public int[] GetRandomSequence2(int total, int n)
{
//隨機總數組
int[] sequence = new int[total];
//取到的不重複數字的數組長度
int[] output = new int[n];
for (int i = 0; i < total; i++)
{
sequence[i] = i;
}
int end = total - 1;
for (int i = 0; i < n; i++)
{
//隨機一個數,每隨機一次,隨機區間-1
int num = Random.Range(0, end + 1);
output[i] = sequence[num];
//將區間最後一個數賦值到取到數上
sequence[num] = sequence[end];
end--;
//執行一次效果如:1,2,3,4,5 取到2
//則下次隨機區間變爲1,5,3,4;
}
return output;
}