Created
July 26, 2020 08:33
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package co.in.shoonya.abc.prep.ds.lists; | |
import co.in.shoonya.abc.prep.ds.lists.ds.ListNode; | |
public class AggregateAtZeroNode { | |
public static void main(String[] args) { | |
ListNode<Integer> l1 = new ListNode<Integer>(1); | |
l1.setNext(new ListNode<Integer>(4)); | |
l1.getNext().setNext(new ListNode<Integer>(0)); | |
l1.getNext().getNext().setNext(new ListNode<Integer>(0)); | |
l1.getNext().getNext().getNext().setNext(new ListNode<Integer>(2)); | |
l1.getNext().getNext().getNext().getNext().setNext(new ListNode<Integer>(2)); | |
l1.getNext().getNext().getNext().getNext().getNext().setNext(new ListNode<Integer>(0)); | |
l1.getNext().getNext().getNext().getNext().getNext().getNext().setNext(new ListNode<Integer>(7)); | |
System.out.println("aggregateAtZero::b4\t" + l1); | |
System.out.println("aggregateAtZero::4\t" + aggregateAtZero(l1)); | |
} | |
private static ListNode<Integer> aggregateAtZero(ListNode<Integer> input) { | |
int currSum = 0; | |
int marker = 0; | |
ListNode<Integer> prev = input; | |
ListNode<Integer> curr = input; | |
while (curr != null) { | |
currSum += curr.getData(); | |
if (curr.getData() == marker) { | |
prev.setData(currSum); | |
prev.setNext(curr.getNext()); | |
prev = prev.getNext(); | |
currSum = 0; | |
} | |
curr = curr.getNext(); | |
} | |
return input; | |
} | |
} |
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