class Solution {
public:
vector<double> dicesProbability(int n) {
}
};
剑指 Offer 60. n个骰子的点数
把n个骰子扔在地上,所有骰子朝上一面的点数之和为s。输入n,打印出s的所有可能的值出现的概率。
你需要用一个浮点数数组返回答案,其中第 i 个元素代表这 n 个骰子所能掷出的点数集合中第 i 小的那个的概率。
示例 1:
输入: 1 输出: [0.16667,0.16667,0.16667,0.16667,0.16667,0.16667]
示例 2:
输入: 2 输出: [0.02778,0.05556,0.08333,0.11111,0.13889,0.16667,0.13889,0.11111,0.08333,0.05556,0.02778]
限制:
1 <= n <= 11
原站题解
python3 解法, 执行用时: 32 ms, 内存消耗: 14.9 MB, 提交时间: 2022-11-13 14:09:15
class Solution: def dicesProbability(self, n: int) -> List[float]: dp = [1 / 6] * 6 for i in range(2, n + 1): tmp = [0] * (5 * i + 1) for j in range(len(dp)): for k in range(6): tmp[j + k] += dp[j] / 6 dp = tmp return dp