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How to find all combinations of coins when given some dollar value

...r any other convenient computer algebra system) to compute the answer for 10^10^6 dollars in a couple seconds in three lines of code. (And this was long enough ago that that’s a couple of seconds on a 75Mhz Pentium...) sh...
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What is the preferred/idiomatic way to insert into a map?

... | edited Nov 26 '10 at 18:37 user229044♦ 202k3535 gold badges298298 silver badges309309 bronze badges ...
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Change Active Menu Item on Page Scroll?

... 207 It's done by binding to the scroll event of the container (usually window). Quick example: //...
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How to extract text from a string using sed?

... The pattern \d might not be supported by your sed. Try [0-9] or [[:digit:]] instead. To only print the actual match (not the entire matching line), use a substitution. sed -n 's/.*\([0-9][0-9]*G[0-9][0-9]*\).*/\1/p' ...
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一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术

...本,相反。 为什么我的manifest明明指明 name="Microsoft.VC80.DebugCRT" version="8.0.50608.0", 但是用depends.exe工具却发现引用的是8.00.50727.42呢? 因为在C:/WINDOWS/WinSxS/Policies下,有publisher configuration file也叫policy文件,如8.0.50727.42.policy文件...
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C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术

...ND sab[2]; /*用于定义数组的维数和下标的起始值*/   sab[0].cElements = 2;   sab[0].lLbound = 0;   sab[1].cElements = 2;   sab[1].lLbound = 0;   /*创建一个2*2的类型为long的二维数组*/   SAFEARRAY* psa = SafeArrayCreate(vt, sizeof(sab)/sizeof(SAF...
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Split (explode) pandas dataframe string entry to separate rows

... for _, row in a.iterrows()]).reset_index() Out[55]: index 0 0 a 1 1 b 1 2 c 1 3 d 2 4 e 2 5 f 2 Then you just have to rename the columns share | impr...
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C++ performance challenge: integer to std::string conversion

... #include <string> const char digit_pairs[201] = { "00010203040506070809" "10111213141516171819" "20212223242526272829" "30313233343536373839" "40414243444546474849" "50515253545556575859" "60616263646566676869" "70717273747576777879" "80818283848586...
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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?

...conds with'%Q tho. – Mini John Feb 10 '15 at 2:13 3 To follow up on @TheMiniJohn's answer. It loo...
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Setting different color for each series in scatter plot on matplotlib

... 280 I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array ea...