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。 ~qXwQ@
插入排序: 7%G&=8tq
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package org.rut.util.algorithm.support; `R!2N4|;
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import org.rut.util.algorithm.SortUtil; cQsSJBZ[v5
/** ,@I\'os
* @author treeroot N`qGwNT%G
* @since 2006-2-2 foB&H;A4oC
* @version 1.0 a54S,}|
*/ Sy<io@df
public class InsertSort implements SortUtil.Sort{ zy.v[Y1!
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/* (non-Javadoc) rDu?XJA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y![8-L|Q
*/ $"k1^&&E
public void sort(int[] data) { 6/vMK<Fz9
int temp; Do5{t'm3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6j!a*u:}"
} -y[y.#o
} r"p"UW9og
} C;#gy-
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} P ?96;
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冒泡排序: _d+` Gw
8ZJ6~~h
package org.rut.util.algorithm.support; |!1iLWQ
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import org.rut.util.algorithm.SortUtil; AgB$
w4
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/** Q8]S6,pt
* @author treeroot zy~*~;6tW
* @since 2006-2-2 238z'I+$G/
* @version 1.0 Q8h=2YL
*/ 3M'Y'Szm
public class BubbleSort implements SortUtil.Sort{ Tz7 R:S.
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/* (non-Javadoc) jO`L:D/C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P(3$XMx
*/ ZW
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public void sort(int[] data) { e`)zR'As
int temp; zOJzQZ~
for(int i=0;i for(int j=data.length-1;j>i;j--){ Yi19VU|/
if(data[j] SortUtil.swap(data,j,j-1); |Z$)t%'
} ZJ[p7XP
} #jg3Ku;Y
} s&DAO r!i
} "tj]mij2)G
y@Td]6|f
} gV'=uz v
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选择排序: nzU0=w}V
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package org.rut.util.algorithm.support; :K!L-*>A9
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import org.rut.util.algorithm.SortUtil; `|:` yl
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/** cWI7];/d;
* @author treeroot ,rhNXx
* @since 2006-2-2 msw=x0{n5
* @version 1.0
]_4HtcL4
*/ 0X%#9s~
public class SelectionSort implements SortUtil.Sort { }IKU^0M9<T
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/* mf2Qu
* (non-Javadoc) qc6d,z/
* @~IZ%lEQsD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T`Xz*\}Zb
*/ [kI[qByf
public void sort(int[] data) { q]y{
4"=5
int temp; P>7PO~E.
for (int i = 0; i < data.length; i++) { Q?dzro4C
int lowIndex = i; w X.]O!^X~
for (int j = data.length - 1; j > i; j--) { Sqla+L*
if (data[j] < data[lowIndex]) { q)tNH/
lowIndex = j; a!;K+wL
>
} $u,`bX
} =Unu>p}2V
SortUtil.swap(data,i,lowIndex); PB@jh}
} /? Bu^KX
} Bo/i =/7%
s18A
} (z%OK[
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Shell排序: <ceJ!"L
S2$r 6T
package org.rut.util.algorithm.support; szy2"~hm
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import org.rut.util.algorithm.SortUtil; \}7xgQ>oV
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/** * YTv"
* @author treeroot 7*47mJyc
* @since 2006-2-2 "D
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* @version 1.0 OF`:);
*/ !]#;'
public class ShellSort implements SortUtil.Sort{ 2Vg+Aly4D
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/* (non-Javadoc) IHe?/oUL"b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e41r!od
*/ 8jgamG
public void sort(int[] data) { x c$jG?83#
for(int i=data.length/2;i>2;i/=2){ rF
. Oo 0
for(int j=0;j insertSort(data,j,i); QeD ;GzG
} FdMTc(>
} O4,?C)
insertSort(data,0,1); aX35^K /
} f >\~h,SLL
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/** ]U3@V#*
* @param data =2, iNn
* @param j ef
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* @param i 6?3\P>`3Y
*/ fMRMQR=6B
private void insertSort(int[] data, int start, int inc) { w0fFm"A|W
int temp; stlkt>9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e>$E67h<~
} XE :JL_
} 76EMS?e
} oF(|NS^
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} KoTQc0b!
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快速排序: hxsW9
CYN|
package org.rut.util.algorithm.support; Ea?u5$>gY"
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import org.rut.util.algorithm.SortUtil; 6?KJ"Ai9
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/** <I^Tug\M+
* @author treeroot @#&y
* @since 2006-2-2 {~eVZVv
* @version 1.0 @ykM98K
*/ i@STo7=
public class QuickSort implements SortUtil.Sort{ 8hm|9
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/* (non-Javadoc) ##qs{s^]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^`oyf{w@
*/ wdTjJfr
public void sort(int[] data) { I]Jz[{~1
quickSort(data,0,data.length-1); 53X5&Bwh
} :sXn*k4v
private void quickSort(int[] data,int i,int j){ 1A-ess\
int pivotIndex=(i+j)/2; Kq2,J&Ca3
file://swap (uskVK>L
SortUtil.swap(data,pivotIndex,j); sc
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@b"J FB|
int k=partition(data,i-1,j,data[j]); AH#klYK
SortUtil.swap(data,k,j); lq\/E`fc`
if((k-i)>1) quickSort(data,i,k-1); W=@]YI
if((j-k)>1) quickSort(data,k+1,j); 0*}%v:uN9
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} bClMM
/** *T{P^q.s~[
* @param data 0x]WW|se*
* @param i U<H<
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* @param j %>Y86>mVz
* @return 9py*gN#
*/ ;OynkZs)
private int partition(int[] data, int l, int r,int pivot) { ffqz
:6
do{ c>nXnN
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KZ;Q7 1
SortUtil.swap(data,l,r); P(#by{s
} ^q=D!g
while(l SortUtil.swap(data,l,r); llP
5
return l; uNSbAw3
} ypK1
sw
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} N?mTAF'M
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改进后的快速排序: :L!O/Bd8V
N1O.U"L;
package org.rut.util.algorithm.support; x{';0MkUV
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import org.rut.util.algorithm.SortUtil; bijE]:<AE7
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/** 3j
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* @author treeroot -0/5!
* @since 2006-2-2 <cn{S`
* @version 1.0 xF4>D!T%8
*/ |/R)FT#i
public class ImprovedQuickSort implements SortUtil.Sort { |*+f N8
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private static int MAX_STACK_SIZE=4096; ;/Z9M"!u[
private static int THRESHOLD=10; }(/")i4h
/* (non-Javadoc) N=QeeAI}}m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [o0Z;}fU
*/ Z`=[hu
public void sort(int[] data) { gfPht 5
int[] stack=new int[MAX_STACK_SIZE]; !6UtwCVR
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int top=-1; 3k J8Wn
int pivot; qx $-% P
int pivotIndex,l,r; 61W
ms@D%
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stack[++top]=0; .1[[Y}
stack[++top]=data.length-1; #=G[~m\
0?tn.<'B8T
while(top>0){ 1,tM
int j=stack[top--]; gdu8O!9)
int i=stack[top--]; $:#{Y;d
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pivotIndex=(i+j)/2; UUf-G0/P
pivot=data[pivotIndex]; Y 7a<3>
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SortUtil.swap(data,pivotIndex,j); 4+Sq[Rv0
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file://partition rHir>
p
l=i-1; H WOl79-
r=j; 7g}lg8M
do{ S+mZ.aFS0z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CMm:Vea
SortUtil.swap(data,l,r); \B0,?_i
} P,2FH2Eyj
while(l SortUtil.swap(data,l,r); t(O{IUYM
SortUtil.swap(data,l,j); f__r" N
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if((l-i)>THRESHOLD){ T+O Qa+E@P
stack[++top]=i; 8E m X
stack[++top]=l-1; "Dc6kn^}3
} $c!cO" U
if((j-l)>THRESHOLD){ %6\e_y%
stack[++top]=l+1; BI'}
stack[++top]=j; `uO(#au,U
} IA\CBwiLj
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} T ~9)0A"]
file://new InsertSort().sort(data); S1iF1X(+?X
insertSort(data); nhfHY-l}7
} ZeUA e
/** y~.k-b<{[
* @param data }=1#ANM1
*/ $*035f
private void insertSort(int[] data) { bZ-"R 6a$
int temp; #}/YnVk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?R7>xrp5
} xQ[~ c1
} ZfPWH'P
} U>b mCK2
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} i?.7o*w8
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归并排序: G@YX8!wU
wUGSM"~
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package org.rut.util.algorithm.support; mgIB8D+6
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import org.rut.util.algorithm.SortUtil; j-egsKR
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/** 39xA h*}G]
* @author treeroot U*G8}W
* @since 2006-2-2 BO#XQ,
* @version 1.0 ~i)m(65:
*/ {*gO1TZt9
public class MergeSort implements SortUtil.Sort{ N$8do?
I7b_dJD;*
/* (non-Javadoc) 9] i$`y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K.y2 $b/
*/ C+,JLK
public void sort(int[] data) { =J2\"6BnzA
int[] temp=new int[data.length]; T6gugDQ~.
mergeSort(data,temp,0,data.length-1); }:5_vH0
} Pc+8CuN?
mVJW"*}8
private void mergeSort(int[] data,int[] temp,int l,int r){ DAZzc :1Aj
int mid=(l+r)/2; g_kR5Wxpt
if(l==r) return ; %\5wHT+)
mergeSort(data,temp,l,mid); 3#{{+5G
mergeSort(data,temp,mid+1,r); 83 O+`f
for(int i=l;i<=r;i++){ {u3eel
temp=data; lzJ[ `i.
} _|VWf 8?\
int i1=l; IO,ddVO
int i2=mid+1; v!\\aG/
for(int cur=l;cur<=r;cur++){ <M(Jqb cWa
if(i1==mid+1) { o2pCH
data[cur]=temp[i2++]; AOT +4*)%
else if(i2>r) p$>e{-u
data[cur]=temp[i1++]; _/@VV5Mq
else if(temp[i1] data[cur]=temp[i1++]; F\' ^DtB
else N!7r~B
data[cur]=temp[i2++]; .AEOf0t
} ZG=B'4W
} 'S_kD! BO
wz!a;]agg
} ^tWt"GgC
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改进后的归并排序: K+3dwQo
>C6wm^bl
package org.rut.util.algorithm.support; 0FA
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import org.rut.util.algorithm.SortUtil; ``%uq)G=D
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/** aBo8?VV]8
* @author treeroot ]_cBd)3P}
* @since 2006-2-2 YeN /J.R
* @version 1.0 ttEQgkd`
*/ Z3:M%)e_u$
public class ImprovedMergeSort implements SortUtil.Sort { I6bekOvP
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private static final int THRESHOLD = 10; Irk@#,{<
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/* deD%E-Ja
* (non-Javadoc) r"yA=d'c
* JsNqijVC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F[q:jY
*/ .C]V==z`[4
public void sort(int[] data) { ^P5+ _P
int[] temp=new int[data.length]; jy=dB-&
mergeSort(data,temp,0,data.length-1); rg Q6/3}qc
} A=Au>"nAA
O>zPWVwa
private void mergeSort(int[] data, int[] temp, int l, int r) { I y?_2m
int i, j, k; y[U/5! `zV
int mid = (l + r) / 2; h,|49~^@"
if (l == r) X!+#1NPM
return; vmI2o'zi
if ((mid - l) >= THRESHOLD) h@{U>U7
mergeSort(data, temp, l, mid); s|7(VUPL
else ;>*l?m-S@n
insertSort(data, l, mid - l + 1); OBGA~E;%
if ((r - mid) > THRESHOLD) 3t
mergeSort(data, temp, mid + 1, r); GCN(
else Qt+|s&HGt
insertSort(data, mid + 1, r - mid); ./_o+~\e'
W)3IS&;P
for (i = l; i <= mid; i++) { JCjQR`)
temp = data; ]+1?T)<!
} 6S-1Wc4
for (j = 1; j <= r - mid; j++) { X#l]%IrW!
temp[r - j + 1] = data[j + mid]; T6s~f$G
} 8no_xFA
int a = temp[l]; F_8nxQ-
int b = temp[r]; .#"O VI]#
for (i = l, j = r, k = l; k <= r; k++) { +Eil:Jz
if (a < b) { I]qml2
data[k] = temp[i++]; DNsDEU
a = temp; 4"$K66yk@
} else { >KjyxJ7
data[k] = temp[j--]; %
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b = temp[j]; w7b?ve3-
} \Mk;Y
} 't2dP,u<-
} \3P.G S{l
Da#|}m0>
/** (*63G4Nz\
* @param data "Aw|
7XII
* @param l \;0J6LBc
* @param i ?Ji.bnfK
*/ I(6k.PQ
private void insertSort(int[] data, int start, int len) { !FhK<#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "j+zd&*={
} K`!q1g`
} !^Mk5E (
} I!(.tu6u6c
} #q{i<E 07
Dp:u!tdbeg
堆排序: m5HP56a
EjsAV F
[@
package org.rut.util.algorithm.support; x`'2oz=,F4
,E]u[7A
import org.rut.util.algorithm.SortUtil; Wsb=SM7;
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/** 1tvgM
!.
* @author treeroot c5_?jKpl
* @since 2006-2-2 >G`=8Ku
* @version 1.0 (k?,+jnR
*/ lk $S"OH!
public class HeapSort implements SortUtil.Sort{ A1xY8?#?~c
)A]E:]2
/* (non-Javadoc) 8Z;wF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *G"vV>OSV
*/ tAD{{GW9
public void sort(int[] data) { M[5zn
MaxHeap h=new MaxHeap(); <y${Pkrj
h.init(data); ien >Ou
for(int i=0;i h.remove(); @:$zReS2
System.arraycopy(h.queue,1,data,0,data.length); |CME:;{T
} lf3:Z5*&>
@;>TmLs
private static class MaxHeap{ uVoM2n?D%^
5MJ`B:He+
void init(int[] data){ w7Nb+/,sg
this.queue=new int[data.length+1]; .Z=D|&!
for(int i=0;i queue[++size]=data; sa\v9
fixUp(size); xwxMVp`|o
} ybBLBJb
} XcJ'w
O@U[S.IK
private int size=0;
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J~z;sTR
private int[] queue; 7)zn[4v7qt
]Xcqf9k
public int get() { \m!swYy
return queue[1]; y}jX/Ln
} Va"_.8n|+
M 7j0&>NTG
public void remove() { x;NCW
SortUtil.swap(queue,1,size--); KK-9[S-
fixDown(1); Dx/!^L02
} zR)|%[sWwQ
file://fixdown =~YmM<L
private void fixDown(int k) { $rf4h]&<
int j; dbGW`_zQ4
while ((j = k << 1) <= size) { }?B=R#5
if (j < size %26amp;%26amp; queue[j] j++; \nV|Y=5
if (queue[k]>queue[j]) file://不用交换 t5h]]TOz
break; [ 'pk/h
SortUtil.swap(queue,j,k); X<s']C9c
k = j; kvh}{@|-
} ^.Y"<oZSS
} >LxYP7M
private void fixUp(int k) { }S6Sz&)
while (k > 1) { 2Mx9Kd'a
r
int j = k >> 1; +r)'?zU
if (queue[j]>queue[k]) W(9fCDO;
break; ToIvyeFr
SortUtil.swap(queue,j,k); a
pqzf
k = j; $3](6
} }fw;{&s{z
} GW$(E*4q
ouKID_'
} HxJKS*H;
P[PBoRd2
} >`DbT:/<
]X+3"
SortUtil: 5J1A|qII
b7>^w<ki
package org.rut.util.algorithm; E)|_7x<u
<^VZ4$j
import org.rut.util.algorithm.support.BubbleSort; P8.tl"q
import org.rut.util.algorithm.support.HeapSort; iZ+\vO?|
import org.rut.util.algorithm.support.ImprovedMergeSort; "|pNS)
import org.rut.util.algorithm.support.ImprovedQuickSort; UM%[UyYQ
import org.rut.util.algorithm.support.InsertSort; cOra`7L`
import org.rut.util.algorithm.support.MergeSort; a#W:SgE?Y
import org.rut.util.algorithm.support.QuickSort; wL,b.]
import org.rut.util.algorithm.support.SelectionSort; }*l V
import org.rut.util.algorithm.support.ShellSort; ~I6Er6$C^
>jAr9Blz]
/** ) F 6#n&2
* @author treeroot N m-{$U
* @since 2006-2-2 VY8p[`
* @version 1.0 z^9Yoqog
*/ MJ[#Gq\0R
public class SortUtil { DG1
>T
public final static int INSERT = 1; Xg.'<.!g0
public final static int BUBBLE = 2; /E(H`;DG
public final static int SELECTION = 3; ay#cW.,
public final static int SHELL = 4; RsU=fe,
public final static int QUICK = 5; `pY\Mmgv1
public final static int IMPROVED_QUICK = 6; x Yr-,$/
public final static int MERGE = 7; {e[S?1t=l
public final static int IMPROVED_MERGE = 8; l(9$s4R
public final static int HEAP = 9; cH6ie?KvAo
f&t]O$
public static void sort(int[] data) { ,-A8;DW]^J
sort(data, IMPROVED_QUICK); phSF.WC
} !mK[kXo
private static String[] name={ +NPk9jn
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dC@aQi6{6
}; 9Qp39(l:
O
z%K*
private static Sort[] impl=new Sort[]{ .z+?b8Q\
new InsertSort(), 1&c>v3 $2
new BubbleSort(), 8Q^yh6z
new SelectionSort(), }[Uh4k8P
new ShellSort(), Q^/5hA
new QuickSort(), 8^=g$;g
new ImprovedQuickSort(), `(1em%}
new MergeSort(), !cw<C*
new ImprovedMergeSort(), 0Mt2Rg}
new HeapSort() B{!)GZ(}
}; PRl\W:_t
+O3zeL
public static String toString(int algorithm){ =25qY"Mf
return name[algorithm-1]; ?RvXO'm l
} VE^NSkOa&
_:0<]<x?
public static void sort(int[] data, int algorithm) { }5bh,'
impl[algorithm-1].sort(data); {rGq|Bj
} Vn? %w~0!
?UQVmE&
public static interface Sort { ^4]#Ri=U
public void sort(int[] data); *x[B g]/
} N+l~r]: &
0.O pgv2K
public static void swap(int[] data, int i, int j) { JY0t Hs
int temp = data; P]T(I/\g
data = data[j]; X`]-)(UX
data[j] = temp; G;V@oT
} /dhx +K~
} Pca~V>Hd