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。 aicvu(%EE
插入排序: MM+x}g.?
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package org.rut.util.algorithm.support; H%`$@U>
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import org.rut.util.algorithm.SortUtil; 4Z'/dI`
/** !c 3c%=W
* @author treeroot ^`BiA'gPPC
* @since 2006-2-2 -'q#u C
* @version 1.0 8ClOd<I
*/ z' oK
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public class InsertSort implements SortUtil.Sort{ !06
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/* (non-Javadoc) E.ugr])
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bSG}I|
*/ %3Ba9Nmid
public void sort(int[] data) { [9hslk
int temp; g?TPRr~$9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MXVQ90
} pZVT:qFF
} 6\9
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} v--Qbu
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} 1" k_l.\,0
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冒泡排序: PG51+#
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package org.rut.util.algorithm.support; `f|Gw5R
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import org.rut.util.algorithm.SortUtil; t\\oGH
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/** Q+i
* @author treeroot z(o zMH
* @since 2006-2-2 &d%0[Ui`
* @version 1.0 x>C_O\
*/ fV "gL(7
public class BubbleSort implements SortUtil.Sort{ ' F,.y6QU
=yR$^VSY
/* (non-Javadoc) .=kXO{>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 R*
*/ ?Q?=I,2bP
public void sort(int[] data) { o(gEyK
int temp; \#yKCA';
for(int i=0;i for(int j=data.length-1;j>i;j--){ s%6{X48vY^
if(data[j] SortUtil.swap(data,j,j-1); L
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} (=jztIZC
} 9"g!J|+
} (yr<B_Y'MY
} VB}4#-dG?
y
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} f4mQDRlD
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选择排序: l KdY!j"
VfV|fuW
package org.rut.util.algorithm.support; cFV)zFu
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import org.rut.util.algorithm.SortUtil; 2HX#:y{\l
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/** T4c]VWtD
* @author treeroot [& d"Z2gK
* @since 2006-2-2 u/ Gk>F
* @version 1.0 \>G :mMk/
*/ 0#/N ZO
public class SelectionSort implements SortUtil.Sort { U!TSAg21P
E! s?amM4
/* R(1N]>
* (non-Javadoc) qr<+@Q
* ~43T$^<w;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `[(.Q
*/ :TZ</3Sw
public void sort(int[] data) { dlf nhf
int temp; _rN1(=J
for (int i = 0; i < data.length; i++) { ;_nV*G.y#^
int lowIndex = i; o8ERU($/
for (int j = data.length - 1; j > i; j--) { L>ruNw'-K
if (data[j] < data[lowIndex]) { _u]S/X-
lowIndex = j; ^&|KuI+u
} n>o0PtGxC
} o4U[;.?c
SortUtil.swap(data,i,lowIndex); e,X{.NS
} yu.N> [=
} O: J;zv\
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} (rT1wup
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Shell排序: B/^1uPTZ71
wBJP8wES=
package org.rut.util.algorithm.support; c]x'}Kc
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import org.rut.util.algorithm.SortUtil; 4k]DktY}.
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/** z0F'zN3J
* @author treeroot ;,2;J3,pA
* @since 2006-2-2 dBeZx1Dy
* @version 1.0 aGx[?}=
*/ jTh^#Q
public class ShellSort implements SortUtil.Sort{ g.:b\JE `
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k
/* (non-Javadoc) |'SgGg=E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b]oPx8*'
*/ `at>X&Ce,
public void sort(int[] data) { ,UA-Pq3}
for(int i=data.length/2;i>2;i/=2){ u 6"v}gN
for(int j=0;j insertSort(data,j,i); kKHGcm^r
} !]l!I9
} $j"TPkW{M
insertSort(data,0,1); |9;MP&68
} Y2oN.{IH
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/** Mv 1V
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* @param data ln*_mM/Q%
* @param j BIn7<.&
* @param i ;XDGlv%
*/ OGGuV Y
private void insertSort(int[] data, int start, int inc) { *B0
7-
int temp; p( 6!7t:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B4/\RC2
} Z]\IQDC
} NNTUl$
} 5n#@,V.O/
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} IS[&V&.n
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快速排序: "l7))>lL
dp=#|!jc
package org.rut.util.algorithm.support; G@+AB*Eu
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import org.rut.util.algorithm.SortUtil; YYi:d=0<SO
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/** e<E]8GAF
* @author treeroot t$k$Hd';
* @since 2006-2-2 Ed ,O>(
* @version 1.0 z'rB_l
*/ ,nnVHBN
public class QuickSort implements SortUtil.Sort{ =L F9im
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/* (non-Javadoc) ]4
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _rIFwT1]
*/ \|< 5zL
public void sort(int[] data) { 3A)Ec/;~
quickSort(data,0,data.length-1); ]R7zvcu&
} t9Y?0O}/
private void quickSort(int[] data,int i,int j){ >SSRwYIN
int pivotIndex=(i+j)/2; OO /Pc
file://swap kA/V=xO<
SortUtil.swap(data,pivotIndex,j); &LM ^,xx}
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int k=partition(data,i-1,j,data[j]); v9S1<|jN
SortUtil.swap(data,k,j); fo$Ac
if((k-i)>1) quickSort(data,i,k-1); bPhb d
if((j-k)>1) quickSort(data,k+1,j); fd&=\~1_$
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} xZ.c@u6:
/** Au[H!J
* @param data c.JMeh
* @param i ry[NR$L/m
* @param j P+s-{vv{0
* @return $ri'tJ+
*/ E2xcd#ZD
private int partition(int[] data, int l, int r,int pivot) { h}@)oSX
}
do{ 7O^'?L<C'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )gb gsQZ
SortUtil.swap(data,l,r); N8K @ch3=P
} 50VH>b_
while(l SortUtil.swap(data,l,r); *E1 v
return l; J[7|Ul1
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} {I"`(
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} mO~A}/je
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改进后的快速排序: [T>a}}@
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package org.rut.util.algorithm.support; 0//B+.#
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import org.rut.util.algorithm.SortUtil; TLC&@o
:
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/** l;'#!hC)
* @author treeroot Btu=MUS
* @since 2006-2-2 d%C:%d
* @version 1.0 Ad'b{C%
*/ kIlK"=
public class ImprovedQuickSort implements SortUtil.Sort { ;+W9EbY2
:Tu%0="ye
private static int MAX_STACK_SIZE=4096; :4'Fq;%C
private static int THRESHOLD=10; D/7hVwMw:
/* (non-Javadoc) = m6yH_`@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1p]Z9$Y
*/ 6~b]RZe7
public void sort(int[] data) { cV+x.)a.
int[] stack=new int[MAX_STACK_SIZE]; w\f>.N
kV$$GLD\
int top=-1; YnLwBJ 2i
int pivot; L^Q q[>
int pivotIndex,l,r; rh%-va9
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stack[++top]=0; '<v_YxEn
stack[++top]=data.length-1; !/|^
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'
+*,|;?
while(top>0){ (bBr O74lR
int j=stack[top--]; KWzJ
int i=stack[top--]; klqN9d9k
~3F\7%Iqc
pivotIndex=(i+j)/2; }M+2 ,#l
pivot=data[pivotIndex]; !?%'Fy6t
JLZ=$ d
SortUtil.swap(data,pivotIndex,j); MG6y
G"._]3CPF
file://partition >QJfTkD$
l=i-1; \XI9 +::%
r=j; 057$b!A-a
do{ h~zG*B5F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |m5 E%E
SortUtil.swap(data,l,r); 4X^{aIlshk
} _# mo6')j
while(l SortUtil.swap(data,l,r); v7kR]HU[y
SortUtil.swap(data,l,j); hExw} c
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if((l-i)>THRESHOLD){ 2*<'=*zaQ
stack[++top]=i; `4N{x.N
stack[++top]=l-1; Pa}B0XBWP
} LtDQgel"
if((j-l)>THRESHOLD){ Uq8=R)1<|d
stack[++top]=l+1; @T6Z3Zj}
stack[++top]=j; G>q16nS~KP
} :>t^B+
1FO T
} >tFv&1iR
file://new InsertSort().sort(data); NcVsQV
insertSort(data); XA%a7Xtni
} iH#b"h{w
/** z%pD3J?>
* @param data 9^5D28y
*/ aTx*6;-PH
private void insertSort(int[] data) { `AO<r
int temp; /j0zb&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zJJ6"9sl
} :y!%GJW
} ]|y]?7
} QlFt:?7f
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} kQY+D1
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归并排序: 4\6-sL?rW
W6>SYa
package org.rut.util.algorithm.support; .;'3Roi
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import org.rut.util.algorithm.SortUtil; nHB=*Mj DV
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/** ~^GY(J'
* @author treeroot .M$}.v
* @since 2006-2-2 @^)aUOe
* @version 1.0 xa?#wY
b
*/ }}VB#
public class MergeSort implements SortUtil.Sort{ -#nfO*H}
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/* (non-Javadoc) jW G=k#WN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /W,K% s]
*/ i(k]}Di:
public void sort(int[] data) { R1%2]?
int[] temp=new int[data.length]; {MaFv
mergeSort(data,temp,0,data.length-1); l6C^,xU~IX
} $j\UD8Hj'-
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private void mergeSort(int[] data,int[] temp,int l,int r){ (Wm4JmX%
int mid=(l+r)/2; <%2A,
Vz"
if(l==r) return ; {D( _"
mergeSort(data,temp,l,mid); _E{hB
mergeSort(data,temp,mid+1,r); P=j89-e
for(int i=l;i<=r;i++){ :gNTQZR
temp=data; {Va"o~io
} $YyN-C
int i1=l; 3/w) mY-o
int i2=mid+1; >WsRCBA
for(int cur=l;cur<=r;cur++){ f#W5Nu'*!
if(i1==mid+1) DjX*2O
data[cur]=temp[i2++]; mu1Lg s$;
else if(i2>r) 8>}^W
data[cur]=temp[i1++]; s]X]jfA.
else if(temp[i1] data[cur]=temp[i1++]; P
K]$D[a0
else 4ZZ/R?AiK
data[cur]=temp[i2++]; gDmwJr
} C98 Ks
} V0Z\e
_I
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} ET&Q}UO E
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改进后的归并排序: <u"h'e/oW_
U1>VKP;5Nn
package org.rut.util.algorithm.support; {cNH|
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import org.rut.util.algorithm.SortUtil; Q6?}/p
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/** _TRO2p0
* @author treeroot c==` r
C
* @since 2006-2-2 r#K;@wu2
* @version 1.0 |Q'l&Gt6
*/ @Ik@1
public class ImprovedMergeSort implements SortUtil.Sort { u'?yc"d>#
S'I{'jP5
private static final int THRESHOLD = 10; -n-rKN.T
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/* mv1_vF:
* (non-Javadoc) QDRgVP
* ;plzJ6>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -1Luyuy/`
*/ 39W6"^q"o
public void sort(int[] data) { (L)tC*Qjc
int[] temp=new int[data.length]; >?$+hZz<
mergeSort(data,temp,0,data.length-1); 0nF>E@ j^[
} mxYsP6&
dJh T}"x
private void mergeSort(int[] data, int[] temp, int l, int r) { WheJ 7~
int i, j, k; b ;Vy=f
int mid = (l + r) / 2; *CA7
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if (l == r) Ba$Ibq,r/
return; #K3A{
jb,
if ((mid - l) >= THRESHOLD) w/KCuW<
mergeSort(data, temp, l, mid); {5f?y\Z
else #Fua^]n
insertSort(data, l, mid - l + 1); }NMkL l]J
if ((r - mid) > THRESHOLD) ys5b34JN
mergeSort(data, temp, mid + 1, r); B}.G(-u?7
else rmCrP(
insertSort(data, mid + 1, r - mid); f3 lKdXnP
;P-xKRU!Xx
for (i = l; i <= mid; i++) { yK +&1U2`
temp = data; yTDlDOmV!
} V}l>p?
for (j = 1; j <= r - mid; j++) { }ST9&wi~
temp[r - j + 1] = data[j + mid]; M'=27!D^
} *3hqz<p4:
int a = temp[l]; 3f`+-&|M
int b = temp[r]; UGy~Ecv
for (i = l, j = r, k = l; k <= r; k++) { glk_*x
if (a < b) { <t{T]i+
data[k] = temp[i++]; v'C`;I
a = temp; !O=J8;oLk
} else { U!"+~d)
data[k] = temp[j--]; U$J l5[`F^
b = temp[j]; nj*B-M\p
} H1PW/AW
} Q?GmSeUi
} !s;+6Sy
~;Ga65_6_
/** aDx{Q&
* @param data H)$-T1Wx4
* @param l Rx$5#K!%M
* @param i ,zy4+GW
*/ N#')Qz:P
private void insertSort(int[] data, int start, int len) { Go}C{(4T
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I$4GM
} _LV;q! /j
} C:n55BE9
} Q(-:)3g[aL
} Vwp fkD`
[@OXvdTV
堆排序: (hefpqpi
%@Nuzdp
package org.rut.util.algorithm.support; taXS>*|B
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import org.rut.util.algorithm.SortUtil; ]3_oT^$:
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/** A L#"j62
* @author treeroot <_@ S@t)
* @since 2006-2-2 FAVw80?5k
* @version 1.0 Ed3 *fY
*/ f1;Pzr
public class HeapSort implements SortUtil.Sort{ ,z1X{
O2E6F^.pYw
/* (non-Javadoc) 8CxC`*L(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C7`FM@z
*/ r%hnl9
public void sort(int[] data) { U:eahK
MaxHeap h=new MaxHeap(); ?d1H]f<M
h.init(data); T?W`g>yM
for(int i=0;i h.remove(); 3tMFJ ;*`
System.arraycopy(h.queue,1,data,0,data.length); iWu$$IV?-
} |1G /J[E
U}7a;4?
private static class MaxHeap{ "
1YARGu
B*A{@)_
void init(int[] data){ i,BE]w
this.queue=new int[data.length+1]; 83UIH0(
for(int i=0;i queue[++size]=data; $u`y
fixUp(size); 95;q] =U
} ajuwP1I
} 4,kT4_&,
08&DP^NS
private int size=0; N^A&DrMF
/#M|)V*wn
private int[] queue; %ci/(wL
@cNX\$J
public int get() { ]R/VE"-
return queue[1]; 6X5`npf
} -"iGcVV
5QU7!jbI
public void remove() { 2E^zQ>;01
SortUtil.swap(queue,1,size--); a!}.l< )
fixDown(1); wn[q?|1
} k/W$)b:Of`
file://fixdown 6;U]l.
private void fixDown(int k) { 4f<%<Z
int j; \3(d$_:b
while ((j = k << 1) <= size) { {w.rcObIw+
if (j < size %26amp;%26amp; queue[j] j++; iCCY222:
if (queue[k]>queue[j]) file://不用交换 MzRURH,
break; @2-Eky
SortUtil.swap(queue,j,k); PZ~uHX_d>
k = j; *Z=K9y,IC
} #uJGXrGt=
} +Gi~VW.
private void fixUp(int k) { *4Cq,o`o>
while (k > 1) { x|G#oG)_
int j = k >> 1; RuDn1h#u{
if (queue[j]>queue[k]) .WA(X5
break; A{lzQO
SortUtil.swap(queue,j,k); 7nB@U$]-Sz
k = j; |D%i3@P&ZR
} !.mMO_4}
} 6|3$43J,F
~M%r.WFpA
} ,2vPmff
2/f:VB?<T
} gT*0WgB
P]-d(N}/H
SortUtil: VZ{aET!
j8?z@iG
package org.rut.util.algorithm; 3!&lio+<
;=1]h&S
import org.rut.util.algorithm.support.BubbleSort; t0p^0
import org.rut.util.algorithm.support.HeapSort; =]yJvn"
import org.rut.util.algorithm.support.ImprovedMergeSort; Q4r)TR ,
import org.rut.util.algorithm.support.ImprovedQuickSort; MCU{@\?Xf
import org.rut.util.algorithm.support.InsertSort; Fku9hB
import org.rut.util.algorithm.support.MergeSort; 9:CJl6~N)#
import org.rut.util.algorithm.support.QuickSort; |i5A
F\w
import org.rut.util.algorithm.support.SelectionSort; nC^?6il
import org.rut.util.algorithm.support.ShellSort; Ok[y3S
GEXT8f(7
/** g,U~3#
* @author treeroot MjNCn&c
* @since 2006-2-2 SeqnO.\
* @version 1.0 ^?(A|krFg
*/ q05_5
public class SortUtil { b5_(Fv
public final static int INSERT = 1; 8
ZD1}58U4
public final static int BUBBLE = 2; g![]R-$
public final static int SELECTION = 3; AxLnF(eG
public final static int SHELL = 4; 4;WeB
public final static int QUICK = 5; u&1n~t`
public final static int IMPROVED_QUICK = 6; Udv5Y
public final static int MERGE = 7; 5FcKY_
public final static int IMPROVED_MERGE = 8; rVq=,>M9
public final static int HEAP = 9; T1c2J,+}R
mw";l$Aq}
public static void sort(int[] data) { C,+6g/{
sort(data, IMPROVED_QUICK); nJ |O,*`O
} @$z/=g sy
private static String[] name={ [TvH7ott'1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" X*VHi
}; R:kNAtK
Y15KaoK?
private static Sort[] impl=new Sort[]{ pUki!TA
new InsertSort(), h.FC:ym"
new BubbleSort(), n}PK0
new SelectionSort(), ivsp):W
new ShellSort(), }2-<}m9}
new QuickSort(), {@1.2AWg
new ImprovedQuickSort(), x&7%U
new MergeSort(), LS@[O])$'
new ImprovedMergeSort(), 9B")/Hz_
new HeapSort() qN}kDT
}; ~>zml1aJ6
G^]T
public static String toString(int algorithm){ +,<\LIP
return name[algorithm-1]; tmiRv.Mhn<
} "I?sz)pxG
1XQJ#J1/
public static void sort(int[] data, int algorithm) { ]8KAat~J
impl[algorithm-1].sort(data); xnWCio>M
} Xm&L@2V
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public static interface Sort { >HO{gaRM
public void sort(int[] data); Y ::\;s
} XbdoTriE
|9ro&KA
public static void swap(int[] data, int i, int j) { YJ_`[LnL
int temp = data; j|!.K|9B
data = data[j]; JCZ"#8M3
data[j] = temp; &x19]?D"+
} '{WYho!
} 5"xZ'M~=