132 Pattern
Given an array of n integers nums , a 132 pattern is a subsequence of three integers nums[i] , nums[j] and nums[k] such that i < j < k and nums[i] < nums[k] < nums[j] . Return true if there is a 132 pattern in nums , otherwise, return false . Follow up: The O(n^2) is trivial, could you come up with the O(n logn) or the O(n) solution? Example 1: Input: nums = [1,2,3,4] Output: false Explanation: There is no 132 pattern in the sequence. Example 2: Input: nums = [3,1,4,2] Output: true Explanation: There is a 132 pattern in the sequence: [1, 4, 2]. Example 3: Input: nums = [-1,3,2,0] Output: true Explanation: There are three 132 patterns in the sequence: [-1, 3, 2], [-1, 3, 0] and [-1, 2, 0]. Constraints: n == nums.length ...