Given two sorted linked lists consisting of N and M nodes respectively. The task is to merge both of the list (in-place) and return head of the merged list.
Note: It is strongly recommended to do merging in-place using O(1) extra space.
Input:
First line of input contains number of testcases T. For each testcase, first line of input contains N and M, and next two line contains N and M sorted elements in two lines for each.
Output:
For each testcase, print the merged list in sorted form.
User Task:
The task is to complete the function sortedMerge() which takes references to the heads of two linked lists as the arguments and returns the head of merged linked list.
Constraints:
1 <= T <= 200
1 <= N, M <= 103
1 <= Node's data <= 103
Example:
Input:
2
4 3
5 10 15 40
2 3 20
2 2
1 1
2 4
Output:
2 3 5 10 15 20 40
1 1 2 4
Explanation:
Testcase 1: After merging the two linked lists, we have merged list as 2, 3, 5, 10, 15, 20, 40.
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