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。 RO3e
插入排序: . eag84_
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package org.rut.util.algorithm.support; ,["|wqM
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import org.rut.util.algorithm.SortUtil; 'N,NG$G2
/** {4jSj0W
* @author treeroot {c
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* @since 2006-2-2 %m\G'hY2
* @version 1.0 ^VYZ%
*/ 9C'+~<l
public class InsertSort implements SortUtil.Sort{ Ue\oIi
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/* (non-Javadoc) `r0
qn'*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n7!Lwq2
*/ lJQl$Wx^
public void sort(int[] data) { X|lmH{kf
int temp; \U =>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X%\6V;zR#
} B46H@]d#7K
} uXW.
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} ghd[G}
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} K.L+;
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冒泡排序: ump:dL5{
?;7>`F6ld
package org.rut.util.algorithm.support; f7AJSHe
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import org.rut.util.algorithm.SortUtil; &IPK5o,
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/** k)t8J \
* @author treeroot FHPZQC8
* @since 2006-2-2 M]zNW{Xt
* @version 1.0 qf&{O:,Z
*/ <yaw9k+P
public class BubbleSort implements SortUtil.Sort{ <y/AEY1
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/* (non-Javadoc) ZaV66Y>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !_z>w6uR
*/ FJH8O7
public void sort(int[] data) { c] 9CN
int temp; Gkvd{G?F
for(int i=0;i for(int j=data.length-1;j>i;j--){ >-WOw
if(data[j] SortUtil.swap(data,j,j-1); >l*9DaZ
} eeR@p$4i
} e$|)wOwU
} fe`G^hV
} .Eyk?"^
HSFf&|qqx
} $>37PVVW
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选择排序: EF{'J8AQ
<g1hdF0
package org.rut.util.algorithm.support; 7027@M?A?
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import org.rut.util.algorithm.SortUtil; ~g|0uO}.
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/** &=O1Qg=K
* @author treeroot P[K
T
* @since 2006-2-2 tce8*:rNH
* @version 1.0 "r3s'\
*/ 7n]%`Yb
public class SelectionSort implements SortUtil.Sort { \(t>(4s_~
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/* W%QtJB1)
* (non-Javadoc) ~TIZumGB
* 4^9_E&Fa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yp'>+cLa
*/ AQU: 0
public void sort(int[] data) { "lb!m9F{
int temp; {/!"}{G1e
for (int i = 0; i < data.length; i++) { ]Y!
Vyn
int lowIndex = i; ExU|EN-
for (int j = data.length - 1; j > i; j--) { 8ngf(#_{_n
if (data[j] < data[lowIndex]) { m*,[1oeG&
lowIndex = j; 4?uG> ;V
} y{P9k8v!z
} YhR"_
SortUtil.swap(data,i,lowIndex); 6MQ:C'8T&=
} hvZR4|k>
} HaUo+,=
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} n:] 1^wX#
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Shell排序: rs+37
IcA~f@
package org.rut.util.algorithm.support; eZ$1|Sj]j
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import org.rut.util.algorithm.SortUtil; \,t<{p_Q
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/**
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* @author treeroot /a)=B)NH
* @since 2006-2-2 ay[*b_f
* @version 1.0 Vtk|WV?>P+
*/ bUL9*{>G
public class ShellSort implements SortUtil.Sort{ ' "
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/* (non-Javadoc) vH8%a8V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]iX$p~riH
*/ Rj=Om
public void sort(int[] data) { _@76eZd
for(int i=data.length/2;i>2;i/=2){ j)*nE./3
for(int j=0;j insertSort(data,j,i); 5nb6k,+E
} 6[7k}9`alz
} IQv>{h}
insertSort(data,0,1); F'*4:WD7
} - mXr6R?
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/** VHNiTp
* @param data }Cf[nGh|B
* @param j M lwQ_5O
* @param i !-~(*tn
*/ [GM<Wt0
private void insertSort(int[] data, int start, int inc) { ^q2zqC
int temp; ywte\}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZeV)/g,w
} v21?
} S45_-aE
} Ba~Iy2\x
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o
} s50ln&2
}C}_
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快速排序: UlytxWkUX
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package org.rut.util.algorithm.support; `;@4f|N9
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import org.rut.util.algorithm.SortUtil; JnJz{(c
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/** ="K>yUfcFl
* @author treeroot ObzlZP
r@
* @since 2006-2-2 ry"zec
B
* @version 1.0 (7,Awf5D~
*/ wYG0*!Vj
public class QuickSort implements SortUtil.Sort{ \>k+Oyj
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/* (non-Javadoc) c
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "dTXT
*/ ~yN,F pD
public void sort(int[] data) { yjzNU5F
quickSort(data,0,data.length-1); Xi.?9J`@
} 2O/_hv.
private void quickSort(int[] data,int i,int j){ 3s2M$3r)6
int pivotIndex=(i+j)/2; ,pzCJ@5
file://swap *Cw2 h
SortUtil.swap(data,pivotIndex,j); SGm?"esEt
9_{!nQC.g
int k=partition(data,i-1,j,data[j]); [DwB7l)O(
SortUtil.swap(data,k,j); g (k|"g`*
if((k-i)>1) quickSort(data,i,k-1); #J_i 5KmXJ
if((j-k)>1) quickSort(data,k+1,j); ^EOjq
-&}E:zoe
} OFv} jT
/** 566Qikw2
* @param data ) /'s&
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* @param i ^cm^JyS)
* @param j ri
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* @return IIkJ"Qg.
*/ f'dI"o&^/d
private int partition(int[] data, int l, int r,int pivot) { Km7
do{ $(U|JR@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wn&2-m*a
SortUtil.swap(data,l,r); mZyTo/\0
} wQT'~'kL
while(l SortUtil.swap(data,l,r); 6*7&X#gG
return l; _L":Wux
} bSfQH4F
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} 6tguy
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改进后的快速排序: R8l9i2
xJCpWU3wM
package org.rut.util.algorithm.support; xTT>3Fj
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import org.rut.util.algorithm.SortUtil; s? Kn,6Y
UZ#2*PH2E
/** >YLm]7v}
* @author treeroot v&n&i?
* @since 2006-2-2 g%trGW3{-
* @version 1.0 3QpTO,
*/ Sls>
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public class ImprovedQuickSort implements SortUtil.Sort { /Ny&;Y
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private static int MAX_STACK_SIZE=4096; e=2D^G#qE
private static int THRESHOLD=10; F*f)Dv$p
/* (non-Javadoc) ]_s]Q_+E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LxT ]-
*/ YVT^}7#
public void sort(int[] data) { DZue.or
int[] stack=new int[MAX_STACK_SIZE]; s><co]
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int top=-1; JFZ p^{
int pivot; P*>V6SK>b
int pivotIndex,l,r; ioggD
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p+q
stack[++top]=0; #82B`y<<y/
stack[++top]=data.length-1; hlRE\YO&8R
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while(top>0){ q)*0G*
int j=stack[top--]; !r<7]nwV
int i=stack[top--]; ]NCOi?Odx
iwbjjQPr
pivotIndex=(i+j)/2; 4tI~d8?pk+
pivot=data[pivotIndex]; gA6C(##0
,P}c92;
SortUtil.swap(data,pivotIndex,j); a;K:~R+@,
o&]qjFo\m
file://partition e\<I:7%Rg
l=i-1; 5j]%@]M$Z
r=j; nFqMS|EN
do{
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); iaB5t<t1r
SortUtil.swap(data,l,r); bm;4NA?Gg
} _3hEYeh
while(l SortUtil.swap(data,l,r); ?U |lZ~o
SortUtil.swap(data,l,j); )Ii=8etdv
hXCDlCO
if((l-i)>THRESHOLD){ =["GnL*!0
stack[++top]=i; !>Xx</iD1
stack[++top]=l-1; Wh,kJis<
} WCH>9Z>cj
if((j-l)>THRESHOLD){ 4T:ZEvdzf
stack[++top]=l+1; LE;c+(CAU
stack[++top]=j; %X3T<3<
} 5J,vH[E
"k.<" pf
} rZLMYM
file://new InsertSort().sort(data); !Ej<J&e
insertSort(data); FW2} 9#R
} i|t$sBIh
/** \?j(U8mB>
* @param data ;.iy{&$
*/ %lBFj/B
private void insertSort(int[] data) { [Y[|:_+5
int temp; N67m=wRx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); COap*
} aa|xZ
} b{A#P?
} <*L8kNykK
o\N),;LM
} Af;$}P
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归并排序: mz47lv1?
j:0z/gHp$
package org.rut.util.algorithm.support; `W5f'RU
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import org.rut.util.algorithm.SortUtil; jN'zNOV~
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/** 7>#74oy
* @author treeroot |g~.]2az
* @since 2006-2-2 .mMM]*e[0
* @version 1.0 Ta_#Rg*!
*/ )Ipa5i>t
public class MergeSort implements SortUtil.Sort{ SO|$X
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/* (non-Javadoc) O%OeYO69
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V[#jrwhA
*/ 0y?bwxkc
public void sort(int[] data) { zFlW\wc
int[] temp=new int[data.length]; LVX.s tN#p
mergeSort(data,temp,0,data.length-1); .RdnJ&K*
} \]zHM.E1
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8/k*"^3
int mid=(l+r)/2; bO9X;}\6
if(l==r) return ; U2;_{n*g%
mergeSort(data,temp,l,mid); {D$+~lO
mergeSort(data,temp,mid+1,r); Bx)4BPaN
for(int i=l;i<=r;i++){ nBR4j?':i
temp=data; F&^u1RYz
} +d<o2n4!
int i1=l; G#UO>i0jy
int i2=mid+1; i6aM}p<
for(int cur=l;cur<=r;cur++){ i!(u4wTFF
if(i1==mid+1) `$05+UU
data[cur]=temp[i2++]; T< D&%)
else if(i2>r) nwf(`=TC
data[cur]=temp[i1++]; b:2#3;)
else if(temp[i1] data[cur]=temp[i1++]; ,VI2dNst\
else |Y4c+6@_
data[cur]=temp[i2++]; p[>!;qI
} f]Xh7m(Gh
} rytves%;C
0tK(:9S
} m9 1Gc?c
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改进后的归并排序: ]De<'x}
1N,</<"
package org.rut.util.algorithm.support; qx|~H'UuBN
\(C6|-:GY
import org.rut.util.algorithm.SortUtil; UyENzK<%u
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/** &sJ -&7YZ
* @author treeroot \8g'v@$wG
* @since 2006-2-2 VX0}x+LJ
* @version 1.0 L xP%o
*/ Y'*oW+K
public class ImprovedMergeSort implements SortUtil.Sort { &.F]-1RN[
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private static final int THRESHOLD = 10; H}?"2jF
id+ ~ V
/* ?k@^U9?R
* (non-Javadoc) Ir#]p9:x
* F$M^}vsjGx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pLSh
+*F
*/ FJCs$0
public void sort(int[] data) { 7H.3.j(L
int[] temp=new int[data.length]; ? fW['%
mergeSort(data,temp,0,data.length-1); e>0gE`8A
} DaP,3>M
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private void mergeSort(int[] data, int[] temp, int l, int r) { *O_>3Hgl
int i, j, k; >jz9o9?8
int mid = (l + r) / 2; xu\s2x$
if (l == r) w$iQ,--
return; R#HVrzOO|T
if ((mid - l) >= THRESHOLD) ^p)#;$6b
mergeSort(data, temp, l, mid); 8wV`mdKN
else FRa>cf4
insertSort(data, l, mid - l + 1); B`|f"+.
if ((r - mid) > THRESHOLD) |P@N}P@
mergeSort(data, temp, mid + 1, r); $7" Y/9Y
else 6%it`A8}
insertSort(data, mid + 1, r - mid); :CLWmMC_
bbM^J
for (i = l; i <= mid; i++) { dIW@L
temp = data; rU+3~|m
} MX? *jYl
for (j = 1; j <= r - mid; j++) { ?8N^jjG
temp[r - j + 1] = data[j + mid]; SSxp!E'
} ,BUrZA2\U$
int a = temp[l]; 1oe,>\\
int b = temp[r]; >dx/k)~~-L
for (i = l, j = r, k = l; k <= r; k++) { `*6|2
if (a < b) { [;H-HpBaa
data[k] = temp[i++]; kMJ}sS
a = temp; $GP66Ev
} else { 60;_^v
data[k] = temp[j--]; eSQkW
b = temp[j]; d~ +(g!
} _B>'07D0
} ^"<x4e9+j
} 'Lq+ONX5
& .0A%
/** {0~\ T[qm
* @param data )(0if0D4
* @param l Ge_fU'F
* @param i DQ(0:r
*/ yDfH`]i)U
private void insertSort(int[] data, int start, int len) { /poGhB1k
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); elAWQE us
} }4N'as/ZO
} 8OKG@hc
} qg{gCG
} 7HkFDI()1
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堆排序: /{f"0]-RA
Qo)Da}uo20
package org.rut.util.algorithm.support; &Ts!#OcB,
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import org.rut.util.algorithm.SortUtil; GF6 o
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/** "I66@d?
* @author treeroot ~P#mvQE)
* @since 2006-2-2 0N^+d,Xt.
* @version 1.0 ltfKqY-
*/ <3!Al,!ej@
public class HeapSort implements SortUtil.Sort{ .u>[m.
D%~tU70a
/* (non-Javadoc) iLch3[p%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m^!:n$
*/ o2X95NiH
public void sort(int[] data) { :`e#I/,
MaxHeap h=new MaxHeap();
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h.init(data); 5mQ@&E~#W
for(int i=0;i h.remove(); 2HtsSS#0Q
System.arraycopy(h.queue,1,data,0,data.length); KF
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} +@=V}IO
yAfwQ$Ll7
private static class MaxHeap{ q[_qZ
yfK}1mx)j
void init(int[] data){ VxBBZsZO~
this.queue=new int[data.length+1]; ;+<IWDo
for(int i=0;i queue[++size]=data; }%p:Xv@X!
fixUp(size); I%u 2 ce
} -Y@tx fu-
} 9Q=VRH:
@oE
5JM
private int size=0;
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RI@\cJ\}
private int[] queue; T/\RViG3
y QClq{A
public int get() { x>}ml\R
return queue[1]; "aOs#4N
} RqgN<&g?
U xBd14-R_
public void remove() { kzKej"a;
SortUtil.swap(queue,1,size--); 2uOYuM[7gH
fixDown(1); (oi:lC@h*
} h{gFqkDoTI
file://fixdown `wXK&R<`
private void fixDown(int k) { ]:OrGD"
int j; B~w$j/sWU
while ((j = k << 1) <= size) { ,U3
if (j < size %26amp;%26amp; queue[j] j++; N$6e KJ]
if (queue[k]>queue[j]) file://不用交换 I)rO|
break; ;.V/ngaj
SortUtil.swap(queue,j,k); .JPN ';
k = j; x=t(#R m
} 3Do0?~n
} >x{("``D0y
private void fixUp(int k) { )GkJ%o#H2
while (k > 1) { 6@s!J8!
int j = k >> 1; f^FFn32u
if (queue[j]>queue[k]) 7pm'b,J<
break; r }lGcG)
SortUtil.swap(queue,j,k); N[po)}hp
k = j; ?qNU*d
} d.FU))lmD
} x="Wqcnj{
B+K6(^j,,y
} Q,[G?vbj
-B;#pTG
} SLKplLO
O;H6`JQ
SortUtil: j{%;n40$
%rylmioW>
package org.rut.util.algorithm; V4+|D2
#RBrii-,
import org.rut.util.algorithm.support.BubbleSort; ;=y"Z^
import org.rut.util.algorithm.support.HeapSort; :j]1wp+
import org.rut.util.algorithm.support.ImprovedMergeSort; E`.xu>Yyj
import org.rut.util.algorithm.support.ImprovedQuickSort; s*k)h,\
import org.rut.util.algorithm.support.InsertSort; j6GIB_
import org.rut.util.algorithm.support.MergeSort; a_RY Yj
import org.rut.util.algorithm.support.QuickSort; |}z)>E
import org.rut.util.algorithm.support.SelectionSort; )A\
ZS<@Z7
import org.rut.util.algorithm.support.ShellSort; wXKtQ#o}
hq
3n&/
/** Nap[=[rv
* @author treeroot vN Bg&m
* @since 2006-2-2 |NuMDVd+s
* @version 1.0 ~[HzGm%
*/ CRK%^3g
public class SortUtil { ;Z]Wj9iY
public final static int INSERT = 1; ij
?7MP
public final static int BUBBLE = 2; 'XK 'T\m
public final static int SELECTION = 3; yp#!$+a}
public final static int SHELL = 4; PMfW;%I.
public final static int QUICK = 5; 4yyw:"
public final static int IMPROVED_QUICK = 6; JT?u[pQ^
public final static int MERGE = 7; d=D-s
public final static int IMPROVED_MERGE = 8; k,:W]KD
public final static int HEAP = 9; )2&3D"V
tm+*ik=x|
public static void sort(int[] data) { pey=zR!
sort(data, IMPROVED_QUICK); h}
`v0E
} l=E86"m
private static String[] name={ A7%d
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lU{)%4e`
}; n 9B5D:.G
+V4)><
private static Sort[] impl=new Sort[]{ #*o0n>O
new InsertSort(), QTy=VLk43
new BubbleSort(), <T}^:2G|
new SelectionSort(), WC#6(H5t$
new ShellSort(), Y4rxnXGw
new QuickSort(), vGkemJ^/
new ImprovedQuickSort(), w:5?ofC
new MergeSort(), aJ'Fn
new ImprovedMergeSort(), 32wtN8kx
new HeapSort() #AJW-+1g.=
}; =I# pXL
YnEyL2SuU
public static String toString(int algorithm){ 'H530Y\
return name[algorithm-1]; |0n )U(
} 6
9>@0P
g(@F`W[
public static void sort(int[] data, int algorithm) { h.edb6
impl[algorithm-1].sort(data); TTXF
r
} w?ugZYwX*
NM{)liP
;8
public static interface Sort { _4by3?<c
public void sort(int[] data); J :O!4gI
} cYA:k
e$[O J<t
public static void swap(int[] data, int i, int j) { S2$66xr#
int temp = data; {KG}m'lx
data = data[j]; +F)EGB%LXs
data[j] = temp; GW AT0
} Ui'v'
$
} t]h_w7!U