array

Let’s call an array t dominated by value v in the next situation. At first, array t should have at least 2 elements. Now, let’s calculate number of occurrences of each number num in t and define it as occ(num). Then t is dominated (by v) if (and only if) occ(v)>occ(v′) for any other number v′. For example, arrays [1,2,3,4,5,2], [11,11] and [3,2,3,2,3] are dominated (by 2, 11 and 3 respectevitely) but arrays [3], [1,2] and [3,3,2,2,1]are not. Small remark: since any array can be dominated only by one number, we can not specify this number and just say that array is either dominated or not. You

Dominated Subarray[codeforces 1257C] CF—1257C（Dominated Subarray） 题目 输入 输出 题目大意 样例输入 样例输出 CF—1257C（Dominated Subarray） codeforces题目链接 题目 Let’s call an array t dominated by value v in the next situation. At first, array t should have at least 2 elements. Now, let’s calculate number of occurrences of each number num in t and define it as occ(num). Then t is dominated (by v) if (and only if) occ(v)>occ(v′) for any other number v′. For example, arrays [1,2,3,4,5,2], [11,11] and [3,2,3,2,3] are dominated (by 2, 11 and 3 respectevitely) but arrays [[3]], [1,2] and [3,3,2,2,1] are not. Small remark:

C. Dominated Subarray Let’s call an array t dominated by value v in the next situation. At first, array t should have at least 2 elements. Now, let’s calculate number of occurrences of each number num in t and define it as occ(num). Then t is dominated (by v) if (and only if) occ(v)>occ(v′) for any other number v′. For example, arrays [1,2,3,4,5,2], [11,11] and [3,2,3,2,3] are dominated (by 2, 11 and 3 respectevitely) but arrays [3], [1,2] and [3,3,2,2,1] are not. Small remark: since any array can be dominated only by one number, we can not specify this number and just say that array is either

【CodeForces 1257C --- Dominated Subarray】 Description Let’s call an array t dominated by value v in the next situation. At first, array t should have at least 2 elements. Now, let’s calculate number of occurrences of each number num in t and define it as occ(num). Then t is dominated (by v) if (and only if) occ(v)>occ(v′) for any other number v′. For example, arrays [1,2,3,4,5,2], [11,11] and [3,2,3,2,3] are dominated (by 2, 11 and 3 respectevitely) but arrays [3], [1,2] and [3,3,2,2,1] are not. Small remark: since any array can be dominated only by one number, we can not specify this number

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is it legal to cast a pointer to the first element of an array to a pointer to the entire array? template<typename T, size_t N> void whatever(T(&)[N]) { std::cout << N << '\n'; } int main() { int a[10]; int * p = a; whatever(*(int(*)[10])(p)); // <-- legal? } This prints 10 on my compiler, but I'm not sure if the C++ standard allows it. 回答1: No, it's not legal(as in it's Undefined Behavior). A pointer to the whole array is &a not p . Basically, you're casting one pointer to another. The standard describes all the allowed conversions and this

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am working on a feature that checks if external events collide with internal events (in a calendar app). The process looks like this: My application creates an array of possible events (called $internalEvents ) I source external events from calendars such as Google Calendar, iCloud, etc. (called $externalEvents ). These are existing events with the type busy . Now I have to check if there is any kind of conflict regarding internal and external events. I tried something as you can see below but this is by far not correct or bulletproof. I

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm having trouble using the IFS to convert my string into an array. Here is what I have as my string: "Jun01 Jun02 Jun03 Jun04 Jun05 ..." #in that format, separated by spaces And here is the code I have tried: IFS=" " #set it to space character DATES_ARRAY=($DATES_STRING) #from above echo ${DATES_ARRAY[0]} #output is empty However when I remove the IFS line it works. But I used a few lines to print out its default ASCII value and I got '32' which means 'Space' character. Being an OCD programmer I'd like to set it myself just to be safe... I

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So I have been working with PDO for a couple of months now, however I have come to a hitch. I want to store the contents of a specified database into an array, grouped by their primary keys. (Instead of the useless way PDO fetchAll() organises them). My current code: $DownloadsPDO = $database->dbh->prepare("SELECT * FROM `downloads`"); $DownloadsArray = $DownloadsPDO->execute(); $DownloadsArray = $DownloadsPDO->fetchAll(); Which then outputs: Array ( [0] => Array ( [id] => 0 [0] => 0 [path] => /xx-xx/testfile.zip [1] => /xx-xx/testfile.zip

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Having an array of strings how can I update it so its elements are sorted by its length. I was trying string[] arr = {"aa","ss","a","abc"}; arr = arr.OrderBy(aux => aux.Length); So, I would get a,aa,ss,abc , but it says cannot implicitly convert type 'system.linq.iorderedenumerable to string[]' So, I was doing foreach (string s in arr.OrderBy(str => str.Length)) { // } Is there other way to do this? 回答1: Since arr is an array, you can use the convenient Array.Sort method: Array.Sort(arr, (x, y) => x.Length.CompareTo(y.Length)); foreach

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm learning lodash. Is it possible to use lodash to find a substring in an array of strings? var myArray = [ 'I like oranges and apples', 'I hate banana and grapes', 'I find mango ok', 'another array item about fruit' ] is it possible to confirm if the word 'oranges' is in my array? I've tried _.includes, _.some, _.indexOf but they all failed as they look at the full string, not a substring 回答1: You can easily construct an iteratee for some() using lodash's higher-order functions. For example: _.some(myArray, _.unary(_.partialRight(_