multidimensional-array

问题 I want to build a method in Java for sorting an array according to values in more than a given column. Let me explain that with an example (matrix array): int matrix[][] = { {0,2,432},{1,1,282},{2,2,456},{3,4,191},{4,5,293}, {5,2,475},{6,2,491},{7,5,171},{8,5,134},{9,3,354}}; I need to sort every triplet according to the second position in decreasing order. After that, I need to sort the triplet in increasing order according to the third position. The code that I'm using for that is: import

问题 I want to build a method in Java for sorting an array according to values in more than a given column. Let me explain that with an example (matrix array): int matrix[][] = { {0,2,432},{1,1,282},{2,2,456},{3,4,191},{4,5,293}, {5,2,475},{6,2,491},{7,5,171},{8,5,134},{9,3,354}}; I need to sort every triplet according to the second position in decreasing order. After that, I need to sort the triplet in increasing order according to the third position. The code that I'm using for that is: import

问题 I want to build a method in Java for sorting an array according to values in more than a given column. Let me explain that with an example (matrix array): int matrix[][] = { {0,2,432},{1,1,282},{2,2,456},{3,4,191},{4,5,293}, {5,2,475},{6,2,491},{7,5,171},{8,5,134},{9,3,354}}; I need to sort every triplet according to the second position in decreasing order. After that, I need to sort the triplet in increasing order according to the third position. The code that I'm using for that is: import

问题 I have two 2D arrays of integers of the same dimension that I need to compare. I am going to explain what I need with an example where Sjm1 is the "original" array and the Sjm2 array has the same values as Sjm1 but the values of each column are ordered in increasing order (i.e. "0" is the min value of Sjm1 in column 0 so Sjm2[0][0]=0 ; then "70" is the next min value of Sjm1 in column 0 ⇒ Sjm2[1][0]=70 ; and so on). I have a method to sort a "Sjm1" array to "Sjm2". Now I need to build an

问题 I have two 2D arrays of integers of the same dimension that I need to compare. I am going to explain what I need with an example where Sjm1 is the "original" array and the Sjm2 array has the same values as Sjm1 but the values of each column are ordered in increasing order (i.e. "0" is the min value of Sjm1 in column 0 so Sjm2[0][0]=0 ; then "70" is the next min value of Sjm1 in column 0 ⇒ Sjm2[1][0]=70 ; and so on). I have a method to sort a "Sjm1" array to "Sjm2". Now I need to build an

问题 Problem: I have 2d array which is filled with numbers. I have to output it in a way that it shows: "*" between neighbours with different values and with " " if values are the same. Example: ********* *1 1*3*4* ***** * * *2 2*3*4* ********* I have tried many things like creating another array with [Nx2][Mx2] size or System.out.format , but in the end it's never formatted the way I like. Any suggestions how can I solve this? private static void changeColumn(int[][] secondLayerArr, int n, int m)

问题 So for a matrix, we have methods like numpy.flatten() np.array([[1,2,3],[4,5,6],[7,8,9]]).flatten() gives [1,2,3,4,5,6,7,8,9] what if I wanted to get from np.array([[1,2,3],[4,5,6],7]) to [1,2,3,4,5,6,7] ? Is there an existing function that performs something like that? 回答1: With uneven lists, the array is a object dtype, (and 1d, so flatten doesn't change it) In [96]: arr=np.array([[1,2,3],[4,5,6],7]) In [97]: arr Out[97]: array([[1, 2, 3], [4, 5, 6], 7], dtype=object) In [98]: arr.sum() ...

问题 I've been successfully trying to pass a 2D-array to a function, see code below. What I don't get: Why does my "method C" (see code below) not work? What's the difference between &table[0][0] and &table ? Both of them point to the same memory address. The former works as argument passed to my function, the latter doesn't, error message: "no known conversion from 'int (*)[3][2]' to 'int *' for 1st argument void print_table(int *table, const int ROWS, const int COLUMNS) Thanks in advance! Alex

问题 it's my first question here. My PHP is sort of ok and I duplicate/modify code to get what I want usually but I'm very lost here and not sure where to get the info I need MAIN ISSUE I don't know what to call to get things inside ARRAY What I need is inside that Array of Extras. I've duplicated & modified everything I can to get these values but can't seem to figure it out. Any help is really appreciated. The registration, milage, condition shown is the output of $autoshowroom_portfolio

问题 I want to pass a 2D array from Python to a C++ function and then return an array of the same type, same dimensions, to Python. I am aware this question has already been asked several times, but I haven't been able to find a relevant answer to my question. For my problem, I must use a double pointer array and have the function returning a double pointer array (not void as many examples show). My C++ function is: #include <stdio.h> #include <stdlib.h> extern "C" double** dot(double **a, int m,