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Format an Integer using Java String Format
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How to access array elements in a Django template?
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Remember that the dot notation in a Django template is used for four different notations in Py...
How to check if a database exists in SQL Server?
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edited Jun 8 '12 at 13:50
SteveC
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answer...
RegEx: Smallest possible match or nongreedy match
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form_for but to post to a different action
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answered Mar 16 '11 at 2:43
AustinAustin
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How to efficiently compare two unordered lists (not sets) in Python?
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O(n): The Counter() method is best (if your objects are hashable):
def compare(s, t):
retu...
Calculate the median of a billion numbers
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Ah, my brain has just kicked into gear, I have a sensible suggestion now. Probably too late if t...
Removing multiple keys from a dictionary safely
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answered Jan 24 '12 at 23:20
GlaslosGlaslos
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Replace specific characters within strings
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With a regular expression and the function gsub():
group <- c("12357e", "12575e", "197e18", "e18947")
group
[1] "12357e" "12575e" "197e18" "e18947"
gsub("e", "", group)
[1] "12357" "12575" "19718" "18947"
What gsub does here is to replace each occurrence of "e" with an empty string "".
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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...