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。 T9]0/>
插入排序: |42;171
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package org.rut.util.algorithm.support; "XLtrAu{
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import org.rut.util.algorithm.SortUtil; shy[>\w
/** )uR_d=B&
* @author treeroot +c
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* @since 2006-2-2 Dr=$ }Y
* @version 1.0 ]SPuNBsy)
*/ :2
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public class InsertSort implements SortUtil.Sort{ vZ57
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/* (non-Javadoc) j&a\ K}U!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )8 aHj4x
*/ @H~oOf
public void sort(int[] data) { [UC_
int temp; Iu`S0#+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XE2rx2k
} zks7wt]A
} t)?K@{ 9
} L$s ENOm
) )FLM^dj
} J-uQF|
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AP
冒泡排序: 9rT^rTV
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package org.rut.util.algorithm.support; `^'fS@VA
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import org.rut.util.algorithm.SortUtil; In1n.oRFn^
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/** ST?Rl@4
* @author treeroot 2cIKph
* @since 2006-2-2 ONDO
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* @version 1.0 q+p}U}L=
k
*/ %eIaH!x:
public class BubbleSort implements SortUtil.Sort{ #-+Q]}fB4
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/* (non-Javadoc) g)TZ/,NQ{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CxJ3u
*/ o,c}L9nvt
public void sort(int[] data) { B9$f y).Gp
int temp; 'kY/=*=Q
for(int i=0;i for(int j=data.length-1;j>i;j--){ |>'N^
if(data[j] SortUtil.swap(data,j,j-1); 9Oq(` 4
} |K{d5\_
} UA2KY}pz5
} { gs$pBu
} ~x<?Pj
xLi3|^q
} X/vyb^:U
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选择排序: -@`Ah|m@}
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package org.rut.util.algorithm.support; 19y,O0# _
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import org.rut.util.algorithm.SortUtil; Cc%{e9e*
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/** G `!A#As
* @author treeroot ;s3\Z^h4kd
* @since 2006-2-2 .|hsn6i/-
* @version 1.0 |W=-/~X
*/ [+R_3'aK
public class SelectionSort implements SortUtil.Sort { X;UEq]kcmn
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/* G7v<Q,s
* (non-Javadoc)
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* !5?_)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Z9d.-
*/ 4'*.3f'bp
public void sort(int[] data) { _xm<zy{`S
int temp; BN%cX2j
for (int i = 0; i < data.length; i++) { %*npLDi
int lowIndex = i; Z}\,rex
for (int j = data.length - 1; j > i; j--) { _&9P&Zf4
if (data[j] < data[lowIndex]) { [TUs^%2@
lowIndex = j; 7qUg~GJX
} 8IxIW0
} ~xsJML
SortUtil.swap(data,i,lowIndex); m;>G]Sbe
} <Lxp t
} =SeQ- H#
qGMU>J.;c
} Xa#.GrH6
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Shell排序: cb0rkmO
Y%0rji
package org.rut.util.algorithm.support; 4
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PlS)Zv3
import org.rut.util.algorithm.SortUtil; -qaO$M^Q
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/** aQ\SV0PI
* @author treeroot h%W,O,K/
* @since 2006-2-2 oQmXKV+[v
* @version 1.0 4K7ved)
*/ W#NZnxOX"
public class ShellSort implements SortUtil.Sort{ \#Jq%nd
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/* (non-Javadoc) x7<l*WQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sZr \mQ~
*/ }[UH1+`L
public void sort(int[] data) { K\;4;6g
for(int i=data.length/2;i>2;i/=2){ &I8DK).M+
for(int j=0;j insertSort(data,j,i); Wex2Fd?DO
} w6X:39d
} ^9 LoxU-
insertSort(data,0,1); l1]{r2g
} _/}$X"4
Et(H6O8
/** 0uW)&>W
* @param data UYJ>L
* @param j +}?%w|8||s
* @param i *C+[I
*/ ?Sa,n^b*H
private void insertSort(int[] data, int start, int inc) { J(/J;PW
int temp; y }R2ZO
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
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} Ij.mLO]
} I ZLCwaW
} K39I j_3
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} 2}/r>]9^-
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快速排序: mk!8>XvM
JBJ?|}5k4c
package org.rut.util.algorithm.support; GBRiU&D
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import org.rut.util.algorithm.SortUtil; =1R
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/** .B2e$`s$
* @author treeroot M!!vr8}
* @since 2006-2-2 m,q)lbRl
* @version 1.0 N5=}0s]e
*/ Gsy>"T{CY
public class QuickSort implements SortUtil.Sort{ |IzL4>m:;
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/* (non-Javadoc) er1XZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JLo E)\Mi
*/ R[v<mo[s
public void sort(int[] data) { k{F6WQ7
quickSort(data,0,data.length-1); StTxga|
} AI{0;0
private void quickSort(int[] data,int i,int j){ $E^sA|KcT
int pivotIndex=(i+j)/2; rDoMz3[w
file://swap -]u>kjiIT
SortUtil.swap(data,pivotIndex,j); is^R8a
y&8`NS#_p?
int k=partition(data,i-1,j,data[j]); )zz{~Cf
SortUtil.swap(data,k,j); <kwF<J
if((k-i)>1) quickSort(data,i,k-1); u^E0u^
if((j-k)>1) quickSort(data,k+1,j); 7SYe:^Dx
d#bg(y\G|
} )T
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/** 4h--x~ @
* @param data 04v
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* @param i VZ`YbY
* @param j t!J>853
* @return wG)[Ik6:
*/ mdrqX<x'~
private int partition(int[] data, int l, int r,int pivot) {
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do{ '@#(jY0_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~-lUS0duh
SortUtil.swap(data,l,r); |r;>2b/ x
} e<`?$tZ3
while(l SortUtil.swap(data,l,r); ( )ldn?v
return l; l,b,U/3R.
} ,H/O"%OJ
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} []
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改进后的快速排序: u R5h0Fi
Xg_l4!T_l
package org.rut.util.algorithm.support; ,d_rK\J
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import org.rut.util.algorithm.SortUtil; E2cZk6~m{
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/** 3y2L!&'z
* @author treeroot _<c}iZv@
* @since 2006-2-2 .:Wp9M
* @version 1.0 Q7v1xBM
*/ iRG6Cw2
public class ImprovedQuickSort implements SortUtil.Sort { AOcUr)
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private static int MAX_STACK_SIZE=4096; Ic!x y
private static int THRESHOLD=10; saQ
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/* (non-Javadoc) #X$s5H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -:45Q{u/
*/ B|9XqQ EI
public void sort(int[] data) { xmC5uT6L3M
int[] stack=new int[MAX_STACK_SIZE]; 5i'?oXL
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int top=-1; 0
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int pivot; :cXN
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int pivotIndex,l,r; X#h a*u~U
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stack[++top]=0; 0ZI}eZA j
stack[++top]=data.length-1; y>u|3:z
,`a8@
while(top>0){ Q\xDAOEL
int j=stack[top--]; G
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int i=stack[top--]; V7gL*,3>=
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pivotIndex=(i+j)/2; C; U4`0=8
pivot=data[pivotIndex]; 3syA$0TZt
a;~< iB;3"
SortUtil.swap(data,pivotIndex,j); f qWme:x
FoZI0p?L)9
file://partition l>s@&%;Mg
l=i-1; 4u41M,nJQd
r=j; s)-bOZi
do{ ".( G,TW
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0xCe6{86
SortUtil.swap(data,l,r); {]m/15/$C
} BAi0w{
while(l SortUtil.swap(data,l,r); y[S9b(:+
SortUtil.swap(data,l,j); <W7WlT
unz~vG1Tn
if((l-i)>THRESHOLD){ .V_5q:tu
stack[++top]=i; Z:x`][vg
stack[++top]=l-1; b~YIaD[Z
} U-,s/VQ?
if((j-l)>THRESHOLD){ Z }>;@c
stack[++top]=l+1; 5^ubXA
stack[++top]=j; 3tkCmB
} 7,alZ"%W
4,Uqcw?!F'
} fN<Y3^i"
file://new InsertSort().sort(data); N0\<B-8+,>
insertSort(data); -3b_}by
} $cm9xW&
/** F1M:"-bda
* @param data }rs>B,=*k
*/ RVs=s}|>*
private void insertSort(int[] data) { a gL@A
int temp; \ZE=WvnhZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >$r o\/
} Qr6PkHU
} M&9urOa`
} Au(oKs<
wPcEvGBN=
} cb{"1z
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归并排序: 2<w vO 9
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package org.rut.util.algorithm.support; 4)'U!jSb
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import org.rut.util.algorithm.SortUtil; pNmWBp|ER
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/** =WZ@{z9J
* @author treeroot n:1Ijh
1
* @since 2006-2-2 e VQ-?DK
* @version 1.0 tAY{+N]f
*/ WlGT&m&2
public class MergeSort implements SortUtil.Sort{ d 79 2#Dc
O;}K7rSc
/* (non-Javadoc) [U"/A1p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JB.U&
*/ jPZpJ:
public void sort(int[] data) { b8vZ^8tBV
int[] temp=new int[data.length]; tB(~:"|8
mergeSort(data,temp,0,data.length-1); puMbB9)
} zf^|H%
~^
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private void mergeSort(int[] data,int[] temp,int l,int r){ ^kz(/c/ ?
int mid=(l+r)/2; P46Q3EE
if(l==r) return ; &,{YfAxQ`
mergeSort(data,temp,l,mid); :rjfAe=s
mergeSort(data,temp,mid+1,r); /5j5\F:33
for(int i=l;i<=r;i++){ (vchZn#
temp=data; s2 :Vm\
} l~DIV$>,Z
int i1=l; ~mi4V
int i2=mid+1; R-1MD
for(int cur=l;cur<=r;cur++){ y%kZ##
if(i1==mid+1) |')PQ
data[cur]=temp[i2++]; LGX+_"
else if(i2>r) P*VZ$bUe5@
data[cur]=temp[i1++]; v+SdjFAY
else if(temp[i1] data[cur]=temp[i1++]; }@tgc?CD
else =_ b/g
data[cur]=temp[i2++]; J1~E*t^
} mo(>SnS<
} #h4FLF_w
BpYxH#4
} 9
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改进后的归并排序: S9r+Nsn
w&Gc#-B
package org.rut.util.algorithm.support; {>~9?Xwh
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import org.rut.util.algorithm.SortUtil; `+>K)5hrR
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/** s;*
UP
* @author treeroot -V[x
q
* @since 2006-2-2 VfP\)Rl
* @version 1.0 &/"a
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*/ 0(:SEiz6s
public class ImprovedMergeSort implements SortUtil.Sort { zR]!g|;f
vZ.<OD4
private static final int THRESHOLD = 10; < *;GJ{
ftl?x'P%
/* M6Np!0G
* (non-Javadoc) 5$cjCjY
* w-LENdw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
:2,NKdD
*/ \hBzP^*"n
public void sort(int[] data) { ~dp f1fP
int[] temp=new int[data.length]; Qx8(w"k*
mergeSort(data,temp,0,data.length-1); CS(2bj^6D
} 83gWA>Odh
!U1
vW}H
private void mergeSort(int[] data, int[] temp, int l, int r) { 4nh=Dq[
int i, j, k; ka8Y+Gs
int mid = (l + r) / 2; [0]A-#J
if (l == r) 0< vJ*z|_
return; >0<n%V#s:r
if ((mid - l) >= THRESHOLD) ci$J?a
mergeSort(data, temp, l, mid); A8Fe@$<#8
else '@Rk#=85Z
insertSort(data, l, mid - l + 1); LbRQjwc]W
if ((r - mid) > THRESHOLD) )`R}@(r.
mergeSort(data, temp, mid + 1, r); q`IY;"~
else Xo/H+[;X
insertSort(data, mid + 1, r - mid); (tg9"C
$D !/v)3
for (i = l; i <= mid; i++) { GJrmK
temp = data; &0-oi Y
} {5<fvMO!6
for (j = 1; j <= r - mid; j++) { 09jE7g @X}
temp[r - j + 1] = data[j + mid]; 4R\jZ@D
} s hH2/.>
int a = temp[l]; 83t/\x,Q
int b = temp[r]; %N fpEo
for (i = l, j = r, k = l; k <= r; k++) { gK({InOP
if (a < b) { }^&f {
data[k] = temp[i++]; m:[I$b6AY
a = temp; =f{v:n6
} else { ID,_0b
data[k] = temp[j--]; igk<]AwxS
b = temp[j]; ^4^N} 7>5
} It&CM,=t
} WK(X/!1/k
} ~U"m"zpLP
$m2#oI'D
/** 1*dN. v:5
* @param data 6Jb0MX"AVr
* @param l (b<0=U
* @param i E(|A"=\
*/ D^US2B
private void insertSort(int[] data, int start, int len) { __.MS6"N
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k/wD@H N
} Z}uY%]
} [B)!
} {eaR,d~X
} J~]@#=,v
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堆排序: P{6$".kIY
Jp]?tlT
package org.rut.util.algorithm.support; CMW4Zqau*
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import org.rut.util.algorithm.SortUtil; EXr2d"
7UMZs7L$
/** X_o#!
* @author treeroot <Q9l'u]3$c
* @since 2006-2-2 .F 6US<]
* @version 1.0 .k]`z>uv
*/ <lf692.3
public class HeapSort implements SortUtil.Sort{ s"`~Xnf
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U?h
/* (non-Javadoc) ?IHt T3'Rt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uNyN[U
*/ B\RAX#
public void sort(int[] data) { ^:{8z;w!(
MaxHeap h=new MaxHeap(); .h=n [`RB
h.init(data); N<rq}^qo
for(int i=0;i h.remove(); .T9$O]:o
System.arraycopy(h.queue,1,data,0,data.length); ?uSoJM`wa!
} {wz)^A
sy
wBXa;.
private static class MaxHeap{ @^UgdD,BS,
z1Ieva]
void init(int[] data){ u>fMO9X}2
this.queue=new int[data.length+1]; :6nD "5(
for(int i=0;i queue[++size]=data; 'cpm 4mT
fixUp(size); U 3a2wK
} {k3ItGQ_
} +fXwbZ?p
2~$S @c
private int size=0; (NLw#)?
3O2G+G2
private int[] queue; YQN:&Cls
940:NOgm
public int get() { uMw6b=/U
return queue[1]; Q&]|W
Xv
} w/*G!o-<
'M~`IN`
public void remove() { (& SU)Uvu
SortUtil.swap(queue,1,size--); ~6t!)QATnp
fixDown(1); /(JG\Ut
} l{dsm1#W~
file://fixdown 9?,i+\)qK@
private void fixDown(int k) { >wh v*@Fr
int j; OK80-/8HI
while ((j = k << 1) <= size) { "++\6H<
if (j < size %26amp;%26amp; queue[j] j++; 00 x-
if (queue[k]>queue[j]) file://不用交换 ]%A> swCpn
break; bs"J]">(N
SortUtil.swap(queue,j,k); {OEjITm
k = j; RlL]p`g
} l'(FM^8jv
} [y9a.*]u/@
private void fixUp(int k) { .gg0rTf=-
while (k > 1) { 6U ! P8q
int j = k >> 1; Xb%Q%"?~
if (queue[j]>queue[k]) vWoppt
break; /*y5W-'d^
SortUtil.swap(queue,j,k); fG'~@'P~
k = j; ^ 0YQlT98
} >*{k~Y-G
} VBL4cU8D
3Tu]-.
} ;|vP|Xi
3Qe|'E,U
} P'qBqx[
L6_%SGY_iE
SortUtil: s<{ Hu0K$
V gMgeja
package org.rut.util.algorithm; ]_h3
m:h6J''<Z*
import org.rut.util.algorithm.support.BubbleSort; o+Jnn"8
import org.rut.util.algorithm.support.HeapSort; 4tCM2it%
import org.rut.util.algorithm.support.ImprovedMergeSort; Vr},+Rj
import org.rut.util.algorithm.support.ImprovedQuickSort; I*N"_uKU
import org.rut.util.algorithm.support.InsertSort; -NJpql{Cb
import org.rut.util.algorithm.support.MergeSort; t/;0/ql\
import org.rut.util.algorithm.support.QuickSort; |qMG@
import org.rut.util.algorithm.support.SelectionSort; FJZ'P;3
import org.rut.util.algorithm.support.ShellSort; |;US)B8}*Z
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/** Csuasi3]1d
* @author treeroot .1[.f}g$J
* @since 2006-2-2 '{2]:
* @version 1.0 S#M8}+ZD,
*/ ,)[9RgsE
public class SortUtil { b$DiDm
public final static int INSERT = 1; U/enq,-F^
public final static int BUBBLE = 2; 0]SWyC
:
public final static int SELECTION = 3; ikc1,o
public final static int SHELL = 4; ~QbHp|g
public final static int QUICK = 5; kaCN^yQ
public final static int IMPROVED_QUICK = 6; Ge`7`D>L
public final static int MERGE = 7; jlP*RX
public final static int IMPROVED_MERGE = 8; Sh!c]r>\Q
public final static int HEAP = 9; L4Jm8sy{
jcqUY+T$
public static void sort(int[] data) { M]PZwW8
sort(data, IMPROVED_QUICK); 1 .+O2qB
} }%Mdf6LS64
private static String[] name={ M
v(Pp
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SvSO?H!-
}; o08g]a
D@La-K*5
private static Sort[] impl=new Sort[]{ by>%}#M
new InsertSort(), Z2M(euzfi3
new BubbleSort(), +JtK VF
new SelectionSort(), ,}IcQu'O
new ShellSort(), f`Fj-<v
new QuickSort(), Acw`ytV
new ImprovedQuickSort(), u9@B&
new MergeSort(), {*O%A
new ImprovedMergeSort(), -]0:FKW
new HeapSort() CBd%}il
}; &tZIWV1&
<CVX[R]U
public static String toString(int algorithm){ Nx.9)MjI
return name[algorithm-1]; nKGQU,C
} Jai]z
F[}#7}xjA
public static void sort(int[] data, int algorithm) { `$f`55e
impl[algorithm-1].sort(data); "]=OR>
} uNn1qV
:o^ioX.J
public static interface Sort { @HbRfD/!
public void sort(int[] data); GPHb-
} 1TTS@\
P{)D_Bi
public static void swap(int[] data, int i, int j) { LKvX~68
int temp = data; @LI;q
data = data[j]; m[=SCH-;
data[j] = temp; W\>O$IX^e
} 5Lc@=,/0
} H"/J R