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。 ARid
插入排序: 2{-'`lfM%
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package org.rut.util.algorithm.support; !*B1Eo--cN
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import org.rut.util.algorithm.SortUtil; 4--[.j*W
/** sHMZ'9b
* @author treeroot H|B4.z
* @since 2006-2-2 (w,
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* @version 1.0 h4? 'd+K
*/ 6\/(TW&
public class InsertSort implements SortUtil.Sort{ iD!]I$
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/* (non-Javadoc) f(*^zga,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'uF"O"*
*/ E`UEl$($
public void sort(int[] data) { ;jT@eBJ
int temp; kT{d pGU9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f!##R-A
} G(7WUMjl
} 9GVv[/NAb
} q*K.e5"'
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} }JBLzk5|
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冒泡排序: ^y&sKO
1bJrEXHXy
package org.rut.util.algorithm.support; | D,->k
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import org.rut.util.algorithm.SortUtil; 1mz72K
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/** BjCg!6`XF
* @author treeroot x]jJ
* @since 2006-2-2 X/`M'8v.%
* @version 1.0 *`wgqin
*/ A;C)#Q/
public class BubbleSort implements SortUtil.Sort{ G8!* &vR/
7
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/* (non-Javadoc) \TXCq@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %u02KmV.
*/ 5Qgh\4
public void sort(int[] data) { ~i/K7qZ
int temp; .Zv uhOn^
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0:4w@"Q
if(data[j] SortUtil.swap(data,j,j-1); qEV>$>}
} VTvNn
} G^/8lIj
} Mi&jl_&
} TbA=bkj[4
\ POQeZ
} R3%&\<a)9
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选择排序: DS1_hbk
nf9NJ_8}4H
package org.rut.util.algorithm.support; 16R0#Q/{+*
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import org.rut.util.algorithm.SortUtil; 0P_3%
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/** ptEChoZ6
* @author treeroot h1.<\GO
* @since 2006-2-2 Y|96K2BR
* @version 1.0 j?y_ H[Z
*/ L4-v'Z;
public class SelectionSort implements SortUtil.Sort { :LEC[</yvl
MF/@Efjn
]
/*
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* (non-Javadoc) zsuXN *
* Ub-q0[6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $z5
*/ eJwHeG
public void sort(int[] data) { }:a:E~5y
int temp; 8[xl3=
for (int i = 0; i < data.length; i++) { EgT?Hvx:
int lowIndex = i; YPNG9^Y
for (int j = data.length - 1; j > i; j--) { IG=# 2 /$
if (data[j] < data[lowIndex]) { |#?:KvU97E
lowIndex = j; #J09Eka;J
} -{rUE +
} D>efr8Qd@
SortUtil.swap(data,i,lowIndex); `PApmS~}
.
} Vmf!0-
} !omf>CW;ud
0JM`*f%n
} Cmj+>$')0
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Shell排序: XdxSi"+
>qC,IQ'
package org.rut.util.algorithm.support; $;%k:&\f
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import org.rut.util.algorithm.SortUtil; G"|`&r@
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/** K)[DA*W
* @author treeroot S{#L7S
* @since 2006-2-2 K]c\3[vR
* @version 1.0 .bvEE
*/ dcbE<W#ss
public class ShellSort implements SortUtil.Sort{ &Y3r'"
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/* (non-Javadoc) pa8R;A70Dl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HS
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*/ N>Q~WXvV#
public void sort(int[] data) { ^(on"3sG
for(int i=data.length/2;i>2;i/=2){ !b 4v}70,
for(int j=0;j insertSort(data,j,i); s2*~n_B
} -h8@B+
} c1aIZ
insertSort(data,0,1); [h[@?8vB
} urK~]68
AMf{E
/** Jwt_d}ns
* @param data ^R7|x+
* @param j K|sk]2.
* @param i Vc*"Q8aZ~
*/ zSo(+ D
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private void insertSort(int[] data, int start, int inc) { ALXie86a8
int temp; 7w51UmO
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); P}8cSX9
} R;3nL[{U
} s_}q
} >7,?X_:A-1
0 n}2D7
} -"uOh,G}
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快速排序: It:,8
1=z6m7@'-
package org.rut.util.algorithm.support; 4U>g0
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import org.rut.util.algorithm.SortUtil; l#bE_PD;
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/** +*L<"@
* @author treeroot k$3Iv"gbx
* @since 2006-2-2 Cm%|hk>fQ
* @version 1.0 </]a`h]
*/ #sM`>KG6T1
public class QuickSort implements SortUtil.Sort{ uF<}zFS
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/* (non-Javadoc) zw[ #B #
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xVN(It7g
*/ fR>"d<;T
public void sort(int[] data) { jG["#5<?
quickSort(data,0,data.length-1); Q4ZKgcC
} @id!F<+%oD
private void quickSort(int[] data,int i,int j){ s((c@)M
int pivotIndex=(i+j)/2; GUn$IPOM
file://swap B]u !BBjC
SortUtil.swap(data,pivotIndex,j); lsA?|4`mn
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y
int k=partition(data,i-1,j,data[j]); sWv!ig_
SortUtil.swap(data,k,j); sZPyEIXie
if((k-i)>1) quickSort(data,i,k-1); 9%Qlg4~<s
if((j-k)>1) quickSort(data,k+1,j); *BHp?cn;F2
~yiw{:\
} _lrvK99
/** V@o#" gZ
* @param data {5Sy=Y
* @param i oLIgj,k{*
* @param j Zk~~`h
* @return EslHml#
*/ N"8'=wB
private int partition(int[] data, int l, int r,int pivot) { Y^tUcBm\
do{ =z!/:M
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); unc8WXW
SortUtil.swap(data,l,r); L<k(stx~
} Q6;bORN
while(l SortUtil.swap(data,l,r); =$SvKzN
return l; V 5D8z
} B&m6N,
. ZP$,
} yT|44
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改进后的快速排序: r;_*.|AH
TeRH@oI
package org.rut.util.algorithm.support; _$_,r H
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import org.rut.util.algorithm.SortUtil; *$Y_ %}
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/** '*D>/hn|:]
* @author treeroot .iYp9?t
* @since 2006-2-2 W.BX6
* @version 1.0 K-[;w$np0
*/ |7QSr!{_
public class ImprovedQuickSort implements SortUtil.Sort { ~S\,
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private static int MAX_STACK_SIZE=4096; Rxlz`&
private static int THRESHOLD=10; EY^?@D_<
/* (non-Javadoc) $8}'h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %7[q%S
*/ rvuasr~
public void sort(int[] data) { =q}Z2 OoYh
int[] stack=new int[MAX_STACK_SIZE]; Rj3ad 3z'E
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int top=-1; .uSVZqJ7
int pivot; _rg*K
int pivotIndex,l,r; ?[;>1+D
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stack[++top]=0; w=FU:q/
stack[++top]=data.length-1; NMS+'GRW
pS2u&Y"u|
while(top>0){ E24j(>
int j=stack[top--]; i.{.koH<
int i=stack[top--]; 3&6sQ-}*
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pivotIndex=(i+j)/2; _2hZGC%&E
pivot=data[pivotIndex]; @z^7*#vQv
~G1B}c]
SortUtil.swap(data,pivotIndex,j);
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file://partition 2fg
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l=i-1; p-xG&CU
r=j; (/FG#D.
do{ ]=PkgOJD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h>F"GR?U_(
SortUtil.swap(data,l,r); q4v:s
} Rg^ps
while(l SortUtil.swap(data,l,r); ;iW>i8
SortUtil.swap(data,l,j); M%WO
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if((l-i)>THRESHOLD){ a"`>J!
stack[++top]=i; WL?qulC}h1
stack[++top]=l-1; sX-@
>%l
} c
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if((j-l)>THRESHOLD){ axOEL:-|Bu
stack[++top]=l+1; Y<V$3h
stack[++top]=j; t37<<5A
} !f]kTs]j~
BS
]:w(}[
} T;]Ob3(BpW
file://new InsertSort().sort(data); `"o{MaFA
insertSort(data); virt[5w
} yy+:x/(N[
/** &*745,e
* @param data WrS>^\:
*/ q\-P/aN_
private void insertSort(int[] data) { F]fXS-@ c
int temp; U9K'O !i>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t1NGs-S3
} HYL['B?Wid
} 8/T,{J\
} PEg]z
4Y1dkg1y
} FmFjRYA W
Z*ag{N
归并排序: r`\@Fv,
=k>fW7e
package org.rut.util.algorithm.support; m41%?uC/
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import org.rut.util.algorithm.SortUtil; )7X$um
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/** [%O f
* @author treeroot pRzL}-[/v
* @since 2006-2-2
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* @version 1.0 4j8$&~/
*/ rNurzag
public class MergeSort implements SortUtil.Sort{ mi.,Z`]o
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/* (non-Javadoc) MkhD*\D
/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )+DDIq
*/ -2(?O`tZ
public void sort(int[] data) { IMBjI#\
int[] temp=new int[data.length]; -+M360
mergeSort(data,temp,0,data.length-1); o)>iHzR</
} i"xV=.
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private void mergeSort(int[] data,int[] temp,int l,int r){ 7XLqP
int mid=(l+r)/2; qWx{eRp d
if(l==r) return ; ve:Oe{Ie{
mergeSort(data,temp,l,mid); )8oN$20
mergeSort(data,temp,mid+1,r); J_fs}Y1q\
for(int i=l;i<=r;i++){ Pd-LDs+Ga
temp=data; dPbn[*:
} ~9xkiu5~
int i1=l; ^d@2Y0hH
int i2=mid+1; tRO=k34
for(int cur=l;cur<=r;cur++){ >rJ**y
if(i1==mid+1) cGR) $:
data[cur]=temp[i2++]; <*WGvCh%w
else if(i2>r) 3fA+{Y8S
data[cur]=temp[i1++]; IsShAi
else if(temp[i1] data[cur]=temp[i1++]; KVr9kcs
else Gz BPI'C
data[cur]=temp[i2++]; l~w^I|M^C
} seRf q&
}
/.=aA~|
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} lSlZ^.&
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改进后的归并排序: u{h67N
znSlSQpTv
package org.rut.util.algorithm.support; I$p1^8~L
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import org.rut.util.algorithm.SortUtil; .9WOTti
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/** =m F"D:s*
* @author treeroot >3pT).wH|M
* @since 2006-2-2 TOF V`7q;3
* @version 1.0 RwYFBc
*/ ?{jey_]M
public class ImprovedMergeSort implements SortUtil.Sort { S3i p?9
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private static final int THRESHOLD = 10; YM6
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/* )QRT/, ;c
* (non-Javadoc) }mzd23^W>P
* idGn{f((f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s^SU6P/]
*/ "(vK.-T
public void sort(int[] data) { Z^z{,
u;!
int[] temp=new int[data.length]; 2~l7WW+lx,
mergeSort(data,temp,0,data.length-1); F_9
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} k52IvB@2
,msP(*qoI
private void mergeSort(int[] data, int[] temp, int l, int r) { vd(S&&]o1
int i, j, k; *S"RU~1_
int mid = (l + r) / 2; dP(.l}O
if (l == r) /d,u"_=l
return; ~*"ZF-c,
if ((mid - l) >= THRESHOLD) C:}1r
mergeSort(data, temp, l, mid); T/2k2r4PD
else ]jC{o,?s
insertSort(data, l, mid - l + 1); h# KSKKNW
if ((r - mid) > THRESHOLD) bmK
mergeSort(data, temp, mid + 1, r); 1#%H!GKvTU
else 71Za!3+
insertSort(data, mid + 1, r - mid); pgiZA?r*<
2O*At%CzW
for (i = l; i <= mid; i++) { 6W{Nw<
temp = data; +Ugy=678Tr
} >
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for (j = 1; j <= r - mid; j++) { jex\5
temp[r - j + 1] = data[j + mid]; WW{_D
} '*65j
int a = temp[l]; dKCl#~LAI'
int b = temp[r]; 3)ox8,{%}
for (i = l, j = r, k = l; k <= r; k++) { %8|lAMTY7/
if (a < b) { -gk2$P-
data[k] = temp[i++]; i{TPf1OY`M
a = temp; R`E:`t4G
} else { -j]c(Q MA]
data[k] = temp[j--]; `B4Ilh"d
b = temp[j]; ~3M8"}X;L
} {6GX
?aw'
} az:}RE3o
} 1 :$#a
)^AZmUYZ
/** \8!CKnfs
* @param data
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* @param l Sn4xv2/
* @param i Knqv|jJVx1
*/ JVkuSIR>
private void insertSort(int[] data, int start, int len) { m$^5{qpg
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y0(.6HI
} G4*&9Wo
} 0C>_aj
} utuWFAGn A
} (lS[a
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堆排序: 1fMV$T==K
%J9u?-~
package org.rut.util.algorithm.support; !-^oU"
u"V,/1++\
import org.rut.util.algorithm.SortUtil; >
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7gN;9pc$
/** pZopdEFDK|
* @author treeroot
m (MQ
* @since 2006-2-2
ar\|D\0V
* @version 1.0 d/j?.\
*/ >'W,8F
public class HeapSort implements SortUtil.Sort{ R:&y@/JY8[
ga/zt-&
/* (non-Javadoc) Zv!XNc!"$y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;`LG WT-<F
*/ ,$/Ld76U
public void sort(int[] data) { 5I1YB+$}e
MaxHeap h=new MaxHeap(); nRB3VsL
h.init(data); R*2N\2
for(int i=0;i h.remove(); JxwKTFU'3O
System.arraycopy(h.queue,1,data,0,data.length); ! J<Xel{
} 21tv(x
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private static class MaxHeap{ \V!{z;.fA
k<Gmb~Tg1
void init(int[] data){ AVw oOvJ
this.queue=new int[data.length+1]; EjFpQ|-L|
for(int i=0;i queue[++size]=data; P ?f${t+
fixUp(size); @(35I
} r>ed/<_>m;
} 9v`sSTlSd
<(@S;?ZEW
private int size=0; He'VqUw_
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private int[] queue; O2ktqAWx@
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public int get() { J-'XT_k:iM
return queue[1]; 1}Q9y`65
} &.DRAD)
7r'_p$
public void remove() { (?8i^T?WP=
SortUtil.swap(queue,1,size--); yUJ#LDW
fixDown(1);
OM1{-W
} D
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file://fixdown hvO$ f.i
private void fixDown(int k) { ]58~b%s
int j; $Z]@N
nA9N
while ((j = k << 1) <= size) { [ !#Dba#
if (j < size %26amp;%26amp; queue[j] j++; %n9ukc~$p
if (queue[k]>queue[j]) file://不用交换 "GZ}+K*GG
break; %V]v,
SortUtil.swap(queue,j,k); h M7 SGEV
k = j; 9#P~cW?
} i"iy 0?
} K/Yeh<_&
private void fixUp(int k) { ejyx[CF
while (k > 1) { 9q$^x/z!
int j = k >> 1; I*Dj@f`
if (queue[j]>queue[k]) As>Og
break; 8CRbo24"s
SortUtil.swap(queue,j,k); [zN*P$U]
k = j; us?q^>u
} DoFe:+_U3
} Z]Udx
*,CJ 3<>
} lMu9Dp
9y&;6V.'
} Xw'sh#i2
0nCiN;sA
SortUtil: 2e1%L,y{W
YYFS
({
package org.rut.util.algorithm; j0+D99{R
e#k rr
import org.rut.util.algorithm.support.BubbleSort; 1)h<)
import org.rut.util.algorithm.support.HeapSort; de2G"'F
import org.rut.util.algorithm.support.ImprovedMergeSort; fi>.X99(G
import org.rut.util.algorithm.support.ImprovedQuickSort; 7Ko*`-p
import org.rut.util.algorithm.support.InsertSort; cq?,v?m
import org.rut.util.algorithm.support.MergeSort; &l]F&-
import org.rut.util.algorithm.support.QuickSort; qF$y
p>|#
import org.rut.util.algorithm.support.SelectionSort; QOUyD;0IW
import org.rut.util.algorithm.support.ShellSort; !2HF|x$
M0lJyzJ
/** r`<e<C
* @author treeroot k6z
]-XG
* @since 2006-2-2 ;}f {o^ ]'
* @version 1.0 |-{e!&
*/ Kgi`@`
public class SortUtil { t^K Qv~
public final static int INSERT = 1; iR9duP+
public final static int BUBBLE = 2; 12'MzIsU's
public final static int SELECTION = 3; ,N,@9p
public final static int SHELL = 4; 24 [cU
public final static int QUICK = 5; u? >x
public final static int IMPROVED_QUICK = 6; cSB_b.@"1
public final static int MERGE = 7; r vq{Dfo=
public final static int IMPROVED_MERGE = 8; V6d,}Z+"z'
public final static int HEAP = 9; .!L{yU,
"O9n|B
public static void sort(int[] data) { r`sKe
&
sort(data, IMPROVED_QUICK); PR!0=E*}
}
Nb3O>&J
private static String[] name={ x?B`p"ifS
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rp<~=X
}; G7`mK}J7
J5jI/P
private static Sort[] impl=new Sort[]{ h(AL\9{=}
new InsertSort(), R"HV|Dm|m
new BubbleSort(), @8m%*pBg
new SelectionSort(), &E0^Jz
new ShellSort(), Lz_.m
new QuickSort(), .p=J_%K}0x
new ImprovedQuickSort(), LqI&1$#
new MergeSort(), N-2_kjb!
new ImprovedMergeSort(), Bf y
new HeapSort() =&k[qqxg
}; 0Cf'\2
/mp!%j~
public static String toString(int algorithm){ h {J io>
return name[algorithm-1]; &$2d=q8mh
} jPz1W4pk
>#&2 5,Q
public static void sort(int[] data, int algorithm) { N.Q}.(N0
impl[algorithm-1].sort(data); 6
F 39'
} #+_=(J
iuXXFuh
public static interface Sort { ?RsPAL
public void sort(int[] data); x\ #K2
} i9qIaG/
l44QB8
9
public static void swap(int[] data, int i, int j) { 6A=k;do
int temp = data; xH`
VX-X3
data = data[j]; gzvgXZ1q"
data[j] = temp; pN9U1!|uam
} LcA7f'GVK
}
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