题目参见 PAT (Basic Level) Practice （中文） 1008 数组循环右移M个元素
核心函数
void reverse(int a[], int n, int begin, int end)
{
int temp = 0;
if (begin >= end)
return;
for (int i = begin; i <=(begin + end)/2; i++)
{
temp = a[i];
a[i] = a[end – i+begin];
a[end – i + begin] = temp;
}
}
int n, m,a[max];
cin >> n >> m;
m = m%n;//缩小到最小次数
for (int i = 0; i < n; i++)
{
cin >> a[i];
}
reverse(a, n, 0, n – 1 – m);
reverse(a, n, n-m, n-1);
reverse(a, n, 0, n-1);
for (int i = 0; i < n-1; i++)
{
cout << a[i] << ‘ ‘;
}
cout << a[n – 1];