要求
通过键盘输入二维数组的行和列，动态创建二维数组。实现下列函数功能。
1)动态创建二维数组。
unsigned char** new_array2d(unsigned int row, unsigned int column);
2)释放二维数组。
void delete_array2d(unsigned char** array2d, unsigned int row);
3)为二维数组随机赋值，每一个元素的值范围为0~255。
void set_array2d(unsigned char** array2d, unsigned int row, unsigned int column);
4)统计数组中的值分别为0255的个数，也就是0255这256个数每一个出现的个数。
unsigned int* histgram(unsigned char** array2d, unsigned int row, unsigned int column);//返回unsigned int[256]数组表示统计结果
5)打印数组。
void print_array1d(unsigned int array[],unsigned int n);//打印一维数组
void print_array2d(unsigned char** array2d, unsigned int row, unsigned int column);//打印二维数组
6)根据给定的数组的左上角坐标、高、宽，取出子数组，如图1所示
unsigned char** get_sub_array(unsigned char** array2d, unsigned int row_index, unsigned int column_index, unsigned int height, unsigned int width);
图1 子数组示意图
7)从所创建的二维数组中，按任意取出3x3的子数组（例如从位置(1,1)取3x3子数组），并将子数组的值转换为0-1值，即大于等于128的为1，小于128为0。
void gray_to_binary(unsigned char** array2d, unsigned int row, unsigned int column);
8)对（7）所获得的3x3的二维数组（如图2所示），设每一个元素按顺时针顺序标注为a0,a1,a2,a3,a4,a5,a6,a7,a8共9个元素。现作如下处理：
a)数组四周元素与中间元素作异或运算(两个元素值相同为0，不同为1)，即
a0 = a0 ^ a8; a1 = a1 ^ a8;……;a7 = a7 ^ a8;
b)四周元素与中间元素异或运算后，组成下列四种排列
a0，a1，a2，a3，a4，a5，a6，a7
a2，a3，a4，a5，a6，a7，a0，a1
a4，a5，a6，a7，a0，a1，a2，a3
a6，a7，a0，a1，a2，a3，a4，a5
将上面四种排列转换为十进制数，求这个四个十进制数的最小值。
unsigned int find_min_value(unsigned char** array2d)；
代码
#include <iostream>
#include <time.h>
#include <algorithm>
using namespace std;
unsigned char** new_array2d(unsigned int row, unsigned int column)
{
unsigned char** p = new unsigned char* [row];
for (int i = 0; i < column; i++) {
p[i] = new unsigned char[column];
}
return p;
// to do list
}
void delete_array2d(unsigned char** array2d, unsigned int row)
{
for (int i = 0; i < row; i++) {
delete[] array2d[i];
}
delete[] array2d;
// to do list
}
void set_array2d(unsigned char** array2d, unsigned int row, unsigned int column)
{
srand((unsigned)time(NULL));
for (int i = 0; i < row; i++) {
for (int j = 0; j < column; j++) {
array2d[i][j] = rand();
}
}
// to do list
}
unsigned int* histgram(unsigned char** array2d, unsigned int row, unsigned int column)
{
unsigned int* cb = new unsigned int [300];
memset(cb, 0, sizeof(unsigned int) * 256);
for (int i = 0; i < row; i++) {
for (int j = 0; j < column; j++) {
if (array2d[i][j] >= 0 && array2d[i][j] <= 255) {
cb[array2d[i][j]] ++;
}
}
}
return cb;
// to do list
}
void print_array1d(unsigned int* array1d, unsigned int n)
{
for (int i = 0; i < n; i++) {
printf("%u ", array1d[i]);
}printf("\n");
// to do list
}
void print_array2d(unsigned char** array2d, unsigned int row, unsigned int column)
{
for (int i = 0; i < row; i++) {
for (int j = 0; j < column; j++) {
printf("%u ", array2d[i][j]);
}
printf("\n");
}
// to do list
}
unsigned char** get_sub_array(unsigned char** array2d, unsigned int row_index, unsigned int column_index, unsigned int height, unsigned int width)
{
unsigned char** cb = new unsigned char* [30];
int ii = 0, jj = 0;
for (int i = row_index; i < row_index + height; i++, ii++) {
cb[ii] = new unsigned char[30];
for (int j = column_index; j < column_index + width; j++, jj++) {
printf("%u ", array2d[i][j]);
cb[ii][jj] = array2d[i][j];
}
printf("\n");
}
return cb;
//to do list
}
void gray_to_binary(unsigned char** array2d, unsigned int row, unsigned int column)
{
for (int i = 0; i < row; i++) {
for (int j = 0; j < column; j++) {
if (array2d[i][j] >= 128)//problem
printf("1 ");
else
printf("0 ");
}
printf("\n");
}
// to do list
}
unsigned int find_min_value(unsigned char** array2d)
{
unsigned int ans2[4];
unsigned int cb[3][3];
unsigned int cNum[9];
unsigned int ans[4];
memset(ans2, 0, sizeof(ans2));
for (int i = 0; i < 3; i++) {
//
for (int j = 0; j < 3; j++) {
cb[i][j] = array2d[i][j];
}
}
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (array2d[i][j] >= 128)
cb[i][j] = 1;
else
cb[i][j] = 0;
}
}
for (int i = 0; i < 3; i++) {
cNum[i] = cb[0][i];
}
cNum[3] = cb[1][2];
cNum[4] = cb[2][2];
cNum[5] = cb[2][1];
cNum[6] = cb[2][0];
cNum[7] = cb[1][0];
cNum[8] = cb[1][1];
for (int i = 0; i < 9; i++) {
cNum[i] ^= cNum[8];
}
ans[0] = cNum[0];
for (int i = 1; i < 8; i++) {
ans[0] = (ans[0] * 10) + cNum[i];
}
ans[1] = cNum[2];
for (int i = 3; i < 8; i++) {
ans[1] = ans[1] * 10 + cNum[i];
}
ans[1] = cNum[1] * 10 + cNum[1];
ans[2] = cNum[4];
for (int i = 5; i < 8; i++) {
ans[2] = ans[2] * 10 + cNum[i];
}
for (int i = 0; i < 4; i++) {
ans[2] = ans[2] * 10 + cNum[i];
}
ans[3] = cNum[6] * 10 + cNum[7];
for (int i = 0; i < 6; i++) {
ans[3] = ans[3] * 10 + cNum[i];
}
for (int i = 0; i < 8; i++) {
int kk = ans[0] % 10;
ans[0] /= 10;
ans2[0] = kk + ans2[0] * 2;
}
for (int i = 0; i < 8; i++) {
int kk = ans[1] % 10;
ans[1] /= 10;
ans2[1] = kk + ans2[1] * 2;
}
for (int i = 0; i < 8; i++) {
int kk = ans[2] % 10;
ans[2] /= 10;
ans2[2] = kk + ans2[2] * 2;
}
for (int i = 0; i < 8; i++) {
int kk = ans[3] % 10;
ans[3] /= 10;
ans2[3] = kk + ans2[3] * 2;
}
sort(ans2, ans2 + 4);
return ans2[0];
// to do list
}
int main()
{
unsigned int row = 0;
unsigned int column = 0;
cin >> row >> column;
unsigned char** array2d = new_array2d(row, column);
set_array2d(array2d, row, column);
cout << "Oringin array" << endl;
print_array2d(array2d, row, column);
unsigned int* hist = histgram(array2d, row, column);
cout << "Histgram" << endl;
print_array1d(hist, 256);
unsigned char** sub_array_2d = get_sub_array(array2d, 1, 1, 3, 3);//problem
cout << "Sub array" << endl;
print_array2d(sub_array_2d, 3, 3);//problem
gray_to_binary(sub_array_2d, 3, 3);//problem
cout << "Binary sub array" << endl;
print_array2d(sub_array_2d, 3, 3);
unsigned int min_value = find_min_value(sub_array_2d);
cout << "The min value is " << min_value << endl;
cout << "Now free memeory" << endl;
delete_array2d(array2d, row);
delete_array2d(sub_array_2d, 3);//problem
delete[] hist;
cin.get();
return(0);
}