数据结构练习（40）数对之差的最大值

#include <iostream>
using namespace std;

int MaxDelta(int data[], unsigned length)
{
if (data == nullptr || length <= 1)
return 0;

int delta = data[0] - data[1];
int maxvalue = data[0];

for (int i = 1; i < length - 1; ++i)
{
if (data[i] > maxvalue)
maxvalue = data[i];

if (maxvalue - data[i+1] > delta)
delta = maxvalue - data[i+1];
}
return delta;
}

int main()
{
int data[] = {2, 4, 1, 16, 7, 5, 11, 9};
int delta = MaxDelta(data, 8);
cout << delta << endl;
return 0;
}