用C整数的三维阵列++ [英] Three dimensional arrays of integers in C++

问题描述

我想找出落实在C ++中的整数的三维阵列，使用指针算术/动态内存分配，或交替使用 STL 技术，如安全的方法向量。

I would like to find out safe ways of implementing three dimensional arrays of integers in C++, using pointer arithmetic / dynamic memory allocation, or, alternatively using STL techniques such as vectors.

基本上我想我整数数组尺寸如下：

Essentially I want my integer array dimensions to look like:

[ x ][ y ][ z ]

x和y的范围20-6000
z被公知和等于4。

x and y are in the range 20-6000 z is known and equals 4.

推荐答案

看一看升压多维数组库。这里有一个例子（改编自Boost文档）：

Have a look at the Boost multi-dimensional array library. Here's an example (adapted from the Boost documentation):

#include "boost/multi_array.hpp"

int main() {
  // Create a 3D array that is 20 x 30 x 4
  int x = 20;
  int y = 30;
  int z = 4;

  typedef boost::multi_array<int, 3> array_type;
  typedef array_type::index index;
  array_type my_array(boost::extents[x][y][z]);

  // Assign values to the elements
  int values = 0;
  for (index i = 0; i != x; ++i) {
    for (index j = 0; j != y; ++j) {
      for (index k = 0; k != z; ++k) {
        my_array[i][j][k] = values++;
      }
    }
  }
}

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