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AlgorithmVisualizer/algorithm/sorting/cycle/basic/code.js at master · Shayan0915/AlgorithmVisualizer · GitHub
Shayan0915
/
AlgorithmVisualizer
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AlgorithmVisualizer
/
algorithm
/
sorting
/
cycle
/
basic
/
code.js
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80 lines (66 loc) · 2.1 KB
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AlgorithmVisualizer
/
algorithm
/
sorting
/
cycle
/
basic
/
code.js
Copy path
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80 lines (66 loc) · 2.1 KB
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logger
.
_print
(
'original array = ['
+
D
.
join
(
', '
)
+
']'
)
;
var
N
=
D
.
length
;
var
writes
=
0
;
// number of writing performed
var
pos
;
// the index of item in the sorted array
var
item
;
// an item in the array
var
temp
;
// a temp value used for storing swapped item
for
(
var
cycleStart
=
0
;
cycleStart
<=
N
-
2
;
cycleStart
++
)
{
item
=
D
[
cycleStart
]
;
// find where to put the item
pos
=
cycleStart
;
tracer
.
_select
(
cycleStart
)
;
for
(
var
i
=
cycleStart
+
1
;
i
<=
N
-
1
;
i
++
)
{
tracer
.
_select
(
i
)
.
_wait
(
)
.
_deselect
(
i
)
;
if
(
D
[
i
]
<
item
)
{
pos
++
;
}
}
// if the item is already there, this is not a circle
if
(
pos
===
cycleStart
)
{
tracer
.
_deselect
(
cycleStart
)
;
continue
;
}
// otherwise put the item there or right after any duplicates
while
(
item
===
D
[
pos
]
)
{
pos
++
;
}
// write item to new index and increment writes
temp
=
D
[
pos
]
;
D
[
pos
]
=
item
;
item
=
temp
;
writes
++
;
if
(
pos
!==
cycleStart
)
{
logger
.
_print
(
'Rewrite '
+
D
[
pos
]
+
' to index '
+
pos
+
'; the next value to rewrite is '
+
item
)
;
}
else
{
logger
.
_print
(
'Rewrite '
+
D
[
pos
]
+
' to index '
+
pos
)
;
}
tracer
.
_select
(
pos
)
.
_wait
(
)
.
_deselect
(
pos
)
;
tracer
.
_notify
(
pos
,
D
[
pos
]
)
.
_notify
(
cycleStart
,
D
[
cycleStart
]
)
.
_wait
(
)
;
tracer
.
_denotify
(
pos
)
.
_denotify
(
cycleStart
)
;
// rotate the rest of the cycle
while
(
pos
!==
cycleStart
)
{
pos
=
cycleStart
;
for
(
i
=
cycleStart
+
1
;
i
<=
N
-
1
;
i
++
)
{
tracer
.
_select
(
i
)
.
_wait
(
)
.
_deselect
(
i
)
;
if
(
D
[
i
]
<
item
)
{
pos
++
;
}
}
while
(
item
===
D
[
pos
]
)
{
pos
++
;
}
temp
=
D
[
pos
]
;
D
[
pos
]
=
item
;
item
=
temp
;
if
(
pos
!==
cycleStart
)
{
logger
.
_print
(
'Rewrite '
+
D
[
pos
]
+
' to index '
+
pos
+
'; the next value to rewrite is '
+
item
)
;
}
else
{
logger
.
_print
(
'Rewrite '
+
D
[
pos
]
+
' to index '
+
pos
)
;
}
tracer
.
_select
(
pos
)
.
_wait
(
)
.
_deselect
(
pos
)
;
tracer
.
_notify
(
pos
,
D
[
pos
]
)
.
_notify
(
cycleStart
,
D
[
cycleStart
]
)
.
_wait
(
)
;
tracer
.
_denotify
(
pos
)
.
_denotify
(
cycleStart
)
;
writes
++
;
}
}
logger
.
_print
(
'Number of writes performed is '
+
writes
)
;
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