function FindFirstCommonNode(pHead1, pHead2)
{
    // write code here
    let p1 = pHead1
    let p2 = pHead2
    while(p1 !== p2){
         p1=p1==null?pHead2:p1.next;
        p2=p2==null?pHead1:p2.next;
    }
    return p1
    
}
module.exports = {
    FindFirstCommonNode : FindFirstCommonNode
};