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。 7+^4v(s
插入排序: -(YdK8
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package org.rut.util.algorithm.support; l#G }j^Q
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import org.rut.util.algorithm.SortUtil; 13:0%IO
/** 1F_ 1bAh$
* @author treeroot zPT!Fa`
* @since 2006-2-2 %xWscA%^u
* @version 1.0 mQ]wLPP{1
*/ L?(%
*
public class InsertSort implements SortUtil.Sort{ k1
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/* (non-Javadoc) .+TriPL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9QryW\6.@z
*/ 'L0{Ed+9
public void sort(int[] data) { Z/@%MEU[zl
int temp; (" +/ :
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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} >{]mN5
} l
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} %<Q?|}
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} 63?fn~0\
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冒泡排序: :,^pL At
q$=EUB"C
package org.rut.util.algorithm.support; >@o}l:*
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import org.rut.util.algorithm.SortUtil; 32*FI SH^
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/** #815h,nP+
* @author treeroot Rtl;*ZAS
* @since 2006-2-2 %Pb 5PIk4
* @version 1.0
*R6n+d
*/ (mJqI)m8
public class BubbleSort implements SortUtil.Sort{ H.ZmLB
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/* (non-Javadoc) F+@E6I'g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a+CHrnU\;
*/ 6T_Mk0Sf+
public void sort(int[] data) { buhn~ c
int temp; F"-w
for(int i=0;i for(int j=data.length-1;j>i;j--){ @9QtK69
if(data[j] SortUtil.swap(data,j,j-1); {A2SG#}
} 6*,8 H&
} sgn,]3AUq
} ]<;m;/H
} wZECG-jr/
b:}`O!UBw
} Z Tx~+'(
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选择排序: /WVnyz0
|WB<yA1
package org.rut.util.algorithm.support; MKdBqnM(F
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import org.rut.util.algorithm.SortUtil; t_q`wKDE
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/** QJ
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* @author treeroot <~}t;ji
* @since 2006-2-2 Ha\q}~_
* @version 1.0 {q1&4U~'>O
*/ S4]xxc
public class SelectionSort implements SortUtil.Sort { nr>g0_%m
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/* b-{\manH
* (non-Javadoc) L30x2\C
* KsGS s9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VX<ZB +R
*/ b+NF:-fO
public void sort(int[] data) { v?yH j-
int temp; )T:{(v7 d`
for (int i = 0; i < data.length; i++) { ]rDf3_!m(
int lowIndex = i; h@72eav3+
for (int j = data.length - 1; j > i; j--) { G^F4c{3c~
if (data[j] < data[lowIndex]) { FhZ&^.:
lowIndex = j; W9?Yzl
} l|ZwZix
} cK>5!2b
SortUtil.swap(data,i,lowIndex); NBR6$n
} 7;C9V`
} hltH{4
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} .BXZ\r`
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Shell排序: 'f<0&Ci8
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package org.rut.util.algorithm.support; k3[
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import org.rut.util.algorithm.SortUtil; _VR Sdr5
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/** ke~O+]
* @author treeroot _y)#N<
* @since 2006-2-2 mj<(qZh
* @version 1.0 {W}.z
*/ "JSg/optc
public class ShellSort implements SortUtil.Sort{ 7g5sJj
+V&b<y;?>
/* (non-Javadoc) ;0}$zy1EZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WZRrqrjq
*/ A~-e?.
public void sort(int[] data) { K$Y!d"D
for(int i=data.length/2;i>2;i/=2){ H!&]Di1Eh
for(int j=0;j insertSort(data,j,i); TeQWrms
} BpCzmU
} PDX^MYoN
insertSort(data,0,1); 9p(s FQ
[
} .*D~ .!
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/** KS'? DO
* @param data 4D[W;4/p
* @param j -)
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* @param i =4yME
*/ lMp)T**
private void insertSort(int[] data, int start, int inc) { -<}_K,Ky`
int temp; qSMSTmnQ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); El0|.dW
} Og%qv
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} K|Std)6
} /wI$}X5o~
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} 0<Px2/
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快速排序: Gy
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package org.rut.util.algorithm.support; -sGfpLy<6
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import org.rut.util.algorithm.SortUtil; 6ndt1W
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/** ,jbj-b(
* @author treeroot eqs.zL
* @since 2006-2-2 9<P1?Q
* @version 1.0 !3 $Ph
*/ k5=0L_xc
public class QuickSort implements SortUtil.Sort{ ,;H)CUe1"
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/* (non-Javadoc) ve=oH;zf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gs.id^Sf
*/ FbJlyWND
public void sort(int[] data) { +D`IcR-x
quickSort(data,0,data.length-1); "m _wYX
} c5<M=$
private void quickSort(int[] data,int i,int j){ g-meJhX%
int pivotIndex=(i+j)/2; Am!$\T%2
file://swap ~0|Hw.OK
SortUtil.swap(data,pivotIndex,j); ,#UaWq@7
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int k=partition(data,i-1,j,data[j]); (5;w^E9*n;
SortUtil.swap(data,k,j); 1Xt%O86
if((k-i)>1) quickSort(data,i,k-1); [$]vi`c2
if((j-k)>1) quickSort(data,k+1,j); d;9 X1`"
QOEcp% 6I}
} x g/3*rL
/** ?W9$=
* @param data AlIFTNg:"
* @param i ]k]P (w
* @param j lycY1 lK
* @return 6jiVz%`=Z
*/ 8"LvkN/v^
private int partition(int[] data, int l, int r,int pivot) { :u`
do{ \$V~kgQ0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z(aei(U=
SortUtil.swap(data,l,r); y0M^oLx
}
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while(l SortUtil.swap(data,l,r); ( m\PcF
return l; HzF
} B~V^?."
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} 7<mY{!2iF?
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改进后的快速排序: gsqlWfa
60*2k
package org.rut.util.algorithm.support; Aj;Z
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import org.rut.util.algorithm.SortUtil; G 2+A`\]
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/** 4H]Go~<
* @author treeroot Im+<oZ
* @since 2006-2-2 TPt<(-}W
* @version 1.0 /^G1wz2
*/ 6OF&Q`*4
public class ImprovedQuickSort implements SortUtil.Sort { AwAUm 2^
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private static int MAX_STACK_SIZE=4096; CQW#o_\
private static int THRESHOLD=10; {l%Of
/* (non-Javadoc) ,H2[["1DH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [:
*/ i!LEA/"V
public void sort(int[] data) { Z[RE|l{
int[] stack=new int[MAX_STACK_SIZE]; =[FNZ:3
200/
int top=-1; kKr7c4q
int pivot; y>3Zh5=
int pivotIndex,l,r; ;x$,x-
Jv %,v?
stack[++top]=0; \ty{KAc&
stack[++top]=data.length-1; b<P9@h~:
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while(top>0){ <[@AMd S
int j=stack[top--]; )/1AF^ E
int i=stack[top--]; >u
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pivotIndex=(i+j)/2; JQj?+PI
pivot=data[pivotIndex]; 4%LG Ph
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SortUtil.swap(data,pivotIndex,j); L%}k.)yev
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file://partition 5f(yF
l=i-1; SpU+y|\[0
r=j; Wl/oun~o
do{ ?{NP3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "-88bF~
SortUtil.swap(data,l,r); I} m\(TS-"
} Z,^`R] 9
while(l SortUtil.swap(data,l,r); OS;qb:;
SortUtil.swap(data,l,j); xeF0^p7Z
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if((l-i)>THRESHOLD){ \1cay#X
stack[++top]=i; ig5
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stack[++top]=l-1; 'G;y!<a
} 9E5Ec~l
if((j-l)>THRESHOLD){ 3gV
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stack[++top]=l+1; XZD9vFj1Z
stack[++top]=j; zePVB-@u
} 2a|9D\
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}:~Jy|
} FNL[6.!PV
file://new InsertSort().sort(data); ?{[ISk)
insertSort(data); M{cF14cQ
} k&wCa<Rs~R
/** Z0uo.
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* @param data }^U7NZn<"
*/ @iwVU]j
private void insertSort(int[] data) {
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int temp; g X75zso
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2fFZ70Yh
} n}/?nP\%
} Ezsb'cUa(
} 'APtY;x^{
bnHQvCO3$
} :>4pH
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归并排序: 1BK!<}yI{
h+=xG|1R[5
package org.rut.util.algorithm.support; v EppkS U1
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import org.rut.util.algorithm.SortUtil; Hvqvggfi
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/** fy]z<SPhVJ
* @author treeroot Bn:"qN~
* @since 2006-2-2 J<hqF4z
* @version 1.0 :/UO3 c(
*/ ko<u0SjF)u
public class MergeSort implements SortUtil.Sort{ }MQNzaXY^
ere h!
/* (non-Javadoc) &\tD$g~"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =h5&:?X
*/ g~EN3~
public void sort(int[] data) { 7X
4/6]*
int[] temp=new int[data.length]; s8BfOl-
mergeSort(data,temp,0,data.length-1); &CBW>*B
} >f+qImH
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private void mergeSort(int[] data,int[] temp,int l,int r){ WV5z~[
int mid=(l+r)/2; #J=^CE
if(l==r) return ; v~E\u
mergeSort(data,temp,l,mid); )S?. YCv?
mergeSort(data,temp,mid+1,r); 6d~[j<@2
for(int i=l;i<=r;i++){ N{+6 V`\
temp=data; :&Sv jJR
} p G|-<6WY
int i1=l; ~EIK
int i2=mid+1; z`g4 <
for(int cur=l;cur<=r;cur++){ V /i~IG`h/
if(i1==mid+1) cPaz-
data[cur]=temp[i2++]; 9dS <^E(ZF
else if(i2>r) cdd6*+E
data[cur]=temp[i1++]; 6sceymq
else if(temp[i1] data[cur]=temp[i1++]; p+x}$&<|
else 6=N!()s
data[cur]=temp[i2++]; RJ}%pA4I
} yM,.{m@F<
} .-ihxEbzr
qmmQHS
} ^.3(o{g
)<ig6b%
改进后的归并排序: U$,-F**
m[aBHA^g
package org.rut.util.algorithm.support; B:mtl?69g
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import org.rut.util.algorithm.SortUtil; +az=EF
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/** vciO={M
* @author treeroot d23;c )'
* @since 2006-2-2 aI. 5w9
* @version 1.0 Z7]["
*/ M=rH*w{^
public class ImprovedMergeSort implements SortUtil.Sort { <n4?wo
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private static final int THRESHOLD = 10; uuaoBf
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/* A4K8DP
* (non-Javadoc) y26?>.!
* gn-@OmIs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hl}iw_e
*/ 1&Z#$iD
public void sort(int[] data) { ] 6Y6q])Z
int[] temp=new int[data.length]; x)+ q$FB
mergeSort(data,temp,0,data.length-1); " fXs!
} N1D{ %
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private void mergeSort(int[] data, int[] temp, int l, int r) { pNFVa<D
int i, j, k; DhVO}g)2#
int mid = (l + r) / 2; q%S^3C&
if (l == r) aHR+4m~)
return; w;b;rHAZ\
if ((mid - l) >= THRESHOLD) (e"\%p`
mergeSort(data, temp, l, mid); P>}OwW
else bU4l|i;j
insertSort(data, l, mid - l + 1); %ztv.K(8
if ((r - mid) > THRESHOLD) ]0o_-
NI
mergeSort(data, temp, mid + 1, r); TI5<'
U)
else tD^$}u6
insertSort(data, mid + 1, r - mid); 0{^ 0>H0
qtR/K=^i
for (i = l; i <= mid; i++) { )U|0vr8:
temp = data; g:oB j6$
q
} j{$2.W$
for (j = 1; j <= r - mid; j++) { E"<-To
temp[r - j + 1] = data[j + mid]; <`)vp0
} 2#81oz&K
int a = temp[l]; ~J:qG9|]}
int b = temp[r]; zhZ!!b^6<
for (i = l, j = r, k = l; k <= r; k++) {
A)9F_;BY
if (a < b) { `g+Kv&546
data[k] = temp[i++]; rtxG-a56Q
a = temp; \yhj {QS.k
} else { 1xTNrLW
data[k] = temp[j--]; FZBdQhYF
b = temp[j]; % `\}#
} pqF!1
} P=<>H9p:o
} c BcZ@e;
STjk<DP(
/** yedEI[_4
* @param data dKpUw9C#/
* @param l xLShMv}
* @param i +\x}1bNS%j
*/ $y_P14
private void insertSort(int[] data, int start, int len) { 2{|mL`$04<
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C2;Hugm4
} Y3.^a5o
} /Ue_1Efa
} 3D-VePM=`
} &gdhq~4#
7Z<
2`&c7
堆排序: GZ1c~uAu
&{e:6t
package org.rut.util.algorithm.support; PfN[)s4F{R
':d9FzGKa
import org.rut.util.algorithm.SortUtil; cGM?r}zJ
YZy%]i=1
/** 2TccIv
* @author treeroot E#n=aY~u-
* @since 2006-2-2 /?%1;s:'
* @version 1.0
*v#Z/RrrA
*/ T+j-MR}{\
public class HeapSort implements SortUtil.Sort{ VQ7A"&hh
rI#,FZ
/* (non-Javadoc) cU_:l.b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) duV\Kt/g^
*/ 4?33t] "
public void sort(int[] data) {
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MaxHeap h=new MaxHeap(); '/F%
ff
h.init(data); 2-dEie/{'
for(int i=0;i h.remove(); ja&S^B^@
System.arraycopy(h.queue,1,data,0,data.length); /5Tp)h|
} PiJ>gDx
\C kb:
private static class MaxHeap{ M@ =VIrX,m
_/z3QG{Ea^
void init(int[] data){ Hrg -5_
this.queue=new int[data.length+1]; 19;Pjo8
for(int i=0;i queue[++size]=data; )mu[ye"p
fixUp(size); BIxjY!!"
} H;N6X y*~
} y:YJv x6&4
q0*d*j F0u
private int size=0; F;8Uvj
x31Jl{x8\?
private int[] queue; .23Yqr'zT
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public int get() { wBz5_ OFVw
return queue[1]; m't8\fo^w
} rm%MQmF
534DAhpD=.
public void remove() { ZC97Z sE
SortUtil.swap(queue,1,size--); cD'|zH]
fixDown(1); 8,L)=3m-
} 4W<8u(
file://fixdown 7OD2/{]5
private void fixDown(int k) { &?*H`5#?G
int j; i#I7ncX
while ((j = k << 1) <= size) { hQ}y(2A.XI
if (j < size %26amp;%26amp; queue[j] j++; TG6E^3a P
if (queue[k]>queue[j]) file://不用交换 Qe;R3D=T;
break; .R_-$/ZP
SortUtil.swap(queue,j,k); cH`ziZ<&m1
k = j; UIo jXR<
} )Ec /5=A
} E`#/m@:|-
private void fixUp(int k) { @n;$Edza/
while (k > 1) { jJ3dZ<#
int j = k >> 1; u}|+p +
if (queue[j]>queue[k]) ozkmZ;
break; |3C5"R3ZGO
SortUtil.swap(queue,j,k); W3A9uk6
k = j; 5@^['S4%8*
} @VyF'
?}
} E:[!)UG|y
5UX- Qqr
} Tq?f5swsI
mRN[lj
} tg<bVA)E'J
\\C!{}+
SortUtil: U*XdFH}vV
<[=[|DS l
package org.rut.util.algorithm; 8C*xrg#g:
sXYXBX[
import org.rut.util.algorithm.support.BubbleSort; 5C9
.h:c4y
import org.rut.util.algorithm.support.HeapSort; rS+ >oP}
import org.rut.util.algorithm.support.ImprovedMergeSort; "![KQ
import org.rut.util.algorithm.support.ImprovedQuickSort; uE>m3Y(aP
import org.rut.util.algorithm.support.InsertSort; TCi0]Y~a
import org.rut.util.algorithm.support.MergeSort; }%<cFi &
import org.rut.util.algorithm.support.QuickSort; -s^cy+jd
import org.rut.util.algorithm.support.SelectionSort; !uA'0U?ky
import org.rut.util.algorithm.support.ShellSort; c?6(mU\x
+~7[T/v+n
/** i_nUyH%b
* @author treeroot `%~f5<
* @since 2006-2-2 Z7 ++c<|p
* @version 1.0 b,47
EJ}
*/ 3TN'1D ei
public class SortUtil { Jg$ NYs.xZ
public final static int INSERT = 1; TN/&^/
public final static int BUBBLE = 2; e}s,WC2-
public final static int SELECTION = 3; -CALU X
public final static int SHELL = 4; F*Ul#yX
public final static int QUICK = 5; AjsjYThV
public final static int IMPROVED_QUICK = 6; CY"i|s
public final static int MERGE = 7; JB!*{{
public final static int IMPROVED_MERGE = 8; xXJzE|)1h!
public final static int HEAP = 9; M>i *e
4-9cp=\PE
public static void sort(int[] data) { sosIu
sort(data, IMPROVED_QUICK); kmt+E'^]
} B)dd6R>8
private static String[] name={ mS.!lkV
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" COd~H
}; -L2?Tap
U^-RyE!}
private static Sort[] impl=new Sort[]{ r
l;Y7l
new InsertSort(), COD^osM@
new BubbleSort(), 2\gbciJ[{(
new SelectionSort(), (~(FQ:L%U
new ShellSort(), swMR+F#u*
new QuickSort(), 89W8cJ$yW
new ImprovedQuickSort(), >n1UK5QD
new MergeSort(), |=W>4>
new ImprovedMergeSort(), [P]M)vJ**
new HeapSort() Q[lkhx|.B
}; yK mHTjX=
3Q,p,
public static String toString(int algorithm){ McN'J.Sxp
return name[algorithm-1]; Rli`]~!w
} #t
VGqf
9gZS)MZ
public static void sort(int[] data, int algorithm) { !_?HSDAj"n
impl[algorithm-1].sort(data); EPM(hxCIQ
} S-brV\v7
buHUBn[3)
public static interface Sort { !H @nAz
public void sort(int[] data); UaHN*@
} fUJe{C<H
5!6}g<z&L
public static void swap(int[] data, int i, int j) { Eb8z`@p
int temp = data; 5KssfI
a
data = data[j]; luz,z(
v
data[j] = temp; !m9g\8tE
} ~\zIb/ #
} _b
&Aa%