Given an array where elements are sorted in ascending order, convert it to a height balanced BST. """ class TreeNode(object):     def __init__(self, x):         self.val = x         self.left = None         self.right = None def array_to_bst(nums):     if not nums:         return None     mid = len(nums)//2     node = TreeNode(nums[mid])     node.left = array_to_bst(nums[:mid])     node.right = array_to_bst(nums[mid+1:])     return node.

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Randomized Select Algorithm

A randomized algorithm is defined as one that uses a certain amount of randomization in its logic or operation. It is said to be an algorithm that depends on the random number to perform its operation. It is used for reducing the overall time complexity, space complexity in the standard algorithm. The randomized algorithm uses the concept of random numbers to find the solutions to the different kinds of problems and also to improve the problem solutions.