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Given two numbers represented by two linked lists of size N and M. The task is to return a sum list. The sum list is a linked list representation of the addition of two input numbers.
Example 1:
Input:
N = 2
valueN[] = {4,5}
M = 3
valueM[] = {3,4,5}
Output: 3 9 0
Explanation: For the given two linked
list (4 5) and (3 4 5), after adding
the two linked list resultant linked
list will be (3 9 0).
Example 2:
Input:
N = 2
valueN[] = {6,3}
M = 1
valueM[] = {7}
Output: 7 0
Explanation: For the given two linked
list (6 3) and (7), after adding the
two linked list resultant linked list
will be (7 0).
Your Task:
The task is to complete the function addTwoLists() which has node reference of both the linked lists and returns the head of the new list.
Expected Time Complexity: O(N+M)
Expected Auxiliary Space: O(Max(N,M))
Constraints:
1 <= N, M <= 5000
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