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62 lines (35 loc) · 732 Bytes
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52.java
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62 lines (35 loc) · 732 Bytes
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public class Solution {
public ListNode getIntersectionNode(ListNode headA, ListNode headB) {
ListNode p,q;
p = headA;
q = headB;
while(p!=null&&q!=null)
{
p = p.next;
q = q.next;
}
ListNode a,b;
a = headA;
b = headB;
while(p!=null)
{
p = p.next;
a = a.next;
}
while(q!=null)
{
q = q.next;
b = b.next;
}
while(a!=null&&b!=null)
{
if(a == b)
{
return a;
}
a = a.next;
b = b.next;
}
return null;
}
}