如何用动态数组删除二维数组c++中的列？

#include <iostream>

void deleteColumn(int**& array, int numRows, int& numCols, int colIndex) {
    // 创建一个新的动态数组，大小为原始二维数组的列数减去要删除的列数
    int** newArray = new int*[numRows];
    for (int i = 0; i < numRows; i++) {
        newArray[i] = new int[numCols - 1];
    }
    
    // 复制不需要删除的元素到新的数组中
    for (int i = 0; i < numRows; i++) {
        int newIndex = 0;
        for (int j = 0; j < numCols; j++) {
            if (j != colIndex) {
                newArray[i][newIndex] = array[i][j];
                newIndex++;
            }
        }
    }
    
    // 删除原始二维数组，并将其指针指向新创建的数组
    for (int i = 0; i < numRows; i++) {
        delete[] array[i];
    }
    delete[] array;
    array = newArray;
    
    // 更新列数
    numCols--;
}

int main() {
    int numRows = 3;
    int numCols = 4;
    
    // 创建原始二维数组并赋值
    int** array = new int*[numRows];
    for (int i = 0; i < numRows; i++) {
        array[i] = new int[numCols];
        for (int j = 0; j < numCols; j++) {
            array[i][j] = i * numCols + j;
        }
    }
    
    // 删除第二列
    int colIndex = 1;
    deleteColumn(array, numRows, numCols, colIndex);
    
    // 打印新的二维数组
    for (int i = 0; i < numRows; i++) {
        for (int j = 0; j < numCols; j++) {
            std::cout << array[i][j] << " ";
        }
        std::cout << std::endl;
    }
    
    // 释放内存
    for (int i = 0; i < numRows; i++) {
        delete[] array[i];
    }
    delete[] array;
    
    return 0;
}