remove_duplicates
remove_duplicates.go 源码
package main
//删除排序链表中的重复项
func deleteDuplicates1(head *ListNode) *ListNode {
if head == nil || head.Next == nil {
return head
}
prev, back := head, head.Next
for back != nil {
if prev.Val != back.Val {
prev.Next = back
prev = back
}
back = back.Next
}
prev.Next = back
return head
}
//另一种写法
func deleteDuplicates2(head *ListNode) *ListNode {
cur := head
for cur != nil && cur.Next != nil {
if cur.Val == cur.Next.Val {
cur.Next = cur.Next.Next
} else {
cur = cur.Next
}
}
return head
}
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