@Terence: It is subtraction of 2 lists and not addition. N for your logic of addition for x>9 you add px+1 and after that if it becomes > 9 how do you know the previous of it as you've moved the previous pointer?
Can someone comment on my logic ? On Wed, Aug 25, 2010 at 9:10 PM, Raj N <[email protected]> wrote: > They've mentioned that they're large lists. What if it is a 15 digit > number? Its not efficient then. > > > On Wed, Aug 25, 2010 at 8:29 PM, Sathaiah Dontula <[email protected]>wrote: > >> @Raj, >> >> How about doing like below ? >> >> Convert A to base 10 number, numA >> Convert B to base 10 number, numB, >> Then take the difference numC = abs(numA - numB), >> Then convert numC to linked list with the digits >> >> any comments ?, overflow condition is the problem here. >> >> Thanks & regards, >> Sathaiah Dontula >> >> On Wed, Aug 25, 2010 at 3:24 PM, Raj N <[email protected]> wrote: >> >>> Input : Two large singly linked lists representing numbers with most >>> significant digit as head and least significant as last node. >>> Output: Difference between the numbers as a third linked list with >>> Most significant digit as the head. >>> Eg: >>> --- >>> Input: >>> A = 5->4->2->0->0->9->0->0 >>> B = 1->9->9 >>> Output: >>> C = 5->4->2->0->0->7->0->1 >>> Required complexity : >>> O(n) >>> Constraint: >>> Reversing linked list is NOT allowed >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]<algogeeks%[email protected]> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<algogeeks%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
