my easy python solution


  • 0
    Z
    class Solution(object):
        def mergeTwoLists(self, l1, l2):
            dummy = ListNode(0)  
            cur = dummy  
            while l1 and l2:  
                if l1.val <= l2.val:  
                    cur.next = l1  
                    l1 = l1.next  
                else:  
                    cur.next = l2  
                    l2 = l2.next  
                cur = cur.next  
            cur.next = l1 or l2  
      
            return dummy.next  
    

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