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You are given a class Solution and an inner class Inner.Private. The main method of class Solution takes an integer num as input. The powerof2 in class Inner.Private checks whether a number is a power of 2. Call the method powerof2 of the class Inner.Private from the main method of...
A better solution looks at each node only once. DO NOT USE THIS SOLUTION /** * Definition for a binary tree node. * function TreeNode(val) { * this.val = val; * this.left = this.right = null; * } */ function isValidBST(root, min = 0, max = 9999) { if (!root) { ...
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