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。 0 Swu]OE
插入排序: p*jH5h cy
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package org.rut.util.algorithm.support; akj#.aYk
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import org.rut.util.algorithm.SortUtil; ;Gu(Yoa}y
/** Ut%{pc 7^F
* @author treeroot 4U$M0 =
* @since 2006-2-2 3? k<e
* @version 1.0 "6~+-_:
*/ p;%5 o0{1
public class InsertSort implements SortUtil.Sort{ B&(/,.
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/* (non-Javadoc) 'K23oQwDB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5IgO4 <B
*/ un`4q-S7
public void sort(int[] data) { PTQN.[bBh
int temp; iYW<qgz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?:5/4YC
} nh+h3"-d
} y2B'0l
} G[d]t$f=
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} fn5!Nr ,
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冒泡排序: wgQx.8 h>
L8pKVr
package org.rut.util.algorithm.support; z@<jZM
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import org.rut.util.algorithm.SortUtil; H-%
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/**
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* @author treeroot ^C2SLLgeJ
* @since 2006-2-2 M>*xbBl
* @version 1.0 f?QP(+M5.
*/ FbCuXS=+`
public class BubbleSort implements SortUtil.Sort{ 7a4Z~r27/
*y~~~ 'J/
/* (non-Javadoc) I!Fd~g9I4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jg&f.
*/
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public void sort(int[] data) { RRpCWcIv"
int temp; ?%T]V+40
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;|,*zD
if(data[j] SortUtil.swap(data,j,j-1); K7,Sr1O `
} OP``+z>
} AgOti]`aR
} E,/nK
} S`h yRw
K;R!>p}t
} BWkTQd<t
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选择排序: 8wCB}q C
\XbCJJP
package org.rut.util.algorithm.support; 2FM}"g<8
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import org.rut.util.algorithm.SortUtil; cOdgBi
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/** ]_m(q`_
* @author treeroot AD7&-=p&w
* @since 2006-2-2 DNRWE1P2bg
* @version 1.0 AZ.
j>+0xx
*/ w*7wSP
public class SelectionSort implements SortUtil.Sort { #a 4X*X.8c
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/* 3g3Znb
* (non-Javadoc) p%+'iDb
* N1JM[<PP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cE*d(g
*/ .6pVt_f0/
public void sort(int[] data) { 50Ov>(f@7
int temp; K#x|/b'5d
for (int i = 0; i < data.length; i++) { % 3<7HY]~
int lowIndex = i; m :2A[H+
for (int j = data.length - 1; j > i; j--) { cJ'OqV F
if (data[j] < data[lowIndex]) { 55zy]|F"
lowIndex = j; $g
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} 5M#LO@U
} /Uni6O)oc
SortUtil.swap(data,i,lowIndex); O0sLcuT$
} +EH"A
} ;esOe\zjE
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} 7DWGYvv[
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Shell排序: wB"`lY
2k^'}7G%
package org.rut.util.algorithm.support; 5a5)hmO RB
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import org.rut.util.algorithm.SortUtil; e. R9:
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/** [$z-
* @author treeroot _>4)q=
* @since 2006-2-2 D=}\]Krmay
* @version 1.0 (P-$tHt
*/ )Cd.1X8
public class ShellSort implements SortUtil.Sort{ \%&eDE 0
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/* (non-Javadoc) +9B .}t#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m"wP]OQH*+
*/ <,y> W!
public void sort(int[] data) { Qw<&N$
for(int i=data.length/2;i>2;i/=2){ 9A *gW j
for(int j=0;j insertSort(data,j,i); WJN)<+d
} t$rla_rbY
} 6i%Xf i
insertSort(data,0,1); 9T0g%&
} &_74h);2I:
@4n>I+6*&
/** Q"H/RMo-
* @param data .AZwVP<
* @param j ER0B{b
* @param i "<LWz&e^^
*/ fg4mP_
private void insertSort(int[] data, int start, int inc) { 3cF8DNh
int temp; a4pe wg'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `\f 3Ij,
} Y(R.<LtY
} l z-I[*bA
} tHK>w%|\R
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} mi[8O$^iJ
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快速排序: l>KkAA
GxEShSGOE
package org.rut.util.algorithm.support; 2f620
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import org.rut.util.algorithm.SortUtil; &xUD(
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/** B9Hib1<8
* @author treeroot O8SE)R~
* @since 2006-2-2 !#=3>\np+X
* @version 1.0 2=/-,kOL_
*/ {Wu[e,p
public class QuickSort implements SortUtil.Sort{ 72 |O&`O
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/* (non-Javadoc) 1GK>&;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A+3SLB
*/ =1@LMIi5x
public void sort(int[] data) { PjH'5Y
quickSort(data,0,data.length-1); |0Xf":
} T6QRr}8`/J
private void quickSort(int[] data,int i,int j){ gn&Zt}@[
int pivotIndex=(i+j)/2; _{-[1-lN5_
file://swap }}i'8
SortUtil.swap(data,pivotIndex,j); bzxf*b1I
-J8Hsqf@
int k=partition(data,i-1,j,data[j]); 8QZI(Xe9r
SortUtil.swap(data,k,j); Od)y4nr3~
if((k-i)>1) quickSort(data,i,k-1); lo(C3o'
if((j-k)>1) quickSort(data,k+1,j); "r*`*1
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t
} D>-r `
/** -Ep#q&\
* @param data iER@_?
* @param i v"W*@7<`S
* @param j M/dgW`c
* @return I<ohh`.
*/ yCvtglAJ4
private int partition(int[] data, int l, int r,int pivot) { cw{TS
do{ (D) KU9B>
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YrB-n
SortUtil.swap(data,l,r); Hd\V?#H
} Dzf\m>H[
while(l SortUtil.swap(data,l,r); Rd5_{F
return l; 0hV#]`9`gN
} S`U8\KTi
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} |w}j!}u
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改进后的快速排序: H8FvI"J
o+'|j#P
package org.rut.util.algorithm.support; }!oEjcX'
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import org.rut.util.algorithm.SortUtil; W.MZN4=
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/** \&hq$
* @author treeroot CTRUr"
* @since 2006-2-2 LhbdvJAk@
* @version 1.0 r|u[36NmA
*/ A}(]J!rc
public class ImprovedQuickSort implements SortUtil.Sort {
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private static int MAX_STACK_SIZE=4096; B[GC@]HE
private static int THRESHOLD=10; ~p?ArZb
/* (non-Javadoc) b;UBvwY_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =wdh#{
*/ # dUKG8-HJ
public void sort(int[] data) { *v+l,z4n
int[] stack=new int[MAX_STACK_SIZE]; +ig%_QED[\
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int top=-1; Y:ly x-lj
int pivot; +9b{Y^^~T
int pivotIndex,l,r; id1cZig
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stack[++top]=0; YQG<Q
stack[++top]=data.length-1; U]sAYp^$
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while(top>0){ B-rE8\
int j=stack[top--]; K>$f#^
int i=stack[top--]; b"h'7 C/
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pivotIndex=(i+j)/2; '#'noB;,
pivot=data[pivotIndex]; >pv.,cj
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SortUtil.swap(data,pivotIndex,j); h aAY =:
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file://partition "n%s>@$
l=i-1; X94a
r=j; T}#iXgyx
do{ R
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OEW'bT)
SortUtil.swap(data,l,r); n Nt28n@
} cM#rus?)+
while(l SortUtil.swap(data,l,r); QUrPV[JQ
SortUtil.swap(data,l,j); VfoWPyWD#
V(7,N(
if((l-i)>THRESHOLD){ $YSXE
:
stack[++top]=i; zPby+BP
stack[++top]=l-1; -vvyG
} l(t&<O(m9
if((j-l)>THRESHOLD){ 3!CUJs/W
stack[++top]=l+1; J&xZN8jW
stack[++top]=j; WXQ@kQD
} |mEWN/@C
./YR8 #,
} idI w7hi4
file://new InsertSort().sort(data); b($hp%+yJ
insertSort(data); H1bR+2s
} ]fyfL|(;
/** G@8)3 @
* @param data "=h1gql'
*/ ">H*InF
private void insertSort(int[] data) { {;yO3];Hqw
int temp; qmrT dG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :/5m
D
} E>~R P^?Uz
} >*-%:ub
} 8!_jZ f8
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} ,Z`}!%?
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归并排序: xGd60"w2
_7c3=f83
package org.rut.util.algorithm.support; vX+oZj
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import org.rut.util.algorithm.SortUtil; bZu'5+(@
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/** 1T^WMn:U
* @author treeroot sx,$W3zI'G
* @since 2006-2-2 i<QDV
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* @version 1.0 ]!hjKu"
*/ EGu%;[
public class MergeSort implements SortUtil.Sort{ B,>02EZ
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/* (non-Javadoc) s^kG]7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #:)'D?,
*/ qt8Y3:=8l
public void sort(int[] data) { rj4@
int[] temp=new int[data.length]; )_#V>cvNG
mergeSort(data,temp,0,data.length-1); is.t,&H4P]
} M.}9)ho
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private void mergeSort(int[] data,int[] temp,int l,int r){ !0{SVsc)
int mid=(l+r)/2; GS;GJsAs
if(l==r) return ; 8Km&3nCv$Q
mergeSort(data,temp,l,mid); JPI%{@Qc^
mergeSort(data,temp,mid+1,r); w2LnY1A
for(int i=l;i<=r;i++){ t{k:H4
temp=data; +gl\l?>sr
} h:Pfiw]
int i1=l; *>m[ZJd %=
int i2=mid+1; h+km? j
for(int cur=l;cur<=r;cur++){ +Mj6.X
if(i1==mid+1) %i9S"
data[cur]=temp[i2++]; o/AG9|()4
else if(i2>r) x@#>l8k?
data[cur]=temp[i1++]; u>>|ZPe
else if(temp[i1] data[cur]=temp[i1++]; a%#UF@I
else O8;/oL4 U
data[cur]=temp[i2++]; x^s,<G
} !Dd'*ee-;
} jcCAXk055
( 5LCy?-6
} C[FHqo9M?H
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改进后的归并排序: C4m+Ta%
N* gJu
package org.rut.util.algorithm.support; 6wlLE5
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import org.rut.util.algorithm.SortUtil; Dk
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/** Z`TfS+O6
* @author treeroot %&L13:
* @since 2006-2-2 #|9W9\f,
* @version 1.0 ZU 3Psj
*/ 3kxo1eb
public class ImprovedMergeSort implements SortUtil.Sort { x`6MAZ
l b(
private static final int THRESHOLD = 10; n Bm ]?
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{
/* LL<xygd
* (non-Javadoc) {!Qu(%
* x%dny]O1;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w =GMQ8
*/ s^u Y
public void sort(int[] data) { /k'7j*t Z
int[] temp=new int[data.length]; 7xnj\9$m
mergeSort(data,temp,0,data.length-1); $>)0t@[f
} 9=j9vBV
5kHaZ Q
private void mergeSort(int[] data, int[] temp, int l, int r) { xs= ~N
int i, j, k;
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int mid = (l + r) / 2; Lc!2'Do;
if (l == r) tpWGmjfo>
return; r;Sk[Y5#
if ((mid - l) >= THRESHOLD) OnTe_JML
mergeSort(data, temp, l, mid); }40T'y
else ,`t+X=#
insertSort(data, l, mid - l + 1); 5FOMh"!z\
if ((r - mid) > THRESHOLD) bq/Aopfr
mergeSort(data, temp, mid + 1, r); 3aW<FSgP
else FGDVBUY@
insertSort(data, mid + 1, r - mid); =WTSaC
!q\8`ss
for (i = l; i <= mid; i++) { ]dUG=dWO
temp = data; ACyK#5E
} fo ~uI(rk
for (j = 1; j <= r - mid; j++) { C|ZPnm>f30
temp[r - j + 1] = data[j + mid];
33oW3vS
} 5/"$_7"{a
int a = temp[l]; -8l<5g7
int b = temp[r]; $d*9]M4
for (i = l, j = r, k = l; k <= r; k++) { vT?^#
if (a < b) { <Kt_
oxK,
data[k] = temp[i++]; GD4S/fn3
a = temp; 9@|52dz%
} else { .!3e$mhV
data[k] = temp[j--]; ?Bf>G]zx
b = temp[j]; vhBW1/w&F
} DhE-g<
} n\+c3
} B%tF|KKj
=v:?rY}
/** 4\n
~
* @param data 0GUJc}fgvN
* @param l _/1/{
* @param i Fx^wV^q3
*/ 9L>?N:%5
private void insertSort(int[] data, int start, int len) { M`Q$-#E:
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |0[Buh[_:c
} %0GwO%h},
} iwF_'I$#N
} x0# Bc7y
} BgXZr,?
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堆排序: fOi
Rstci
JK2{9#*
package org.rut.util.algorithm.support; c5^HGIe1
X$!fR >Zc
import org.rut.util.algorithm.SortUtil; h`6 (Oo|
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/** b<tV>d"Fv
* @author treeroot Kg6J:HD49
* @since 2006-2-2 BHr ,jC
* @version 1.0 xeF>"6\
*/ `PARZ|
public class HeapSort implements SortUtil.Sort{ Pxl, "
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/* (non-Javadoc) {.LJ(|(Mz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cM%?Ot,mK"
*/ _%CM<z
e
public void sort(int[] data) { 4
{M
MaxHeap h=new MaxHeap(); JRB6T _U
h.init(data); D W U=qD+
for(int i=0;i h.remove(); /bykIUTKI
System.arraycopy(h.queue,1,data,0,data.length); $+80V{J#
} !
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private static class MaxHeap{ z\eQB%aM
i"V.$|,
void init(int[] data){ h3
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this.queue=new int[data.length+1]; uUjjAGZ
for(int i=0;i queue[++size]=data; OkC.e')Vx
fixUp(size); O\Huj=
} ;Ci:d*
} 43k'96[2d
Nk@-yZ@,8
private int size=0; !\#Wq{p>W*
ku,{NY
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private int[] queue; R([zlw~B5
brTNwRze
public int get() { ~B[e*|d
return queue[1]; f:M^q ;
} .'=S1|_(
|-ZML~2S=h
public void remove() { h2'6W)
SortUtil.swap(queue,1,size--); +Kgl/Wg%
fixDown(1); Vja 4WK*
} ] !*K|?VL
file://fixdown z*T41;b
private void fixDown(int k) { f2c<-}wR
int j; qoZi1,i'
while ((j = k << 1) <= size) { 2Rw<0.i|
if (j < size %26amp;%26amp; queue[j] j++; B!mHO*g
if (queue[k]>queue[j]) file://不用交换 HsYzIQLL
break; BPj?l
SortUtil.swap(queue,j,k); 7KiraKb|
k = j; ; s(bd#Q
} (87wWhH
} IiniaVuQ
private void fixUp(int k) { s 4rva G@a
while (k > 1) { ;#zteqn
int j = k >> 1; W!HjO;
if (queue[j]>queue[k]) Yp(0 XP5o
break; 2@bOy~$A
SortUtil.swap(queue,j,k); ;uAh)|;S#
k = j; }eSy]r[J
} #8XmOJ"W3k
} UA'bE~i
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} *JImP9SE
`ZL^+h<b>M
} l'm|**
k-&<_ghT \
SortUtil: 9Pg6,[*u
.pZYPKMaE
package org.rut.util.algorithm; LS*L XC
[<i3l'V/[
import org.rut.util.algorithm.support.BubbleSort; #rW-jW=A
import org.rut.util.algorithm.support.HeapSort; &p#PYs|H
import org.rut.util.algorithm.support.ImprovedMergeSort; &(<>}
r
import org.rut.util.algorithm.support.ImprovedQuickSort; Wj3i*x$
import org.rut.util.algorithm.support.InsertSort; *b~8`Opa`
import org.rut.util.algorithm.support.MergeSort; pGU.+[|(
import org.rut.util.algorithm.support.QuickSort; )}$rgYKJ
import org.rut.util.algorithm.support.SelectionSort; A ___|
#R
import org.rut.util.algorithm.support.ShellSort; IJ+}
cL .z{
/** r=.@APZB
* @author treeroot >4bw4
Z1
* @since 2006-2-2 /Q9Cvj)"
* @version 1.0 u0)O Fz
*/ O*+HK1q7
public class SortUtil { `dF~'
public final static int INSERT = 1; uUS~"\`fk
public final static int BUBBLE = 2; >l-u{([B
public final static int SELECTION = 3; A/9<} m
public final static int SHELL = 4; Xqe Qj}2kA
public final static int QUICK = 5; }x$@j
public final static int IMPROVED_QUICK = 6; ox<6qW
public final static int MERGE = 7; z( ^?xv
public final static int IMPROVED_MERGE = 8; I`xC0ZUKj
public final static int HEAP = 9; mGg/F&G9
dVq9'{[3
public static void sort(int[] data) { ~ecN4Oo4q;
sort(data, IMPROVED_QUICK); *:\[;69[
} XRM/d5
private static String[] name={ >mCH!ey
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HQF@@
}; fb0)("_V
<Ed; tq
private static Sort[] impl=new Sort[]{ GLub5GrxR
new InsertSort(), N:'GNMu
new BubbleSort(), i.K!;E>
new SelectionSort(), 3P75:v
new ShellSort(), G]xYQ]
new QuickSort(), e|SNb*_
new ImprovedQuickSort(), t?^!OJ:L
new MergeSort(), Q<szH1-
new ImprovedMergeSort(), hX,RuI
new HeapSort() TUGD!b{
}; ]ZR`
6|"VO
4uE)*1
public static String toString(int algorithm){ Y1AZ%{^0a
return name[algorithm-1]; v}5YUM0H `
} g>7i2
@D["#pe,}
public static void sort(int[] data, int algorithm) { rkh%[o9"/
impl[algorithm-1].sort(data); G{|"WaKW
} S+Ia2O)BA
O,+9r_Gh
public static interface Sort { g;q.vHvsc"
public void sort(int[] data); DIP%*b#l$\
} um<$L
[#X}(
public static void swap(int[] data, int i, int j) { U7fNA7#x"
int temp = data; eC 2~&:$L
data = data[j]; -d2)
data[j] = temp; A#Ga!a
} 3ohHBo
} SY.koW