题目：

题解：

class Solution:
    def find132pattern(self, nums: List[int]) -> bool:
        candidate_i, candidate_j = [-nums[0]], [-nums[0]]

        for v in nums[1:]:
            idx_i = bisect.bisect_right(candidate_i, -v)
            idx_j = bisect.bisect_left(candidate_j, -v)
            if idx_i < idx_j:
                return True

            if v < -candidate_i[-1]:
                candidate_i.append(-v)
                candidate_j.append(-v)
            elif v > -candidate_j[-1]:
                last_i = -candidate_i[-1]
                while candidate_j and v > -candidate_j[-1]:
                    candidate_i.pop()
                    candidate_j.pop()
                candidate_i.append(-last_i)
                candidate_j.append(-v)

        return False