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。 Wu^Rv- xA
插入排序: 3fhY+$tq
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package org.rut.util.algorithm.support; aL4^ po
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import org.rut.util.algorithm.SortUtil; xy7A^7Li
/** *:@KpYWx"
* @author treeroot {#qUZ z-
* @since 2006-2-2 zPa2fS8
* @version 1.0 ~c35Y9-5
*/ "t&=~eOe3
public class InsertSort implements SortUtil.Sort{ -0d9,,c
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/* (non-Javadoc) xeSch?}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W|m(Jh[w]
*/ 46}U+>
public void sort(int[] data) { AQUAQZc
int temp; Tv DSs])
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x[)-h/&Fh
} lc[6Mpi7s[
} nsRCDUCi
} dGYR
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} c$!?4z_.
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冒泡排序: 7b[sW|{
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package org.rut.util.algorithm.support; EL$DvJ~
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import org.rut.util.algorithm.SortUtil; 2L~Vr4eHG
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/** xrPZy*Y,
* @author treeroot Xx{| [2`
* @since 2006-2-2 VGc*aQYa
* @version 1.0 N!(mM;1X)
*/ o>r
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public class BubbleSort implements SortUtil.Sort{ %xlpOR4
]
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/* (non-Javadoc) %NrH\v{7Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?.SGn[
*/ (Lgea
public void sort(int[] data) { v:P]o9Oj8
int temp; C8|V?bL
for(int i=0;i for(int j=data.length-1;j>i;j--){ &))d],tJX
if(data[j] SortUtil.swap(data,j,j-1); YCD|lL#
} %]_: \!
} t2o{=!$WH
} Oj c Tu
} o~~;I
}QCnN2bV
} X[o+Y@bc
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选择排序: 'Gn>~m
T]De{nH u
package org.rut.util.algorithm.support; [7I bT:ph
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import org.rut.util.algorithm.SortUtil; 1?Y>Xz
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/** LL#REK|lm8
* @author treeroot YGo?%.X
* @since 2006-2-2 4u:SE
* @version 1.0 !i;6!w
*/ ;d6Dm)/(
public class SelectionSort implements SortUtil.Sort { 8gP1]xD
r%.k,FzGZY
/* 0V1GX~2
* (non-Javadoc) r@4A%ql<
* t(#9.b`W)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2t\0vV2)/O
*/ e]RzvWq
public void sort(int[] data) { a<<4gXx
int temp; ]@#9B>v=
for (int i = 0; i < data.length; i++) { ^v;)6a2
int lowIndex = i; Y)1/fEM
for (int j = data.length - 1; j > i; j--) { )%K<pIk
if (data[j] < data[lowIndex]) { !zX()V
lowIndex = j; #hxYB
} 5skN'*oG
} 9-;-jnDy
SortUtil.swap(data,i,lowIndex); 4aS}b3=n
} Z\nDR|3
} A9.TRKb=8
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} xsH1)
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Shell排序: Te-p0x?G.
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package org.rut.util.algorithm.support; .$&^yp
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import org.rut.util.algorithm.SortUtil; ai_ve[A
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/** Ol>q(-ea
* @author treeroot A<+Dx
* @since 2006-2-2 z%D7x5!,R
* @version 1.0 cqG6di7#
*/ <+k&8^:bi
public class ShellSort implements SortUtil.Sort{ EV?}oh"x
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/* (non-Javadoc) O-(V`BZe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .?45:Ey~g
*/ QOB^U-cW
public void sort(int[] data) { NIs 7v
for(int i=data.length/2;i>2;i/=2){ Gm|-[iUTG]
for(int j=0;j insertSort(data,j,i);
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} OS z71;j
} 8gS7$ EH'
insertSort(data,0,1); >of34C"DI
} zS%XmS\
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[D[[
/** \4N8-GwZQ
* @param data :*Wq%Y=
* @param j sM-,95H
* @param i VhO%4[Jl
*/ O%EA,5U.
private void insertSort(int[] data, int start, int inc) { ["3dr@T9Z
int temp;
^ }7O|Y7
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A8m06
} 1 $&@wG
} fp [gKRSF
} 4'O,xC
?9~^QRLT
} ?\o~P
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快速排序: HA,o2jZ?In
~XOmxz0
package org.rut.util.algorithm.support; L I<S
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import org.rut.util.algorithm.SortUtil; gQeQy
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/** L2XhrLK.|
* @author treeroot +hN>Q$E
* @since 2006-2-2 c~R'`Q
* @version 1.0 fmW{c mr|
*/ RDdnOzx
public class QuickSort implements SortUtil.Sort{ 3}|[<^$
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/* (non-Javadoc) YlrN^rO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K0gQr.J53
*/ q94;x|63
public void sort(int[] data) { ;%e)t[5
quickSort(data,0,data.length-1); i7#4&r
} DPI[~
private void quickSort(int[] data,int i,int j){ zZ%[SW&vC
int pivotIndex=(i+j)/2; tj13!Cc}e`
file://swap yT7$6x
SortUtil.swap(data,pivotIndex,j); PeJ#9hI~rQ
^%7(
int k=partition(data,i-1,j,data[j]); ]rv\sD`[
SortUtil.swap(data,k,j); wK(]E%\
if((k-i)>1) quickSort(data,i,k-1);
V9) /
if((j-k)>1) quickSort(data,k+1,j); 'n'>+W:
^-"Iwy
} c1Ks{%iA
/** Q!+AiSTU
* @param data vG_R( ]d
* @param i A6]:BuP;c
* @param j EZ<:>V-_D
* @return m'"r<]pB*4
*/ Skt-5S#
private int partition(int[] data, int l, int r,int pivot) { ,U\s89
do{ $?56 i4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
n4{%M
SortUtil.swap(data,l,r); cfIC(d
} =dGp&9K,fw
while(l SortUtil.swap(data,l,r); e8vy29\S
return l; KuP#i]Na
} \GL] I.
5Y *4a%"
} 6|eqQ+(A
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改进后的快速排序: WGv 47i
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package org.rut.util.algorithm.support; ~[Tcl
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import org.rut.util.algorithm.SortUtil; J+P<zC
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/** <U3X4)r
* @author treeroot @vl$[Z|
* @since 2006-2-2 !8G)`'
* @version 1.0 NVMn7H}>
*/ B'yjMY![
public class ImprovedQuickSort implements SortUtil.Sort { M@.l#
[@U
Q5ASN"_
private static int MAX_STACK_SIZE=4096; H^-Y]{7
private static int THRESHOLD=10; :+"4_f0
/* (non-Javadoc) ;oOTL'Vu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4t[7lL`Z
*/ l2LQV]l
public void sort(int[] data) { E+ /Nicn=
int[] stack=new int[MAX_STACK_SIZE]; tc'iKJ5)
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int top=-1; h?xgOb!4
int pivot; bN_e~ z
int pivotIndex,l,r; )k(K/m
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stack[++top]=0; 1
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stack[++top]=data.length-1; 6\7c:
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while(top>0){ UVw^t+n
int j=stack[top--]; TanWCt4r
int i=stack[top--]; ZO%^r%~s
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pivotIndex=(i+j)/2; xrg"/?84
pivot=data[pivotIndex]; "B3jq^
AY52j
SortUtil.swap(data,pivotIndex,j); i6#*y!3{
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file://partition 1X)#iY
l=i-1; Tksv7*5$
r=j; d_`MS@2
do{ rnK]3Ust
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C98F?uo%Q
SortUtil.swap(data,l,r); ?g ,s<{
} -YQh
F;/
while(l SortUtil.swap(data,l,r); 77M!2S_E
SortUtil.swap(data,l,j); 6:2* <
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if((l-i)>THRESHOLD){ {?yVA
stack[++top]=i; ^Gd1T
stack[++top]=l-1; %r[`HF>
} O&7.Ry
m
if((j-l)>THRESHOLD){ {"'M2w:|D1
stack[++top]=l+1; @}q, ';H7
stack[++top]=j; g@'XmT="_
} }`w(sec:3
/l7 %x.
} 4#(/{6J
file://new InsertSort().sort(data); QP'sS*saJ
insertSort(data); ?6_]^:s
} Ic&~iqQ
/** uj3`M9
* @param data @|:fm()
<
*/ 8|Tqk,/pD
private void insertSort(int[] data) { *)Pm
int temp; WXxnOLJr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2Z{?3mAb;
} 5, ;\zSz
} Tt~4'{Bc
} yP]>eLTSd
E{V?[HcWq
} T9c7cp[
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归并排序: iM8Cw/DS
}Cu:BD.zQ
package org.rut.util.algorithm.support; OmBM)g
q_[y|ETJ]
import org.rut.util.algorithm.SortUtil; YIk@{V
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/** ft/k-64
* @author treeroot ]C^ #)7
* @since 2006-2-2 I;@q`Tm
* @version 1.0 tpSgbGzp
*/ GSRf/::I}4
public class MergeSort implements SortUtil.Sort{ !PIg,
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/* (non-Javadoc) p.:|Z-W$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RZxh"lIo
*/ f hK<P_}
public void sort(int[] data) { ;SXkPs3q
int[] temp=new int[data.length]; "7sv@I_j
mergeSort(data,temp,0,data.length-1); BQfnoF
} )Cdw_Yx
uT]$R
private void mergeSort(int[] data,int[] temp,int l,int r){ _EMXx4J
int mid=(l+r)/2; ?Q_ @@)
if(l==r) return ; 6?,qysm06
mergeSort(data,temp,l,mid); xtGit}
mergeSort(data,temp,mid+1,r); SXsszb:_
for(int i=l;i<=r;i++){ B}04E^
temp=data; ILCh1=?{9r
} N@PuC>
int i1=l; ;\th.!'rn
int i2=mid+1; w#1BHx
for(int cur=l;cur<=r;cur++){ 46vC/
if(i1==mid+1) {eU>E/SQ
data[cur]=temp[i2++]; p@78Xmu?q
else if(i2>r) ddL3wQ
data[cur]=temp[i1++]; ;X+0,K3c
else if(temp[i1] data[cur]=temp[i1++]; >C,0}lj
else rZ,qHM
data[cur]=temp[i2++]; tzN9d~JZ
} ds*gL ~k^
} FqJd
qVU<jt
} GipiO5)1C
X#T|.mCdC
改进后的归并排序: 9z4F/tUq
Pac ^=|h<q
package org.rut.util.algorithm.support; h HHR]e5:
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import org.rut.util.algorithm.SortUtil; G>pedE\
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/** K cex%.
* @author treeroot O=}w1]
* @since 2006-2-2 D;JZ0."
* @version 1.0 !43nL[]
*/ +m
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public class ImprovedMergeSort implements SortUtil.Sort { A23K!a2u&
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private static final int THRESHOLD = 10; i$pUUK
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/* UK
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* (non-Javadoc) #>_t[9;
* .;31G0<w2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ();Z,A
*/ ecm+33C
public void sort(int[] data) { >W+,(kAS
int[] temp=new int[data.length]; e }O&_j-
mergeSort(data,temp,0,data.length-1); )T '?"guh`
} 53/$8=
&=t~_ Dc
private void mergeSort(int[] data, int[] temp, int l, int r) { MZVbOcSAd
int i, j, k; At>e4t2@
int mid = (l + r) / 2; }vZfp5Y
if (l == r) G l/3*J
return; 2G|}ENC
if ((mid - l) >= THRESHOLD) 2KXFXR
mergeSort(data, temp, l, mid); &2:WezDF
else !rgXB(
insertSort(data, l, mid - l + 1); zx)}XOYf
if ((r - mid) > THRESHOLD) <O)
if^
mergeSort(data, temp, mid + 1, r); ;xq;c\N
else @<P;F
insertSort(data, mid + 1, r - mid); )j]f
]8
j*2/[Eq
for (i = l; i <= mid; i++) { Qv,ORm
h5
temp = data; Wv3p!zW3I
} n<EIu
for (j = 1; j <= r - mid; j++) { Af]BR_-
temp[r - j + 1] = data[j + mid]; l
} B$c'^
)
int a = temp[l]; /slCK4vFc
int b = temp[r]; H1~9f{
for (i = l, j = r, k = l; k <= r; k++) { DB"z93Mr<K
if (a < b) { Z3zD4-p$_
data[k] = temp[i++]; LP7jCt
a = temp; =WF@S1
} else { Fu?_<G%Ynp
data[k] = temp[j--];
w)go79
b = temp[j]; c 9gm%
} s'/_0
} /hg^hF
} J}Z\I Y,
u YFy4E3
/** %b
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* @param data 0(5qVJ12
* @param l 3#fg
2
* @param i b7'A5]X
*/ cooicKS7
private void insertSort(int[] data, int start, int len) { *W=1yPP
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {'P?wv
} \Ogs]4
} E08!a
} r
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} }K.)yv n
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堆排序: cgcU2N6y;
9R+ qw
package org.rut.util.algorithm.support; (CAVOed
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import org.rut.util.algorithm.SortUtil; JWM4S4yZHR
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/** /L`qOr2E
* @author treeroot i @M^l`w
* @since 2006-2-2 , Sf:R4=
* @version 1.0 c#9=o;1El
*/ j`u2\ ;
public class HeapSort implements SortUtil.Sort{ WYvcN8F
f#38QP-T
/* (non-Javadoc) <@>icDFEHn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gBgaVG
*/ G #$r)S
public void sort(int[] data) { rJ4A9d3:
MaxHeap h=new MaxHeap(); mst;q@
h.init(data); 'uqY%&U
for(int i=0;i h.remove(); W'zI~'K
System.arraycopy(h.queue,1,data,0,data.length); @gx]3t*]I
} YFcMU5_F
]7,0}q.
private static class MaxHeap{ Q9X+H4`}y
Q >h7H{c
void init(int[] data){ 0 4ceDe
this.queue=new int[data.length+1]; !9S!zRy@
for(int i=0;i queue[++size]=data; R-Tf9?)
fixUp(size); TY+Rol;!
} sEb*GF*.V
} lR
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]o9^?iU]
private int size=0; Q:b>1
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private int[] queue; Re;[S[D7
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public int get() { W1}d6Sbg
return queue[1]; =b3<}]
} -!j5j:RR
[r1\FF@v,
public void remove() { > W^"*B
SortUtil.swap(queue,1,size--); )P W Zc?M
fixDown(1); zM%2h:*+{
} EzU=q
E
file://fixdown ]D>\Z(b
private void fixDown(int k) { x50ZwV&j
int j; 78'3&,+si
while ((j = k << 1) <= size) { N,ihQB5
if (j < size %26amp;%26amp; queue[j] j++; Xj6?,J
if (queue[k]>queue[j]) file://不用交换 s=&x%0f%
break; `g'9)Xf4KT
SortUtil.swap(queue,j,k); TwZmZE ?!
k = j; G{'`L)~3N
} \S#![NC
} Q=498Y~x
private void fixUp(int k) { ynq^ztBVe
while (k > 1) { l5Q-M{w0x
int j = k >> 1; d?GB#N|+g
if (queue[j]>queue[k]) Eye.#~
break; dr=h;[Q'
SortUtil.swap(queue,j,k); ?&XpwJw:~
k = j; om0g'Qa
} >`
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} 35#"]l"
w2]]##J
} Kb#Z(C9
csv;u'
}
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SortUtil: )O6_9f_
]%6XE)
package org.rut.util.algorithm; <`=(Ui$fD
O&PrO+&
import org.rut.util.algorithm.support.BubbleSort; FHyyZ{"
import org.rut.util.algorithm.support.HeapSort; wn>?r
?KIB
import org.rut.util.algorithm.support.ImprovedMergeSort; lDtl6r/
import org.rut.util.algorithm.support.ImprovedQuickSort; Ix+\oq,O
import org.rut.util.algorithm.support.InsertSort; >f~y2YAr
import org.rut.util.algorithm.support.MergeSort; ?wj1t!83
import org.rut.util.algorithm.support.QuickSort; L%[b6<
import org.rut.util.algorithm.support.SelectionSort; &_<!zJ;Hn
import org.rut.util.algorithm.support.ShellSort; zqGo7;;#
#7,;/rtO7
/** 8CGjI?j
* @author treeroot IaYy5Rw
* @since 2006-2-2 G+W0X
* @version 1.0 /: }"Z b
*/ ~`CWpc:
public class SortUtil { 4wx_@8
public final static int INSERT = 1; k9oLJ<.k
public final static int BUBBLE = 2; e_t""h4D
public final static int SELECTION = 3; af;~<oa
public final static int SHELL = 4; i{nFk',xX
public final static int QUICK = 5; Xp_G9I,+
public final static int IMPROVED_QUICK = 6; p V`)
public final static int MERGE = 7; %b3s|o3An
public final static int IMPROVED_MERGE = 8; JQ"w{O
public final static int HEAP = 9; L=-v>YL+
"s
rRlu
public static void sort(int[] data) { |7E1yu
sort(data, IMPROVED_QUICK); jf~-;2
} @6z]Xb
private static String[] name={ 8\_ YP3
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #bdSH)V
}; -ZE]VO*F
C\5"Kb
private static Sort[] impl=new Sort[]{ : x@j)&
new InsertSort(), ZuVucP>>_d
new BubbleSort(), =MokbK2
new SelectionSort(), GMYfcZ/,K
new ShellSort(), i.6+CA
new QuickSort(), -|3feYb'
new ImprovedQuickSort(), }E](NvCq
new MergeSort(), $]S*(K3U~
new ImprovedMergeSort(), 85]3y%f9
new HeapSort() C:@JLZB
}; HD{2nZT
VF] ~J=>i
public static String toString(int algorithm){ u(g0Ob
return name[algorithm-1]; t73" d#+
} M"<B@p]rk:
B|6_4ry0U
public static void sort(int[] data, int algorithm) { QwgP+ M+
impl[algorithm-1].sort(data); "1%YtV5R{
} EnnE@BJ"
6]5e(J{Fz
public static interface Sort { YO`V'6\
public void sort(int[] data); ?'r=>'6D
} |$a!Zx94^
HmZ*
public static void swap(int[] data, int i, int j) { d{G*1l(X
int temp = data; We*&\e+"T
data = data[j];
*B1%-
data[j] = temp; 0GP\*Y8
} "jMSF@lr
} k_hs g6Ur.