Given a single linked list and an integer x your task is to complete the function deleteAllOccurances which deletes all occurences of a key x present in the linked list. The function takes two arguments: the head of the linked list and an integer x. The function should return the head of the modified linked list.
The first line of input contains an element T, denoting the no of test cases. Then T test cases follow. Each test case contains three lines. The first line of each test case contains an integer N denoting the no of elements of the linked list. Then in the next line are N space separated values of the linked list. The third line of each test case contains an integer x.
The output for each test case will be the space separated value of the returned linked list.
Example(To be used only for expected output):
2 2 1 4 4
1 2 2 3 2 3
2 2 1
1 3 3