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。 R{NmWj['Mg
插入排序: UtIwrR[
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package org.rut.util.algorithm.support; F6dm_Oq&
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import org.rut.util.algorithm.SortUtil; !sfOde)$
/** Se9I1~mX
* @author treeroot :aV(i.LW
* @since 2006-2-2 $u|p(E:*
* @version 1.0 4Smno%jq
*/ <:-|>R".
public class InsertSort implements SortUtil.Sort{ @2v L'6
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/* (non-Javadoc) J Xo_l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $2A%y14
*/ rtS(iD@B"
public void sort(int[] data) { DM/J,q
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,}2M'DSWa
} x|<rt966A
} >:4}OylhM
} tQ< ou,
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} IVzJ|
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冒泡排序: 9w[7X"#n
68V66:0
package org.rut.util.algorithm.support; [h""AJ~t
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import org.rut.util.algorithm.SortUtil; A-aukJg9
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/** IFlDw}M!9
* @author treeroot 3o9`Ko0
* @since 2006-2-2 %L.,:m tq)
* @version 1.0 )?^0<l#s
*/ (Gf1#,/3~
public class BubbleSort implements SortUtil.Sort{ cF_ Y}C
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/* (non-Javadoc) \|BtgT *$b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'b]GcAL
*/ '*MNRduE6
public void sort(int[] data) { ..UmbJJ.u
int temp; tu#VZAPW@
for(int i=0;i for(int j=data.length-1;j>i;j--){ sn
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if(data[j] SortUtil.swap(data,j,j-1); +v2Fr}
} }_u1'
} &, hhH_W
} rbS67--]
} (s4w0z
}BlVLf%C
} u7ZSs-LuHw
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选择排序: oJK1~;:
ogbLs)&+a
package org.rut.util.algorithm.support; "X4OUk
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import org.rut.util.algorithm.SortUtil; A1Ia9@=Mf
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/** biKom|<nm
* @author treeroot 9F845M
* @since 2006-2-2 ^s\(2lB\F
* @version 1.0 a FjcyD
*/ ?wt%e;
public class SelectionSort implements SortUtil.Sort { @(Wx(3JR?}
@G+Hrd6
/* r"d/9
* (non-Javadoc) [wWip1OR
* P95U{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2>Hl=bX
*/ =hxj B*")
public void sort(int[] data) { .xS3,O_[
int temp; 0%+S@_|
for (int i = 0; i < data.length; i++) { |&eZ[Sy(=l
int lowIndex = i; *&9_+F8ly
for (int j = data.length - 1; j > i; j--) { Gu}|CFL\
if (data[j] < data[lowIndex]) { /.9j$iK#
lowIndex = j;
;)s$Et%
} 3?iRf6;n
} E;.<'t>
SortUtil.swap(data,i,lowIndex); ~KHGh29
} /k qW
} OJPxV~y
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4
} qqA(Swe)T
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Shell排序: }u:@:}8K
|b7v(Hx
package org.rut.util.algorithm.support; _eb:"(m
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import org.rut.util.algorithm.SortUtil; hNgbHzW
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/** :akEl7/&
* @author treeroot xy)Y)yp
* @since 2006-2-2 u&yAMWl
* @version 1.0 43-mv1>.
*/ PeGA+0bm
public class ShellSort implements SortUtil.Sort{ vh 5`R/<3
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/* (non-Javadoc) ~XQj0'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fgIzT!fyz
*/ ^BIB'/Kh)
public void sort(int[] data) { [y-0w.V=oE
for(int i=data.length/2;i>2;i/=2){ Nd'+s>d0
for(int j=0;j insertSort(data,j,i); XdE#l/#
} M}=X/*T
} |TLU
insertSort(data,0,1); O32p8AxEz
} 'Vq
<;.A
@{ *z1{
/** o7 ^t-
L
* @param data "| cNY_$&s
* @param j d
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* @param i FDBj<uXfM|
*/ ts%XjCN[
private void insertSort(int[] data, int start, int inc) { 7s@%LS
int temp; <wWZ]P2]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qp3J/(F
} nt.A X
} &?UIe]
} #$7d1bx
Xu\FcQ{
} rDFDrviW_
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快速排序: is}6cR
T9w;4XF
package org.rut.util.algorithm.support; Qz)1wf'y
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import org.rut.util.algorithm.SortUtil; .|W0B+Z8
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/** >a/]8A
* @author treeroot "[M,PI!B
* @since 2006-2-2 GcN[bH(@
* @version 1.0 lz=$Dz
*/ LA &W@
public class QuickSort implements SortUtil.Sort{ -kFEVJbUyc
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/* (non-Javadoc) M"# >?6{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x&}pM}ea
*/ "2} {lu
public void sort(int[] data) { <%w)EQf4m
quickSort(data,0,data.length-1); qd$Y"~Mco
} eGcc' LBr;
private void quickSort(int[] data,int i,int j){ F]o&m::/K
int pivotIndex=(i+j)/2; K8`Jl=}z%&
file://swap [ u7p:?WDW
SortUtil.swap(data,pivotIndex,j); !SRElb A;i
)y>o;^5'
int k=partition(data,i-1,j,data[j]); xPMTmx?2
SortUtil.swap(data,k,j); -OV:y],-
if((k-i)>1) quickSort(data,i,k-1); mp]}-bR)
if((j-k)>1) quickSort(data,k+1,j); GF4k
Sl,X*[HGd
} Mj&`Y
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/** D>Ij
* @param data 3ht>eaHi
* @param i n^vL9n_N
* @param j fLkZ'~e!
* @return N
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*/ ,@I_b
private int partition(int[] data, int l, int r,int pivot) { B-'oB>|
do{ (=#[om(A
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |NuX9!S
SortUtil.swap(data,l,r); ueI1O/Mi
} ' cM2]<
while(l SortUtil.swap(data,l,r); Nl"Xl?y}
return l; ;MRK*sfw{
} |e{F;8
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} zgre&BV0q
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改进后的快速排序: Cka&b
bu[PQsT
package org.rut.util.algorithm.support; 0zJT_H+
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import org.rut.util.algorithm.SortUtil; :
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/** `zf,$67>1
* @author treeroot +,oEcCi
* @since 2006-2-2 wxC&KrRF
* @version 1.0 n1
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*/ K>%}m,
public class ImprovedQuickSort implements SortUtil.Sort { +5:Dy,F=
4}0DEH.Vx
private static int MAX_STACK_SIZE=4096; U|tUX)9O
private static int THRESHOLD=10; 4#<r}j12z
/* (non-Javadoc) hd+(M[C<9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nE"##2X
*/ %{M_\Ae#
public void sort(int[] data) { IQz"FH?
int[] stack=new int[MAX_STACK_SIZE]; u7PtGN0r%
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int top=-1; Vo1,{"k
int pivot; s?-@8.@
int pivotIndex,l,r; )w.+( v(
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stack[++top]=0; ;/-v4
stack[++top]=data.length-1; {tS^Q*F
"&$ [@c
while(top>0){ y$i^C: N
int j=stack[top--]; 0)<\jo1 F
int i=stack[top--]; WY>r9+A?W
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pivotIndex=(i+j)/2; 18`YY\u(
pivot=data[pivotIndex]; ?E>(zV1D/
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SortUtil.swap(data,pivotIndex,j); 8{0=tOXx{
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file://partition d6(R-k#B
l=i-1; kmNa),`{s
r=j; ^Om0~)"q
do{ \xCI8 *W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uGXN ciEp`
SortUtil.swap(data,l,r); ]o!rK<
} mGZJ$ |
while(l SortUtil.swap(data,l,r); g=ehAg
SortUtil.swap(data,l,j); c#)!-5E~H
11"- taWj
if((l-i)>THRESHOLD){ /#<R
stack[++top]=i; V(gmC%6%l*
stack[++top]=l-1; qu8!fFQjYL
} R_DstpsT
if((j-l)>THRESHOLD){ 9F~e^v]zp
stack[++top]=l+1; 0iKSUwps
stack[++top]=j; Np2I*l6W
} ,Yp+&&p.
u& 4i=K'x8
} vJ
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file://new InsertSort().sort(data); g3V
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insertSort(data); 8-JOfq}s
} ~mSW.jy}=-
/** yT$CImP73
* @param data n'?AZ4&z
*/ j\I{pW-
private void insertSort(int[] data) { =D>,s)}o3;
int temp; QD8.C=2R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Uzi.CYVs%
} ol[sX=5 *
} ul@swp
} ?&gqGU}
cVV @MC
} [TW?sW^0
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归并排序: KF .O>c87&
xM+_rU
M|h
package org.rut.util.algorithm.support; {/)q=
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import org.rut.util.algorithm.SortUtil; k^H&IS!
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/** |>Ld'\i8
* @author treeroot Mzg zOM
* @since 2006-2-2 c 5%uiv]
* @version 1.0 X[SdDYMY
*/ >P<8E2}*
public class MergeSort implements SortUtil.Sort{ 04j]W]8#
=8o$
/* (non-Javadoc) ]\JLlQ}#H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hR4\:s+[
*/ .S_7R/2(?
public void sort(int[] data) { aAbK{=/y_!
int[] temp=new int[data.length]; &g.do?
mergeSort(data,temp,0,data.length-1); cko^_V&x
} ShIJ6LZ
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private void mergeSort(int[] data,int[] temp,int l,int r){ ]Pp}=hcD
int mid=(l+r)/2; p{vGc-zP.
if(l==r) return ; /!i`K{
mergeSort(data,temp,l,mid); w=QlQ\
mergeSort(data,temp,mid+1,r); &E?TR
A# E
for(int i=l;i<=r;i++){ Vr^UEu.w?
temp=data; Vsj1!}X:
} W?:e4:Q
int i1=l; /&i6vWMhP
int i2=mid+1; R/WbcQ)
for(int cur=l;cur<=r;cur++){ Bs3M7zRG
if(i1==mid+1) j&N {j_M
data[cur]=temp[i2++]; QomihQnc
else if(i2>r) : MEB] }
data[cur]=temp[i1++]; /ucS*m:<x
else if(temp[i1] data[cur]=temp[i1++]; #FhgKwx
else mx!EuF$I
data[cur]=temp[i2++]; Dq~\U&U\$
} @ *<`*W
} 'PqKb%B|
M*-]<!))7
} +:_;K_h
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改进后的归并排序: 0'ge}2^
KSYHG
package org.rut.util.algorithm.support; 2CF5qn}T
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import org.rut.util.algorithm.SortUtil; (&KBYiwr
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/** dFl8 'D
* @author treeroot uqsVq0H
* @since 2006-2-2 b[2 #t
* @version 1.0 R*`=Bk0+
*/ W9G1wU
public class ImprovedMergeSort implements SortUtil.Sort { jX;$g>P
4c]=kb GW
private static final int THRESHOLD = 10; 96d&vm~m1
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/* s/0bXM$^
* (non-Javadoc) xFzaVjjP
* ,@]*Xgt=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rU
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*/ 3^,p$D<T:,
public void sort(int[] data) { "!9FJ Y
int[] temp=new int[data.length]; U1)!X@F{
mergeSort(data,temp,0,data.length-1); 0O!A8FA0
} |4j'KM;U
ANRZQpnXQ
private void mergeSort(int[] data, int[] temp, int l, int r) { 6W/uoH=;
int i, j, k; ;w<r/dK
int mid = (l + r) / 2; HoO1_{q"
if (l == r) *AG01# ZF
return; J(Fk@{!F.*
if ((mid - l) >= THRESHOLD) FvXpqlp
mergeSort(data, temp, l, mid); n#S?fsQN
else :I2spBx
insertSort(data, l, mid - l + 1); ) E*-
if ((r - mid) > THRESHOLD) Kw =RqF
mergeSort(data, temp, mid + 1, r); 98Y1-Z^ .
else RDOV+2K
insertSort(data, mid + 1, r - mid); ~hb;kc3
LYke\/ md
for (i = l; i <= mid; i++) { +62}//_?
temp = data; (,R\6
} 0O?\0k;o
for (j = 1; j <= r - mid; j++) { 7po;*?Ox
temp[r - j + 1] = data[j + mid]; N *,[(q
} bHg 0,N
int a = temp[l]; %F87"v~
int b = temp[r]; xQ!
Va
for (i = l, j = r, k = l; k <= r; k++) { IqFmJs|C
if (a < b) { i
2 ='>
data[k] = temp[i++]; k{
$,FQ4
a = temp; 6~O;t'd
} else { f{-,"6Y1
data[k] = temp[j--]; u/apnAW@M
b = temp[j]; ZmvtUma
} a/n~#5-
} (\%J0kR3[
} ~g}blv0q+B
(@NW2
/** c1xX)cF
* @param data }Xb|Ur43
* @param l l%
p4.CX
* @param i +bk+0k9k5
*/ xD9ZL
private void insertSort(int[] data, int start, int len) { 7[1VFc#tf
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QN;GMX5&
} r_MP[]f|0
} +4F; m_G6
}
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} bsc#Oq]
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堆排序: \j4!dOGZ
k)zBw(wr
package org.rut.util.algorithm.support; TVVu_ib
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import org.rut.util.algorithm.SortUtil; 69 J4p=c,
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/** =N2@H5+7
* @author treeroot 1U(!%},
* @since 2006-2-2 cR/e
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* @version 1.0 _6->D[dB
*/ ]}pAZd
public class HeapSort implements SortUtil.Sort{ *,
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/* (non-Javadoc) uT
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AD>/#Ul
*/ 9hgIQl
public void sort(int[] data) { 1[-RIN;U8
MaxHeap h=new MaxHeap(); f[q_eY
h.init(data); gX(8V*os^
for(int i=0;i h.remove(); nv3TxG
System.arraycopy(h.queue,1,data,0,data.length); ?4t~z 1.f
} Ch]q:o4
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private static class MaxHeap{ F.D6O[pZ
}OSf C~5P
void init(int[] data){ ppu<k N
this.queue=new int[data.length+1]; [OFT!=.y &
for(int i=0;i queue[++size]=data; OqX+R4S
fixUp(size); g`,(O
} _zLEHEZ-
} .UU)
9y*(SDF
private int size=0; _I%mY!x\`
#2+hu^Q-
private int[] queue; Xy9'JVV6
7'5/T]Z
public int get() { U+uIuhz
return queue[1]; .:/X~{
} ~]BR(n
:I^4ILQCD
public void remove() { M#yUdl7d
SortUtil.swap(queue,1,size--); <#~n+,
fixDown(1); R%JEx3)0m
} Lve$H(GHT
file://fixdown =|d5V% mK
private void fixDown(int k) { p+2uK|T9
int j; Y'y$k
while ((j = k << 1) <= size) { @"^(} 6
if (j < size %26amp;%26amp; queue[j] j++; Y3xEFqMU
if (queue[k]>queue[j]) file://不用交换 8g/r8u~
break; R!WeSgKCs
SortUtil.swap(queue,j,k); cSj(u%9}
k = j; k,y#|bf,Y
} ">s0B5F7
} kEg~yN
private void fixUp(int k) { !zxq9IhWR
while (k > 1) { R~bLEo
int j = k >> 1; eh*F/Gu
if (queue[j]>queue[k]) ^fM=|.?
break; :$QwOz^N*
SortUtil.swap(queue,j,k); ;8gODj:dO
k = j; QYWl`Yqf
} !Tu.A@
} l`];CALA4
5JZZvc$au
} [ HjGdC
=IIE]<z
} ,=P0rbtK
t;[Q&Jl
SortUtil: +>v{#A_u
87nsWBe
package org.rut.util.algorithm; U7G|4(
Vb2")+*:
import org.rut.util.algorithm.support.BubbleSort; *c@]c~hY,
import org.rut.util.algorithm.support.HeapSort; &J=x[{R
import org.rut.util.algorithm.support.ImprovedMergeSort; S*rc XG6Q^
import org.rut.util.algorithm.support.ImprovedQuickSort; t*Wxvoxk
import org.rut.util.algorithm.support.InsertSort; gOk^("@
import org.rut.util.algorithm.support.MergeSort; n6*;
~h5
import org.rut.util.algorithm.support.QuickSort; q5w)i
import org.rut.util.algorithm.support.SelectionSort; /h@rLJ)o>
import org.rut.util.algorithm.support.ShellSort; @HXXhYH
%;G!gJeE
/** yNQ 9~P2
* @author treeroot N?Ss/by8Sg
* @since 2006-2-2 {K2F(kz?T
* @version 1.0 " 2@Ys*e
*/ \y/+H
public class SortUtil { JDC,]
public final static int INSERT = 1; 5TdI
public final static int BUBBLE = 2; wT\dzp>/
public final static int SELECTION = 3; F^');8~L
public final static int SHELL = 4; @yjui
public final static int QUICK = 5; ;Y16I#?;Kh
public final static int IMPROVED_QUICK = 6; II_MY#0X
public final static int MERGE = 7; Ia)^
public final static int IMPROVED_MERGE = 8; *$>$O%
public final static int HEAP = 9; k?=V?JWY
Iyvl6
public static void sort(int[] data) { SHPZXJ{
sort(data, IMPROVED_QUICK); ?r~](l
} ]9pcDZB
private static String[] name={ k4nA+k<WI`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #kGxX@0
}; 8%9OB5?F6
|zL .PS
private static Sort[] impl=new Sort[]{ Xq%!(YD|
new InsertSort(), 5(OF~mX#
new BubbleSort(), ~
.Eln+N
new SelectionSort(), |m7`:~ow
new ShellSort(), :hxZ2O?5_
new QuickSort(), ,K[B/tD{j
new ImprovedQuickSort(), }~5xlg$B<<
new MergeSort(), K#{E87G(
new ImprovedMergeSort(), %x7l`.)N
new HeapSort() 8JAT2a61ur
}; l@YpgyqaL
#$%gs]
public static String toString(int algorithm){ 9/|i.2&
return name[algorithm-1]; #Ryu`b
} J XnPKAN
c5rQkDW
public static void sort(int[] data, int algorithm) { IA;KEGJ
impl[algorithm-1].sort(data); mwTn}h3N
} ]QU52R@M
Onoi6^G
public static interface Sort { ^q$vyY
public void sort(int[] data); K+mtuB]yr
} V1;Qt-i
,K6]Q|U@r
public static void swap(int[] data, int i, int j) { {1YT a:evl
int temp = data; 0?t!tugG
data = data[j]; @w:sNXz-
data[j] = temp; ;h3*MR
} &f qmO>M
} :<IW'