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Symmetric Tree

Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center).

    def isSymmetric(self, root):
        def isSym(L,R):
            if not L and not R: return True
            if L and R and L.val == R.val: 
                return isSym(L.left, R.right) and isSym(L.right, R.left)
            return False
        return isSym(root, root)

Posted by Jamie Meyer 7 months ago

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