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Update README.zh-CN.md (#804)

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* Update README.zh-CN.md

双向链表的删除部分，逻辑修改

* Update README.zh-CN.md
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jackbyebye1024 2022-01-22 17:43:11 +08:00 committed by GitHub
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commit e844a2f894
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1 changed files with 4 additions and 4 deletions
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src/data-structures/doubly-linked-list/README.zh-CN.md
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@ -19,7 +19,7 @@ Add(value)
Pre: value is the value to add to the list Pre: value is the value to add to the list
Post: value has been placed at the tail of the list Post: value has been placed at the tail of the list
n ← node(value) n ← node(value)
if head = ø if head != ø
head ← n head ← n
tail ← n tail ← n
else else
@ -51,14 +51,14 @@ Remove(head, value)
return true return true
end if end if
n ← head.next n ← head.next
while n = ø and value !== n.value while n != ø and value !== n.value
n ← n.next n ← n.next
end while end while
if n = tail if n = tail
tail ← tail.previous tail ← tail.previous
tail.next ← ø tail.next ← ø
return true return true
else if n = ø else if n != ø
n.previous.next ← n.next n.previous.next ← n.next
n.next.previous ← n.previous n.next.previous ← n.previous
return true return true
@ -74,7 +74,7 @@ ReverseTraversal(tail)
Pre: tail is the node of the list to traverse Pre: tail is the node of the list to traverse
Post: the list has been traversed in reverse order Post: the list has been traversed in reverse order
n ← tail n ← tail
while n = ø while n != ø
yield n.value yield n.value
n ← n.previous n ← n.previous
end while end while