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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
... the problem to solving the system of equations
a1 + a2 + ... + ak = b1
a12 + a22 + ... + ak2 = b2
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a1k + a2k + ... + akk = bk
Using Newton's identities, knowing bi allows to compute
c1 = a1 + a2 + ... ak
c2 = a1a2 + a1a3 + ... + ak-1ak
...
ck = a1a2 ... ak
If you expand the polynomial ...
Meaning of Git checkout double dashes
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answered Nov 10 '12 at 11:09
Dietrich EppDietrich Epp
174k3131 gold badges300300 silver badges375375 bronze badges
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How to expand/collapse a diff sections in Vimdiff?
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laurent
76.1k5959 gold badges241241 silver badges373373 bronze badges
answered Mar 13 '11 at 21:41
ninjaljninjalj
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Getting exact error type in from DbValidationException
...est way I've found to get instant insight into these errors.
For Visual 2012+ users who care only about the first error and might not have a catch block, you can even do:
((System.Data.Entity.Validation.DbEntityValidationException)$exception).EntityValidationErrors.First().ValidationErrors.First()...
Find what filetype is loaded in vim
... :se ft? - I win. ;)
– sjas
Jul 28 '12 at 10:57
40
:se ft? I won!
– Fábio ...
How to set default values in Rails?
.../1746246/483520
– Nolan Amy
Jul 19 '12 at 19:29
9
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What's Go's equivalent of argv[0]?
...66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.9512V9.17788Z\"/\u003e\u003cpath d=\"M32.492 10.1419C32.492 12.6954 34.1182 14.0484 37.0451 14.0484C39.9723 14.0484 41.5985 12.6954...
JavaScript - Get Portion of URL Path
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Aug 4 '11 at 16:07
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How to reference the initial commit?
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answered Jun 17 '09 at 12:54
Robert MunteanuRobert Munteanu
61.9k3030 gold badges185185 silver badges268268 bronze badges
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OSError: [Errno 2] No such file or directory while using python subprocess in Django
...see link in the answer.
– valid
Nov 12 '14 at 4:01
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