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。 {0jIY
插入排序: ZKbDp~
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package org.rut.util.algorithm.support; udqge?Tz
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import org.rut.util.algorithm.SortUtil; @6xGJ,s
/** +QqH}=
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* @author treeroot Zy]s`aa
* @since 2006-2-2 @]
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* @version 1.0 Q2'eQ0W{o
*/ M StX*Zw
public class InsertSort implements SortUtil.Sort{ E)'8U
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/* (non-Javadoc) M?:\9DDd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r:l96^xs
*/ Q^h5">P
public void sort(int[] data) { mb\t/p
int temp; 'wQy]zm$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]
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} mA{#]Yvf1
} CUhV$A#oo
} !ng\`
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} !;}2F-
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冒泡排序: L~0&
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package org.rut.util.algorithm.support; ,w\ wQn>]K
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import org.rut.util.algorithm.SortUtil; %O) Z
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/** N~#D\X^t.
* @author treeroot ~Yl$I,
* @since 2006-2-2 ; h+ q
* @version 1.0 gL]'B!dGd
*/ U )Zt-og
public class BubbleSort implements SortUtil.Sort{ ,Aa|Bd]b
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/* (non-Javadoc) ^8742.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?V+wjw
*/ (Pz8iz
public void sort(int[] data) { R7aXR\ R
int temp; G1_Nd2w
for(int i=0;i for(int j=data.length-1;j>i;j--){ I6w/0,azC
if(data[j] SortUtil.swap(data,j,j-1); 1i,4".h?M
} K\sbt7~
} fA
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} {[3YJkrM
} Dc:DY:L^
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} iSd?N}2,I
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选择排序: kMS5h~D[
0eA5zFU7
package org.rut.util.algorithm.support; b>=7B6 Aw
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import org.rut.util.algorithm.SortUtil; ZlM_m
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/** 3}4#I_<$F@
* @author treeroot @&:VKpu\
* @since 2006-2-2 uX0
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* @version 1.0 p":@>v?
*/ (5(fd.m+_
public class SelectionSort implements SortUtil.Sort { s`Vf+l0
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/* 1~EO+
* (non-Javadoc) Y(z}[`2
* 33M}>$ZH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !fZLQc
*/ {y/-:=S)A
public void sort(int[] data) { M71R -B`-
int temp; (HSw%e
for (int i = 0; i < data.length; i++) { 5&%fkZ0
int lowIndex = i; j];G*-iv{
for (int j = data.length - 1; j > i; j--) { [tN` :}?
if (data[j] < data[lowIndex]) { W"O-L
lowIndex = j; z@`@I
} U$09p;~$Ww
} 3Q$c'C
SortUtil.swap(data,i,lowIndex); 0.(Ml5&e
}
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} .nPL2zO
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} XW:%vJu^`
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Shell排序: {c?ymkK
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package org.rut.util.algorithm.support; 0%;MVMH
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import org.rut.util.algorithm.SortUtil; 9TW8o}k`
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/** $P_x v
* @author treeroot ]W|RtdF3.N
* @since 2006-2-2 K Dz]wNf
* @version 1.0 aZxO/b^j
*/ u7~mnl
public class ShellSort implements SortUtil.Sort{ Wa}"SqYr h
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/* (non-Javadoc) .J:;_4x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %OFj
*/ Nc"NObe
public void sort(int[] data) { 0w+5'lOg
for(int i=data.length/2;i>2;i/=2){ U_}hfLILi
for(int j=0;j insertSort(data,j,i); N=<=dp(
} Xiw@
} 64b<0;~
insertSort(data,0,1); ze$Y=<S
} }_vM&.GFlL
F b2p(.
/** XP4jZCt9
* @param data U>1b9G"_
* @param j mR!rn^<l
* @param i l"?]BC~
*/ E6JV}`hSk
private void insertSort(int[] data, int start, int inc) { [nC4/V+-
int temp; V:QdQ;c
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `M6YblnJZ
} 1zR/HT
} $BaK'7=3*
} g X8**g'
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} @%%bRY
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快速排序: oB3q AP
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package org.rut.util.algorithm.support; }eI`Qg
CCn/ udp@
import org.rut.util.algorithm.SortUtil; e-jw^
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/** IF^[^^v+H
* @author treeroot xLZMpP5c
* @since 2006-2-2 @,GjeF]!
* @version 1.0 tz3]le|ml
*/ QWQ!Ak
public class QuickSort implements SortUtil.Sort{ %L28$c3p
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/* (non-Javadoc) r
/^'Xj'(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D|"sE>
*/ h2AGEg'g2[
public void sort(int[] data) { 2>ys2:z
quickSort(data,0,data.length-1); RpU Lm1b
} 5W|u5AIw
private void quickSort(int[] data,int i,int j){ DYkC'+TEX
int pivotIndex=(i+j)/2; hO%Y{Gg
file://swap we
}#Ru*
SortUtil.swap(data,pivotIndex,j); <TL])@da
$>|?k$(x
int k=partition(data,i-1,j,data[j]); (%Ng'~J\|
SortUtil.swap(data,k,j); 1"M"h_4
if((k-i)>1) quickSort(data,i,k-1); y>%W;r)
if((j-k)>1) quickSort(data,k+1,j); nQ!N}5[z'
/^~p~HKtx
} -S`TEX
/** .:T9pplq
* @param data \?r$&K]4
* @param i jm4)gmC
* @param j sK#H4y+<
* @return iY}QgB< M
*/ |^>u<E5
private int partition(int[] data, int l, int r,int pivot) { IC\E,m
do{ oy`3r5g
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {a[Uv
SortUtil.swap(data,l,r); l<s :%%CX
} " S ?Km
while(l SortUtil.swap(data,l,r); _dJp
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return l; ys/`{:w8p
} gZ1N&/9;
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} 6|%^pjX5
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改进后的快速排序: <xXiJU+
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package org.rut.util.algorithm.support; /j$$0F>s7
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import org.rut.util.algorithm.SortUtil; 0PR4g}"
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/** l.sm~/
* @author treeroot -6(h@F%E
* @since 2006-2-2 5sG ]3z+1
* @version 1.0 PpW
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*/ RA!x
public class ImprovedQuickSort implements SortUtil.Sort { L,f^mX0<
mi*:S%;h
private static int MAX_STACK_SIZE=4096; XSD"/_xD
private static int THRESHOLD=10; b?sAEU;
/* (non-Javadoc) ZCj>MA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P0a>+^:%
*/
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public void sort(int[] data) { [O.LUR;
int[] stack=new int[MAX_STACK_SIZE]; hgF21Oj9
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int top=-1; J11dqj
int pivot; Pw0{.W~r
int pivotIndex,l,r; kt;}]O2%R
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stack[++top]=0;
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stack[++top]=data.length-1; ?psOj%
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while(top>0){ R~U2/6V
int j=stack[top--]; ]|H]9mys98
int i=stack[top--]; y.L|rRe@P
Wh#os,U$
pivotIndex=(i+j)/2; jI@bTS o
pivot=data[pivotIndex]; U/}AiCdj@
Uh<H*o6e 9
SortUtil.swap(data,pivotIndex,j); dw|-=~
U@1#!ZZ6
file://partition qpluk!
l=i-1; 46QYXmNQ}
r=j; J[I"/sdk-
do{ ,e}mR>i=e
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *?EjYI
SortUtil.swap(data,l,r); =e"H1^Ml
} gEcnn.(S
while(l SortUtil.swap(data,l,r); 8 /:X&
&
SortUtil.swap(data,l,j); mBYS"[S(
{s9y@c*15.
if((l-i)>THRESHOLD){ :
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stack[++top]=i; AJJ%gxqGq
stack[++top]=l-1; >FK)p
} yt]Oj*nn0K
if((j-l)>THRESHOLD){ Fm-q=3
stack[++top]=l+1; &!3VqHQ`
stack[++top]=j; `kaR@t
} V\e13cL]
`?Y_0Nh>
} d;@E~~o?B]
file://new InsertSort().sort(data); H24ate?t,
insertSort(data); @g@fL %
} O c^6u
/** Rx@%cuP*
* @param data e<: 4czh8
*/ xCmI7$uQ#
private void insertSort(int[] data) { EhmUX@k],
int temp; s!nSE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F$"MFdc[
} N]O{T_5-0
} GN~[xXJU
} E@\d<c.
h^.tomg8
} X#f+m) S
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归并排序: r1^m#!=B
5bGjO&$l
package org.rut.util.algorithm.support; LZZ:P
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import org.rut.util.algorithm.SortUtil; l,^i5t'
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/** V'f&JQA
* @author treeroot VR5e CJ:i
* @since 2006-2-2 R
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* @version 1.0 [~Z'xY
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*/ Lk8W&|;0|
public class MergeSort implements SortUtil.Sort{ v"G%5pq*\
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/* (non-Javadoc) O,V6hU/ *
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }]Gi@Nh|o
*/ 76u/WC>B
public void sort(int[] data) { Bsih<`KF^
int[] temp=new int[data.length]; Mo?t[]L
mergeSort(data,temp,0,data.length-1); D-2v>l_
} Bp=oTCG
priT7!
private void mergeSort(int[] data,int[] temp,int l,int r){ <?=mLOo=
int mid=(l+r)/2; n'0$>Q
if(l==r) return ; 5pKvNLy.t
mergeSort(data,temp,l,mid); oZ\qT0*eb
mergeSort(data,temp,mid+1,r); kL2Zr
for(int i=l;i<=r;i++){ F'Y2f6B
temp=data; `lV
} 9FIe W[
int i1=l; ~T p8>bmSR
int i2=mid+1; f>"!-3
for(int cur=l;cur<=r;cur++){ :<WQ;q
if(i1==mid+1) I!soV0VU]
data[cur]=temp[i2++]; :+?W
else if(i2>r) yjM@/b
data[cur]=temp[i1++]; vS24;:f
else if(temp[i1] data[cur]=temp[i1++]; *]E7}bqb
else a|6x!p2X
data[cur]=temp[i2++]; TJ%]{%F
} q|]0on~]
} foP>w4pB
U_
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} ,SE$Rh
/v;)H#;
改进后的归并排序: #ejw@bd
4HJZ^bq9|
package org.rut.util.algorithm.support; +DbWMm
"o5gQTwb
import org.rut.util.algorithm.SortUtil; sP3.s_U^
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/** Uf2v$Jl+Yh
* @author treeroot L->f=
8L
* @since 2006-2-2 6E\\`FE4y
* @version 1.0 _c(C;s3o
*/ BJ.8OU*9]S
public class ImprovedMergeSort implements SortUtil.Sort { h<^:Nn
U<,Kw6K
private static final int THRESHOLD = 10; rO?x/{;ai
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/* +GPT:\*q6
* (non-Javadoc) ,;=( )-
* ;MRC~F=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
;~gd<KK
*/ jcv1z v.
public void sort(int[] data) { BtNW5'^
int[] temp=new int[data.length]; QSs$
mergeSort(data,temp,0,data.length-1); TXh@
} KZ<RDXV T
j~L1~@
private void mergeSort(int[] data, int[] temp, int l, int r) { %[\Ft
int i, j, k; x 1x j\O
int mid = (l + r) / 2; $qUta<o2@
if (l == r) \gI:`>-
x
return; &6^W%r
if ((mid - l) >= THRESHOLD) :2UC{_
mergeSort(data, temp, l, mid); b-(UsY:
else &fd4IO/O
insertSort(data, l, mid - l + 1); FskJyB[
if ((r - mid) > THRESHOLD) >eG&gc@$1$
mergeSort(data, temp, mid + 1, r); QY\wQjwuW
else D>7_P7]y
insertSort(data, mid + 1, r - mid); l;Wy,?p
,<P[CUD&&
for (i = l; i <= mid; i++) { *A1TDc$
temp = data; }jY[| >z
} #!d^3iB2
for (j = 1; j <= r - mid; j++) { R$;&O.
5M
temp[r - j + 1] = data[j + mid]; YT(1
"{:
} 9X{nJ"
int a = temp[l]; UK<DcM~n
int b = temp[r]; L5 k>;|SA
for (i = l, j = r, k = l; k <= r; k++) { (8-lDoW
if (a < b) { c>i*HN}Z|
data[k] = temp[i++]; `7qp\vYL
a = temp; r?yJ
} else { ;Y|~!%2~
data[k] = temp[j--]; t|U2ws#
b = temp[j]; QH' [(
} n\"LN3
} 7" STS7_
} {|J2clL
}
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/** :%b2;&A[
* @param data JTh=JHJ
* @param l z vylL
M
* @param i U1HD~
*/ 1DlcO>#@
private void insertSort(int[] data, int start, int len) { V-ouIqnI
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ExP25T
} j]l}K*8(
} Fee WZe0i
} )< a8a@
} aCi^^}!
pn%|;
堆排序: TX
[%s@C
^YJ^+:D(
package org.rut.util.algorithm.support; -b>O4_N
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import org.rut.util.algorithm.SortUtil; NDa|.,
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/** 8~Hs3\Hp
* @author treeroot 'kg]|"M
* @since 2006-2-2 S}[:;p?F`
* @version 1.0 (DMnwqr
*/ hUhp2ibEs
public class HeapSort implements SortUtil.Sort{ j% USu+&
8(/f!~
/* (non-Javadoc) = 4WZr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kmr
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*/ PM<LR?PLc
public void sort(int[] data) { U4L=3T+:[
MaxHeap h=new MaxHeap(); Qp{-!*
h.init(data); 6ym)F!t8l
for(int i=0;i h.remove(); |wb(rua
System.arraycopy(h.queue,1,data,0,data.length); ?| LB:8
} s1\BjSzk
MHyl=5
private static class MaxHeap{ 9c %Tv
^t
ldm7{_
void init(int[] data){ Bpo68%dx89
this.queue=new int[data.length+1]; Cl.T'A$
for(int i=0;i queue[++size]=data; |j}F$*SE[
fixUp(size); J$/BH\
} wBHDof
xX
} [gdPHXs
BI^]juH-c
private int size=0; Uu:v4a
jL%}y1m?
private int[] queue; 5_C#_=E
5t#]lg[06'
public int get() { GXlg%
return queue[1]; /P"\+Qp
} :QL p`s
pvU oed\
public void remove() { :Sn3|`HDm
SortUtil.swap(queue,1,size--); >@Vr'kg+V
fixDown(1); [=F
|^KL
} Jo$Dxa
z
file://fixdown ;/q6^Nk3A
private void fixDown(int k) { 6%INNIyAWa
int j; }Q^a.`h
while ((j = k << 1) <= size) { *>$)#?t
if (j < size %26amp;%26amp; queue[j] j++; &p4<@k\L
if (queue[k]>queue[j]) file://不用交换 AX RNV
break;
G5f57F
SortUtil.swap(queue,j,k); _:p_#3s$
k = j; }Y ];ccT
} tRBK1h
} l'%R^
private void fixUp(int k) { ^|;4/=bbs
while (k > 1) { '0$[Ujc
int j = k >> 1; }F`2$Q+CW
if (queue[j]>queue[k]) W*`6ero
break; pDq_nx9
SortUtil.swap(queue,j,k); &E`Z_}~
k = j; "$pgmf2
} U?j> 28
} K.1yncS^
slfVQ809
} (b}7Yb]#c
nnl9I4-O
} O~'yP@&`
J\D3fh97-
SortUtil: bu&y w~
z35Rjhj9
package org.rut.util.algorithm; $-fY 8V3[
1 ZFSz{
import org.rut.util.algorithm.support.BubbleSort; E"&9FxS]^
import org.rut.util.algorithm.support.HeapSort; jUSr t)o03
import org.rut.util.algorithm.support.ImprovedMergeSort; >!.9g
import org.rut.util.algorithm.support.ImprovedQuickSort; |bnjC $b *
import org.rut.util.algorithm.support.InsertSort; XqH<)B
]
import org.rut.util.algorithm.support.MergeSort; AK?j1Pk
import org.rut.util.algorithm.support.QuickSort; xU<lv{m`D
import org.rut.util.algorithm.support.SelectionSort; 7zZ|=W?&{
import org.rut.util.algorithm.support.ShellSort; :
X|7l?{xW
J3^Z PW
/** qJt gnk|
* @author treeroot |UO;StF
* @since 2006-2-2 lFY8^#@
* @version 1.0 A'(F%0NF6
*/ gSYX @'Q!
public class SortUtil { h18y?e7MU
public final static int INSERT = 1; U/o}{,$A
public final static int BUBBLE = 2; Nb/%>3O@
public final static int SELECTION = 3; i]?xM2(N
public final static int SHELL = 4; Rj`Y X0?+
public final static int QUICK = 5; S`w)b'B!M
public final static int IMPROVED_QUICK = 6; !PIdw~YC
public final static int MERGE = 7; <j3HT"^[D
public final static int IMPROVED_MERGE = 8; ye2Oh7
public final static int HEAP = 9; )1
j2
M6#(F7hB
public static void sort(int[] data) { 0M+tKFb
sort(data, IMPROVED_QUICK); In
M'zAhb
} %([H*sLX
private static String[] name={ rapca'
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j pv,0(
}; cSk}53
", )
private static Sort[] impl=new Sort[]{ mDfWR
new InsertSort(), cpnwx1q@
new BubbleSort(), ,m]q+7E
new SelectionSort(), X-FHJ4
new ShellSort(), #?6RoFgMe
new QuickSort(), ]!:Y]VYN)\
new ImprovedQuickSort(), rtE,SN
new MergeSort(), x)L@xQ
new ImprovedMergeSort(), IyP].g1"U
new HeapSort() X&Lt?e,&
}; J[wXG6M
NLY5L7
public static String toString(int algorithm){ u`|fmVI
return name[algorithm-1]; \]%U?`A
} Y&:i^k
3/FB>w gt
public static void sort(int[] data, int algorithm) { oD\+ 5[x
impl[algorithm-1].sort(data); @CF4:NNHw
} hhhO+D1(
e r$ 'c
public static interface Sort { GK&Dd"v
public void sort(int[] data); Dm#k-y
} p#2th`M:P1
Z-(HDn
public static void swap(int[] data, int i, int j) { P\e%8&_U/
int temp = data; >`'9V|1
data = data[j]; I#U44+c
data[j] = temp; :6V8
} Q>$L;1E*,
} ]EQ/*ct