在c++中用于将大型二维数组转换为一维数组的内存分配

#include <iostream>

int main() {
    int rows = 3;
    int cols = 4;

    // 动态分配二维数组
    int** twoDArray = new int*[rows];
    for (int i = 0; i < rows; ++i) {
        twoDArray[i] = new int[cols];
    }

    // 初始化二维数组
    int count = 1;
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < cols; ++j) {
            twoDArray[i][j] = count++;
        }
    }

    // 将二维数组转换为一维数组
    int* oneDArray = new int[rows * cols];
    int index = 0;
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < cols; ++j) {
            oneDArray[index++] = twoDArray[i][j];
        }
    }

    // 使用一维数组进行操作
    for (int i = 0; i < rows * cols; ++i) {
        std::cout << oneDArray[i] << " ";
    }
    std::cout << std::endl;

    // 释放内存
    for (int i = 0; i < rows; ++i) {
        delete[] twoDArray[i];
    }
    delete[] twoDArray;
    delete[] oneDArray;

    return 0;
}