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。 rC}r99Pe:x
插入排序: Gr&5 mniu
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package org.rut.util.algorithm.support; #rqLuqw
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import org.rut.util.algorithm.SortUtil; G/\t<>O8o
/** Uaog_@2n,
* @author treeroot `gfh]7T
* @since 2006-2-2 I/rq@27o
* @version 1.0 {LVii}<
*/ DY'D]*'7$
public class InsertSort implements SortUtil.Sort{ WE 'afxgV
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/* (non-Javadoc) L;H(I@p(e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q3u
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*/ p]:5S_$
public void sort(int[] data) { L0Bcx|)"$`
int temp; Ey A}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4*d$o=wa
} bEyZRG
} ^C^FxIA&
} ,1EyT>
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} s"?Z jV)`
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冒泡排序: C:xgM'~+
thIuK V{CO
package org.rut.util.algorithm.support; o(Yfnnuy
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import org.rut.util.algorithm.SortUtil; ~cQ./G4
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/** O{SP4|0JV
* @author treeroot FY+0r67]
* @since 2006-2-2 AX,V*
s
* @version 1.0 =7wI/5iN
*/ $!%/Kk4M
public class BubbleSort implements SortUtil.Sort{ yaza
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/* (non-Javadoc) uOUgU$%zqH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uP2e/a
*/ GcaLP*%>B
public void sort(int[] data) { #N9^C@
int temp; 88x_}M^Fnl
for(int i=0;i for(int j=data.length-1;j>i;j--){ _b|mSo,{Y
if(data[j] SortUtil.swap(data,j,j-1); Evu`e=LaG
} Cl#PYB{1Y
} Lgp{ hK
} no_;^Ou?
} 15dhr]8E
4Bg"b/kF
} `u6CuH5
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选择排序: /iURP-rl
._'AJhU$0
package org.rut.util.algorithm.support; nMm4fns
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import org.rut.util.algorithm.SortUtil; 9/2VU<
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/** <8;SSdoKi
* @author treeroot ?1Os%9D*
* @since 2006-2-2 v2eLH:6
* @version 1.0 3{c6)vR2
*/ @cYb37)q=
public class SelectionSort implements SortUtil.Sort { I<E~=
p GZiADT
/* 7p1f*N[X
* (non-Javadoc) x -;tV=E}
* U<<@(d%T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |ppG*ee
*/ RW"QUT
public void sort(int[] data) { l9{}nz
int temp; phCItN;
for (int i = 0; i < data.length; i++) { ,bTpD!
int lowIndex = i; <|-da&7
for (int j = data.length - 1; j > i; j--) { 6_mkt|E=
if (data[j] < data[lowIndex]) { T'6MAxEZUq
lowIndex = j; jD}G9=[$1
} ;f?suawMv
} deLLqdZa
SortUtil.swap(data,i,lowIndex); *jQ?(Tf
} XXDLbT'J
} i}Q"'?
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} S:(YZ%#
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Shell排序: VW`SqUl
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package org.rut.util.algorithm.support; `!( IQ&
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import org.rut.util.algorithm.SortUtil; X
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/** -I?8\
* @author treeroot <N{wFvF
* @since 2006-2-2 MxgJ+
* @version 1.0 ;rRV=$y
*/ @}\i`H1s
public class ShellSort implements SortUtil.Sort{ zJ6""38Pr
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/* (non-Javadoc) $GR
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m'zve%G
*/ 5) q_Aro
public void sort(int[] data) { PrHoN2y5E
for(int i=data.length/2;i>2;i/=2){ N7u|<
0[
for(int j=0;j insertSort(data,j,i); boq=@Qh
} D7r&z?
} b>2{F6F
insertSort(data,0,1); jp;]dyU
} Zg%tN#6y
GT7&>}FJ)
/** ck< `kJ`b
* @param data P;`Awp?
* @param j < 1%}8t"
* @param i 7gcR/HNeF
*/ 5sANF9o!
private void insertSort(int[] data, int start, int inc) { G^sx/H76J
int temp; )@ofczl6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !w}b}+]GB
} 78\j
} y/E:6w
} 5 JlgnxRq
d>?C?F
} %AN,cE*
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快速排序: ^Ze(WE)
xL*J9&~iG
package org.rut.util.algorithm.support; I 12Zh7Cc:
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import org.rut.util.algorithm.SortUtil; twu,yC!
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/** }SC&6B?G
* @author treeroot 0hhxTOp
* @since 2006-2-2 Xt:$H6
y
* @version 1.0 gxhdxSm=2
*/ R[14scV
public class QuickSort implements SortUtil.Sort{ ]ag{sU@#
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/* (non-Javadoc) 8Ji`wnkXe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zrqI^i"c
*/ &l0K~7)b
public void sort(int[] data) { oN[}i6^,e
quickSort(data,0,data.length-1); /{: XYeX
} M(nzJ
private void quickSort(int[] data,int i,int j){ eAo+w*D(
int pivotIndex=(i+j)/2; hsQDRx%H}
file://swap ;:_AOb31N
SortUtil.swap(data,pivotIndex,j); <{k`K[)
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int k=partition(data,i-1,j,data[j]); xVw@pR;
SortUtil.swap(data,k,j); P
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if((k-i)>1) quickSort(data,i,k-1); :Fm*WqZu
if((j-k)>1) quickSort(data,k+1,j); ;py9,Wno
U#cGd\b
} aXQS0>G%(
/** ZM})l9_o"
* @param data ^utOVi
* @param i r-wCAk}m*?
* @param j y%ij)vQY
* @return F \ls]luN
*/ NuPlrCy;
private int partition(int[] data, int l, int r,int pivot) { EYn?YiVFU
do{ vRH^en
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Cyd/HTNh<
SortUtil.swap(data,l,r); %SOXw8-
} :Rb\Ca
while(l SortUtil.swap(data,l,r); |,p"<a!+{w
return l; ]y6{um8"
} +HBizJ9K
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} :Bmn<2[Y;
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改进后的快速排序: #?Kw
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package org.rut.util.algorithm.support; nf^?X`g
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import org.rut.util.algorithm.SortUtil; z'm}p
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/** 4WvW11q8U
* @author treeroot jcJ 4?
* @since 2006-2-2 8j;Un]
* @version 1.0 @KK6Jy OTQ
*/
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public class ImprovedQuickSort implements SortUtil.Sort { .p!
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private static int MAX_STACK_SIZE=4096; 0TmEa59P
private static int THRESHOLD=10; 86OrJdD8
/* (non-Javadoc) It[51NMal
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /IWAU)A0
*/ i"}z9Ae~.
public void sort(int[] data) { s{@R|5
int[] stack=new int[MAX_STACK_SIZE]; ot<d
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int top=-1; UE'=9{o`
int pivot; 7A\`
int pivotIndex,l,r; zuLW'a6F-
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stack[++top]=0; j**[[
stack[++top]=data.length-1; QT,T5Q%JP:
S/XU4i:aV
while(top>0){ ri{*\LV*@
int j=stack[top--]; ^[7Mp
int i=stack[top--]; RqTO3Kf
{!|4JquE_
pivotIndex=(i+j)/2; eLSzGbKf
pivot=data[pivotIndex]; "@&TC"YG0
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7q`
SortUtil.swap(data,pivotIndex,j); Z6zV 9hn
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file://partition ,GH`tK_
l=i-1; L(TM&
ps\-
r=j; 0(7 IsG=t
do{ z?\it(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F"]P|
SortUtil.swap(data,l,r); *DPX4P
} j9NF|
while(l SortUtil.swap(data,l,r); !kE5]<H\
SortUtil.swap(data,l,j); ~</FF'Xz
]j3> =Jb;
if((l-i)>THRESHOLD){ ^!1!l-
stack[++top]=i; ]W5*R07
stack[++top]=l-1; uxf,95<g)
} dTg`z,^F
if((j-l)>THRESHOLD){ )aIcA
stack[++top]=l+1; &!8 WRJ
stack[++top]=j; 5%Qxx\q
} LlX)xJ
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} \(Sly&gL
file://new InsertSort().sort(data); 7_\sx7h{3
insertSort(data); NpH8=H9
} <<>+z5D+
/** &42]#B"*
* @param data cZh0\DyU
*/ aS [[
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private void insertSort(int[] data) { FHOw ]"#
int temp; stRM*.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rwq
} Z Ts*Y,
} juHL$SGC
} $@z77td3
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} Sb`[+i'`
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归并排序: R:~aX,qR
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package org.rut.util.algorithm.support; CQWXLQED>
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import org.rut.util.algorithm.SortUtil; 9mi@PW}1
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/** mo| D
* @author treeroot ,t`V^(PEq
* @since 2006-2-2 l?m"o-Gp3
* @version 1.0 $nE{%?n-#
*/ 1bV
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public class MergeSort implements SortUtil.Sort{ ,XT,t[w
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/* (non-Javadoc) doanTF4Da
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <X8Urum
*/ AIHH@z
public void sort(int[] data) { WESD^FK
int[] temp=new int[data.length]; ^OV; P[
mergeSort(data,temp,0,data.length-1); #z(:n5$F
} eHgr"f*7
hY4# 4A`I
private void mergeSort(int[] data,int[] temp,int l,int r){ kZ%
AGc
int mid=(l+r)/2; TQn!MUj/^
if(l==r) return ; !`{?qQ[=
mergeSort(data,temp,l,mid); Wg}KQ6
6
mergeSort(data,temp,mid+1,r); 7\UHADr
for(int i=l;i<=r;i++){ 0C<\m\|~k
temp=data; v^&HZk=(
} 'Dfs&sm
int i1=l; FF8jW1
int i2=mid+1; ,buX|
for(int cur=l;cur<=r;cur++){ N]W*ei
if(i1==mid+1) =Z+^n
?"
data[cur]=temp[i2++]; B!&5*f}*
else if(i2>r) .BPd06y
data[cur]=temp[i1++]; 08ZvRy(Je<
else if(temp[i1] data[cur]=temp[i1++]; gclj:7U
else t=7Gfv
data[cur]=temp[i2++]; 6m&GN4Ca
} )>ff"| X
} 0/QDfA?
0N1t.3U
} 7@{%S~TN
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改进后的归并排序: U4d7-&U
*9n[#2sM<
package org.rut.util.algorithm.support; %E%=Za
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import org.rut.util.algorithm.SortUtil; Ny"9!3V
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/** 0eO!,/
* @author treeroot rRevyTs
* @since 2006-2-2 />xEpR3_A
* @version 1.0 S\Z*7j3;M
*/ gxhp7c182
public class ImprovedMergeSort implements SortUtil.Sort { i7dDklj4
~;(\a@ _
private static final int THRESHOLD = 10; `6rLd>=R
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/* Y's=31G@
* (non-Javadoc) 1'~+.92Y
* 3JD62wtx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *l d)nH{
*/ ta&z lZt
public void sort(int[] data) { b#7nt ?`7p
int[] temp=new int[data.length]; 1<9d[N*
mergeSort(data,temp,0,data.length-1); 7UBW3{d/u5
} zDYJe_m ~
QY+{ OCB
private void mergeSort(int[] data, int[] temp, int l, int r) { >0kL9_9{
int i, j, k; ${Lrj}93
int mid = (l + r) / 2; e[k\VYj[
if (l == r) @{V`g8P>
return; ~H''RzN
if ((mid - l) >= THRESHOLD) 8k{XUn
mergeSort(data, temp, l, mid); .dzw5R&
else 1mgw0QO
insertSort(data, l, mid - l + 1); f$ /C.E
if ((r - mid) > THRESHOLD) v2|zIZ
mergeSort(data, temp, mid + 1, r); UHY)+6qt]
else hpOY&7QUTD
insertSort(data, mid + 1, r - mid); GF9iK|i/
J{Ij
for (i = l; i <= mid; i++) { rDaiAx&
temp = data; "QfF]/:
} d;%~\+)x4
for (j = 1; j <= r - mid; j++) { *mWS+xcU(L
temp[r - j + 1] = data[j + mid]; fk^DkV^<
} -XECYwTh
int a = temp[l]; a&)$s;
int b = temp[r]; E#w2'(t
for (i = l, j = r, k = l; k <= r; k++) { aS3-A4
if (a < b) { L #vk77
data[k] = temp[i++]; Pw|/PfG
a = temp; TFc/`
} else { Rv*x'w
==
data[k] = temp[j--]; @)ozgs@e
b = temp[j]; i+-Y"vRi
} k:s86q
} :)_P7k`>e/
} 0} \;R5a<
Iq;a!Lya-
/** Y$q--JA
* @param data {flxZ}
* @param l aj+I+r"~
* @param i +/*A}!#v
*/ 5tbi};
private void insertSort(int[] data, int start, int len) { h7\EN
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6l?KX
} Izfj
9h ?
} 5PHAd4=bJ
} x JzO?a'
} h1_KZ[X
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堆排序: `4]-B@
7_
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package org.rut.util.algorithm.support; [VB\T|$
nG5:H.)
import org.rut.util.algorithm.SortUtil; ! F&{I
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/** -/qu."9(B
* @author treeroot |w^nCsv
* @since 2006-2-2 r#.\5aQt
* @version 1.0
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*/ h "r)z6Q/
public class HeapSort implements SortUtil.Sort{ EEp,Z`
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p
/* (non-Javadoc) XAr YmO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W[W}:@KZ
*/ 4[]4KKO3Q2
public void sort(int[] data) { C@
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MaxHeap h=new MaxHeap(); ;i&'va$
h.init(data); F0 FF:><
for(int i=0;i h.remove(); uod&'g{N
System.arraycopy(h.queue,1,data,0,data.length); j1,ir
} D7x"P-ie
G_x<2E"d
private static class MaxHeap{ !n/"39KT
9a9{OJa6M
void init(int[] data){ ) crhF9 !4
this.queue=new int[data.length+1]; &P{[22dQ
for(int i=0;i queue[++size]=data; :AB$d~${M>
fixUp(size); `=3:*.T*
} #}!Ge
} ;HeUD5Nt6F
VS \~t
private int size=0; t|aBe7t7
_6 |lw&o07
private int[] queue; 3 tp'}v
"V;M,/Q|
public int get() { 9q-9UC!g
return queue[1]; 5}4r'P$m:
} %9A6c(L
hIPU%
public void remove() { auTApYS53
SortUtil.swap(queue,1,size--); n_51-^*z
fixDown(1); Hb;#aXHSd
} 0ZXG{Gp9S
file://fixdown k/yoRv%
private void fixDown(int k) { Ln})\
UDK)
int j; bi bjFg
while ((j = k << 1) <= size) { G~I@'[ur
if (j < size %26amp;%26amp; queue[j] j++; L= fz:H
if (queue[k]>queue[j]) file://不用交换 nDSmr
break; c?{&=,u2
SortUtil.swap(queue,j,k); V\"x#uB
k = j; h$FpH\-
} 1#9 Q1@'OS
} ]N^a/&}*
private void fixUp(int k) { FaC;vuSpy
while (k > 1) { eEIa=MB*
int j = k >> 1; $4y;F]
if (queue[j]>queue[k]) <8>gb!D G
break; Bg*Oj)NM
SortUtil.swap(queue,j,k); 2Ke?*
k = j; D}wM$B@S
} i*' 6"
} oq4*m[
{(i>$RG_
} |"vUC/R2&
gf^"sfNk
} MMglo3
A=/|f$s+
SortUtil: jemg#GB8
0 V:z(r
package org.rut.util.algorithm; mYf7?I~
x8xSA*@k
import org.rut.util.algorithm.support.BubbleSort; 0!YB.=\{_q
import org.rut.util.algorithm.support.HeapSort; sXdNlR&
import org.rut.util.algorithm.support.ImprovedMergeSort; ;#G)([
import org.rut.util.algorithm.support.ImprovedQuickSort; 8*;88vW"2
import org.rut.util.algorithm.support.InsertSort; Q<.847 )
import org.rut.util.algorithm.support.MergeSort; mdW8RsR
import org.rut.util.algorithm.support.QuickSort; \J r ta
import org.rut.util.algorithm.support.SelectionSort; |-l)$i@
import org.rut.util.algorithm.support.ShellSort; gf()NfUvRH
p9ligs7V'
/** YoV^Y&:9<
* @author treeroot p}%T`e=Z9
* @since 2006-2-2 ;ZMm6o
* @version 1.0 sf\p>gb
*/ Q%61_l
public class SortUtil { 8{aS$V"
public final static int INSERT = 1; s*.CJ
public final static int BUBBLE = 2; [hE0 9W
public final static int SELECTION = 3; bLyU;
public final static int SHELL = 4; <RfPd+</
public final static int QUICK = 5; ^W|B Xxo
public final static int IMPROVED_QUICK = 6; #gzY _)E
public final static int MERGE = 7; RM8p[lfX
public final static int IMPROVED_MERGE = 8; zyyt`
public final static int HEAP = 9; Nf(Np1?;c
]3Z?Q
public static void sort(int[] data) { 6 KuB<od
sort(data, IMPROVED_QUICK);
'k[O?}
} #flOaRl.
private static String[] name={ f>\guuG
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :=q blc
}; 5}d"nx
gPs%v`y)*D
private static Sort[] impl=new Sort[]{ vovc,4}
new InsertSort(), bi`{ k\3A
new BubbleSort(), |F_Z
new SelectionSort(), ag Za+a
new ShellSort(), /XtpGk_1)
new QuickSort(), n#,<-Rb-
new ImprovedQuickSort(), #w\Bc\
new MergeSort(), VhdMKq~`
new ImprovedMergeSort(), oG5:]/F
new HeapSort() Vsh7>|@
}; !QK~l
;8z40cD
public static String toString(int algorithm){ T~B'- >O
return name[algorithm-1]; >05_#{up
} K:Mm?28s
L'XX++2
public static void sort(int[] data, int algorithm) { M>H4bU(
impl[algorithm-1].sort(data); ?'F>DN
} 29P vPR6
2,.%]U
public static interface Sort { `uRf*-
public void sort(int[] data); E[N5vG<
} ]^9B%t
s9
C1
qyjlR
public static void swap(int[] data, int i, int j) { iwb]mJUA
int temp = data; # 3{g6[Y
data = data[j]; VT.BHZ
data[j] = temp; 4Y>v+N^
} >y<yFO{
} TUeW-'/1