用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 4'd{H
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插入排序: 5i/E=D
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package org.rut.util.algorithm.support; HEuM"2{DMM
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import org.rut.util.algorithm.SortUtil; Hr+-ndH!Pq
/** VBX#
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* @author treeroot `es($7}P_W
* @since 2006-2-2 [[e |GQ
* @version 1.0 p-pw*wH0
*/ -/-6Td1JY>
public class InsertSort implements SortUtil.Sort{ #8z,'~\
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/* (non-Javadoc) =_'cG:=)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R2$ U K
*/ Vf?#W,5>=
public void sort(int[] data) { yo*iv+l
int temp; /,Rca1W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nFfCw%T?
} ~t:b<'/
} Qsntf.fT
} P*PL6UQ
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} 3] qlz?5
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冒泡排序: fl"y@;;#h
9 <KtI7
package org.rut.util.algorithm.support; O$Vm#|$sq
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import org.rut.util.algorithm.SortUtil; x}.d`=
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/** m"G N^V7
* @author treeroot PEBFN
* @since 2006-2-2 q~J
oGTv
* @version 1.0 z}1xy+
*/ >'6GcnEb4.
public class BubbleSort implements SortUtil.Sort{ 7I(t,AKJ
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/* (non-Javadoc) aE BP9RX}z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eh(Q^E;*
*/ ,0Zn hS)kq
public void sort(int[] data) { YC]YX H
int temp; ~9?U_ahfVt
for(int i=0;i for(int j=data.length-1;j>i;j--){ gOyY#]g
if(data[j] SortUtil.swap(data,j,j-1); grQnV' q
} olMO+-USP
} $a\Uv0:xRx
} #tZf>zrs
} [S]!+YBK
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} cIr1"5POXK
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选择排序: 0sd-s~;
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package org.rut.util.algorithm.support; ^
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import org.rut.util.algorithm.SortUtil; ~B!O~nvdQ
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/** Iv(Qa6(
* @author treeroot naIv=
* @since 2006-2-2 Iz)hz9k
* @version 1.0 P/pjy
*/ y5/6nvH_6
public class SelectionSort implements SortUtil.Sort { "Py Wo
@%<?GNS O
/* yvz?4m"_yB
* (non-Javadoc) u5Ny=Xm
* 5w3 ZUmjO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^$IZLM?E~
*/ 14D7U/zer
public void sort(int[] data) { *w/WHQ`xI
int temp; +%wWSZ<#
for (int i = 0; i < data.length; i++) { lKEX"KQ!
int lowIndex = i; Wu!t C
for (int j = data.length - 1; j > i; j--) { s^>lOQ=
if (data[j] < data[lowIndex]) { MdH97L)L.0
lowIndex = j; h/Hl?O8[
} D;zWksq
} XocsSs
SortUtil.swap(data,i,lowIndex); f>r3$WKj
} rer|k<k;]G
} voV:H[RD9
-+}5ma
} T;!ukGoFP
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Shell排序: 7':f_]
h}|6VJ@.
package org.rut.util.algorithm.support; 1s`)yu^`v
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import org.rut.util.algorithm.SortUtil; C]'g:93L
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/** >+
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* @author treeroot S= -M3fP~
* @since 2006-2-2 V5a?=vK9
* @version 1.0 sS2_-X[_
*/ uuSR%KK]|
public class ShellSort implements SortUtil.Sort{ 1OJ*wI*
|mxNUo-
/* (non-Javadoc) S<nP80C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :p<kQ4
*/ X0WNpt&h
public void sort(int[] data) { URK!W?3c
for(int i=data.length/2;i>2;i/=2){ rLJ[FqS
for(int j=0;j insertSort(data,j,i); &$qF4B*
}
\Mb(6~nC
} hCM8/Vvx6
insertSort(data,0,1); j1YH9T#|D
} a@#Q:O)4
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/** fxDj+Q1p
* @param data 8xF)_UV
* @param j AJyq>0p
* @param i aDL)|>"Q
*/ [$l"-*s4
private void insertSort(int[] data, int start, int inc) { %bP~wl~
int temp; `c"4PU^
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k6Ihc?HL
} d/{Q
t
} 53
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} 5`{vE4A]q
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} mG)8U{L
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快速排序: MO[kr2T
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package org.rut.util.algorithm.support; 9Ct_$.Q.
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import org.rut.util.algorithm.SortUtil; qy_%~c87
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/** =}JBA>q(
* @author treeroot &%^K,Q"
* @since 2006-2-2 6eQsoKK
* @version 1.0 ]9jZndgC
*/ ]gu1#
public class QuickSort implements SortUtil.Sort{ QDS0ejhp
vwKw?Z0%J
/* (non-Javadoc) [O2h-`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +YTx
*/ &Y1`?1;nw
public void sort(int[] data) { .APVjqG
quickSort(data,0,data.length-1); }A|))Ao|
} Wo{K}
private void quickSort(int[] data,int i,int j){ I:#Ok+
int pivotIndex=(i+j)/2; :pwa{P
file://swap 3bH~';<
SortUtil.swap(data,pivotIndex,j);
tPA:_
'61i2\[lZQ
int k=partition(data,i-1,j,data[j]); Qyz>ZPu}sz
SortUtil.swap(data,k,j); u4YM^* S.
if((k-i)>1) quickSort(data,i,k-1); ~r<p@k=.#0
if((j-k)>1) quickSort(data,k+1,j); q7,^E`5EgU
<_9!
} s~^*+kq
/** 6xHi\L
* @param data :zlpfm2
* @param i `(!NYx
* @param j j 1(T )T
* @return *>k!hq;j
*/ $A`xhh[
private int partition(int[] data, int l, int r,int pivot) {
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do{ W,3zL.qH"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lEHwZ<je
SortUtil.swap(data,l,r); /xySwSmh3
} 3 > |uF
while(l SortUtil.swap(data,l,r); 3 jF|Ic
return l; -#aZF2z
} &]< 3~6n
O)uOUB
} 66Gx.tE
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改进后的快速排序: Z:@6Lv?CN
R2 lXTW*
package org.rut.util.algorithm.support; |5,<jyp
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import org.rut.util.algorithm.SortUtil; &~#iIk~%
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/** Vclr2]eV4O
* @author treeroot =_
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* @since 2006-2-2 %c X"#+e
* @version 1.0 M)JADX
*/ +I52EXo
public class ImprovedQuickSort implements SortUtil.Sort { rB%y6P B
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private static int MAX_STACK_SIZE=4096; )11W)G`w
private static int THRESHOLD=10; QR"bYQ
/* (non-Javadoc) =&Xdm(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0|XKd24BN
*/ =Vb~s+YW
public void sort(int[] data) { q[ULGv
int[] stack=new int[MAX_STACK_SIZE]; &>(gt<C$
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int top=-1;
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int pivot; :)IV!_>'d
int pivotIndex,l,r; /L&M,OUcr.
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stack[++top]=0; Oz{%k#X-
stack[++top]=data.length-1; Qz+sT6js-
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while(top>0){ ]JjK#eh
int j=stack[top--]; :.uk$jx
int i=stack[top--]; J02^i5l
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pivotIndex=(i+j)/2; gn ?YF`
pivot=data[pivotIndex]; k4{:9zL1#?
B
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SortUtil.swap(data,pivotIndex,j); !][F
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file://partition 7,'kpyCj
l=i-1; Jdj?I'XtY
r=j; |QMA@Mx
do{ oM,- VUr
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2z_2.0/3
SortUtil.swap(data,l,r); 3c #s|qW
} XE rUS80
while(l SortUtil.swap(data,l,r); ?Elg?)os
SortUtil.swap(data,l,j); e1/sqXWo
n ~,tQV
if((l-i)>THRESHOLD){ m\vmY
stack[++top]=i; pSfYu=#f
stack[++top]=l-1; f:woP7FP
} @{d\j]Nw
if((j-l)>THRESHOLD){ <7)Fh*W@
stack[++top]=l+1; s0C:m
stack[++top]=j; kl}Xmw{tJ
} _xrwu;o0}
,9of(T(~
} OgCy4_a[f
file://new InsertSort().sort(data); p&N#_dmlH
insertSort(data); oyx^a9
} riCV&0"n
/** WE6\dhJ<
* @param data }Ln@R~[
*/ ,gx)w^WTm
private void insertSort(int[] data) { 3[IJhR[
int temp; 9}P"^N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gy"%R-j7
} UBZ9A
} #X`8dnQZ
} K84^Oq
^G|98yc!'
} S%mfs!E>
Ug%_@t/?
归并排序: Bv9kSu9'~
5[gh|I;D
package org.rut.util.algorithm.support; 1||+6bRP
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import org.rut.util.algorithm.SortUtil; 0g=`DSC<(
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/** }|wv]U~
* @author treeroot iL]'y\?lv
* @since 2006-2-2 6'C2SihYp
* @version 1.0 @f1*eo5f
*/ V[;M&=,"
public class MergeSort implements SortUtil.Sort{ lr@#^
8g~EL{'
/* (non-Javadoc) q]% T:A=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T:iP="?{
*/ V416g |lBO
public void sort(int[] data) { NHQF^2 \\
int[] temp=new int[data.length]; M+P$/Wk
mergeSort(data,temp,0,data.length-1); ^%>kO,
} X~9j$3lUBR
=L-I-e97@
private void mergeSort(int[] data,int[] temp,int l,int r){ F<&!b2)ML
int mid=(l+r)/2; 4QHS{tj
if(l==r) return ; s!+
pL|
mergeSort(data,temp,l,mid); ?]O7Ao
mergeSort(data,temp,mid+1,r); kv{}C)kt3
for(int i=l;i<=r;i++){ ?>
Dtw#}
temp=data; GqKsK
r2%
} B 0ee?VC
int i1=l; 'gMfN
int i2=mid+1; ]wVk+%e
for(int cur=l;cur<=r;cur++){ ,)FdRRj
if(i1==mid+1) aA'TD:&p1
data[cur]=temp[i2++]; s5&@Cxzl
else if(i2>r) #*%q'gyHT
data[cur]=temp[i1++]; tY|8s]{2
else if(temp[i1] data[cur]=temp[i1++]; ~x:DXEV,
else G}d-(X
data[cur]=temp[i2++]; m#!=3P7T
} lUOvm\
} $md%xmQ[
c=O,;lWFqm
} w'T q3-%V
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改进后的归并排序: g"VMeW^
23F/\2MSG
package org.rut.util.algorithm.support; u.XQ&
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import org.rut.util.algorithm.SortUtil; TUK"nKSZ`.
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/** Z8O n%Mx{"
* @author treeroot c}Z6V1]QP
* @since 2006-2-2 &[Xu!LP
* @version 1.0 fV>CZ^=G
*/ \nNXxTxX!
public class ImprovedMergeSort implements SortUtil.Sort { dihjpI_
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private static final int THRESHOLD = 10; tRb]7 z
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/* Dim>
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* (non-Javadoc) 4BL;FO
* #6v27:XK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uN*KHE+h
*/ ;bzX%f?|G
public void sort(int[] data) { F9"w6;hh
int[] temp=new int[data.length]; Ex amD">T
mergeSort(data,temp,0,data.length-1); _gj&$zP
} ;*TIM%6#
{$D,?V@%_
private void mergeSort(int[] data, int[] temp, int l, int r) { =ac_,]z
int i, j, k; tC?=E#3V
int mid = (l + r) / 2; C$h<Wt=<
if (l == r) HAz By\M{
return; |077Sf|
if ((mid - l) >= THRESHOLD) 3rW|kkn
mergeSort(data, temp, l, mid); 'NjzgZ~]P
else 7,qYV}
insertSort(data, l, mid - l + 1); !^#jwRpeN
if ((r - mid) > THRESHOLD) C@ZK~Y_g
mergeSort(data, temp, mid + 1, r); 96cJ8I8
else PX:'/{V
insertSort(data, mid + 1, r - mid); #AkV/1Y
h0--B]f@
for (i = l; i <= mid; i++) { @}p2aV59
temp = data; 1J=.N|(@Q
} (/d5UIM{&
for (j = 1; j <= r - mid; j++) { 94uNI8
temp[r - j + 1] = data[j + mid]; }"vW4
} vy2Q g
int a = temp[l]; Y`7~Am/r;&
int b = temp[r]; j`'`)3f
for (i = l, j = r, k = l; k <= r; k++) { XgN` 7!Z
if (a < b) { h+p*=|j`
data[k] = temp[i++]; ,j;m!V
a = temp; )UgX3+@
} else { (s<Dd2&.H
data[k] = temp[j--]; ;7]u!Q
b = temp[j]; 5,qj7HZF
} _R'Fco
} '|]e<Mt-
} Q)m4_+,d
?&G`{Ey
/** E1dD7r\
* @param data ^'CPM6J
* @param l Xp\/YJOibd
* @param i <?-YTY|
*/ w{[=l6L m
private void insertSort(int[] data, int start, int len) { 4%4avEa"w
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (fNUj4[
} v 8T$ &-HJ
} 'w>_+jLT
} #/"8F O%~p
} mpAR7AG6
W>r#RXmh
堆排序: ?]fF3 SJk
2XTPBZNe
package org.rut.util.algorithm.support; qPB8O1fyU
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import org.rut.util.algorithm.SortUtil; LTNj| u
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/** :q8b;*:
* @author treeroot iHwLZ[O{
* @since 2006-2-2 UNijFGi
* @version 1.0 =PRx?q`d
*/ S)QAXjH
public class HeapSort implements SortUtil.Sort{ /,!qFt
pi=-#g(2
/* (non-Javadoc) Vd".u'r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b KTcZG
*/ tQZs.1=z
public void sort(int[] data) { E$W{8?:{
MaxHeap h=new MaxHeap(); Y2xL>F
h.init(data); @L.82p{h
for(int i=0;i h.remove(); Um1[sMc{au
System.arraycopy(h.queue,1,data,0,data.length); Z3>N<u8)
} WZOY)>K
l"\~yNgk
private static class MaxHeap{ ]k9)G*
j4?@(u9;j
void init(int[] data){ q@b|F-
this.queue=new int[data.length+1]; \V9Z#>
for(int i=0;i queue[++size]=data; -.g|l\
fixUp(size); NCxqh <
} RoCfJ65
} 0|R# Tb;Y
iXyO(w4D
private int size=0; <0yE
5Mrf
uOa26kE4
private int[] queue; C6O8RHg
??n*2s@t
public int get() { O+%WR
return queue[1]; W@yJAQ
} c/B'jPt
66^ycZCH
public void remove() { &1+X\c+tb
SortUtil.swap(queue,1,size--);
'9c2Q/
fixDown(1); qwIa?!8o
} wApMzZ(X2y
file://fixdown _qbIh
private void fixDown(int k) { -n'F v@U
int j; )c l5B{1P
while ((j = k << 1) <= size) { >A0k 8T
if (j < size %26amp;%26amp; queue[j] j++; "NgoaG~!YO
if (queue[k]>queue[j]) file://不用交换 PrudhUI^
break; :
tWU .f#
SortUtil.swap(queue,j,k); M xyN\Mq'
k = j; J8Yd1.Qj
} `%09xMPu
} A'G@uD@3
private void fixUp(int k) { +~xnXb1
while (k > 1) { &$`yo`
int j = k >> 1; DGevE~
if (queue[j]>queue[k]) ,f1q)Qf
break; >~K
qg~
SortUtil.swap(queue,j,k); rDm'Z>nTf
k = j; jy]JiQB
} `DT3x{}_S
} 8k(P,o
upeU52@\
} Rb(SBa
>J|]moSVA
} a_h]?5
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[`]4P&
SortUtil: e"
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package org.rut.util.algorithm; ^<LY4^
R\XKMF3mN3
import org.rut.util.algorithm.support.BubbleSort; Cgz D$`~
import org.rut.util.algorithm.support.HeapSort; y^]tahbo
import org.rut.util.algorithm.support.ImprovedMergeSort; u_7~TE3W
import org.rut.util.algorithm.support.ImprovedQuickSort; *>VVt8*Et
import org.rut.util.algorithm.support.InsertSort; lV.F,3
import org.rut.util.algorithm.support.MergeSort; ho>k$s?
import org.rut.util.algorithm.support.QuickSort; QdLYCR4f
import org.rut.util.algorithm.support.SelectionSort; VXR]"W=
import org.rut.util.algorithm.support.ShellSort; *xp\4;B
}E`dZW*!!
/** G;f/Tch
* @author treeroot ' oFxR003
* @since 2006-2-2 d|T!v
* @version 1.0 gocrjjAHk
*/ tK
k#LWB
public class SortUtil { QXF
aAb=(7
public final static int INSERT = 1; 5=e@d:Sz
public final static int BUBBLE = 2; WcC?8X2
public final static int SELECTION = 3; JWA@+u*k
public final static int SHELL = 4; p$ bnK]
public final static int QUICK = 5; [frq
'c
public final static int IMPROVED_QUICK = 6; ",{ibh)g$`
public final static int MERGE = 7; o[E_Ge}g8
public final static int IMPROVED_MERGE = 8; <(vCiH9~P
public final static int HEAP = 9; Q:ezifQ
6%Be36<
public static void sort(int[] data) { `GXkF:f=
sort(data, IMPROVED_QUICK); ?YeWH
WM
} IF]lHB
private static String[] name={ Cuc$3l(%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Agrp(i"\@
}; kD[ r.Dma
eHDef
private static Sort[] impl=new Sort[]{ QJ|a p4r
new InsertSort(), e)E$}4
new BubbleSort(), w,Ee>cV]a
new SelectionSort(), .'a&33J
new ShellSort(), )]#aa uC+
new QuickSort(), Z@Ae$ '9H
new ImprovedQuickSort(), b=3H
new MergeSort(), _,</1~.
new ImprovedMergeSort(), qH['09/F6
new HeapSort() `Y?87f:SP
}; <, 3ROo76
c^`]`xiX
public static String toString(int algorithm){ %7O?JI[
return name[algorithm-1]; uIU5.\"s
} ki>~H!zB
""Q1|
public static void sort(int[] data, int algorithm) { v`1,4,;,qs
impl[algorithm-1].sort(data); |a{Q0:
} GU Q{r!S
4Z|vnj)Z
public static interface Sort { ~SSU`
public void sort(int[] data); JF/,K"J
} 9M"].~iNE
l|5fE1K9U
public static void swap(int[] data, int i, int j) { 7^T^($+6s&
int temp = data; wW>)(&!F
data = data[j]; w\}?( uO
data[j] = temp; .CSS}4
} Ngg?@pG0y
} hVUP4 A