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。 Z+!3m.q
插入排序: 0B(<I?a/
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package org.rut.util.algorithm.support; NIeKS_ +
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import org.rut.util.algorithm.SortUtil; |>(@n{
/** $9znRTFEj
* @author treeroot )!1; =
* @since 2006-2-2 J@ x%TA
* @version 1.0 _C9*M6IU
*/ KlgPDV9mg
public class InsertSort implements SortUtil.Sort{ $or?7 w>
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/* (non-Javadoc) )hH9VGZq(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GyV3 ]Qqj
*/ !F0MLvdX7^
public void sort(int[] data) { wj>mk
int temp; aa<9%j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~Mv@Bl
} 6KiI3%y?0
} Xtqjx@ye
} T ,,
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} Bcx-t)[
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冒泡排序: SWr?>dl
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package org.rut.util.algorithm.support; _8C0z=hz
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import org.rut.util.algorithm.SortUtil; ZF
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/** N9r}nqCN
* @author treeroot :+ef|,:`/
* @since 2006-2-2 C+-GE9=
* @version 1.0 qu[ ~#
*/ aH)$#6${Ap
public class BubbleSort implements SortUtil.Sort{ D%v4B`4ua'
@psyO]D=j%
/* (non-Javadoc) *Dld?Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hkw;W[ZWa
*/ 8P r H"pI
public void sort(int[] data) { E
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int temp; (#* 7LdZ
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4 vwa/?
if(data[j] SortUtil.swap(data,j,j-1); |p J)w
} P0J3ci}^
} n(.y_NEgV!
} c[]_gUp8
} \P]w^
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} _aVrQ@9
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选择排序: Zrp`91&I
7QP%Pny%
package org.rut.util.algorithm.support; M}NmA
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import org.rut.util.algorithm.SortUtil; v4!zB9d
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/** knX0b$$
* @author treeroot trmCIk&Fkj
* @since 2006-2-2 \o9-[V#Gm
* @version 1.0 ~H/|J^ J
*/ Z^,C><Yt
public class SelectionSort implements SortUtil.Sort { `m?%{ \
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/* zu&5[XL
* (non-Javadoc) v!?bEM3D
* ?ix--?jl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qd"1KzQWO
*/ LziEF-_
public void sort(int[] data) { g1VdP[Y#
int temp; LY2oBX@fC
for (int i = 0; i < data.length; i++) { |;_NCy8i3X
int lowIndex = i; %se4aeOrX
for (int j = data.length - 1; j > i; j--) { 1VK?Svnd
if (data[j] < data[lowIndex]) { <qN0Q7
lowIndex = j; T!5m'Q.
} 8
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} sfi.zuG
SortUtil.swap(data,i,lowIndex); <m9hM?^q
} xy$73K6
} b'Qia'a%
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} q%TWtQS
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Shell排序: qLBXyQ;U
Y~Y-L<`I
package org.rut.util.algorithm.support; F<q'ivj:w
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import org.rut.util.algorithm.SortUtil; zF6R\w
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/** ;hGC.}X
* @author treeroot R;&C6S
* @since 2006-2-2 By {zX,6'
* @version 1.0 Vrn. #d
*/ qPZ'n=+
public class ShellSort implements SortUtil.Sort{ v.:aICB5
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/* (non-Javadoc) bqp6cg\p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XJy~uks,
*/ CI"7* z_
public void sort(int[] data) { "OF4#a17
for(int i=data.length/2;i>2;i/=2){ !spp*Q)#\
for(int j=0;j insertSort(data,j,i); Ig75bZz
} occ^bq
} T%~w~stW
insertSort(data,0,1); 01N"
} \Zz"%i
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/** exw~SvT3
* @param data ,gGIkl&
* @param j t-Rfy`I3
* @param i D7|[:``
*/ MTo<COp($
private void insertSort(int[] data, int start, int inc) { nmZz`P9g
int temp; <<`*o[^L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :;W[@DeO[
} B.CUk.
} xF:
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} &<6E*qM
*,<A[XP
} vdw5T&Q{{C
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快速排序: tJ[yx_mf
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package org.rut.util.algorithm.support; KBJw7rra
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import org.rut.util.algorithm.SortUtil; DhZuQpH
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/** ,Oa-AF/p
* @author treeroot Ix@rn
* @since 2006-2-2 /5Aum?~
* @version 1.0 eygmh aE
*/ nVkx Q?2
public class QuickSort implements SortUtil.Sort{ jGpSECs
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/* (non-Javadoc) |f), dC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |U{9Yy6p
*/ F: %-x=q
public void sort(int[] data) { ly"Jl8/<
quickSort(data,0,data.length-1); pgbm2mT9
} 4?Pdld
private void quickSort(int[] data,int i,int j){ FJ0Ity4u6
int pivotIndex=(i+j)/2; gU\pP,a
file://swap gY\X?
SortUtil.swap(data,pivotIndex,j); -&4>>h9_
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int k=partition(data,i-1,j,data[j]); 68Po`_/s
SortUtil.swap(data,k,j); O b'B?
if((k-i)>1) quickSort(data,i,k-1); JPQWRK^
if((j-k)>1) quickSort(data,k+1,j); |,3s]b`
n^aSio6
} U-Ia$b-5!
/** VP0q?lh
* @param data Q#"p6ZmI
* @param i wZ6D\I
* @param j rk$&sDc/3
* @return 9A_{*E(wd
*/ xxjg)rVuy
private int partition(int[] data, int l, int r,int pivot) { xC N6?
do{ Xi$( U8J_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _M'WTe
SortUtil.swap(data,l,r); I\e?v`e
} Mo?eVtZ
while(l SortUtil.swap(data,l,r); s~e<Pr?yu
return l; 4=/5
} hRAI7xk
7P1G^)
} xz2U?)m;x
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改进后的快速排序: PdiP5S }/
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package org.rut.util.algorithm.support; =k.:XblEe[
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import org.rut.util.algorithm.SortUtil; sF9{(Us
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/** <0lXJqd
* @author treeroot aAM!;3j]B`
* @since 2006-2-2 0XouHU
* @version 1.0 ?88k`T'EI
*/ X3[gi`
public class ImprovedQuickSort implements SortUtil.Sort { W\]bh'(
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private static int MAX_STACK_SIZE=4096; 1 &G0;
private static int THRESHOLD=10; |OW/-&)
/* (non-Javadoc) }/tT=G]91
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7$3R}=Z`\q
*/ S1jI8 #z}_
public void sort(int[] data) { m(0sG(A~
int[] stack=new int[MAX_STACK_SIZE]; 4I7B
#{
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int top=-1; [5[}2B_t
int pivot; F`!B!uY
int pivotIndex,l,r; J|*Z*m
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stack[++top]=0; y?=W
stack[++top]=data.length-1; %
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while(top>0){ E/bIq}R6
int j=stack[top--]; K:!){a[
int i=stack[top--]; Xge]3Ub
=BD} +(3
pivotIndex=(i+j)/2; 0$=Uhi
pivot=data[pivotIndex]; ?O(@BT
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SortUtil.swap(data,pivotIndex,j); ]5(T{
_#[~?g`
file://partition SCwAAE9s]
l=i-1; pe^hOzVv
r=j; (EW<Ggi
do{ 5>9KW7^L
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i4<&zj})
SortUtil.swap(data,l,r); -,xCUG<g
} :Y? L*
while(l SortUtil.swap(data,l,r); ;8F|Q<`pV
SortUtil.swap(data,l,j); /zt9;^e
\9;SOA v
if((l-i)>THRESHOLD){ (<M^C>pldf
stack[++top]=i; ?yAp&Ad
stack[++top]=l-1; +65OR'd
} )1CYs4lp
if((j-l)>THRESHOLD){ ~kDR9s7
stack[++top]=l+1; '8%pEl^
stack[++top]=j; +Dvdv<+
} 2Y~UeJ_\Lq
TtZZjeg+V
} TcB^Sctf
file://new InsertSort().sort(data); -Iq
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insertSort(data); ~bm
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} _(J;!,
/** T,'{0q
* @param data ZtzSG@f
*/ QuF76&)7
private void insertSort(int[] data) { Xk2M.:3`
int temp; {?2jvv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N=2BrKb)o
} rw CFt6;v
} rbC4/ 9G\
} !T+jb\O_
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} 0 QzUcr)3+
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归并排序: iJ8 5okv'
8PN/*Sa
package org.rut.util.algorithm.support; 0P MF)';R
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import org.rut.util.algorithm.SortUtil; :ik$@5wp
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/** yQP!Vt^
* @author treeroot aJ!(c}N~97
* @since 2006-2-2 +jpaBr-O#
* @version 1.0 $x5,Oe n
*/ b*;zdGX.A9
public class MergeSort implements SortUtil.Sort{ N3M:|D
N+)gYb6h
/* (non-Javadoc) ;N+
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {J aulg
*/ /5x~3~
public void sort(int[] data) { } kNbqwVP
int[] temp=new int[data.length]; ]mfI$p%
mergeSort(data,temp,0,data.length-1); <V> [H7
} rwZI;t$hf
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3Jt7IM!9[
int mid=(l+r)/2; B~%'YQk
if(l==r) return ; O?p8Gjf
mergeSort(data,temp,l,mid); [H~Yg2O
mergeSort(data,temp,mid+1,r); gKp5*
for(int i=l;i<=r;i++){ >rbHpLm1`
temp=data; Lg;b17
} [>P9_zID
int i1=l; KC"#
int i2=mid+1; %1Ex{H hb
for(int cur=l;cur<=r;cur++){ 7m4gGkX#r
if(i1==mid+1) 4yZ'+\ +I
data[cur]=temp[i2++]; E?VPCx
else if(i2>r) 0r4,27w
data[cur]=temp[i1++]; R04%;p:k#
else if(temp[i1] data[cur]=temp[i1++]; k!&G; 6O-
else |igr3p5Fw
data[cur]=temp[i2++]; Z$UPLg3=;_
} bCV3h3<
} TO(2n8'fdO
ZsgJ6
Y
} ( M > C
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改进后的归并排序: %i!=.7o.
?&ow:OH+
package org.rut.util.algorithm.support; G,{=sFX
OpNTyKbaD
import org.rut.util.algorithm.SortUtil; z;c~(o@4
7o+JQ&fF;
/** ;~A-32;Y4
* @author treeroot xJ-(]cO'
* @since 2006-2-2 0
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* @version 1.0 S!LLC{
*/ U{ZE|b.?b
public class ImprovedMergeSort implements SortUtil.Sort { r8R]0\
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private static final int THRESHOLD = 10; #NoY}*
$0kuR!U.N
/* qdM=}lbc
* (non-Javadoc) 5s5GBJ?
* 5l(8{,NDt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AQUl:0!
*/ "8.to=Lx
public void sort(int[] data) { wgN)*dpuI
int[] temp=new int[data.length]; P#8+GN+bF
mergeSort(data,temp,0,data.length-1); BzVF!<!
} 4R c_C0O
n+sV$*wvS
private void mergeSort(int[] data, int[] temp, int l, int r) { wqB 5KxO
int i, j, k; 3Y;<Q>roT
int mid = (l + r) / 2; 8\AyKw
if (l == r) i)@IV]]6yL
return; jX9{Ki"
if ((mid - l) >= THRESHOLD) g9T9TQ-O
mergeSort(data, temp, l, mid); C >@T+xOZ
else ak SUk)}e
insertSort(data, l, mid - l + 1); m'!smSx8
if ((r - mid) > THRESHOLD) *mvDh9v
mergeSort(data, temp, mid + 1, r); ;0Vyim)S]
else rXIFCt8J
insertSort(data, mid + 1, r - mid); k=nN#SMn
*y}<7R
for (i = l; i <= mid; i++) { $]
gwaJ:
temp = data; p)x*uqSd
} @4O;dFOQ)
for (j = 1; j <= r - mid; j++) { ZaNZUVBh
temp[r - j + 1] = data[j + mid]; kVqRl%/3Tb
} ~x(1g;!^
int a = temp[l]; p aQ"[w
int b = temp[r]; b}f#[* Z
for (i = l, j = r, k = l; k <= r; k++) { #`g..3ey
if (a < b) { E$4_.Z8sRw
data[k] = temp[i++]; |vGb,&3
a = temp; (Yv )%2
} else { "X[sW%# F
data[k] = temp[j--]; /Ezx'h3Q
b = temp[j]; 2\b 2W_
} x;F^7c1
} B#A
.-nb
} #"T< mM7
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/** ORc20NFy7
* @param data Tc3~~ X
* @param l nEG+TRZ)\
* @param i 0\y{/P?I$
*/ fQ[&
^S$
private void insertSort(int[] data, int start, int len) { [|vE*&:uO
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y^ij u(
} LH@xr\^
} Z$X[x7e.
} 'Nqa=_<WW
} E7CeE6U
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堆排序: (V06cb*42[
7\T~KYb?
package org.rut.util.algorithm.support; #A:+|{H"
}C'H@:/
import org.rut.util.algorithm.SortUtil; 5n1aRA1
Qf'%".*=~8
/** sOf;I]E|
* @author treeroot 1DTA Dh0
* @since 2006-2-2 t_+Xt$Q7C
* @version 1.0 w,s++bV;L
*/ +L]$M)*0&
public class HeapSort implements SortUtil.Sort{ TV['"'D&i
cu@i;Hb@
/* (non-Javadoc) 4/Mi-ls_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fOHgz,x=
*/ 2omKP,9,2
public void sort(int[] data) { AB:JXMyK
MaxHeap h=new MaxHeap(); MS=zG53y
h.init(data); iC.k8r+~
for(int i=0;i h.remove(); MjNq8'$"
System.arraycopy(h.queue,1,data,0,data.length); d%EUr9~?
} {,9^k'9
zK_+UT
private static class MaxHeap{ 82>90e(CH]
iPuX
void init(int[] data){ ]zt77'J
this.queue=new int[data.length+1]; K<g<xW* X
for(int i=0;i queue[++size]=data; Ofm?`SE*|
fixUp(size); IQm[,Fh
} Twi7g3}/jB
} r](%9Y
7<Yf
private int size=0; L3@upb
%77X/%.Y
private int[] queue; z2
m(<zb
l_MF9.z&
public int get() { Jfe<$-$$7
return queue[1]; Ed>Dhy6\r
} Nr(t5TP^
!#[=,'Y
public void remove() { `a+"[%
SortUtil.swap(queue,1,size--); yPmo@aw]1
fixDown(1); - Mubq
} 5j{jbo=!
file://fixdown }}Kjb
private void fixDown(int k) { P\nz;}nv
int j; h;lg^zlTb
while ((j = k << 1) <= size) { "{@Q..hxC
if (j < size %26amp;%26amp; queue[j] j++; )
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if (queue[k]>queue[j]) file://不用交换 5L!cS+QNU
break; nl\l7/}6
SortUtil.swap(queue,j,k); je[1>\3W
k = j; e*Gt%'
} GI
;
} xis],.N
private void fixUp(int k) { AY
B~{
while (k > 1) { iL6Yk @
int j = k >> 1; ,P.yl~'Al
if (queue[j]>queue[k]) $-Yq?:
break; q-lejVS(g
SortUtil.swap(queue,j,k); ?r}'0dW
k = j; YR? ujN
} bZKlQ<sI
} 6]D%|R,Q#}
h@H8oZ[
} iu$:_W_
|ler\"Eu
} !Y95e'f.x
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SortUtil: e%wzcn
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package org.rut.util.algorithm; ~ 7^#.
xaw)iC[gI{
import org.rut.util.algorithm.support.BubbleSort; ! !we4tWq
import org.rut.util.algorithm.support.HeapSort; -H+<81"B#
import org.rut.util.algorithm.support.ImprovedMergeSort; dW4FMm>|
import org.rut.util.algorithm.support.ImprovedQuickSort; p "Cxe
import org.rut.util.algorithm.support.InsertSort; R?E< }\!
import org.rut.util.algorithm.support.MergeSort; 0LW|5BVbIO
import org.rut.util.algorithm.support.QuickSort; }QzF.![~z
import org.rut.util.algorithm.support.SelectionSort; Q/2(qD; u
import org.rut.util.algorithm.support.ShellSort; 5nA
*'($j
"pa2,-&
/** \}p!S$`
* @author treeroot oWP3Y.
* @since 2006-2-2 ~B704i
* @version 1.0 j YVR"D;
*/ JsA.jqkB
public class SortUtil { cmu| d
public final static int INSERT = 1; p\).zuEf.
public final static int BUBBLE = 2; qH9bo-6
public final static int SELECTION = 3; E8LZ%
N#
public final static int SHELL = 4; 6dlV:f_\y
public final static int QUICK = 5; Kwmtt
public final static int IMPROVED_QUICK = 6; F39H@%R
public final static int MERGE = 7; 921m'WE
public final static int IMPROVED_MERGE = 8; M}Obvl
public final static int HEAP = 9; )&F]j
KM:k<pvi
public static void sort(int[] data) { AS-%I+ A
sort(data, IMPROVED_QUICK); 62D UF
} j-%@A`j;
private static String[] name={ RO!em~{D*
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S@^o=B]]
}; Wq"5-U;:w
YA:!ULzR*
private static Sort[] impl=new Sort[]{ OC5\3H
new InsertSort(), nb|KIW
new BubbleSort(), ,CED%
new SelectionSort(), p2I9t|
new ShellSort(), l RM7s(^l
new QuickSort(), Iss)7I
new ImprovedQuickSort(), ON-zhT?v
new MergeSort(), 41XS/# M$*
new ImprovedMergeSort(), :oeDksld
new HeapSort() ~C31=\$
}; |1/UC"f
;%`oS.69
public static String toString(int algorithm){ qdQQt5Y'm
return name[algorithm-1]; TO5#iiM)
} (`cXS5R
PO@b9O
public static void sort(int[] data, int algorithm) { J`d_=C?J
impl[algorithm-1].sort(data); *I<L1g%9d
} BTAt9Z8qK
3vC"Q!J&
public static interface Sort { 4 >`2vb
public void sort(int[] data); /73ANQ"
} {4^NZTjd@
, #nYH D
public static void swap(int[] data, int i, int j) { F~Sw-b kSf
int temp = data; #KgDOCQH
data = data[j]; EpUBO}q]
data[j] = temp; $)v`roDD.
} 'i;/?'!W6
} ggL^*MV