nested-loops

问题 What is the proper way to parallelize a multi-dimensional embarrassingly parallel loop in OpenMP? The number of dimensions is known at compile-time, but which dimensions will be large is not. Any of them may be one, two, or a million. Surely I don't want N omp parallel 's for an N-dimensional loop... Thoughts: The problem is conceptually simple. Only the outermost 'large' loop needs to be parallelized, but the loop dimensions are unknown at compile-time and may change. Will dynamically

问题 Does every recursive function have an equivalent for loop? (Both achieve the same result). I have this recursive function: private static boolean recur(String word, int length) { if(length == 1 || length == 2) return false; if(length == 0) return true; if(words[length].contains(word.substring(0, length))) return recur(word.substring(length), word.length() - length); return recur(word, length-1); } Given that words is a Set[], and where words[i] = a set with words of length i. What am trying

问题 Does every recursive function have an equivalent for loop? (Both achieve the same result). I have this recursive function: private static boolean recur(String word, int length) { if(length == 1 || length == 2) return false; if(length == 0) return true; if(words[length].contains(word.substring(0, length))) return recur(word.substring(length), word.length() - length); return recur(word, length-1); } Given that words is a Set[], and where words[i] = a set with words of length i. What am trying

问题 I am trying to print the following using a nested loop in Java: 1 2 3 4 5 6 1 2 3 4 5 1 2 3 4 1 2 3 1 2 1 but it's coming out like the following: 1 2 3 4 5 6 2 3 4 5 6 3 4 5 6 4 5 6 5 6 6 Here is my code: for (int i = 1; i <= 6; i++) { for (int j = 1; j < i; j++) { System.out.print(" "); } for (int j = i; j <= 6; j++) { System.out.print(j + " "); } System.out.println(); } Any help would be appreciated. Thanks 回答1: int n = 7; for (int i = 1; i <= n; i++) { for (int j = 1; j < i; j++) { System

问题 I'm working on a Coldfusion project and I seem to be stuck. I am a newbie so I hope I don't get too much slack. The purpose of my project is to create a password list by using nested loops. I am to design a template that combines all words in the list "cold, fusion, dynamic" with all words on the list "bert, ernie, oscar" to produce a bulleted list of vaild passwords. This template should process two URL prarameters named List1 and List2. I must use two list loops nested within each other to

问题 I want to do something very simple in Django: Print a matrix as an HTML table, and add labels for the rows and columns. These are the variables in my view: matrix = np.array([ [101, 102, 103], [201, 202, 203], ]) colnames = ['Foo', 'Bar', 'Barf'] rownames = ['Spam', 'Eggs'] I want a to get a table that looks like this: Foo Bar Barf Spam 101 102 103 Eggs 201 202 203 My template code looks like this: <table> <tr> <th></th> {% for colname in colnames %} <th>{{ colname }}</th> {% endfor %} </tr>

问题 The advantage of approach 1 is a slightly smaller file size due to less text characters in the source code: int i, j; for (i = 0; i < numRows; i++) for (j = 0; j < numCols; j++) //<some code here> The advantage of approach 2 is the smaller scope of local variables. int i; for (i = 0; i < numRows; i++) { int j; for (j = 0; j < numCols; j++) //<some code here> } Even if the differences in optimizations are negligible in today's modern computers, which approach is considered "better" code? Edit

问题 Trying to learn F#, by solving some programming puzzles. I don't want to add too many details about the problem as I don't want to spoil the fun for others. Basically, the issue is to find all 4-uples { (i,j,k,l) | i ^ j ^ k ^ l != 0 } with no repetition (eg., (1,1,1,2) and (1,1,2,1) are the same and should be counted just once). I have found a O(n^3) approach which works, please see countImperative(a,b,c,d) below. But I also tried to refactor the code as to get rid of the nested for loops.

问题 I am trying to implement nested for loops using Terraform 0.12's new features in order to loop through AWS IAM users, each of which can have one or more policies attached. The variable used to represent this list is of type map(list(string)) and looks something like this: { "user 1" = [ "policy1", "policy2" ], "user 2" = [ "policy1" ] } Getting the list of users to create is easy enough via keys() , but since there is currently no mechanism for nesting looped resource creation in Terraform,

问题 I have created a functioning e-commerce platform where Members can buy songs. Everything works fine, But I would like to group all of my Orders in my Index Page by Month. Currently I am able to group each Album with its corresponding Artist, and each Ordered Song to its corresponding Album. But now I would like to group Orders by Month. How Can I Group Artists by the order_date in my Orders Table, So that everything is organized by Month? Ex. of what I've like to do Month 1 Orders Artist1