You are given an integer array nums.
A subsequence is stable if it does not contain three consecutive elements with the same parity when the subsequence is read in order (i.e., consecutive inside the subsequence).
\n\nReturn the number of stable subsequences.
\n\nSince the answer may be too large, return it modulo 109 + 7.
\n
Example 1:
\n\nInput: nums = [1,3,5]
\n\nOutput: 6
\n\nExplanation:
\n\n[1], [3], [5], [1, 3], [1, 5], and [3, 5].[1, 3, 5] is not stable because it contains three consecutive odd numbers. Thus, the answer is 6.Example 2:
\n\nInput: nums = [2,3,4,2]
\n\nOutput: 14
\n\nExplanation:
\n\n[2, 4, 2], which contains three consecutive even numbers.\n
Constraints:
\n\n1 <= nums.length <= 1051 <= nums[i] <= 105给你一个整数数组 nums。
如果一个 子序列 中 不存在连续三个 元素奇偶性相同（仅考虑该子序列内），则称该子序列为稳定子序列 。
\n\n请返回所有稳定子序列的数量。
\n\n由于结果可能非常大，请将答案对 109 + 7 取余数后返回。
子序列 是一个从数组中通过删除某些元素（或不删除任何元素），并保持剩余元素相对顺序不变的 非空 数组。
\n\n\n\n
示例 1：
\n\n输入： nums = [1,3,5]
\n\n输出： 6
\n\n解释：
\n\n[1], [3], [5], [1, 3], [1, 5], 和 [3, 5]。[1, 3, 5] 不稳定，因为它包含三个连续的奇数。因此答案是 6。示例 2：
\n\n输入： nums = [2,3,4,2]
\n\n输出： 14
\n\n解释：
\n\n[2, 4, 2]，因为它包含三个连续的偶数。\n\n
提示：
\n\n1 <= nums.length <= 1051 <= nums[i] <= 105count < 2), or extend with different parity (reset count = 1)."
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