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。 V0{#q/q
插入排序: OKm,iIp]
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package org.rut.util.algorithm.support; mK$E&,OkA
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import org.rut.util.algorithm.SortUtil; !yj1X
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/** lHM}
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* @author treeroot XdThl
* @since 2006-2-2 % t,42jQ9
* @version 1.0 1lIs
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*/ USEmD5 q
public class InsertSort implements SortUtil.Sort{ &Qda|
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/* (non-Javadoc) PTe$dPB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MF.!D;s
*/ pSC{0Y$g
public void sort(int[] data) { "2%R?
int temp; "Cxj_V@\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5P #._Em
} -"ZNkC=
} cd,'37 pZ
} S+KKGi_e
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} ha|2u(4
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冒泡排序: %P1zb7:8
0y<9JvN$9
package org.rut.util.algorithm.support; gmu.8
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import org.rut.util.algorithm.SortUtil; )x[=}0C
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/** } %0w25
* @author treeroot JfJ ln[
* @since 2006-2-2 bZWR.</
* @version 1.0 E l.eK9L
*/ F !v01]O
public class BubbleSort implements SortUtil.Sort{ B YB9M
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/* (non-Javadoc) g- #eMQ%J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % O%;\t
*/ :FSg%IUX
public void sort(int[] data) { PNLlJlYlP
int temp; EX<1hAw
for(int i=0;i for(int j=data.length-1;j>i;j--){ :/?
Op
if(data[j] SortUtil.swap(data,j,j-1); G2[2y-Rv
} @:hWahMy
} }1CO>a<
} .wm<l:
} Gg6cjc =dC
ocW`sE?EED
} K'e!BZm6Q
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选择排序: b N>Ar
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package org.rut.util.algorithm.support; ;ACeY
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import org.rut.util.algorithm.SortUtil; gcX
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/** /Jk.b/t.*S
* @author treeroot *qMjoP,
* @since 2006-2-2 c$A}mL_
* @version 1.0 :i?c
*/ }?{. 'Hv0
public class SelectionSort implements SortUtil.Sort { Pd
6
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/* S9/\L6Rmf
* (non-Javadoc) Ej VB\6,
* A^c5CJ_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5U<o%+^El
*/ yCg>]6B
public void sort(int[] data) { 0XIrEwm@%
int temp; B;{sr'CP
for (int i = 0; i < data.length; i++) { Y u^ }
int lowIndex = i; =(k0^#++G
for (int j = data.length - 1; j > i; j--) { xi\uLu?i
if (data[j] < data[lowIndex]) { 10/3 -)+
lowIndex = j;
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} zgpPu4t
} H
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SortUtil.swap(data,i,lowIndex); }Ty_} 6a5
} \}qv}hU
} ;#"`]khd
zwHTtE
} JeCEj=_Z
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Shell排序: 7
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package org.rut.util.algorithm.support; *JOv
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import org.rut.util.algorithm.SortUtil; 4'; ['
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/** ')FNudsC
* @author treeroot
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* @since 2006-2-2 Kd,m;S\
* @version 1.0 r*3XM{bZ/@
*/ f%auz4CZz
public class ShellSort implements SortUtil.Sort{ CGg6n CB
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/* (non-Javadoc) QU4'x4YS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i|d41u;@
*/ p0YTZS ]h
public void sort(int[] data) { hQ8{
A7
for(int i=data.length/2;i>2;i/=2){ `RzM)ILl
for(int j=0;j insertSort(data,j,i); O 1X
!
} ,[hJi3xM
} XAFTLNV>
insertSort(data,0,1); -jw=Iyv
} #5I "M WA
:{6[U=O
/** 1-[{4{R
* @param data 3a S>U #
* @param j ?8nG F%p
* @param i Tuy*Df
*/ +[7u>RJ
private void insertSort(int[] data, int start, int inc) { ,?f(~<Aj
int temp; Y{'G2)e
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t2$:*PvE
} TPzoU"
qh
} Y+7v~/K=
} Zn!SHj
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} [6tQv<}^
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快速排序: lqs_7HhvRS
EkBM>*W
package org.rut.util.algorithm.support; (^4%Fk&I-
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import org.rut.util.algorithm.SortUtil; W2k~N X#@
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/** ?m.4f&X
* @author treeroot >j?uI6Uw
* @since 2006-2-2 o_5@R+&
* @version 1.0 5%$#3LT|
*/ G~Sfpf
public class QuickSort implements SortUtil.Sort{ /_|1,x-Kx
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/* (non-Javadoc) ZjK~s)RC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^s*} 0
*/ |"<
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public void sort(int[] data) { gr=`_k4~1
quickSort(data,0,data.length-1); 1DP)6{x
} F8I<4S
private void quickSort(int[] data,int i,int j){ `<n:D`{dZ
int pivotIndex=(i+j)/2; L9@jmh*E
file://swap aBnbu
vp
SortUtil.swap(data,pivotIndex,j); EUkNh>U?
:S12=sFl$
int k=partition(data,i-1,j,data[j]); \YS?}! 0
SortUtil.swap(data,k,j); Ul
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if((k-i)>1) quickSort(data,i,k-1); xTMTkVa+B
if((j-k)>1) quickSort(data,k+1,j); B .mV\W
h~p}08
} ?
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/** [
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* @param data pg)g&ifKl
* @param i KF)i66
* @param j @UJmbD{
* @return t^5_;sJQ
*/ b*KZe[#M1
private int partition(int[] data, int l, int r,int pivot) { CdO-xL6F
do{ ~@a
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -huZnDN
SortUtil.swap(data,l,r); }q W aE
} G65N:
while(l SortUtil.swap(data,l,r); ZZ*k3Ce
return l; `WS_*fJ5
} ;g
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} )g_zPt
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改进后的快速排序: /g''-yT7#
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package org.rut.util.algorithm.support; 1 ,'^BgI,
+hgCk87%#
import org.rut.util.algorithm.SortUtil; jqWvLBU!
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/** wtS*w
* @author treeroot >r3< O=Z7
* @since 2006-2-2 22~X~=
* @version 1.0 cV,Dl`1r
*/ ,
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public class ImprovedQuickSort implements SortUtil.Sort { lG>e6[Wc
#/<Y!qV&
private static int MAX_STACK_SIZE=4096; 8T
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private static int THRESHOLD=10; S=SncMO nE
/* (non-Javadoc) 5O
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $#3<rcOq
*/ l>Ja[`X@
public void sort(int[] data) { h\\2r>
int[] stack=new int[MAX_STACK_SIZE]; ~j#6 goKn
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int top=-1; ]},Q`n>$
int pivot; |S`yXsg
int pivotIndex,l,r; }IkEyJsk
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stack[++top]=0; .t[ZXrd|0
stack[++top]=data.length-1; C+m^Z[
+{i"G,3
while(top>0){ )h_7 2
int j=stack[top--]; wf<`J/7u
int i=stack[top--]; qZ_fQ@
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pivotIndex=(i+j)/2; ,xe@G)a
pivot=data[pivotIndex]; U{uWk3I_b
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SortUtil.swap(data,pivotIndex,j); r9a!,^}F
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file://partition uNZ>oP>
l=i-1; zn;Hs]G
r=j; Z6([/n
do{ ;4v}0N~.
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xc<eU`-'b
SortUtil.swap(data,l,r); .O%1)p
} r2F
while(l SortUtil.swap(data,l,r); ],}afa!A
SortUtil.swap(data,l,j); fQTA@WAr
<Bb<?7q$ld
if((l-i)>THRESHOLD){ lJ] \
stack[++top]=i; ecqz@*d&
stack[++top]=l-1; m/c&/6nk
} (6#yw`\
if((j-l)>THRESHOLD){ q|$>H6H4b
stack[++top]=l+1; pM'IQ3N
stack[++top]=j; FDd>(!>
} s!;VUr\
+V+*7s%fL
} kl3S~gE4@
file://new InsertSort().sort(data); .m]=JC5'
insertSort(data); BXK::M+
} 0.BUfuuh
/** *v
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* @param data 9<(K6Q
*/ :OQ:@Yk
private void insertSort(int[] data) { 4lh
int temp; e=n{f*KG`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U_}A{bFG
} 'D0X?2
} OBw`!G*w
} ldCKSWIi-
PZ!dn%4jy
} DYT -#Ht
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归并排序: qzHqj;
BheEI;}
package org.rut.util.algorithm.support; ^`jZKh8)h
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import org.rut.util.algorithm.SortUtil; ^0s\/qyqm
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/** :B*vkwT
* @author treeroot VTJIaqw
* @since 2006-2-2 yK&*,J
|
* @version 1.0 x'M^4{4[
*/ 8R)D ! 7[l
public class MergeSort implements SortUtil.Sort{ :<N6i/
orB8Q\p'
/* (non-Javadoc) r{q}f)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0 .FHdJ<
*/ %7NsBR!y
public void sort(int[] data) { ^)hAVf~E
int[] temp=new int[data.length]; kh<pLI >$h
mergeSort(data,temp,0,data.length-1); $/, BJ/9
} ib(>vp$V
L8bI0a]r"*
private void mergeSort(int[] data,int[] temp,int l,int r){ TDAWI_83-
int mid=(l+r)/2; Y(hW(bd;
if(l==r) return ; @ kJ0K
mergeSort(data,temp,l,mid); Z@uTkqG)
mergeSort(data,temp,mid+1,r); m1hW<
for(int i=l;i<=r;i++){ 2<[eD`u
temp=data; N;Z`%&
} pK6e/eC
int i1=l; /B,:<&_-
int i2=mid+1; 2ec$xms
for(int cur=l;cur<=r;cur++){ ySwYV
if(i1==mid+1) >:F,-cx<
data[cur]=temp[i2++]; XOysgX0g
else if(i2>r) 49+ >f
data[cur]=temp[i1++]; $=PWT-GIR
else if(temp[i1] data[cur]=temp[i1++]; p~Hvl3SxR
else k]SAJ~bS|
data[cur]=temp[i2++]; Dd!Sr8L[
} zU
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} 5:Yck<
-ajM5S=d*
} 5l41Q
E /fw?7eQ
改进后的归并排序: .O5LI35,
] vC=.&]
package org.rut.util.algorithm.support; ="uKWt6n'
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import org.rut.util.algorithm.SortUtil; _4P;+Y
s<A*[
/** ?mH@`c,fM
* @author treeroot )n\*ht7
* @since 2006-2-2 cPpu
* @version 1.0 nK+lE0
*/ r1i$D
public class ImprovedMergeSort implements SortUtil.Sort { [096CK
Gs[Vu@*
private static final int THRESHOLD = 10; 6(>3P
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/* 8AT;8I<K
* (non-Javadoc) puFXPw.3
* M'yO+bu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Ut6;
*/ mfXD1]<.
public void sort(int[] data) { TE3*ktB{N
int[] temp=new int[data.length]; 4\p$4Hs}
mergeSort(data,temp,0,data.length-1); :3JCvrq
} Vy]A,Rn7
9160L qY
private void mergeSort(int[] data, int[] temp, int l, int r) { K!GUv{fp
int i, j, k; &k1/Z*/
int mid = (l + r) / 2;
F[5S(7M
7
if (l == r) +H7y/#e+3
return; K}
+S+
*_
if ((mid - l) >= THRESHOLD) Vl<`|C>
mergeSort(data, temp, l, mid); vCj4;P g
else z1F9$^
insertSort(data, l, mid - l + 1); =M/qV
if ((r - mid) > THRESHOLD) &GuF\wJ{7
mergeSort(data, temp, mid + 1, r); C1 W>/?XC
else \I;cZ>{u"}
insertSort(data, mid + 1, r - mid); @|Dm E!)
/mc*Hc8R8
for (i = l; i <= mid; i++) { g^jJ8k,7(
temp = data; rsWQHHkO
} j~epbl)pC
for (j = 1; j <= r - mid; j++) { %*6RzJO6
temp[r - j + 1] = data[j + mid]; 6#E7!-u(-
} {gsW(T>)
int a = temp[l]; zhX;6= X2
int b = temp[r]; TFO74^
for (i = l, j = r, k = l; k <= r; k++) { (v!mR+\x
if (a < b) { 4Q;<Q"
data[k] = temp[i++]; mH)OB?+lq
a = temp; okz]Qc>G
} else { }t\
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data[k] = temp[j--]; "J& (:(:
b = temp[j]; PcB{=L
} N+NK`
} .3@Ng
} _lP4}9p
\#++s&06
/**
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* @param data uJY.5w
* @param l !Av1Leb9$
* @param i KY
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*/ OF8WDo`
private void insertSort(int[] data, int start, int len) { G?<pBMy
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^!}F%
} !lhFKb;
} Rboof`pVt
} Y%g "Y
} <(YF5Xm6$h
\45(#H<$
堆排序:
%}h`+L
b66R}=P l
package org.rut.util.algorithm.support; 0wFh%/:
A*F9\mjI5
import org.rut.util.algorithm.SortUtil; j=W@P-
WYLX?x
/** .E$q&7@/j
* @author treeroot ]G*$W+G]
* @since 2006-2-2 uoCGSXsi
* @version 1.0 +9zA^0
*/ g\&2s,
public class HeapSort implements SortUtil.Sort{ BFh$.+D
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/* (non-Javadoc) TEWAZVE*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hgO?+x
*/ 6V2j*J
public void sort(int[] data) { kOipH |.x
MaxHeap h=new MaxHeap(); t77'fm
h.init(data); tpo>1|
for(int i=0;i h.remove(); h<% U["
System.arraycopy(h.queue,1,data,0,data.length); F;kvH
} RZh}:
a#y{pT2 b
private static class MaxHeap{ XWtiwf'K
jDTUXwx7V
void init(int[] data){ 2ykCtRe
this.queue=new int[data.length+1]; GV8)Kor%
for(int i=0;i queue[++size]=data; _|<BF
fixUp(size); )GJP_*Ab
} $.:3$et@/
} J3B.-XJ+n
Uh}X<d/V
private int size=0; eYEc^nC,c)
%F J#uQXZ
private int[] queue; Pp*}R2
zvr\36
public int get() { KlUqoJ;"
return queue[1]; "2;N2=~7
} f#P_xn&et
]l[2hy=
cV
public void remove() { L~eAQR
SortUtil.swap(queue,1,size--); LgHJo-+>
fixDown(1); 2EfflZL3
} :woa&(wN;1
file://fixdown ;|TT(P:d
private void fixDown(int k) { (WE,dY+.
int j; *#2Rvt*Ox
while ((j = k << 1) <= size) { ><Uk*mwL
if (j < size %26amp;%26amp; queue[j] j++; "H1:0p
if (queue[k]>queue[j]) file://不用交换 [6RfS
break; <Tx C!{<
SortUtil.swap(queue,j,k); /6U
4S>'(
k = j; J#7y<
s
} K"l0w**Og#
} >}SRSqJu
private void fixUp(int k) { A*'V+(
while (k > 1) { L'9N9CR{i
int j = k >> 1; c_1/W{
if (queue[j]>queue[k]) T~s}N x#
break; J&6:d
SortUtil.swap(queue,j,k); 5f{|"LG&
k = j; CLN+I'uX0
} AyTx' u
} Z@J.1SaB
onl>54M^
} |Td5l?
%j{.0H
} .Z%G@X*
dWR1cvB(wY
SortUtil: Q%5F ]`VN
sR*Nq5F#9
package org.rut.util.algorithm; S()Za@ [a$
vv/J 5#^,\
import org.rut.util.algorithm.support.BubbleSort; ,
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import org.rut.util.algorithm.support.HeapSort; `="v>qN2\
import org.rut.util.algorithm.support.ImprovedMergeSort; ^?"^Pmw
import org.rut.util.algorithm.support.ImprovedQuickSort; (wA?;]q(
import org.rut.util.algorithm.support.InsertSort; ("Dv>&w9
import org.rut.util.algorithm.support.MergeSort; ]d'^Xs
import org.rut.util.algorithm.support.QuickSort; !R:y'Y%j
import org.rut.util.algorithm.support.SelectionSort; @]'SeiNp
import org.rut.util.algorithm.support.ShellSort; O9]\Q@M.
rsF:4G"%
/** JSW&rn
* @author treeroot Eark)
* @since 2006-2-2 #*,sa
* @version 1.0 zvf3b!}
*/ .JAcPyK^
public class SortUtil { O&$0&dhc
public final static int INSERT = 1; GLh]G(
public final static int BUBBLE = 2; X?dfcS*!n
public final static int SELECTION = 3; T1NH eH>
public final static int SHELL = 4; QN
G&
public final static int QUICK = 5; p4mY0Y]mP
public final static int IMPROVED_QUICK = 6; >XE`h9
public final static int MERGE = 7; DO^y;y>
public final static int IMPROVED_MERGE = 8; )HVcG0H1
public final static int HEAP = 9; {ZqQ!!b
Hed$ytMaGz
public static void sort(int[] data) { arj$dAW
sort(data, IMPROVED_QUICK); gdi`x|0
} "ahvNx;x
private static String[] name={ uec|S\~M
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uva\0q
}; #IX&9 aFB}
,")F[%v
private static Sort[] impl=new Sort[]{ IZ~.{UQ
new InsertSort(), >saI+u'o
new BubbleSort(), POGw`:)A
new SelectionSort(), `clB43i
new ShellSort(), 3k{ @.V?]
new QuickSort(), r/AHJU3&eY
new ImprovedQuickSort(), hKksVi
new MergeSort(), 2R`u[
new ImprovedMergeSort(), -P#nT 2
new HeapSort() \dV Too
}; kaFnw(xa
v*r9j8
public static String toString(int algorithm){ 0Hcbkep9D
return name[algorithm-1]; f z%tA39m
} [hU=mS8=^
SDc"
4g`
public static void sort(int[] data, int algorithm) { M 9"-WIG@h
impl[algorithm-1].sort(data); re uYTH
} ;0j*>fb\q7
Ae3,^
public static interface Sort { }m_t$aaUc1
public void sort(int[] data); Y/P]5: =h
} M=%!IT
:qnokrGzB
public static void swap(int[] data, int i, int j) { 'v`_Ii|-
int temp = data; vlQ0gsXK
data = data[j]; Zh,]J `
data[j] = temp; _,Q[2gQ5N
} d_T<5Hin
} k4R4YI"jV