82. Remove Duplicates from Sorted List II leetcode

deleteDuplicates.go

func deleteDuplicates(head *ListNode) *ListNode {
    if head == nil{
        return head
    }
    tempNode := &ListNode{Val: head.Val-1, Next:head}

    node:=tempNode
    fast := tempNode.Next
    
    for node.Next!=nil && fast.Next!=nil{
        
        if fast.Val ==fast.Next.Val{
            temp := fast
            for temp!=nil && temp.Val ==fast.Val{
                temp=temp.Next
            }
            
            node.Next=temp
            fast= temp
           
        }else{
            node = node.Next
            fast = fast.Next
        }
    }
    return tempNode.Next
}