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。 ]sZ!
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插入排序: W <u,S
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package org.rut.util.algorithm.support; fM`.v+
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import org.rut.util.algorithm.SortUtil; -pW*6??+?
/** Q<>b3X>O
* @author treeroot 5tl($j
* @since 2006-2-2 Q 6n!u;
* @version 1.0 3I G<Ot9
*/ fj97_Q=
public class InsertSort implements SortUtil.Sort{ 1) Nj.#)
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/* (non-Javadoc) Zo<j"FG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hQ (84u
*/ '81c>qA
public void sort(int[] data) { SS6K7
int temp; k`w/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); GK=b
} Xp[x O 0
} ,lcSJ^yr
} Y?ZzFd,i&
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} l5/gM[0_7
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冒泡排序: C}qHvwFm
mXs.@u/
package org.rut.util.algorithm.support; IU;a$
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import org.rut.util.algorithm.SortUtil; G|YNShK4=9
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/** G!+Mu2
* @author treeroot GfV#^qi
* @since 2006-2-2 .(99f#2M:
* @version 1.0 &y&HxV
*/ r+k g$+%b
public class BubbleSort implements SortUtil.Sort{ #$
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sa TS8p z
/* (non-Javadoc) 14DhJUV"b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c~+KrWbZ~
*/ 2ck0k,WP
public void sort(int[] data) { Ab6R ?mUM
int temp; 2ZEDyQM
for(int i=0;i for(int j=data.length-1;j>i;j--){ i1ScXKO
if(data[j] SortUtil.swap(data,j,j-1); [1nUq!uTm
} GOOm] ]I
} {y'4&vt<~
} *-*SCA`E^=
} [RF 6mWQ
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} !t+ 3DMPn
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选择排序: Lg~ll$
U
O-huC:zZh
package org.rut.util.algorithm.support; m}7Nu
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import org.rut.util.algorithm.SortUtil; /0o#V-E)
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/** XZ@|(_Z
* @author treeroot GT<!e]=6
* @since 2006-2-2 /;kSa}"Q
* @version 1.0 k{H7+;_
*/ z'7XGO'Lo
public class SelectionSort implements SortUtil.Sort { ~1{ppc+
E\ls- (,
/* 3m| C8:
* (non-Javadoc) gD2P)7:
* VeSQq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '50}QY_R.
*/ ,q;?zcC7
public void sort(int[] data) { I1Otu~%d
int temp; yfal'DqKF
for (int i = 0; i < data.length; i++) { B77`azwF
int lowIndex = i;
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for (int j = data.length - 1; j > i; j--) { D^gS.X ^
if (data[j] < data[lowIndex]) { [X91nUz#
lowIndex = j; _N=f&~T
} Nv^byWqu
} &%%ix#iF
SortUtil.swap(data,i,lowIndex); 5YneoM]Q
} H'JU5nE
} PW82
Vp.
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} !6x7^E;c
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Shell排序: 9VanR
::XX
:yRv:`r3Lt
package org.rut.util.algorithm.support; 2$ &B@\WY
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import org.rut.util.algorithm.SortUtil; 3=yfbO<-
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/** k?$I4&|5Nt
* @author treeroot Cv}^]_`Q
* @since 2006-2-2 YN+vk}8 <
* @version 1.0 a{@}vZx>3
*/ |B^Mj57DO
public class ShellSort implements SortUtil.Sort{ g+5c"Yk+u~
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/* (non-Javadoc) C}(@cn `L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y%eq2%
*/ Vn_~ |-Wt
public void sort(int[] data) { ~d].<Be
for(int i=data.length/2;i>2;i/=2){ i(_A;TT6
for(int j=0;j insertSort(data,j,i); 8NiR3*1
} uovv">Uw
} [h8s0
insertSort(data,0,1); %~y>9K
} 4"_`Mu_%
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/** zgH(/@P
* @param data 3%hq<
* @param j :PtZKt;~X
* @param i ~USt&?
*/ 8XG';K_
private void insertSort(int[] data, int start, int inc) { .r2*tB).
int temp; Q@7d:v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Bp3E)l
} <N1wET-
} JXM]tV
} uKd4+Km
DY9]$h*y
} OZ+v ~'oD
vbVOWX6
快速排序: #c5jCy}n
Pc_aEBq
package org.rut.util.algorithm.support; D}q"^"#T
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import org.rut.util.algorithm.SortUtil; _'LZf=V0
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/** /("7*W 2
* @author treeroot BHf$ %?3z,
* @since 2006-2-2 d&[RfZ`
* @version 1.0 MUAs(M;
*/ ,wwO0,"y7
public class QuickSort implements SortUtil.Sort{ IHYLM;@L
dH!z<~
/* (non-Javadoc) BBRL_6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jjm#ofv
*/ s4~[GO6>
public void sort(int[] data) { }!AS?
quickSort(data,0,data.length-1); 5,pNqXRp
} l6y}>]
private void quickSort(int[] data,int i,int j){ W3:Fw6v
int pivotIndex=(i+j)/2; nuXL{tg6
file://swap =o~GLbsER
SortUtil.swap(data,pivotIndex,j); sVK?sBs]
o`,~#P|
int k=partition(data,i-1,j,data[j]); IQRuqp KL
SortUtil.swap(data,k,j); B*,)@h
if((k-i)>1) quickSort(data,i,k-1); lI 4tW=
if((j-k)>1) quickSort(data,k+1,j); 2S{P(B
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}
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/** Ic9L@2m
* @param data =c'4rJ$+
* @param i kIVQ2hmv
* @param j {d'-1z"q
* @return pA~}_
*/ EUi 70h+
private int partition(int[] data, int l, int r,int pivot) { yQE'!m
do{ E4L?4>V@\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]7O<|8n!d
SortUtil.swap(data,l,r); W&IG,7tr
} ?: yz/9(
while(l SortUtil.swap(data,l,r); du66a+@t
return l; x}yl Rg`[
} IHni1
wQSye*ec
} } #rTUX
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改进后的快速排序: )1uiY
f&k
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package org.rut.util.algorithm.support; c]PTU2BB8
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import org.rut.util.algorithm.SortUtil; @kWL "yy,
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/** }l|S]m!
* @author treeroot 6OAs%QZ
* @since 2006-2-2 #$I@V4O;#
* @version 1.0 D\AVZ76F1
*/ Uj):}xgi'
public class ImprovedQuickSort implements SortUtil.Sort { l1)~WqhE}
X0VSa{
private static int MAX_STACK_SIZE=4096; mdWA5p(
private static int THRESHOLD=10; V4n~Z+k
/* (non-Javadoc) GtVT^u_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H#~gx_^U
*/ ,~1'L6Ri?
public void sort(int[] data) { L"qJZU
int[] stack=new int[MAX_STACK_SIZE]; dU$VRgP/
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int top=-1; 5#,H&ui\
int pivot; ^#HaH
int pivotIndex,l,r; #ES[),+|mB
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stack[++top]=0; 68Fl/
stack[++top]=data.length-1; j
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while(top>0){ cZYy+
int j=stack[top--]; \Ii{sn9
int i=stack[top--]; n#lbfN 4
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pivotIndex=(i+j)/2; )G/bP!^+(
pivot=data[pivotIndex]; xB
*b7-a
#ibwD:{
SortUtil.swap(data,pivotIndex,j); fp)SZu_*
g2vm]j
file://partition 2n:<F9^"
l=i-1; x]{P.7IO'
r=j; Vu:ZG*^
do{ [';o -c"!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hdPGqJE
SortUtil.swap(data,l,r); sbW+vc
} !8H0.u
rw
while(l SortUtil.swap(data,l,r); o,*m,Qc
SortUtil.swap(data,l,j); uUI#^ A
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if((l-i)>THRESHOLD){ )A8#cY!<
stack[++top]=i; uNN/o}Qx
stack[++top]=l-1; >jW**F
} x?Abk
if((j-l)>THRESHOLD){ y, l[v39
stack[++top]=l+1; n-Iz!;q
stack[++top]=j; >Xn,jMUW
} D+]mKPB
I-]G{
} ]9oj,k
file://new InsertSort().sort(data); -9b=-K.y
insertSort(data); 1bFZyD"
} \p4*Q}t
/** cNWmaCLN$
* @param data $*C
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*/ d@Z DIy
private void insertSort(int[] data) { h4hAzFQ.s
int temp; ?"yjgt7+y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !j6k]BgZ
} s41%A2Enh
} <Wn~s=
} suN6(p(.
9xQ|Uad+%
} e>MtDJ5
2{ F-@}=
归并排序: uw+nll*W%
>z<L 60S
package org.rut.util.algorithm.support; Xf4Q Lw/r
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import org.rut.util.algorithm.SortUtil; 5U2%X
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/** k79OMf<v
* @author treeroot
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* @since 2006-2-2 56pj(}eq
* @version 1.0 )I%M]K]F
*/ + ~V%R{h
public class MergeSort implements SortUtil.Sort{ #Pd9i5~N
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B
/* (non-Javadoc) f#s 6 'g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )z7CT|h7S
*/ &lzY"Y*hA0
public void sort(int[] data) { [G_ ;78
int[] temp=new int[data.length]; !X}+JeU'
mergeSort(data,temp,0,data.length-1); MT{1/A;`)
}
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1I2ndt
private void mergeSort(int[] data,int[] temp,int l,int r){ +L 09^I
int mid=(l+r)/2; Ftyxz&-4$p
if(l==r) return ; ozOc6
mergeSort(data,temp,l,mid); so` \e^d
mergeSort(data,temp,mid+1,r); (Yy#:r;U
for(int i=l;i<=r;i++){ qsj$u-xhX
temp=data; dpW`e>o
} upMs yLp(
int i1=l; ]-wyZ +a
int i2=mid+1; )u(,.O[cw
for(int cur=l;cur<=r;cur++){ (Aw@}!
if(i1==mid+1) \; XJ$~>
data[cur]=temp[i2++]; nAQ[
-NbW,
else if(i2>r) c44s@E
data[cur]=temp[i1++]; o "r
else if(temp[i1] data[cur]=temp[i1++]; 3cJ'tRsp<
else #?Ix6 {R
data[cur]=temp[i2++]; y>C
!cYB
} Y~Uf2(7b5
} /
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S
} ?8753{wk
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改进后的归并排序: *L<EGFP
f#c}}>V8
package org.rut.util.algorithm.support; N1Y
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import org.rut.util.algorithm.SortUtil; ^C
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/** DlzL(p@r
* @author treeroot 2z;nPup,
* @since 2006-2-2 pauO_'j_1p
* @version 1.0 ?<J~SF Tt
*/ |K.I%B
public class ImprovedMergeSort implements SortUtil.Sort { @Mya|zb
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private static final int THRESHOLD = 10; Ifp8oL? S;
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/* 6EY\
* (non-Javadoc) ^4IJL",
* I!!cA?W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WReHep
*/ @CM5e!
public void sort(int[] data) { 0s8fF"$
int[] temp=new int[data.length]; :H>I`)bw
mergeSort(data,temp,0,data.length-1); /\e_B6pF<
} p63fpnH
$JOtUB{
private void mergeSort(int[] data, int[] temp, int l, int r) { y:E$n!
int i, j, k; =Fe4-B?I
int mid = (l + r) / 2; P:Q&lnC
if (l == r) dOaOWMrfdf
return; [m! P(o
if ((mid - l) >= THRESHOLD) y=Eb->a){
mergeSort(data, temp, l, mid); 3B]E2
else #+<YFm\i
insertSort(data, l, mid - l + 1); /QB;0PrE
if ((r - mid) > THRESHOLD) LmY[{.'tX
mergeSort(data, temp, mid + 1, r); Swf%WuDj
else (<.\v@7HC
insertSort(data, mid + 1, r - mid); papMC"<g$
7Tp+]"bL
for (i = l; i <= mid; i++) { }x|q*E\
temp = data; 9y[U\[H
} ;Mmu}
for (j = 1; j <= r - mid; j++) { LT)I
?ud
temp[r - j + 1] = data[j + mid]; VOYQ<tg
} ydVDjE
Y
int a = temp[l]; Kf?:dF
int b = temp[r]; ;P<h9(
for (i = l, j = r, k = l; k <= r; k++) { B3yTN6-
if (a < b) { GsO(\hR6^
data[k] = temp[i++]; Z6b]EcP)#
a = temp;
D\;5{,:d
} else { g'!"klS93
data[k] = temp[j--]; N*[b26
b = temp[j]; N=U`BhL_
} pq_U?_5Z'r
} <^$ppwk$
} ES^JRX
u[SqZftmO
/** e)s
l
* @param data cD9U^SOS
* @param l w3VgGc~
* @param i Ugo!
*/ k{{
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private void insertSort(int[] data, int start, int len) { `
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3
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} P(-
} /j3",N+I
} ZJ+ad,?,
} J(8?6&=ck
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堆排序: "3 ++S
GwA\>qXw
package org.rut.util.algorithm.support; CL`+\
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import org.rut.util.algorithm.SortUtil; @#^Y#
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/** /V cbT >=
* @author treeroot Jza?DhSAZ
* @since 2006-2-2 *qYw
* @version 1.0 PZ#up{[o
*/ BK)<~I
public class HeapSort implements SortUtil.Sort{ *Ej;}KSv
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/* (non-Javadoc) b)#rUI|O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g9;s3qXiG
*/ `gCJ[
public void sort(int[] data) { `t9k!y!GV
MaxHeap h=new MaxHeap(); g[O
h.init(data); 7K&Uu3m
for(int i=0;i h.remove(); @@-TW`G7
System.arraycopy(h.queue,1,data,0,data.length); ] ZP!y
} FSz<R*2
m8
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private static class MaxHeap{ M/lC&F(
@+~>utr
void init(int[] data){ y$di_)&g
this.queue=new int[data.length+1]; eB_r.R{
for(int i=0;i queue[++size]=data; +*`kJ)uP
fixUp(size); K;Hgq4
} 1R yE8DdP
} gH,Pz
h 2JmRO
private int size=0; ShlTMTgS
,B_tAg4~
private int[] queue; o~CEja&(
T.')XKP)1N
public int get() { !Ea9
fe
return queue[1]; 9
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} KJS-{ed
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public void remove() { _NwHT`O[
SortUtil.swap(queue,1,size--); br TP}A
fixDown(1); #*w)rGkU2
} Ahbh,U
file://fixdown {98e_z w
private void fixDown(int k) { O0
Uh
int j; k'
Fu&r
while ((j = k << 1) <= size) { A)j!Wgs^z
if (j < size %26amp;%26amp; queue[j] j++; ~H
if (queue[k]>queue[j]) file://不用交换 }kItVx
break; n'q:L(`M
SortUtil.swap(queue,j,k); 5`:d$rv
k = j; Fv)E:PnKC
} g)ZMU^1
} sV5") /~
private void fixUp(int k) { yZm=#.f
while (k > 1) { 5}w
int j = k >> 1; -I6t ^$HA
if (queue[j]>queue[k]) Og@{6>
break; $`%Om WW{
SortUtil.swap(queue,j,k); NOkgG0Z
k = j; XjP;O,x
} imzPVGCD{
} u)r:0;5
h6?Z
} XR[=W(m}
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} f)a0 !U 44
KZ#\ >
SortUtil: QS\wtTXj
P zM yUv
package org.rut.util.algorithm; <HN{.p{
olL? 6)gC
import org.rut.util.algorithm.support.BubbleSort; 1ZRkVHiz0
import org.rut.util.algorithm.support.HeapSort; q
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import org.rut.util.algorithm.support.ImprovedMergeSort; X's<+hK&
import org.rut.util.algorithm.support.ImprovedQuickSort; #pK"
^O*!
import org.rut.util.algorithm.support.InsertSort; S-Bx`e9 '
import org.rut.util.algorithm.support.MergeSort; i'>5vU0?3
import org.rut.util.algorithm.support.QuickSort; )cP)HbOd=
import org.rut.util.algorithm.support.SelectionSort; 4 83rU
import org.rut.util.algorithm.support.ShellSort; 'DpJ#w\81
q{B?j%.o
/** n|rKo<Y0
* @author treeroot ~LOE^6C+~o
* @since 2006-2-2 IFS_DW
* @version 1.0 %m[ZU<v
*/ Z_S{$D
public class SortUtil { Gky^S#
public final static int INSERT = 1; 0WSZhzNyY
public final static int BUBBLE = 2; E'Ux2sh
public final static int SELECTION = 3; g3{UP]Z71
public final static int SHELL = 4; gVR]z9
public final static int QUICK = 5; k 9z9{
public final static int IMPROVED_QUICK = 6; XQfmD;U
public final static int MERGE = 7; tk=S4/VWv
public final static int IMPROVED_MERGE = 8; YOrq)_ l
public final static int HEAP = 9; 7:b.c
eMFxdtH
public static void sort(int[] data) { { %]imf|g.
sort(data, IMPROVED_QUICK); |KS,k|).
} U-m MKRV
private static String[] name={ ,5ZQPICF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )78T+7Kq
}; ]cmX f
uZJfIC<>
private static Sort[] impl=new Sort[]{ g|$;jQ\_
new InsertSort(), \M._x"
new BubbleSort(), ybJ wFZ80
new SelectionSort(), NT5'U
new ShellSort(), j4#uj[A
new QuickSort(), PR$;*|@
new ImprovedQuickSort(), ^i!6z2/
new MergeSort(), v0E6i!D/
new ImprovedMergeSort(), |K-`
new HeapSort() |vGHh zZ|
}; Pgy[\t 2K
6W=V8
public static String toString(int algorithm){ 7C3YVm6g
return name[algorithm-1]; R(VOHFvW6
} 2ag8?#
vxI9|i
public static void sort(int[] data, int algorithm) { Bi :!"Nw[X
impl[algorithm-1].sort(data); Q3&q%n|<
} !8cV."~
kC
6*An_f
public static interface Sort { ykPiZK
public void sort(int[] data); uh2_Rzln
} 73Jm
fCJjFL:
public static void swap(int[] data, int i, int j) { [?KGLUmTAI
int temp = data; P+|L6w*|[
data = data[j]; v*=P
data[j] = temp; h3 XSt
} 0*rD'?)K+
} b"N!#&O