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Fast permutation -> number -> permutation mapping algorithms
... h[k] w[k]
0 1 1
1 2 2
2 3 6
3 4 24
... ... ...
n-1 n n!
(The general relation w[k-1] = k! is easily proved by induction.)
The number we get from converting our sequence will then be the sum of s[k] * w[k], with k running from 0 to n-1. Here s[...
Calculate difference between two dates (number of days)?
... Selim Yildiz
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answered Aug 27 '15 at 3:33
DarrenDarren
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Execute raw SQL using Doctrine 2
...ew Meng
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php var_dump() vs print_r()
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edited Jun 24 '19 at 10:38
Script47
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Youtube iframe wmode issue
...... any ideas ?
– danfromisrael
Nov 24 '10 at 13:10
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How do I sort one vector based on values of another
...ance.
– thelatemail
Sep 10 '15 at 1:24
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@thelatemail I agree. Stop the insanity and downvote thi...
Rounding a double to turn it into an int (java)
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What is the return type of the round() method in the snippet?
If this is the Math.round() met...
AppSettings get value from .config file
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AdamAdam
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TypeScript, Looping through a dictionary
...s is perfect
– Piyush Choudhary
Apr 24 at 11:40
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Is there a way to quickly find files in Visual Studio 2010?
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ChrisChris
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