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。 Bf&,ACOf
插入排序: uC_&?
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package org.rut.util.algorithm.support; JN9
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import org.rut.util.algorithm.SortUtil; pa7Iz^i
/** ) o)k~6uT
* @author treeroot
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* @since 2006-2-2 +) pO82
* @version 1.0 +/g/+B_b
*/ E1atXx
public class InsertSort implements SortUtil.Sort{ 9~6FWBt
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/* (non-Javadoc) L*A9a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1^bI9 /
*/ \]uo^@$bm
public void sort(int[] data) { $)L=MEdx
int temp; W!$aK )]4u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tMWDKatb
} !'4HUB>+
} ?m)3n0Uh
} RhJ{#G~:%
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} |@J:A!
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冒泡排序: B( ]=I@L=W
RCFocOOn
package org.rut.util.algorithm.support; gAy,uP~,
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import org.rut.util.algorithm.SortUtil; $6BD6\@
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/** Gw"H#9J}
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* @author treeroot p Rt=5WZ
* @since 2006-2-2 rKlu+/G
* @version 1.0 @`qhQ
*/ xt! DS0|*Y
public class BubbleSort implements SortUtil.Sort{ *x^W`i
w7.I0)MH
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q4gsOxP
*/ J|DID+M
public void sort(int[] data) { 29]T:I1d[
int temp; H
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for(int i=0;i for(int j=data.length-1;j>i;j--){ "=7y6bM
if(data[j] SortUtil.swap(data,j,j-1); xLfx/&2
} n'<FH<x
} vT*z3
} MuzlUW ]
} [m>kOv6>^
"Qf X&'09
} `"N56
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选择排序: ?8cgQf$
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package org.rut.util.algorithm.support; ;a]2hd"6
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import org.rut.util.algorithm.SortUtil; S>W_p~@
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/** A}(&At%n4
* @author treeroot 3`ov?T(H
* @since 2006-2-2 nLn3kMl4
* @version 1.0 b'
1%g}
*/ y{>d&M|
public class SelectionSort implements SortUtil.Sort { 5iE-$,7#L
&|;XLRHP}
/* VdrqbZ
* (non-Javadoc) OK{_WTCe>
* !d@q T.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ),#%jc2_^
*/ h J*2q"
public void sort(int[] data) { Lh0qB)>
int temp; ?0%yDq1_
for (int i = 0; i < data.length; i++) { s?=v@|vz)
int lowIndex = i; #0K122oY
for (int j = data.length - 1; j > i; j--) { oyQp"'|N
if (data[j] < data[lowIndex]) { Pr
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lowIndex = j;
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} 0PiD<*EA
} +!dWQ=W
SortUtil.swap(data,i,lowIndex); 7Y`/w$
} [LDV*79Z
} )<_e{_h
'&?OhSeN
} \'z&7;px
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Shell排序: ]L/h,bVI1
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package org.rut.util.algorithm.support; HAq
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import org.rut.util.algorithm.SortUtil; q~*9A-MH
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/** `Sh#>
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* @author treeroot Gqe?CM
* @since 2006-2-2 11%<bmJ]Q3
* @version 1.0 ?`wO
\>y
*/ X,m6#vLK2
public class ShellSort implements SortUtil.Sort{ gi26Dtk(h
X?m"86L
/* (non-Javadoc) V)[ta`9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n<
npJ*
*/ H7&>c M
public void sort(int[] data) { 2=P.$Kx
for(int i=data.length/2;i>2;i/=2){ jNKu5"HB
for(int j=0;j insertSort(data,j,i); BCH{0w^D
} }.j<kmd
} b`?$;5
insertSort(data,0,1); W{pyU\
} +;Yd<~!c Z
<g/Z(<{wor
/** .UxbwTup
* @param data YVcFCl
* @param j u\LbPk
* @param i *G'R+_tdE
*/ vuL;P"F4&
private void insertSort(int[] data, int start, int inc) { g^ @9SU
int temp; nnP]x [
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >ZAb9=/M)F
} 3em&7QM
} uc>u=kEue
} in>Os@e#
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} l*~ ".q;S
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快速排序: '@~\(SH
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package org.rut.util.algorithm.support; @|3PV
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import org.rut.util.algorithm.SortUtil; Ie12d@
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/** QqpXUyHp[
* @author treeroot :Z(w,
* @since 2006-2-2 =6PTT$,
* @version 1.0 _J|cJ %F>%
*/ {KH!PAh
public class QuickSort implements SortUtil.Sort{ KwEyMR!
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/* (non-Javadoc) 7iI6._"!w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jv8diQ.
*/ <xb =.xe
public void sort(int[] data) { Bo)N<S_=^
quickSort(data,0,data.length-1); %E1_)^^
} \FE
private void quickSort(int[] data,int i,int j){ }f/xMp-Y
int pivotIndex=(i+j)/2; FLWQY,
file://swap h-0#h/u>M
SortUtil.swap(data,pivotIndex,j); w6b\l1Z
xN^ngRg0
int k=partition(data,i-1,j,data[j]); ?^y!}(
SortUtil.swap(data,k,j); Qyh_o
if((k-i)>1) quickSort(data,i,k-1); u 2)#Ml
if((j-k)>1) quickSort(data,k+1,j); uA`EJ )d
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} 3Ryae/Nk
/** #2dd`F8
* @param data |.asg
* @param i o@o0V
* @param j V_1'` F
* @return zO@7V>2
*/ nnw5
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private int partition(int[] data, int l, int r,int pivot) { pn5A6
#
do{ TGSUbBgU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #kmZS/"
SortUtil.swap(data,l,r); N;\G=q]
9
} >~+'V.CNW
while(l SortUtil.swap(data,l,r); CLQE@kF;
return l; kNqIPvuMr
} MLd*WpiI.
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} [xm{4Ba2X
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改进后的快速排序: XGs
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package org.rut.util.algorithm.support; [,@gSb|D?
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import org.rut.util.algorithm.SortUtil; &Fw8V=Pw
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/** |._9;T-Yde
* @author treeroot ;*~y4'{z
* @since 2006-2-2 KG2ij~v
* @version 1.0 {[
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*/ ;usv/8
public class ImprovedQuickSort implements SortUtil.Sort { -Hx._I$l
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; hny(:Dj
/* (non-Javadoc) Xp_3EQl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *>=|"ff
*/ ".@}]z8
public void sort(int[] data) { nQ\)~MKd
int[] stack=new int[MAX_STACK_SIZE]; 'N7AVj
dn? #}^,"
int top=-1; dg(fD>+
int pivot; Syf0dp3
int pivotIndex,l,r; JA")L0a_
#z(JYw,
stack[++top]=0; Y{Yp N
stack[++top]=data.length-1; vX9B^W||x
z?b[ 6DLV;
while(top>0){ K #f*LV5
int j=stack[top--]; z~Ec *
int i=stack[top--]; b*AL,n?
q#=}T~4j
pivotIndex=(i+j)/2; T+$Af,~
pivot=data[pivotIndex]; J&vmW}&
A_:YpQ07@
SortUtil.swap(data,pivotIndex,j); [~%\:of70n
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file://partition ~_;x o?@ba
l=i-1; c@uNA0
p
r=j; S8 zc1!
do{ \W;+@w|c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~9tPT0^+
SortUtil.swap(data,l,r); P
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} p!XB\%sv'"
while(l SortUtil.swap(data,l,r); BLno/JK0}
SortUtil.swap(data,l,j); D09/(%4j
NHL -ll-R
if((l-i)>THRESHOLD){ 96 ozt UK
stack[++top]=i; dx<KZR$!V
stack[++top]=l-1; ME9jN{ le
} Ah|,`0dw
if((j-l)>THRESHOLD){ rX^wNH
stack[++top]=l+1; fw[Z7`\Q5
stack[++top]=j; 8M"0o}wx
} ?6m6 4{M
|q(
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} [r)Hm/_=|U
file://new InsertSort().sort(data); 0_A|K>7
insertSort(data); oD@~wcMIT0
} o1d ECLQa
/** C2Pw;iK_t
* @param data J7p'_\
*/ 0Ud.u
private void insertSort(int[] data) { 2#^@awJ ?
int temp; )`*=P}D
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ['G@`e*\
} F$!K/Mm[
} 9q4%s?)j
} 3BSJ|o<"=
QoU0>p+2
} i6.HR?n
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归并排序: o'`:$
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package org.rut.util.algorithm.support; BS6UXAf{|Z
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import org.rut.util.algorithm.SortUtil; ]P5|V4FXo
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/** t/3t69 \x
* @author treeroot 5y1:oiE/
* @since 2006-2-2 tbNIl cAWS
* @version 1.0 RTEzcJ>
*/ NJe^5>4`
public class MergeSort implements SortUtil.Sort{ }H>}v/
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/* (non-Javadoc) \?|FB~.Ry
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sXpA^pT"T
*/ 65~X!90k
public void sort(int[] data) { $v6`5;#u
int[] temp=new int[data.length]; X=W.{?
mergeSort(data,temp,0,data.length-1); #cZ<[K q6
} [5iBXOmpS=
/uyZ[=5
private void mergeSort(int[] data,int[] temp,int l,int r){ 2brxV'tk
int mid=(l+r)/2; |#)S`Ua1
if(l==r) return ; {FrcpcrQa
mergeSort(data,temp,l,mid); %]iDhXLr
mergeSort(data,temp,mid+1,r); $4&%<'l3I
for(int i=l;i<=r;i++){ c(R=f+
temp=data; k4AF
.U`I
} (PM!{u=
int i1=l; MoFAQe
int i2=mid+1; -/7[\S
for(int cur=l;cur<=r;cur++){ XITh_S4fs=
if(i1==mid+1) `E4+#_ v
data[cur]=temp[i2++]; Q)$RE{*-
else if(i2>r) 15 /lX
data[cur]=temp[i1++]; c^?+"7oO0
else if(temp[i1] data[cur]=temp[i1++]; I|SQhbi
else z|^+uL
data[cur]=temp[i2++]; 9k`}fk\M
} ;ye5HlH}.
} uE}A-\G
lo!.%PP|
} BSMM3jXb
L2L=~/LG
改进后的归并排序: OX
r%b
t.ci!#/d
package org.rut.util.algorithm.support; 4|]0%H~n6
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import org.rut.util.algorithm.SortUtil; `L=d72:
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/** 1h[xVvo<L
* @author treeroot <uYeev%
* @since 2006-2-2 kw gsf5[
* @version 1.0 0?{Y6:d+
*/ C=sEgtEI
public class ImprovedMergeSort implements SortUtil.Sort { L2j7w006
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private static final int THRESHOLD = 10; ,8Yc@P_O
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/* ?4^8C4
* (non-Javadoc)
^tFbg+.
* KbcmK(`_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]m(C}}
*/ .:nV^+)
public void sort(int[] data) { C~r(*nr
int[] temp=new int[data.length]; L2jjkyX]
mergeSort(data,temp,0,data.length-1); GlPd)m`
} xX5EhVR
#AN]mH
private void mergeSort(int[] data, int[] temp, int l, int r) { B}&9+2M
int i, j, k; v"K #
int mid = (l + r) / 2; ?}tWI7KI
if (l == r) L
(#DVF
return; A'=,q
if ((mid - l) >= THRESHOLD) xeGl}q|
mergeSort(data, temp, l, mid); (z:DTe
else YWXY4*G
insertSort(data, l, mid - l + 1); AB1.l
hR
if ((r - mid) > THRESHOLD) Wj}PtQ%lp/
mergeSort(data, temp, mid + 1, r); \uUd *
else b;K];o-/f
insertSort(data, mid + 1, r - mid); keMfK]9
yt@;yd:OEk
for (i = l; i <= mid; i++) { L#}HeOEi[
temp = data; \@KK X
} XP|qY1
for (j = 1; j <= r - mid; j++) { Cr a@
temp[r - j + 1] = data[j + mid]; \H-,^[G3
} A;'*>NS
int a = temp[l]; 'ZUB:R@[
int b = temp[r]; 5x}XiMM
for (i = l, j = r, k = l; k <= r; k++) { A$a>=U|Z8
if (a < b) { Q6e;hl
data[k] = temp[i++]; NF0=t}e
a = temp; v1m'p:7uGB
} else { w9c^IS
data[k] = temp[j--]; 97]$*&fH
b = temp[j]; qVidubsW
} n-5@<y^
} rZt7C(FM$7
} -{=c T?"+
e+? -#
/** WbP
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* @param data .R<Ke\y/
* @param l 5e|2b] f$
* @param i u[>hs
\3k
*/ ]-D&/88``
private void insertSort(int[] data, int start, int len) { 5Y W.s
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]%4rL
S
} @TWt M#
} [Dv6z t>
} CL%+`c0
} EK
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堆排序: $zR[2{bg
&AS<2hB
package org.rut.util.algorithm.support; ER)<Twj
P_Bhec|#fT
import org.rut.util.algorithm.SortUtil; [&B}{6wry
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/** &M5_G$5n
* @author treeroot 3!OO_
* @since 2006-2-2 MUeS8:q-N
* @version 1.0 -l ?J
*/ H)Kt!v8
public class HeapSort implements SortUtil.Sort{ ':[:12y[
$d +n},[C{
/* (non-Javadoc) ENEn Hu^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pEn3:.l<
*/ .0eHP
public void sort(int[] data) { cfg_xrW0^
MaxHeap h=new MaxHeap(); w{HDCPuS
h.init(data); ~nSGN%
for(int i=0;i h.remove(); !6 k{]v
System.arraycopy(h.queue,1,data,0,data.length); uINm>$G,5
} } XJZw|n
x|6#
/m
private static class MaxHeap{ MUs~ZF
jcuC2t
void init(int[] data){ }_A#O|dxO
this.queue=new int[data.length+1]; :q+D`s
for(int i=0;i queue[++size]=data; jl:dKL@
fixUp(size); _]Ei,Ua
} J6s55
v
} potb6jc?
u40k9vh
private int size=0; 'g$a.75/-
x9Qa.Jmj
private int[] queue; #3L=\j[
y
}"{NW!RfP
public int get() { HVz,liq
return queue[1]; ~Xf&<&5d T
} >UQ`@GdafR
@rh1W$
public void remove() { %~ ROV>&
SortUtil.swap(queue,1,size--); ST^@7f_
fixDown(1); %NI'PXpI
} N;.cZp2
file://fixdown NUclF|G
private void fixDown(int k) { Ju~8C\Dd
int j; BwN>;g_
while ((j = k << 1) <= size) { gkN|3^
if (j < size %26amp;%26amp; queue[j] j++; ];|;") #=
if (queue[k]>queue[j]) file://不用交换 BU|bo")
break; `T;M=S^y*E
SortUtil.swap(queue,j,k); ?D^l&`S
k = j; }g? 9/)z
} w Jb\Q
} 05+uBwH
private void fixUp(int k) { 0k];%HV|
while (k > 1) { W9$mgs=S`E
int j = k >> 1; wkp|V{k
if (queue[j]>queue[k])
hgz7dF
break; :h|nV
~
SortUtil.swap(queue,j,k); ,B,2t u2
k = j; tvC7LL NP<
} @Lj28&4:<
} (S@H'G"
+bj[.
} `_+j+
lIN`1vX(
} #Moju
fy|Ae
SortUtil: mST/u>'
fYU-pdWPT
package org.rut.util.algorithm; #\&jM
-.-
KL4Z||n
import org.rut.util.algorithm.support.BubbleSort; E+ 65
import org.rut.util.algorithm.support.HeapSort; JQ*CF(9
import org.rut.util.algorithm.support.ImprovedMergeSort; fRTQ5V
import org.rut.util.algorithm.support.ImprovedQuickSort; 6^L4wd7)
import org.rut.util.algorithm.support.InsertSort; TV>UD
q
import org.rut.util.algorithm.support.MergeSort; 8^H <dR
import org.rut.util.algorithm.support.QuickSort; *(~=L%s
import org.rut.util.algorithm.support.SelectionSort; uQ;b'6Jcp
import org.rut.util.algorithm.support.ShellSort; qYMTud[Vf
A3 UC=z<y
/**
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* @author treeroot JvHGu&Nr!
* @since 2006-2-2 Ef;OrE""
* @version 1.0 @Y#{[@Hp%
*/ ypuW}H%`
public class SortUtil { NA,)FmQjk
public final static int INSERT = 1; kCRP?sj
public final static int BUBBLE = 2; | Wrf|%p
public final static int SELECTION = 3; !/w<F{cl
public final static int SHELL = 4; Xegg2.Kk
public final static int QUICK = 5; ;UU+:~
public final static int IMPROVED_QUICK = 6; ak?XE4-N
public final static int MERGE = 7; /lQGFLZL
public final static int IMPROVED_MERGE = 8; ~PT(/L
public final static int HEAP = 9; crJyk #_
OG_2k3v
public static void sort(int[] data) { CapWn~*g
sort(data, IMPROVED_QUICK); W*hRYgaX3
} c%uX+\-$
private static String[] name={ `]^JOw5o
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N'fE^jqU
}; Os?`!1-
3N) bJ
private static Sort[] impl=new Sort[]{ 3B(6^iS
new InsertSort(), \advFKN
new BubbleSort(), +fd^$Qd%K
new SelectionSort(), pZ/aZg1Ld
new ShellSort(), S-"OfWg<
new QuickSort(), +_8*;k@F'
new ImprovedQuickSort(), bP`.teO\
new MergeSort(), <Gy)|qpK[
new ImprovedMergeSort(), 0R,?$qM\
new HeapSort() yIwAJl7Xf
}; 3|Q:tt'|#
"8Ud&o
public static String toString(int algorithm){ Cwxy~.mI
return name[algorithm-1]; F z_SID
} nlsQf3
'3f"#fF6
public static void sort(int[] data, int algorithm) { ]@W.5!5H
impl[algorithm-1].sort(data); ,X&lVv#
} ?qviJDD|f
`e
t0i.
public static interface Sort { t)n!];
public void sort(int[] data); VRYj&s'@
} .17WF\1HC.
-{i;!XE$SR
public static void swap(int[] data, int i, int j) { 5-Vdq
int temp = data; ocCC63J
data = data[j]; KZ/U2.{O<
data[j] = temp; vdloh ,
} [q/=%8qLUA
} (gQ^jmZPG