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。 hle@= e/n
插入排序: 1VG7[#Zy
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package org.rut.util.algorithm.support; @FuX^Q.[
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import org.rut.util.algorithm.SortUtil; C6:;
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/** ra{HlB{
* @author treeroot >orDw3xC
* @since 2006-2-2 h>n<5{zqM
* @version 1.0 xQ8?"K;iX
*/ \eS-wO7%
public class InsertSort implements SortUtil.Sort{ "C]_pWk
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/* (non-Javadoc) $9<P3J 1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y?V#LW[^E
*/ RZI4N4o
public void sort(int[] data) { &fwb?Vn4
int temp; u]t#Vf-$u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o&rNM5:
} |z.Ov&d4)(
} zA&]#mc
} WO{9S%ck
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} ],Y+|uX->
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冒泡排序: (%|L23
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package org.rut.util.algorithm.support; XNB4KjT
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import org.rut.util.algorithm.SortUtil; Y_M3-H=0
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/** J ?H|"
* @author treeroot zvh&o*\2<d
* @since 2006-2-2 hgF4PdO1e
* @version 1.0 Rm=[Sj84
*/ )cxML<j'
public class BubbleSort implements SortUtil.Sort{ BxGz4
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/* (non-Javadoc) `xu/|})KI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 08;t%[R
*/ (J\Qo9Il
public void sort(int[] data) { 3AarRQWsn
int temp; +FtL_7[v
for(int i=0;i for(int j=data.length-1;j>i;j--){ Pqv9>N|
if(data[j] SortUtil.swap(data,j,j-1); I i J%.U
} PD@@4@^
} SR&'38UCe
} REKv&^FLN
} W$?Bsz)
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} sqk$q pV6
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选择排序: 1$rrfg
7D wf0Re`
package org.rut.util.algorithm.support; jxA*Gg3cT5
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import org.rut.util.algorithm.SortUtil; DX@*lM
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/** vhu5w#]u*
* @author treeroot ~JxAo\2i
* @since 2006-2-2 #kL4Rm;
* @version 1.0 ryoD 1OE
*/ .g95E<bd
public class SelectionSort implements SortUtil.Sort { L9(!L$
NW@guhK.
/* ^1w*$5YI
* (non-Javadoc) @P}!mdH1
* rJ_fg$.<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '5m`[S-IU
*/ zu|=1C#5h
public void sort(int[] data) { /,#&Htk
int temp; WG.J-2#3
for (int i = 0; i < data.length; i++) { {,b:f
int lowIndex = i; "ku ?A ^f
for (int j = data.length - 1; j > i; j--) { >Y[nU~ w
if (data[j] < data[lowIndex]) { 5nJmabw3
lowIndex = j; XKT2u!Lx
} L#NW<T
} ]h0 K*{
SortUtil.swap(data,i,lowIndex); lhhp6-r
} jCv%[H7
} .#$D\cwV
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} *L~88-V^
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Shell排序: V61.UEN
]R s
package org.rut.util.algorithm.support; Ww $?X LF
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import org.rut.util.algorithm.SortUtil; .jjvS
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/** yu]nK-Y7S
* @author treeroot 60&4?<lR4
* @since 2006-2-2 }X[wWH
* @version 1.0 h$eVhN&Vv
*/ ia}V8i
public class ShellSort implements SortUtil.Sort{ |qTS{qQh{L
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/* (non-Javadoc) {QRrAi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p-;I"uKv
*/ QnNddCiu=
public void sort(int[] data) { p6e9mSs
for(int i=data.length/2;i>2;i/=2){ X:Z*7P/
for(int j=0;j insertSort(data,j,i); 6t(I.>-
} $S _VR
} a4iq_F#NF
insertSort(data,0,1); 4P\?vz"
} *wetPt)~v_
xnm!$ $W
/** &DgJu.
* @param data qCaM]Y
* @param j D,Jyb0BW
* @param i -YHyJs-bU
*/ woCFkO;'O
private void insertSort(int[] data, int start, int inc) { ^`XTs!.
int temp; RTR@p =ck
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )w3HC($g
} 5L8 )w5
} -^%YrWgd?
} $"G=r(MW
t&99ZdE
} &;O)Dw
gr
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快速排序: ;3H#8x-
p&~= rp`E
package org.rut.util.algorithm.support; #XJ`/\E]
zU$S#4/C
import org.rut.util.algorithm.SortUtil; hB)TH'R{:
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/** 8bIwRVA2\
* @author treeroot b4HUgW3Ac
* @since 2006-2-2 $-:j'e:j
* @version 1.0 pl.K*9+
*/ rWo&I_{
public class QuickSort implements SortUtil.Sort{ ?pJUbZ#J
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/* (non-Javadoc) zU1[+JJY"{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @s2<y@
*/ M:?
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public void sort(int[] data) { [C"[#7
quickSort(data,0,data.length-1); H*]B7?S
} `K^j:fE7n
private void quickSort(int[] data,int i,int j){ 8P#jC$<
int pivotIndex=(i+j)/2; )m7 Y o
file://swap U1wsCH3+n
SortUtil.swap(data,pivotIndex,j); v!EE[[
Q7b$j\;I
int k=partition(data,i-1,j,data[j]); .}.63T$h9
SortUtil.swap(data,k,j); 5,<:|/r
if((k-i)>1) quickSort(data,i,k-1); ;.<0ln V
if((j-k)>1) quickSort(data,k+1,j); aJi0!6oy
9M&uQccY
} CkJ\v%JAW
/** @3:oo
/;
* @param data _PR><L_
* @param i OAhCW*B
* @param j C3p/|{TP
* @return .% rB-vO:g
*/ \-?@
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private int partition(int[] data, int l, int r,int pivot) { If*t$f>y4N
do{ v3vQfcxR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^Q'^9M2)
SortUtil.swap(data,l,r); mSu1/?PS
} *&VqAc%qD
while(l SortUtil.swap(data,l,r); Jm l4EW7
return l; eZ^-gk?
} aF~ 0\XC
R} #6
} DWQ@]\
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改进后的快速排序: g}\Yl.
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x
package org.rut.util.algorithm.support; 9.
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import org.rut.util.algorithm.SortUtil; *mgK^9<
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/** Mk -Rl
* @author treeroot @}{~Ofs
* @since 2006-2-2 vQ/&iAyut
* @version 1.0 RI
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*/ [aK7v{Wu
public class ImprovedQuickSort implements SortUtil.Sort { ??!+2G#%!
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private static int MAX_STACK_SIZE=4096; )Bq~1M 2
private static int THRESHOLD=10; &u_s*
/* (non-Javadoc) )OAd[u<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@n9i@UsO
*/ AJ*FQo.U
public void sort(int[] data) { 3 oG5E"G
int[] stack=new int[MAX_STACK_SIZE]; -R[ *S "
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int top=-1; Ris5)*7
int pivot; g`}+K U
int pivotIndex,l,r; S]7RGzFe
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stack[++top]=0; ];.H]TIc6
stack[++top]=data.length-1; 3\xvy{r
PV*U4aP
while(top>0){ R0n#FL^E
int j=stack[top--]; WzC_M>_
int i=stack[top--]; 0pSqk/
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pivotIndex=(i+j)/2; ].j;d2xT\
pivot=data[pivotIndex]; p)$DpNL% p
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pJ
SortUtil.swap(data,pivotIndex,j); F|3 =Cl
O+Zt*jN;
file://partition 39w|2%(O.
l=i-1; GJL lMi
r=j; ]&')#YO
do{ Ighd,G-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8}&O7zO?
SortUtil.swap(data,l,r); MMMuT^X
} <3wfY
#;><
while(l SortUtil.swap(data,l,r); i U^tv_1
SortUtil.swap(data,l,j); 5s >UM@})
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if((l-i)>THRESHOLD){ J~6-}z
stack[++top]=i; >&|C
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stack[++top]=l-1; [,Io!O
} MVGznf?
if((j-l)>THRESHOLD){ uIG,2u,
stack[++top]=l+1; rI\G&OqpP
stack[++top]=j; 6d RxfbL
} 6w
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h|_E>6d)
} Sc!{
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file://new InsertSort().sort(data); qjsS2,wM
insertSort(data); [dK5kO
} 0u]!C"VX
/** Xgge_`T9
* @param data 6iiH+Nc
*/ -/>SdR$D7
private void insertSort(int[] data) { =kp-[7
int temp; O<0G\sU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z9k3@\7
} Z\{"/( Hi
} Ut;,Z
} `wJR^O!e
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} kvzGI>H:
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归并排序: A8?uCkG
~bp^Q|
wM
package org.rut.util.algorithm.support; jpl"KN?X
H1]An'qz,
import org.rut.util.algorithm.SortUtil; fa7I6 i
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/** n5Ad@B g
* @author treeroot [MmOPm}@
* @since 2006-2-2 c:SA#.
* @version 1.0 6R%Ra
*/ ZSKSMI%D
public class MergeSort implements SortUtil.Sort{ 0-ISOA&
9V]\,mD=
/* (non-Javadoc) y#'|=0vTvP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oy:;v7
*/ }n+#o!uEf
public void sort(int[] data) { 28KS*5S
int[] temp=new int[data.length]; ; ]*
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mergeSort(data,temp,0,data.length-1); H\OV7=8
} SH"e x,=
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private void mergeSort(int[] data,int[] temp,int l,int r){ ^f:oKKaAW;
int mid=(l+r)/2; qSRE)C=)
if(l==r) return ; ,)u\G(N
mergeSort(data,temp,l,mid); 7V6gT}R
mergeSort(data,temp,mid+1,r); - J9K
for(int i=l;i<=r;i++){ gpB pG
temp=data; '%@fW:r~
} UN7>c0B
int i1=l; >4gGb)
int i2=mid+1; Cv@ZzILyoK
for(int cur=l;cur<=r;cur++){ uyt]\zVT
if(i1==mid+1) qNI2+<u)j
data[cur]=temp[i2++]; ('q u#.'
else if(i2>r) (Kl96G<Wej
data[cur]=temp[i1++]; <r_L-
else if(temp[i1] data[cur]=temp[i1++]; yF&"'L
else Nr\[|||%
data[cur]=temp[i2++]; m{(G%n>E&
} 'lPt.*Y<u
} $"z|^ze
0ZY.~b'eu
} o ]UG*2
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改进后的归并排序:
~yQby&s
wb@TYvDt
package org.rut.util.algorithm.support; d4Y8q1
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import org.rut.util.algorithm.SortUtil; ou;E@`h;x
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/** oMH-mG7:K
* @author treeroot :J|t! `
* @since 2006-2-2 F]e]
* @version 1.0 =-XI)JV#
*/ 0{0|M8
public class ImprovedMergeSort implements SortUtil.Sort {
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private static final int THRESHOLD = 10; Q/oe l'O*x
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/* 7B@[`>5?%L
* (non-Javadoc) 1'c
* 0_d,sC?V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )/BI:)
*/ jmgU'w-s
public void sort(int[] data) { NwH`t#zd
int[] temp=new int[data.length]; 3urL*Fw,
mergeSort(data,temp,0,data.length-1); %:bTOw[4r
} U$;FOl
v%_5!SR
private void mergeSort(int[] data, int[] temp, int l, int r) { L*TPLS[lh
int i, j, k; %d<uOCf\Q
int mid = (l + r) / 2; u{F^Ngy
)
if (l == r) zKycd*X
return; 's.%rre%
if ((mid - l) >= THRESHOLD) UZ8
vZ
mergeSort(data, temp, l, mid); 8!a6)Zeux
else Q;m:o8Q5
insertSort(data, l, mid - l + 1); .VFa,&5;3
if ((r - mid) > THRESHOLD) 9>y6zFTV
mergeSort(data, temp, mid + 1, r); ?&Zfb
else }cov"o
insertSort(data, mid + 1, r - mid); }}AooziH9
aJ[K' 5|
for (i = l; i <= mid; i++) { 3z^l
temp = data; X2avo|6e
} k 7 !{p
for (j = 1; j <= r - mid; j++) { 739J] M
temp[r - j + 1] = data[j + mid]; E;[ANy4L
} V2< 4~J2:9
int a = temp[l]; ~*WSH&ip
int b = temp[r]; [ugBVnma
for (i = l, j = r, k = l; k <= r; k++) { wYxnKm~f
if (a < b) { !+qy~h
data[k] = temp[i++]; b2x8t7%O
a = temp; FBn`sS8hH
} else { Ep/kb-~-
data[k] = temp[j--]; p~ `f.q$'
b = temp[j]; cVrses^yE
} e0i&?m
} w Phs1rL
} ?nW K s
xHs8']*\
/** eGZ{%\PH<
* @param data 4wLp
* @param l !!NVx\a
* @param i O gQE1{C
*/ Y9h~ hD
private void insertSort(int[] data, int start, int len) { x1\a_Kt
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EZ+_*_9
} GEr]zMYG[A
}
'g<0MOq{
} 1BQB8i-,
} q&.SB`
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堆排序: Im9^mVe
< *
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package org.rut.util.algorithm.support; V~rF`1+5N
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import org.rut.util.algorithm.SortUtil; _x<CTFTL
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/** }@-4*5P3
* @author treeroot O2[uN@nY
* @since 2006-2-2 :Oz! M&Ov
* @version 1.0 >P7|-bV
*/ P4vW.|@
public class HeapSort implements SortUtil.Sort{ [[{y?-U
tx=~bm"*?
/* (non-Javadoc) wO6`Ap
t1:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Etk`>,]Y>y
*/ ^rd]qii"
public void sort(int[] data) { &%QtUPvr9
MaxHeap h=new MaxHeap(); B dHLow
h.init(data); ulM6R/V:?
for(int i=0;i h.remove(); i#$N,kt
System.arraycopy(h.queue,1,data,0,data.length); 92}UP=RW!
} a0y7a/@c
>3HLm3 T
private static class MaxHeap{ F<wwuCbF
&lg+uK
void init(int[] data){ !C&!Wj
this.queue=new int[data.length+1]; A;~u"g 'z&
for(int i=0;i queue[++size]=data; 52-Gk2dp
fixUp(size); c hE~UQ
} B2UQO4[w
} KNtsz[#b
nK*$P +[R
private int size=0; l@-J&qG
OS c&n>\t
private int[] queue; cnh\K.*}_x
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public int get() { 8$ dJh]\Y
return queue[1]; u_.`I8qa
} &PRu[!
<&3qFK*9r
public void remove() { Q<$I,C]
SortUtil.swap(queue,1,size--); S:qML]RO
fixDown(1); _9!_fIY
} Xz`?b4i
file://fixdown =y"
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private void fixDown(int k) { @}&o(q1M0
int j; _1w?nN'
while ((j = k << 1) <= size) { 2J;h}/!H
if (j < size %26amp;%26amp; queue[j] j++; Q/T\Rr_d
if (queue[k]>queue[j]) file://不用交换 Yc+0OBH[
break; [([?+Ouy
SortUtil.swap(queue,j,k); y>zPsc,
k = j; mZ9+.lm
} !Kv.v7'N/k
} yQ)y#5/<6
private void fixUp(int k) { wTBp=)1)f
while (k > 1) { 9)={p9FZY
int j = k >> 1; I>X _j)
if (queue[j]>queue[k]) \D8d!gr
break; K9Dxb
SortUtil.swap(queue,j,k); {3Z&C$:s
k = j; Y$8
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} 3RpDIl`0
} ~Ein)5
lxTW1kr
} Z IfhC'
DJSSc
} D@T>z;
AtNu:U$
SortUtil: e-Z+)4fH
[G{{f
package org.rut.util.algorithm; ^7Q}W#jy
W.h6g8|wx
import org.rut.util.algorithm.support.BubbleSort; CA[-\>J7y
import org.rut.util.algorithm.support.HeapSort; !( xeDX
import org.rut.util.algorithm.support.ImprovedMergeSort; 0tVZvXgTu
import org.rut.util.algorithm.support.ImprovedQuickSort; l_JPkM(mJw
import org.rut.util.algorithm.support.InsertSort; >/;V_(
import org.rut.util.algorithm.support.MergeSort; N_TWT&o4
import org.rut.util.algorithm.support.QuickSort; 9kj71Jp&}
import org.rut.util.algorithm.support.SelectionSort; 4}sfJ0HhX
import org.rut.util.algorithm.support.ShellSort; wkm;yCF+
Mfjj+P
/** pQc5'*FKd
* @author treeroot aML?$_6
* @since 2006-2-2 `A O_e4D0i
* @version 1.0 :Mr _/t2(
*/ xk=5q|u_-
public class SortUtil { r=[T5,L(s
public final static int INSERT = 1; T1ZAw'6(K
public final static int BUBBLE = 2; wPTXRq%
public final static int SELECTION = 3; >W[8wR
public final static int SHELL = 4; T
'pX)ZH
public final static int QUICK = 5; Kx.I'_Qk
public final static int IMPROVED_QUICK = 6; .L'>1H]B
public final static int MERGE = 7; QjMH1S
public final static int IMPROVED_MERGE = 8; ^]}UyrOn
public final static int HEAP = 9; fw@n[u{~
'6*^s&H~
public static void sort(int[] data) { H8j#rC#&pm
sort(data, IMPROVED_QUICK); !gv/ jdF
} #)`N
private static String[] name={ D2x-Wa
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >x0"gh
}; 1au1DvH
"\bbe @
private static Sort[] impl=new Sort[]{ *"#62U6
new InsertSort(), FCxLL"))
new BubbleSort(), 9:N@+;|T
new SelectionSort(), HgJ:R f]
new ShellSort(), +VSJve |
new QuickSort(), \vbU| a
new ImprovedQuickSort(), *9((X,v@/
new MergeSort(), ej dYh $
new ImprovedMergeSort(), }6SfI;
new HeapSort() f Co- ony
}; 8/X#thG
_y{z%-
public static String toString(int algorithm){ w[@>k@=
return name[algorithm-1]; 7!Z\B-_,
} &U:bRzD
:lQl;Q -e
public static void sort(int[] data, int algorithm) { ,w%cX{
impl[algorithm-1].sort(data); T% J;~|
} Fi.gf?d
-miWXEe@l
public static interface Sort { t3!?F(&
public void sort(int[] data); s"b()JP
} We3Z#}X
mB&nN+MV
public static void swap(int[] data, int i, int j) { $@kGbf~k
int temp = data; +9db1:
data = data[j]; FWqnlK#
data[j] = temp; (6i)m
c(
} vKYdYa\
} kylR)