jagged-arrays

问题 Say I have an array of strings that look like: {{"blue", "red"}, {"1", "2", 3"}, {"dog","cat", "fish", "bird"}} I want to print the combinations of the arrays: blue 1 dog blue 1 cat ... ... red 3 bird However I want the jagged array to have rows and column that are user specified. How can I create a similar approach but in a dynamic and iterative way? Also I'm working with arrays and not ArrayList because as a beginner I want to see what I can do with arrays before learning ArrayList. My code

问题 I am trying to save a DataTable into an excel sheet.. my code is like this.. Excel.Range range = xlWorkSheet.get_Range("A2"); range = range.get_Resize(dtExcel.Rows.Count, dtExcel.Columns.Count); object[,] rng1 = new object[dtExcel.Rows.Count, dtExcel.Columns.Count]; Excel range requires range value as array[,] but I have the DataTable as jagged array[][]. object[][] rng2 = dtExcel.AsEnumerable().Select(x => x.ItemArray).ToArray(); Is there any built-in function to directly convert the jagged

问题 Most of the programming books I have ever read, have the following line: "X language does not support true multidimensional arrays, but you can simulate (approximate) them with arrays of arrays." Since most of my experience has been with C-based languages, i.e. C++, Java, JavaScript, php, etc., I'm not sure of what a "true" multidimensional array is. What is the definition of a true multidimensional array and what languages support it? Also, please show an example of a true multidimensional

问题 I'm trying to create a permutation of a multidimensional array in classic asp (vbscript) and I'm seriously stuck. I've tried several functions of my own and also tried copying several php versions over, but I often end up with something that either goes into a buffer overflow / infinite recursion or I get results that are more like a combination than a permutation, if I understand the differences correctly. Lets say it's for a shirt. The shirt can have colors, sizes, and styles. (The actual

问题 Im having two jagged lists. First one: List<List<string>> firstList = new List<List<string>>(); { dd ff } { dd ff } { dd ff } Second one: List<List<string>> secondList = new List<List<string>>(); { gg hh } { gg uu } { hh uu } Im having a problem with combining both lists into one like this one: { dd ff gg hh } { dd ff gg uu } { dd ff hh uu } Any Concatenation attempt resulted in just adding secondList elements like another firstList rows like this: { dd ff } { dd ff } { dd ff } { gg hh } { gg

问题 A simple question about the C programming language (ANSI-C): Are the multi-dimensional arrays in C jagged? I mean - are we talking about "array of arrays" (one array of pointers to other addresses in the memory) , or this is just "long one-dimensional array" (which is stored sequentially in the memory)? What that bothers me is that I'm kinda sure that: matrix[i][j] is equivalent to * ( * (matrix + i) + j) 回答1: A multidimensional array in C is contiguous. The following: int m[4][5]; consists

问题 I have the CSV file opened, but I can't figure out how to put the resultant array from splitting the line into another array. I have the following code currently, hopefully it gives more of an idea of what I'm meaning: private void ReadFileToArray(StreamReader file) { int i = 0; string[][] FP_GamesArray; while (!file.EndOfStream) { string line = file.ReadLine(); if (!String.IsNullOrWhiteSpace(line)) { string[] values = line.Split(','); MessageBox.Show(values.ToString()); FP_GamesArray[i] =

问题 hello i will much apreciate any help. ok let's see, first i have declare a jagged array like this and the next code int n=1, m=3,p=0; int[][] jag_array =new[n]; now my jagged array will have 1 array inside, next y have to fill the array like this: car=2; do { jag_array[p]= new double[car]; for (int t = 0; t < carac; t++) { jag_array[p][t] = variableX; } p=p+1 } while(p==0) now my jagged array looks like this(also insert some data for this example): jag_array[0][0]=4 jag_array[0][1]=2 now my

问题 How can you create a 2D array,say, arr[][] with 5 rows and each row has a variable number of columns in it? possibly arr[5][] with 1st row arr[0][] with 4 columns 2nd row arr[1][] with 5 columns and so on? I wouldn't mind a STL vector solution but I don't know vectors very well yet. 回答1: With C++11, you can do it easily with vectors (line breakes added for readability): std::vector< std::vector <int > > arr = { {1,2,3}, {4,5}, {6,7,8,9,0} }; If you don't have a C++11 compiler, it works the

问题 I have a jagged Array String[][] . Now I need to find the array with a particular value in String[n][0] what i have a the moment is a simple foreach foo in bar{ if(foo[0]==needle){ return foo; } } As you may see this is very slow for obvious reasons. I'm new to C# and just saw the indexOf, but how can i use indexOf in a jagged array? Another way i tought of is Sorting the Array by String[n][0] , going to the record in the middle, check if my value is larger or bigger, jump in the half of the