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。 oeKl\cgFx
插入排序: aNM*=y`
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package org.rut.util.algorithm.support; zEQQ4)mA
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import org.rut.util.algorithm.SortUtil; %@(+`CCA
/** |:SV=T:
* @author treeroot 2@T0QJ
* @since 2006-2-2 wY8Vc"
* @version 1.0 &OFVqm^
*/ u`B/ 9-K)y
public class InsertSort implements SortUtil.Sort{ I;AS.y
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/* (non-Javadoc) pHk$_t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \8*j"@ !H
*/ CBdr1
public void sort(int[] data) { rp
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int temp; fFC9:9<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _@?I)4n|
} LDw.2E
} I_Z?'M
} k^JgCC+
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} q~18JB4WPJ
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冒泡排序: ?N+pWdi
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package org.rut.util.algorithm.support; IY~I=}
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import org.rut.util.algorithm.SortUtil;
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/** +|oLS_
* @author treeroot Z@m5hx&
* @since 2006-2-2 +yr~UP_
}
* @version 1.0 \2f?)id~
*/ x`p908S^
public class BubbleSort implements SortUtil.Sort{ ]LCL?zAzH!
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/* (non-Javadoc) 9l[C&0w#\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &f A1kG%
*/ !oRN,m[7)p
public void sort(int[] data) { &B+_#V=X@
int temp; BB/c5?V
for(int i=0;i for(int j=data.length-1;j>i;j--){ H93ug1,
if(data[j] SortUtil.swap(data,j,j-1); -e51/lhpd
} RU.MJ
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} Q^Vch(`&P
} +U1fa9NSn
} isnpSN"z
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} fA V.Mj-
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选择排序: pP\^bjI
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package org.rut.util.algorithm.support; s}^W2
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import org.rut.util.algorithm.SortUtil; d.>O`.Mu)}
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/** vXSpn71Jb
* @author treeroot :h0!giqoQ
* @since 2006-2-2 93.L887
* @version 1.0 : T4ap_Ycq
*/ )Ps<u- V
public class SelectionSort implements SortUtil.Sort { xnZ
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/* {!4ZRNy(k
* (non-Javadoc) .?F`H[^)^u
* Hw#yw g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VM3)L>x]/
*/ JS >"j d#
public void sort(int[] data) { Nc(A5*
int temp; Ys5Iqj=mp
for (int i = 0; i < data.length; i++) { V2 }.X+u&<
int lowIndex = i; {mHxlG)
for (int j = data.length - 1; j > i; j--) { >BMtR0
if (data[j] < data[lowIndex]) { gi/W3q3c6
lowIndex = j; XOZ@ek)LY
} taSYR$VJ
} JkNRXC:
SortUtil.swap(data,i,lowIndex); %8"Aq
} I\82_t8
} ,ce$y4%(
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} BLo=@C%w5
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Shell排序: !`dn# j
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package org.rut.util.algorithm.support; ( 2KopL
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import org.rut.util.algorithm.SortUtil; L<N=,~
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/** V#-8[G6Ra
* @author treeroot |=Pw-uk
* @since 2006-2-2 L3C'q
* @version 1.0 Oyjhc<6
*/ DM !B@
public class ShellSort implements SortUtil.Sort{ 5bprhq-7
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/* (non-Javadoc) K&iU+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X
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*/ )G|'PXI@,
public void sort(int[] data) { /.@"wAw:
for(int i=data.length/2;i>2;i/=2){ ?7aeY5p
for(int j=0;j insertSort(data,j,i); k Rp$[^ma
} &;%LTF@I,
} @w[HXb
insertSort(data,0,1); zO)3MC7l*
} )m(?U
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/** 7brC@+ZD
* @param data DqBiBH[%h
* @param j ,tHV
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* @param i ~fF;GtP
*/ |VML.u:N
private void insertSort(int[] data, int start, int inc) { Wc{/K6]f
int temp; XRWy#Pj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kR;Hb3hb
} a.s5>:Ct
} Jm*wlN
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} (K|7T{B
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} kTs.ps8ei
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快速排序: #qdfr3
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package org.rut.util.algorithm.support; Meo.
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import org.rut.util.algorithm.SortUtil; 9g`o+U{
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/** /}$D&KwYg
* @author treeroot 8iUj9r_
* @since 2006-2-2 Lk1e{!a
* @version 1.0 NuC+iC$_/
*/ <GO 5}>}p8
public class QuickSort implements SortUtil.Sort{ ppK`7J>Z
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/* (non-Javadoc) %*Lv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~~X-$rtU
*/ ^s?=$&8f![
public void sort(int[] data) { xv>]e <":
quickSort(data,0,data.length-1); :[.**,0R
} Q6rvTV'vv
private void quickSort(int[] data,int i,int j){ gX!-s*{E
int pivotIndex=(i+j)/2; swLrp
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file://swap <#F@OU
SortUtil.swap(data,pivotIndex,j); Q?]-/v
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int k=partition(data,i-1,j,data[j]); )@[##F2
SortUtil.swap(data,k,j); .I
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if((k-i)>1) quickSort(data,i,k-1); zX}t1:nc
if((j-k)>1) quickSort(data,k+1,j); VQwF9Iq]`
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} mL]a_S{H
/** _mc-CZ
* @param data + Un(VTD
* @param i kBg8:bo~
* @param j /l1OC(hm
* @return :.aMhyh#*
*/ qvG@kuz8g5
private int partition(int[] data, int l, int r,int pivot) { qPF`=#
do{ jiqE^j3;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2R];Pv
SortUtil.swap(data,l,r); 1U6z2i+y
} M)1Y7?r]
while(l SortUtil.swap(data,l,r); h'ik19
return l; x7ZaI{
} +FJ+,|i
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} zv0bE?W9
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改进后的快速排序: <NXJ&xs-+
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package org.rut.util.algorithm.support; qV79bK
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import org.rut.util.algorithm.SortUtil; WT63ve
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/** 5XoM)
* @author treeroot Dl@Jj?zc
* @since 2006-2-2 gy>B
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* @version 1.0 Q@KCODi
*/ S`8Iu[Ma
public class ImprovedQuickSort implements SortUtil.Sort { 5Ky(C6E$s
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private static int MAX_STACK_SIZE=4096; hjD%=Ri0Z
private static int THRESHOLD=10; ?W2u0N
/* (non-Javadoc) rld8hFj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4-m6e$p;
*/ IGNU_w4j
public void sort(int[] data) { U0U y
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int[] stack=new int[MAX_STACK_SIZE]; 6=:s3I^
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int top=-1; _ee<i8_Va
int pivot; TJCE6QG
int pivotIndex,l,r; e|N~tUVrrN
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stack[++top]=0; P ; h8
stack[++top]=data.length-1; F?^L^N^
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while(top>0){ F3hG8YX
int j=stack[top--]; "hi03k
int i=stack[top--]; 5th?m>
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pivotIndex=(i+j)/2; 1yVhO2`7]
pivot=data[pivotIndex]; te4=
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SortUtil.swap(data,pivotIndex,j); l dqU#{
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file://partition H@1}_d
l=i-1; Z?xRSi2~7
r=j; \<ysJgqUG
do{ ~Up{zRD"B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); oKb"Ky@s
SortUtil.swap(data,l,r); ?}uuTNLl)
} )+R n[MMp
while(l SortUtil.swap(data,l,r); yM~bUmSg
SortUtil.swap(data,l,j); =3 Vug2*wd
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if((l-i)>THRESHOLD){ s&Y"a,|Z
stack[++top]=i; ?w+ V:D
stack[++top]=l-1; \5 rJ
} ^Kg n:l
if((j-l)>THRESHOLD){ U(#JC(E-#
stack[++top]=l+1; aydNSgu
stack[++top]=j; x x4GP2
} [}]yJ+)
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} 9!
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file://new InsertSort().sort(data); 2 rr=FJ
insertSort(data); X\/M(byn
} S>r",S
/** 6y~F'/ww
* @param data SI=u-'%
*/ xhOoZ-
private void insertSort(int[] data) { (
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int temp; &iVdqr1,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P.qzP/Ny
} Id##367R
} (v%24bv
} c~?Zmdn:
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} msM1K1er
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归并排序: kQ}n~Hn
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package org.rut.util.algorithm.support; s0^(yEcq
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import org.rut.util.algorithm.SortUtil; KGHSEZi]
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/** qfyZda0d
* @author treeroot =i&,I{3
* @since 2006-2-2 o[T+/Ej&
* @version 1.0 CMaph
*/ C=/B\G/.9
public class MergeSort implements SortUtil.Sort{ v$W[(
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/* (non-Javadoc) R<Lf>p>_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RI0^#S_{
*/ ||_hET
public void sort(int[] data) { `;E/\eG"
int[] temp=new int[data.length]; uv27Vos
mergeSort(data,temp,0,data.length-1); 1!~cPD'F
} {K]5[bMT
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private void mergeSort(int[] data,int[] temp,int l,int r){ 9)ALJd,M
int mid=(l+r)/2; _!R$a-
if(l==r) return ; 6:]N%
mergeSort(data,temp,l,mid); :x)H!z
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mergeSort(data,temp,mid+1,r); "y,YC M`
for(int i=l;i<=r;i++){ _*fNa!@hY
temp=data; g[3LPKQ
} {`QHg O
int i1=l; [|DKBJ
int i2=mid+1; En?V\|,
for(int cur=l;cur<=r;cur++){ tcuwGs>_
if(i1==mid+1) lmvp,BzC
data[cur]=temp[i2++]; 50W+!'
else if(i2>r) _\}'5nmw\
data[cur]=temp[i1++]; CWn\KR
else if(temp[i1] data[cur]=temp[i1++]; O1J&Lwpk,
else xc:E>-
data[cur]=temp[i2++];
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} #) aLD0p
} QPJ\Iu@D$
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} Nr~$i% [
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改进后的归并排序: s[yWBew
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package org.rut.util.algorithm.support; fu/8r%:h
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import org.rut.util.algorithm.SortUtil; q@|+`>h
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/** nT6y6F_e
* @author treeroot GXtMX ha,
* @since 2006-2-2 <v_=k],W
* @version 1.0 )'_[R@ThB
*/ A`c%p7Z%
public class ImprovedMergeSort implements SortUtil.Sort { 1i76u!{U
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private static final int THRESHOLD = 10; Z/#_Swv
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/* O
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* (non-Javadoc) H U|.5tP
* :C~Ar]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I"07x'Ahq3
*/ uN|A}/hr]
public void sort(int[] data) { Xn6#q3;^|
int[] temp=new int[data.length]; MMM
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mergeSort(data,temp,0,data.length-1); kRp]2^}\s\
} m>@hh#kBg
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private void mergeSort(int[] data, int[] temp, int l, int r) { [{znwK@
int i, j, k; !#tVQ2O
int mid = (l + r) / 2; _C?j\Wy
if (l == r) *]6g-E?:@
return; L:R4&|E/t
if ((mid - l) >= THRESHOLD) ~ZHjP_5Q
mergeSort(data, temp, l, mid); *c0H_8e
else
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insertSort(data, l, mid - l + 1); /k#-OXP~
if ((r - mid) > THRESHOLD) "HMEoZ
mergeSort(data, temp, mid + 1, r); Wv;0PhF
else +#}GmUwPG$
insertSort(data, mid + 1, r - mid); =
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for (i = l; i <= mid; i++) { h [TwaR
temp = data; Ma YU%h0
} ?YhDjQs
for (j = 1; j <= r - mid; j++) { ]%\,.&=hT
temp[r - j + 1] = data[j + mid]; 615Ya<3f8
} *Rgr4-eS
int a = temp[l]; wj)LOA0
int b = temp[r]; MqyjTY::Xg
for (i = l, j = r, k = l; k <= r; k++) { +&GV-z~o
if (a < b) { j]u!;]
data[k] = temp[i++]; 9^gYy&+>6]
a = temp; 48^-]};
} else { oV|O`n
data[k] = temp[j--]; :6n#y-9^1
b = temp[j]; =%Y1] F
} +C(-f
} ]?9*Vr:P^
} GABZsdFZ!
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/** aukcO;oG<
* @param data Y]z
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* @param l fr17|#L+s
* @param i '-iEbE
*/ SSK}'LQ
private void insertSort(int[] data, int start, int len) { "J VIkC
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r`H}f#.KR
} :@A&HkF
} wk(25(1q
} KX)n+{
} (q)}`1d'
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堆排序: i8iT}^
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package org.rut.util.algorithm.support; J_Lmy7~xbD
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import org.rut.util.algorithm.SortUtil; |OeyPD#
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/** KVi6vdgD
* @author treeroot dwO fEYC
* @since 2006-2-2 l.Q
* @version 1.0 W .a>K$
*/ ~7m`p3W@
public class HeapSort implements SortUtil.Sort{ M/3;-g
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/* (non-Javadoc) ^e:z ul{;]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Y#Q'r?
*/ ,=/9Ld2w9
public void sort(int[] data) { u 3WU0Z`
MaxHeap h=new MaxHeap(); |G j.E
h.init(data); =RoE=)1&-
for(int i=0;i h.remove(); L&\W+k
System.arraycopy(h.queue,1,data,0,data.length); xIdb9hm<
} Ly=.
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private static class MaxHeap{ ;jPsS^X
{^]qaQ[5N
void init(int[] data){ L]Tj]u)
this.queue=new int[data.length+1]; WowKq0sn
for(int i=0;i queue[++size]=data; fu7x,b0p
fixUp(size); }7PJr/IuF
} `bP`.Wm
} hY)zKX_r
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private int size=0; D#GuF~-F!R
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private int[] queue; gS(3 m_
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public int get() { =dXHQU&Q
return queue[1]; '5}hm1,
} \kE0h\
g[cnaS|?
public void remove() { %1&X+s3
SortUtil.swap(queue,1,size--); HT7,B(.}
fixDown(1); tI^91I
} #JUh"8N'
file://fixdown
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private void fixDown(int k) { GcM1*)$ 4
int j; tP_.-//
while ((j = k << 1) <= size) { m"L^tSD~
if (j < size %26amp;%26amp; queue[j] j++; 2Z; !N37U
if (queue[k]>queue[j]) file://不用交换 QPuc{NcB>
break; g?
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SortUtil.swap(queue,j,k); /#9P0@Y
k = j; A &}]:4@{
} 6AIqoX*p
} yp~z-aRa
private void fixUp(int k) { lhM5a
\
while (k > 1) { @tT`s^e
int j = k >> 1; W@!qp
if (queue[j]>queue[k]) Mg >%EH/'
break; gY+d[3N
SortUtil.swap(queue,j,k); (-ELxshd
k = j; bAlty}U
} vhMoCLb
} <v1H1'gv
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} 4EYD5
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} iKq_s5|sW
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SortUtil: r?KRK?I
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