number of pixels with a color in that range. For example, consider the "green" histogram, and suppose we choose 4 buckets for our histogram: 0-63, 64-127, 128-1...