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。 k_,wa]ws$
插入排序: \jR('5DcB
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package org.rut.util.algorithm.support; II,snRD
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import org.rut.util.algorithm.SortUtil; 9e aqq
/** V
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* @author treeroot GS*Mv{JJ
* @since 2006-2-2 ezz;NH
* @version 1.0 __mnz``/Y
*/ dRhsnT+KX
public class InsertSort implements SortUtil.Sort{ j]6c_r3
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/* (non-Javadoc) :6T8\W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AcoU.tpP
*/
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public void sort(int[] data) { |Q|vCWel{
int temp; h=x{
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;:`0:Ao.
}
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} 5eL_iNqJM
} G+k~k/D 6
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} R3dt-v
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冒泡排序: >}I BPC
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package org.rut.util.algorithm.support; Fv!KLw@
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import org.rut.util.algorithm.SortUtil; o6b\
w
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/** o$XJSz|6
* @author treeroot f7du1k3
* @since 2006-2-2 H)5V \
* @version 1.0 MJ%gF=$X
*/ {>]7xTpwZ
public class BubbleSort implements SortUtil.Sort{ Qzh`x-S
;ND)h pD+
/* (non-Javadoc) 8lJMD %Df:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )=9EShz!
*/ zZh\e,*
public void sort(int[] data) { C)H1<Br7
int temp; +\D?H.P
for(int i=0;i for(int j=data.length-1;j>i;j--){ uG:xd0X+W
if(data[j] SortUtil.swap(data,j,j-1); 4Yx\U
} i0jR~vF
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} $%GW~|S\C
} G&DL)ePu]m
} wF\5 X
Fx]}<IudA^
} 7%7 \2!0J}
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选择排序: PKK18E}{%^
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package org.rut.util.algorithm.support; qiyX{J7Z
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import org.rut.util.algorithm.SortUtil; "'9[c"Iz
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/** +`p@md2L1
* @author treeroot QKAt%"1&
* @since 2006-2-2 ?*K{1Ghf
* @version 1.0 W&'[Xj
*/ Up*.z\|'y
public class SelectionSort implements SortUtil.Sort { MmL)CT
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/* YB?5s`vr9d
* (non-Javadoc) ]hC6PKJU
* 1 Vq)& N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pf%B
*/ o
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public void sort(int[] data) { R>CIEL
int temp; 84|oqwZO
for (int i = 0; i < data.length; i++) { \[CPI`yQe
int lowIndex = i; C\RJ){dk
for (int j = data.length - 1; j > i; j--) { 2g`<*u*
if (data[j] < data[lowIndex]) { Kc,=J?Ob
lowIndex = j; i p"LoCE
} {g@?\
} wusj;v4C4M
SortUtil.swap(data,i,lowIndex); QGkMT+A
} PQJI~u9te}
} ='U>P(
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} G Ch]5\
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Shell排序: by0@G"AE+
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package org.rut.util.algorithm.support; 9irT}e
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import org.rut.util.algorithm.SortUtil; mcgkNED
lq[o2\
/** UFOUkS
F
* @author treeroot lBN1OL[N
* @since 2006-2-2 \YN(rD-
* @version 1.0 WA1h|:Z
*/ w1 5QqhlK
public class ShellSort implements SortUtil.Sort{ UifuRmn
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/* (non-Javadoc) f*tKj.P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %k8H'w\
*/ L';b908r2
public void sort(int[] data) { {<J(*K*\Jo
for(int i=data.length/2;i>2;i/=2){ UU;U,q
for(int j=0;j insertSort(data,j,i); AJWV#J%nB
} QY}1i .f
} *41
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insertSort(data,0,1); a"Q> K7K
} Kx<T;iJ}
$(A LxC
/** gfU@`A_N"
* @param data $6Az\Iu *
* @param j
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* @param i >v9@p7Dn
*/ 6U!zc]>
private void insertSort(int[] data, int start, int inc) { A."]6R<
int temp; 3{"M N=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K H&o`U(}
} R&P}\cf8T
} "gQA|NHwV
} +`_Km5=
8F(Vd99I
} >M-ZjT>
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快速排序: Of?3|I3 l
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package org.rut.util.algorithm.support; |(Q !$
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import org.rut.util.algorithm.SortUtil; &E +2
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/** 'v?"TZ
* @author treeroot ?]In@h-
* @since 2006-2-2 3H_%2V6#V1
* @version 1.0 AhauNS^"{R
*/ [/'=M h
public class QuickSort implements SortUtil.Sort{ {CH *?|t
l+n0=^ Z
/* (non-Javadoc) EDAVU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y%NZ(Y,v
*/ ~P@6fK/M
public void sort(int[] data) { @+EO3-X5
quickSort(data,0,data.length-1); @9ndr$t
} *<rBV`AP
private void quickSort(int[] data,int i,int j){ n `Ry!
int pivotIndex=(i+j)/2; UX!)\5-
file://swap zmdu\:_X9
SortUtil.swap(data,pivotIndex,j); cE SSSH!m
_a[)hu8q.
int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); ){S/h<4m
if((k-i)>1) quickSort(data,i,k-1); U?W?VEOO!7
if((j-k)>1) quickSort(data,k+1,j); j 5{"j
f;Uf=.#F
} j$Unw
/** 9d8bh4[
* @param data ;c;5O@R}3
* @param i ouO<un
* @param j x}(p\Efx
* @return 1 ^q~NYTK
*/ %hO/2u
private int partition(int[] data, int l, int r,int pivot) { Uc>$w?oA
do{ ~Q36lR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WAWy3i
SortUtil.swap(data,l,r); T
7EkRcb
} !y 7SCz
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while(l SortUtil.swap(data,l,r); d|Q_Z@;JF
return l; 530Z>q
} H}}g\|r&
%"{jNC?
} [t.x cO
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改进后的快速排序: _A5.
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package org.rut.util.algorithm.support; X@cO`P
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import org.rut.util.algorithm.SortUtil; .e|VW)
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/** G;k#06
* @author treeroot 6B .x=
* @since 2006-2-2 [flx/E
* @version 1.0 "T0s7LWp
*/ ~o?(O1QY
public class ImprovedQuickSort implements SortUtil.Sort { SZ )AO8&
,]* MI"
private static int MAX_STACK_SIZE=4096; 6'YsSde".
private static int THRESHOLD=10; NKJ+DD:'
/* (non-Javadoc) a
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {T2=bK~
*/ fRT4,;
public void sort(int[] data) { 0Xx&Z8E
int[] stack=new int[MAX_STACK_SIZE]; 64jFbbd-/
Tu*"+*r>s
int top=-1; SuuLB6{u3
int pivot; )~CnDk}^R
int pivotIndex,l,r; G$T#ql
L%sskV(
stack[++top]=0; YKtF)N;m]
stack[++top]=data.length-1; F-SD4a
z&x3":@u<
while(top>0){ =FfxHo1k
int j=stack[top--]; *W&}}iL
int i=stack[top--]; t7].33%\
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pivotIndex=(i+j)/2; /6@~XO)w
pivot=data[pivotIndex]; jXu)%<
/CW
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SortUtil.swap(data,pivotIndex,j); d} {d5-_a
!da[#zK
file://partition ']]5xH*U
l=i-1; sH_5.+,`
r=j; Z&w/JP?
do{ `<3xi9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /yhGc}h
SortUtil.swap(data,l,r); Jq8CII
} $MPh\T
while(l SortUtil.swap(data,l,r); A.@/~\
SortUtil.swap(data,l,j); yR|Beno
Mb0l*'ZF
if((l-i)>THRESHOLD){ nz%{hMNYH
stack[++top]=i; zUNWcv!& "
stack[++top]=l-1; l]wjH5mz=i
} 0[SJ7k19
if((j-l)>THRESHOLD){ S.Rqu+
stack[++top]=l+1; oMNgyAp^
stack[++top]=j; +?I1Og
} { t1|6R0
F!yr};@^p
} _${//`ia=
file://new InsertSort().sort(data); S>y(3E]I
insertSort(data); `mt.=d
} _pZaVx
/** F]L$xU
* @param data =iZj&B X
*/ S, g/2k*
private void insertSort(int[] data) { hynX5,p;.
int temp; dd=';%?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G,]%dZHe
} R qnT*
} p#fd+
} Kx[u9MD
7=e!k-G
} HXY,e$c#y
=:~%$5[[
归并排序: }g@5%DI]
yv&VK ht
package org.rut.util.algorithm.support; Uw:gJ9
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import org.rut.util.algorithm.SortUtil; Y%"6
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/** Ta0Ln
* @author treeroot 4PsJs<u
* @since 2006-2-2 6.|Qyk*
* @version 1.0 wy)I6`v
*/ -kZOve|5
public class MergeSort implements SortUtil.Sort{ P*M$^p
nm3/-Q},
/* (non-Javadoc) Q
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n@"h^-
*/ ?~g X7{>
public void sort(int[] data) { :fW\!o8Z2
int[] temp=new int[data.length]; c/bIt
mergeSort(data,temp,0,data.length-1); d
6$,N|
} H|]~(.w 1}
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private void mergeSort(int[] data,int[] temp,int l,int r){ J#L"kz
int mid=(l+r)/2; M1sR+e$"
if(l==r) return ; p~h)@
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); Pn;Tg7oz
for(int i=l;i<=r;i++){ R,'`
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temp=data; GNIZHyT(O
} vXA+4 ?ZG
int i1=l; >^!qxb-
int i2=mid+1; x<-n}VK\
for(int cur=l;cur<=r;cur++){
equTKM
if(i1==mid+1) 8T2iqqG/1
data[cur]=temp[i2++]; {Al}a`da
else if(i2>r) pMfP3G7V
data[cur]=temp[i1++]; '&<T;V%
else if(temp[i1] data[cur]=temp[i1++]; k'hJ@6eKS
else Gx.iZOOH/
data[cur]=temp[i2++]; 9sR?aW^$,/
} mV58&SZT
} 9)Jc'd|
AzwG_XgM)
} ML|O2e
[kjm EMF9i
改进后的归并排序: ^9 g+\W
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package org.rut.util.algorithm.support; @\_l%/z{
:mpR}.^hv
import org.rut.util.algorithm.SortUtil; .^Z^L F
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/** v;r!rZX
* @author treeroot mnwYv..ePz
* @since 2006-2-2 6N^sUc0s
* @version 1.0 >>'t7U##
*/ Lh"!Z
public class ImprovedMergeSort implements SortUtil.Sort { HalkNR-eEm
?[|T"bE5[
private static final int THRESHOLD = 10; e{8j(` (;#
9w%|Nk>=>
/* rps2sXGr
* (non-Javadoc) ^JKV~+ Q
* tBZ&h`
V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^3qo%=i
*/ &$!'Cw`,
public void sort(int[] data) { 99<0xN(25
int[] temp=new int[data.length]; m)]A$*`<
mergeSort(data,temp,0,data.length-1); ~BSE8M+r
} bkZ~O=uv$-
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private void mergeSort(int[] data, int[] temp, int l, int r) { cjd Z.jR2
int i, j, k; ylEQeN
int mid = (l + r) / 2; DKcg
if (l == r) \8 I>^4t'/
return; C9`J6Uu
if ((mid - l) >= THRESHOLD) K1F,M9 0]
mergeSort(data, temp, l, mid); &?-LL{W{
else 7xmyjy%c
insertSort(data, l, mid - l + 1); vw'`t6
if ((r - mid) > THRESHOLD) ?-"%%#
mergeSort(data, temp, mid + 1, r); n$ri:~s
else (($"XOU
insertSort(data, mid + 1, r - mid); |#r[{2sS
8, >YB+Hb
for (i = l; i <= mid; i++) { z&"-%l.b@}
temp = data; u)DhkF|
} #\Q{?F!4
for (j = 1; j <= r - mid; j++) { %/86}DCfE?
temp[r - j + 1] = data[j + mid]; j70]2NgX
} ZW]Q|vPh4U
int a = temp[l]; 7,\Uk|
int b = temp[r]; m}x&]">9
for (i = l, j = r, k = l; k <= r; k++) { |CC(`<\R
if (a < b) { `@Q%}J
data[k] = temp[i++]; ~BNLzt3%O
a = temp; w_gPX0N}3n
} else { !_EaF`oh(
data[k] = temp[j--]; Mbt}G|;8H7
b = temp[j]; I1H} 5bf3
} >UP{=`
} ed,w-;(n~
} >@2l/x8;
Dn6 k,nVh
/** s[V$fvW
* @param data <By6%<JTn
* @param l p8>.Q/4
* @param i ?D].Za^km
*/ Pgy&/-u
private void insertSort(int[] data, int start, int len) { +&W%]KEh
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q+MV@8w
} M>mk=-l
} v}=3
} reyN5n~4U
} zS@"ITy
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堆排序: KPGX/l
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package org.rut.util.algorithm.support; 0 L34)W
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import org.rut.util.algorithm.SortUtil; YU89m7cc'
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/** +fgF &.
* @author treeroot X7I"WC1ncz
* @since 2006-2-2 <p48?+K9
* @version 1.0 ~zklrBn&
*/ y\'t{>U/
public class HeapSort implements SortUtil.Sort{ -%&_LE9ZtS
q;T3bxp+
/* (non-Javadoc) &S}i)Nu6J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
;;zKHS
*/ U&fOsx?"
public void sort(int[] data) { U/ncD F%C
MaxHeap h=new MaxHeap(); cxTP4\T\E
h.init(data); rz]0i@ehv'
for(int i=0;i h.remove(); &^ sgR$m
System.arraycopy(h.queue,1,data,0,data.length); >K{/ Jx&
} IT,TSs/Y
/t-m/&>
private static class MaxHeap{ +$MNG
H61,pr>
void init(int[] data){ Bi"7FF(z
this.queue=new int[data.length+1]; tylMJ$ 9*.
for(int i=0;i queue[++size]=data; x%ZgLvdp,
fixUp(size); qll)
} ,3G8afo
} EDR;" G(N
ta>:iQa
private int size=0; u,:GJU
(C#9/WO?
private int[] queue; {:&t;5qz^
DiK@>$v
public int get() { i|X ;n
return queue[1]; Azx4+`!-
} q$EicH}k8
IqK??KSC
public void remove() { N[%^0T$
SortUtil.swap(queue,1,size--); (F$V m
fixDown(1); l`L}*Q- 5
} ]8(_{@/
file://fixdown *rO#UE2
private void fixDown(int k) { UV%Al)3
int j; r;`6ML[5Vx
while ((j = k << 1) <= size) { ;d1\2H
if (j < size %26amp;%26amp; queue[j] j++; D6,rb 9
if (queue[k]>queue[j]) file://不用交换 4@PH5z
break; bk E4{P"
SortUtil.swap(queue,j,k); }2Y:#{m
k = j; {g?$u
} _B`'1tNx
} 5;+OpB
private void fixUp(int k) { B\a-Q,Wf
while (k > 1) { 4,m
aA
int j = k >> 1; <4z |"(
if (queue[j]>queue[k]) B$aA=+<S
break; :E/]Bjq$;
SortUtil.swap(queue,j,k); {n8mE,;M
k = j; 3^l@!Qw
} +K4d(!Sb
} *%L:soM'Ll
`7qZ6Z3z@
} kP9DCDO`[5
.P\wE";
} +Zu*9&Cx
`}gjfu -'\
SortUtil: vn@9Sqk
SMVn2H@
package org.rut.util.algorithm; fu3/ n@L
^PIUA'
import org.rut.util.algorithm.support.BubbleSort; _}.BZ[i
import org.rut.util.algorithm.support.HeapSort; MtC \kTW
import org.rut.util.algorithm.support.ImprovedMergeSort; V6Kw71'9
import org.rut.util.algorithm.support.ImprovedQuickSort; oLEqy
import org.rut.util.algorithm.support.InsertSort; m72r6Yq2@
import org.rut.util.algorithm.support.MergeSort; K_
P08
import org.rut.util.algorithm.support.QuickSort; T] \_[e:'
import org.rut.util.algorithm.support.SelectionSort; K1 M s
import org.rut.util.algorithm.support.ShellSort; Xc;W9e(U
(J8(_MF
/** Tj}H3/2
* @author treeroot J[rpMQ
* @since 2006-2-2 <zE,T@c
* @version 1.0 >K$9(
*/ Uk=jQfA*J
public class SortUtil { b: UTq
7^
public final static int INSERT = 1; [(U:1&x&
public final static int BUBBLE = 2; X>^St&B}fC
public final static int SELECTION = 3; X4LU/f<f
public final static int SHELL = 4; RnV
)*
public final static int QUICK = 5; E7-il;`cKn
public final static int IMPROVED_QUICK = 6; g$<Sh.4A
public final static int MERGE = 7; Md_S};!QN6
public final static int IMPROVED_MERGE = 8; 5y;texsj[
public final static int HEAP = 9; -@{5
u d
!E<y:$eH:
public static void sort(int[] data) { e;9Z/);#s
sort(data, IMPROVED_QUICK); }p 0\
}
L5/J
private static String[] name={ 6qQdTp{i
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [+EmV >Y
}; n46H7e(ej\
]ovP^]]V
private static Sort[] impl=new Sort[]{ ?|LR@M!S7
new InsertSort(), {fe[$KQ
new BubbleSort(), <eP`Lu"
new SelectionSort(), 9frLYJz"
new ShellSort(), !t/I
j ~o
new QuickSort(), f
QSP]?
new ImprovedQuickSort(), 33dHTV
new MergeSort(), &@CcH_d*
new ImprovedMergeSort(), (27bNKr
new HeapSort() v7x%V%K
}; ygoA/*s
Os--@5e
public static String toString(int algorithm){ OKs1irt5
return name[algorithm-1]; 0Z9>%\km_
} ^]}+s(
*#p}>\Y{
public static void sort(int[] data, int algorithm) { T.\=R
impl[algorithm-1].sort(data); ;oW#>!HrY
} *@`Sx'5!
Fd!Np7xw
public static interface Sort { D4nYyj1O3
public void sort(int[] data); 8,unq3
} JB.f7-
M?m Pi 3
public static void swap(int[] data, int i, int j) { M4[(.8iE
int temp = data; .d{@`^dh1]
data = data[j]; ,MH/lQq%
data[j] = temp; %mKM9>lf#
} *HiN:30DZ
} wq$+m(