TLE Error kth node from end

#1

Not able to understand why test cases are failing.My code:

#2

hello @Vishal_234
improve your addnode function it is taking O(n) for each node.
u can improve it storing tail of ur linked list.
if u will have tail then u can simply add node in o(1) by this.
tail->next=new node
tail=tail->next;

#3

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