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。 V_Oj?MMpn
插入排序: {expx<+4F
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package org.rut.util.algorithm.support; v\:P_J
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import org.rut.util.algorithm.SortUtil; { |[n>k
/** aZ{]t:]
* @author treeroot #0;ULZ99aH
* @since 2006-2-2 yxz"9PE/P
* @version 1.0 dCkk5&2n
*/ PhOtSml0
public class InsertSort implements SortUtil.Sort{ y,QJy=?
:gJ?3LwTf
/* (non-Javadoc) t\%gP@?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /"%(i#<)xs
*/ "`4V^1
public void sort(int[] data) { yq2pg8%
int temp; kL1StF#p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6@[7
} :AM5EO
} =1'vXPv`
} j6_tFJT
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} O^,%V{]6\
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冒泡排序: $06[D91'
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package org.rut.util.algorithm.support; QFtf.")[.
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import org.rut.util.algorithm.SortUtil; oX
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/** wfXm(RYM
* @author treeroot
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* @since 2006-2-2 3/i_?G
* @version 1.0 nF!6
*/ `oq][|
public class BubbleSort implements SortUtil.Sort{
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}[gk9uM_7
/* (non-Javadoc) ecRY,MN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?' :v):J}
*/ awic9uMH
public void sort(int[] data) { BQ7p<{G
int temp; Q'B2!9=LB
for(int i=0;i for(int j=data.length-1;j>i;j--){ %P2l@}?a
if(data[j] SortUtil.swap(data,j,j-1); $)O=3dNbo
} q&RezHK l
} R@8pKCL.
} dRD t.U!T
} -)p
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} L
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选择排序: 0<";9qN)6
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package org.rut.util.algorithm.support; |r%NMw #y
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import org.rut.util.algorithm.SortUtil; =h
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/** r$
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* @author treeroot 4fyds< f
* @since 2006-2-2 8*iIJ
* @version 1.0 UTLuzm
*/ &x YO6_.
public class SelectionSort implements SortUtil.Sort { #NZ#G~oeO
^.|P&f~
/* p?v. 42R:z
* (non-Javadoc) _P{f+HxU
* 'fIoN%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f~0CpB*X
*/ # zbAA<f
public void sort(int[] data) { O DO'!T-
int temp; O8Dav^\y?
for (int i = 0; i < data.length; i++) { :[r/
Y
int lowIndex = i; 9z$fDs}.q
for (int j = data.length - 1; j > i; j--) { Sr#\5UDS
if (data[j] < data[lowIndex]) { s1GR!*z>
lowIndex = j; N a$eeM
} $"P[nNW3
} DQ*T2*L
SortUtil.swap(data,i,lowIndex); nUy. gAb
} o#~Lb9`@U
} fR$_=WWN>h
' %&gER
} 9-3, DxZ}
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Shell排序: EQTJ=\WFF
6^l|/\Y{
package org.rut.util.algorithm.support; w5+H9R6
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import org.rut.util.algorithm.SortUtil; lPyY
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/** r&y0`M
* @author treeroot 31^Jg
* @since 2006-2-2 ouE/\4'NB
* @version 1.0 wr-/R"fX
*/ [Xyu_I-c
public class ShellSort implements SortUtil.Sort{ U5RLM_a@M
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/* (non-Javadoc) 4Y5lP00!}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YLsOA`5X
*/ 2if7|o$=
public void sort(int[] data) { MfA@)v
for(int i=data.length/2;i>2;i/=2){ h4#y'E!,Z
for(int j=0;j insertSort(data,j,i); F(?O7z"d
} .<Rw16O
} qeUT]*
w
insertSort(data,0,1); QJ,[K_
} 5(=5GkE)>
o"!C8s_6
/** -^aJ}[uaI
* @param data [o"<DP6w
* @param j CBr(a'3{Z
* @param i 3%[;nhbA7
*/ xt&4]M
V
private void insertSort(int[] data, int start, int inc) { H[_i=X3-~
int temp; mPL0s
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T!7B0_
} )! eJW(
} AxtmG\o>
} ?Gl]O3@3
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} )GYnQoV4
@ tvz9N
快速排序: g&*,j+$ }
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package org.rut.util.algorithm.support; = ;cTm5d;T
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import org.rut.util.algorithm.SortUtil; vc0LV'lmg
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/** Uv m:`e~?
* @author treeroot ZXIw^!8@/
* @since 2006-2-2 oo\7\b#Jx
* @version 1.0 @V&c=8)8
*/ g\% Z+Dc
public class QuickSort implements SortUtil.Sort{ *
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/* (non-Javadoc) 9Vru,7g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5%%e$o+
*/ 4`B3Kt`o
public void sort(int[] data) { _a#k3r
quickSort(data,0,data.length-1); ,v%'2[}
} 4_`(c1oA
private void quickSort(int[] data,int i,int j){ 1Q/=s,{u
int pivotIndex=(i+j)/2; /go|r '
file://swap 6CCm1F{`
SortUtil.swap(data,pivotIndex,j); AP1&TQ,&
%s! |,Cu
int k=partition(data,i-1,j,data[j]); H76iBJ66
SortUtil.swap(data,k,j); s IFE:/1,
if((k-i)>1) quickSort(data,i,k-1); lrAhdi
if((j-k)>1) quickSort(data,k+1,j); -VeCX]
xg}Q~,:
} b'W.l1]<-
/** Q5^ #:uZ
* @param data ^TtL-|I
* @param i Y4C<4L?
* @param j P)l_ :;&
* @return f"*k>=ETI
*/ &|<f|BMX
private int partition(int[] data, int l, int r,int pivot) { iF9d?9TWl
do{ o! l Ykud
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VsJiE0'%
SortUtil.swap(data,l,r); :r>^^tGT!
} L#",.x
while(l SortUtil.swap(data,l,r); :r(dMU3%
return l; nwp(% fBo
} wFX9F3m
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} &7i&"TNptP
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改进后的快速排序: /w1M%10
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package org.rut.util.algorithm.support; 1uO2I&B
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import org.rut.util.algorithm.SortUtil; R_O=WmD
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/** _jc_(;KPF
* @author treeroot V)5K/ U{
* @since 2006-2-2 rlaeqG
* @version 1.0 9O- 2
*/ lm6hFvEZ
public class ImprovedQuickSort implements SortUtil.Sort { &JXb) W
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private static int MAX_STACK_SIZE=4096; ~o>Gm>5!HH
private static int THRESHOLD=10; Zwm/ c]6`
/* (non-Javadoc) drMMf[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H %c6I
*/ {#:31)P
public void sort(int[] data) { M.K^W `
int[] stack=new int[MAX_STACK_SIZE]; j*5IRzK1%0
$&=xw _
int top=-1; 8PzGUn;\
int pivot; fZezDm(Q
int pivotIndex,l,r; 6Cz
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stack[++top]=0; @)BO`;*$fF
stack[++top]=data.length-1; WR3,woo
43pe6 ^.
while(top>0){ |mP};&b
int j=stack[top--]; lH;V9D^
int i=stack[top--]; A#6zINK#B
=gs-#\%
pivotIndex=(i+j)/2; (-g*U#
pivot=data[pivotIndex]; <n4` #d
V
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SortUtil.swap(data,pivotIndex,j); J*[@M*R;&
qa-FLUkIk!
file://partition r=&,2meo
l=i-1; 4 sax
r=j; 'w27Lt'V
do{ ni&|;"Nt-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uN:KivVe
SortUtil.swap(data,l,r); HeO:=OE~>
} y?&hA!x
while(l SortUtil.swap(data,l,r); kzjuW
SortUtil.swap(data,l,j); ujRXAN@mC
a3>/B$pE
if((l-i)>THRESHOLD){ :{#O
stack[++top]=i; odSPl{. >d
stack[++top]=l-1; S~i9~jA
} >UMxlvTg&
if((j-l)>THRESHOLD){ 0muC4
stack[++top]=l+1; B
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stack[++top]=j; t&xoi7!$
} 8 ECX[fw
U
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} 6,A|9UX=`
file://new InsertSort().sort(data); F?|Efpzow?
insertSort(data); *m}8L%<HT
} X>Vc4n<}
/** =w!ik9
* @param data \c
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*/ HiA E9
private void insertSort(int[] data) { Vw1>d+<~-)
int temp; }! EVf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dgjK\pH`h
} -B H/)$-$
} O|V0WiY<
} B=!!R]dxA
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} J(l\VvK
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归并排序: ?1D!%jfi
BS*79heY
package org.rut.util.algorithm.support; |gA@WV-%
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import org.rut.util.algorithm.SortUtil; >`\.i,X.D
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/** `*3A7y
* @author treeroot bGCC?}\
* @since 2006-2-2 ==OUd6e}
* @version 1.0 >jX"
*/ &t^*0/~
public class MergeSort implements SortUtil.Sort{ c|k_[8L
2n,z`(=
/* (non-Javadoc) &{V |%u}v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Pvi+:6\Y
*/ 8f9wUPr
public void sort(int[] data) { ZC N}iQu4
int[] temp=new int[data.length]; [(heE
mergeSort(data,temp,0,data.length-1); 1ysfpX{=
} -Cs( 3[
nzC *mPX8
private void mergeSort(int[] data,int[] temp,int l,int r){ %):_
int mid=(l+r)/2; cu N9RG
if(l==r) return ; Z*m^K%qJ
mergeSort(data,temp,l,mid); A?H#bRAs
mergeSort(data,temp,mid+1,r); Hu"$)V
for(int i=l;i<=r;i++){ 8>9Mh!t}(I
temp=data; Z)s
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} hzsQK_;S
int i1=l; 2iG+Ek-?"
int i2=mid+1; )X0=z1$
for(int cur=l;cur<=r;cur++){ uu.X>agg
if(i1==mid+1) '4 *0Pw
data[cur]=temp[i2++]; <= o<lRU
else if(i2>r) L5bq\
data[cur]=temp[i1++]; SBreA-2
else if(temp[i1] data[cur]=temp[i1++]; FJc8g6M
else x/DV> Nfn
data[cur]=temp[i2++]; 8ttJ\m
} ]q1w@)]n}
} = LNU%0m
qWhW4$7x
} Y~vk>ZC
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改进后的归并排序: X"!j_*&ED
#<xFO^TB
package org.rut.util.algorithm.support; k24I1DlR8
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import org.rut.util.algorithm.SortUtil; ::>|[ND
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/** f'oTN!5WF
* @author treeroot g{V(WyT@
* @since 2006-2-2 p<
7rF_?W0
* @version 1.0 4Hz3KKu
*/ 4
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public class ImprovedMergeSort implements SortUtil.Sort { ^
8 }P_
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private static final int THRESHOLD = 10; yMN JHiE/
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/* M{J>yN
* (non-Javadoc) g>VtPS5 y
* q-(~w!e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ni/s/^
*/ U4"^NLAq
public void sort(int[] data) { |8'}mjs.Q
int[] temp=new int[data.length]; v#?DWeaFS_
mergeSort(data,temp,0,data.length-1); ?{ )'O+s
} ;0dH@b
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private void mergeSort(int[] data, int[] temp, int l, int r) { M2Nh3ijr
int i, j, k; VeWh9:"bJ
int mid = (l + r) / 2; *:CTIV5N0
if (l == r) M7/5e3
return; H1k)ya x4_
if ((mid - l) >= THRESHOLD) -s0SQe{!_
mergeSort(data, temp, l, mid); zIF1A*UH
else %@PcQJg U<
insertSort(data, l, mid - l + 1); 4mDHAR%D
if ((r - mid) > THRESHOLD) `j{3|C=
mergeSort(data, temp, mid + 1, r); ~ EBaVl ({
else 2H`r:x<Z-
insertSort(data, mid + 1, r - mid); (2;Aqx5i
PB^rniYh
for (i = l; i <= mid; i++) { w5i*pOG)Z
temp = data; #`_W?-%^
} K6->{!8]k
for (j = 1; j <= r - mid; j++) { jwk+&S
temp[r - j + 1] = data[j + mid]; 8XH;<z<oJ
} =8l' [
int a = temp[l]; k M/:n
int b = temp[r]; 0kUhz\"R:q
for (i = l, j = r, k = l; k <= r; k++) { wrkw,H
if (a < b) { P'Y(f!%
data[k] = temp[i++]; u0wu\
a = temp; 96\FJHtZ
} else { cIO/8D#zU
data[k] = temp[j--]; }@bp v
b = temp[j]; 2?ue.1C
} +O8[4zn&k
} OAkqPG&w
} GG#-x$jK
vE[d& b[
/** I;XM4a
* @param data XO;_F"H=
* @param l D\G 8p;
* @param i ()|e
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*/ aUMiRm-
private void insertSort(int[] data, int start, int len) { cUug}/!I
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y;ey(
} c\.)vH
} F7} yt
} SVa^:\"$[
} glch06
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堆排序: I]HYqI
(1=@.srAzK
package org.rut.util.algorithm.support; |Gq3pL<jkC
_oZ3n2v}@
import org.rut.util.algorithm.SortUtil; !IJ
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/** IYe[IHny1
* @author treeroot &DQ_qOKD
* @since 2006-2-2 [p4([ef
'
* @version 1.0 rv{ Wti[
*/ s {*rBX8N
public class HeapSort implements SortUtil.Sort{ -n@,r%`UK
.\`MoH
/* (non-Javadoc) tuH#Cy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BHpay
*/ &4wSX{c/P
public void sort(int[] data) { +sx(q@
MaxHeap h=new MaxHeap(); &(<Gr0
h.init(data); Mprn7=I{Tg
for(int i=0;i h.remove(); #: EhGlq8
System.arraycopy(h.queue,1,data,0,data.length); GfgHFv
} &x (D%+
k7JC~D
E#
private static class MaxHeap{ =glG |
+ $M<ck?Bo
void init(int[] data){ XFFm'W6@
this.queue=new int[data.length+1]; +v%+E{F$+
for(int i=0;i queue[++size]=data; .5HD i-
fixUp(size); 9|jMN
j]vo
} l/?bXNt
} MNh:NFCRA
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private int size=0; Z{u]qI{l
`m V(:
private int[] queue; bz:En'2>F
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public int get() { oVl:g:K40
return queue[1]; b 2\J<Nw
} eLH=PDdO
A
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public void remove() { G=e'H-
SortUtil.swap(queue,1,size--); "Ml#,kU<T
fixDown(1); ,H|K3nh
} pw))9~XU
file://fixdown s&%r?
private void fixDown(int k) { k-4z2qB
int j; Yi-,Pb?
while ((j = k << 1) <= size) { 87pu\(,'
if (j < size %26amp;%26amp; queue[j] j++; 7iy 2V;}
if (queue[k]>queue[j]) file://不用交换 Us[F@
break; _or_Vw!
SortUtil.swap(queue,j,k); asW
W@E
k = j; {#t7lV'4
} E?&YcVA
} R<3 -!p1v
private void fixUp(int k) { iQ;lvOja
while (k > 1) { s_Z5M2o
int j = k >> 1; uv$utu><
*
if (queue[j]>queue[k]) %f\j)qw
break; $5#DU__F/
SortUtil.swap(queue,j,k); MTR+|I3V
k = j; 4Qi-zNNB
} ,\T `gh
} >of9m
CTqhXk[
} &i805,lx
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} ^c}kVQ\g3
>YdLB@
SortUtil: [pt U}
[$]-W$j+
package org.rut.util.algorithm; D7IhNWrgj
B_@p@6z
import org.rut.util.algorithm.support.BubbleSort; -g"Wi@Qr
import org.rut.util.algorithm.support.HeapSort; >N0L
import org.rut.util.algorithm.support.ImprovedMergeSort; cI6Td*vM
import org.rut.util.algorithm.support.ImprovedQuickSort; ?:5/4YC
import org.rut.util.algorithm.support.InsertSort; (s+}l?
import org.rut.util.algorithm.support.MergeSort; )*}?EI4.
import org.rut.util.algorithm.support.QuickSort; @]]\r.DG
import org.rut.util.algorithm.support.SelectionSort; A)#Fyde
import org.rut.util.algorithm.support.ShellSort; eOb)uIF
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/** H ~<.2b
* @author treeroot ;iN[du
* @since 2006-2-2 1yS:`
* @version 1.0 '^Q$:P{G?
*/ *\0h^^|@
public class SortUtil { x9]vhR/av
public final static int INSERT = 1; L8pKVr
public final static int BUBBLE = 2; ihct~y-9W
public final static int SELECTION = 3; ?5[$d{ Gjl
public final static int SHELL = 4; !6 kn>447Y
public final static int QUICK = 5; 3z k},8fu
public final static int IMPROVED_QUICK = 6; K,bX<~e5
public final static int MERGE = 7; v# fny
public final static int IMPROVED_MERGE = 8; _GoFwVO
public final static int HEAP = 9; Lq#!}QcW=
,{'ZP_
public static void sort(int[] data) { ^C2SLLgeJ
sort(data, IMPROVED_QUICK); QqC-ztz
} R2Q1Rk#
private static String[] name={ =QwT)KRB%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dA#'HMh@
}; Nc^:v/(P
}+:X= @Z@
private static Sort[] impl=new Sort[]{ 7Zft]C?|@
new InsertSort(), @6y)wA9Yx
new BubbleSort(), e\ZV^h}TQ
new SelectionSort(), gP!k[E,Q8
new ShellSort(), Gfepm$*%
new QuickSort(), "`KT7
new ImprovedQuickSort(), VTO92Eo
new MergeSort(), eV9,G8
new ImprovedMergeSort(), 0,cU^HMA
new HeapSort() B}I9+/|{
}; d(vt0
,W$&OD
public static String toString(int algorithm){ =+4om*
return name[algorithm-1]; CE4Kc33OU|
} 1_mqPMm
8%Ak
public static void sort(int[] data, int algorithm) { ,H/BW`rL]#
impl[algorithm-1].sort(data); N.V5>2
} #Fh:z4
OFZo"XtF
public static interface Sort { *b`1+~p_2
public void sort(int[] data); &<(&u`S
} 'qoaMJxN`
<I{Yyl^
public static void swap(int[] data, int i, int j) { u} [.*e
int temp = data; mW3IR3b
data = data[j]; =)!~t/
data[j] = temp; ! ^aJS'aq
} cmp@Ow"c
} Vzh\1cF