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index.js
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Created
Thu, Sep 12, 01:18
Size
949 B
Mime Type
text/x-c++
Expires
Sat, Sep 14, 01:18 (1 d, 21 h)
Engine
blob
Format
Raw Data
Handle
20712315
Attached To
rOACCT Open Access Compliance Check Tool (OACCT)
index.js
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class
Node
{
/// value;
/// next;
constructor
(
value
)
{
this
.
value
=
value
;
// TODO: Remove this when targeting Node.js 12.
this
.
next
=
undefined
;
}
}
class
Queue
{
// TODO: Use private class fields when targeting Node.js 12.
// #_head;
// #_tail;
// #_size;
constructor
()
{
this
.
clear
();
}
enqueue
(
value
)
{
const
node
=
new
Node
(
value
);
if
(
this
.
_head
)
{
this
.
_tail
.
next
=
node
;
this
.
_tail
=
node
;
}
else
{
this
.
_head
=
node
;
this
.
_tail
=
node
;
}
this
.
_size
++
;
}
dequeue
()
{
const
current
=
this
.
_head
;
if
(
!
current
)
{
return
;
}
this
.
_head
=
this
.
_head
.
next
;
this
.
_size
--
;
return
current
.
value
;
}
clear
()
{
this
.
_head
=
undefined
;
this
.
_tail
=
undefined
;
this
.
_size
=
0
;
}
get
size
()
{
return
this
.
_size
;
}
*
[
Symbol
.
iterator
]()
{
let
current
=
this
.
_head
;
while
(
current
)
{
yield
current
.
value
;
current
=
current
.
next
;
}
}
}
module
.
exports
=
Queue
;
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