def main():
sol = Solution()
# 709.转换成小写字母
'#print(sol.toLowerCase("HELLO"))'
# 461. 汉明距离
'#a = sol.hammingDistance(2,5)'
'#print(a)'
# 922. 按奇偶排序数组 II
# a = [4, 2, 8, 6, 1, 1, 1, 1]
# sol.sortArrayByParityII(a)
# 617. 合并二叉树
# r1 = Solution.TreeNode(1)
# r1.left = Solution.TreeNode(3)
# r1.right = Solution.TreeNode(2)
# r1.left.left = Solution.TreeNode(5)
#
# r2 = Solution.TreeNode(2)
# r2.left = Solution.TreeNode(1)
# r2.right = Solution.TreeNode(3)
# r2.left.right = Solution.TreeNode(4)
# r2.right.right = Solution.TreeNode(7)
#
# s = sol.mergeTrees(r1, r2)
# 237.删除链表中的节点
l1 = Solution.ListNode(4)
l1.next = Solution.ListNode(5)
l1.next.next = Solution.ListNode(1)
l1.next.next.next = Solution.ListNode(9)
l2 = l1.next.next
Solution.deleteNode(l1, node=l2)
l3 = l1
