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。 qk!,:T
插入排序: WVh]<?GWXk
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package org.rut.util.algorithm.support; ZrDr/Q~
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import org.rut.util.algorithm.SortUtil; F3<Ip~K
/** lBOxB/`
* @author treeroot ?xzDz
* @since 2006-2-2 NE-c[|rq
* @version 1.0 42,K8
*/ cu"ge]},
public class InsertSort implements SortUtil.Sort{ Wvwjj~HP2}
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/* (non-Javadoc) 3>G"&T{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =E:a\r
*/ wL"
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public void sort(int[] data) { >Gr,!yP
int temp; =~{W;VZt'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h2ou ]
} cK1RmL"3
} cAzlkh
} QPp>%iE@
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} <l^#FH
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冒泡排序: 4XArpKA
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package org.rut.util.algorithm.support; 8fQaMn4V
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import org.rut.util.algorithm.SortUtil; 3 bll9Ey
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/** "$N 4S9U
* @author treeroot =}YaV@g<f
* @since 2006-2-2 &,iPI2`O A
* @version 1.0 "o$)z'q
*/ k3r<']S^
public class BubbleSort implements SortUtil.Sort{ (:ij'Zbz
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/* (non-Javadoc) ~DUOL~E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~X1<x4P\
*/ ^97\TmzP{
public void sort(int[] data) { r[ RO"Ej"
int temp; U7d05y'
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2B=+p83<
if(data[j] SortUtil.swap(data,j,j-1); {#}?-X
} S)G*+)
} <+e&E9;>6
} -5Ln3\ O@
} 7B#HF?,?
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} &8QkGUbS<
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选择排序: H4g1@[{|0O
1_G5uHO
package org.rut.util.algorithm.support; zZ{(7Kfz
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import org.rut.util.algorithm.SortUtil; NIxtT>[+3
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/** qc@v"pIz'S
* @author treeroot bn0Rv
* @since 2006-2-2 aq%i:};
* @version 1.0 (t2vt[A6ph
*/ )TyI~5>;
public class SelectionSort implements SortUtil.Sort { 1F94e)M)"
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/* 84M*)cKR~
* (non-Javadoc) WOuk>
/
* $1;@@LSw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Gk#2
*/ \xexl1_;
public void sort(int[] data) { _f<#+*y
int temp; mA0|W#NB
for (int i = 0; i < data.length; i++) { -3&mgd
int lowIndex = i; </)QCl' d
for (int j = data.length - 1; j > i; j--) { wVtBH_>
if (data[j] < data[lowIndex]) { lyQNE3
lowIndex = j; ueV,p?Wo
} 3\&I7o3V
} g2W ZW#a)
SortUtil.swap(data,i,lowIndex); 7?"-NrW~
} S]}W+BF3
} 2U`g[1
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} SoL"M[O
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Shell排序: Q@? {|7:
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package org.rut.util.algorithm.support; q;H5S<]/
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import org.rut.util.algorithm.SortUtil; O(YvE
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/** `& }C*i"
* @author treeroot }-15^2
* @since 2006-2-2 JzuP AI
* @version 1.0 5r(Y,m"?
*/
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public class ShellSort implements SortUtil.Sort{ H4JwgQ
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/* (non-Javadoc) IltU6=]"l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jK-usn
*/ @sLB
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public void sort(int[] data) { K8g9IZ*lT
for(int i=data.length/2;i>2;i/=2){ QN OA66
for(int j=0;j insertSort(data,j,i); K{[N.dX(
} Xo~kB)|,
} pQ9~^
insertSort(data,0,1); A!fRpN
} TrmrA$5f
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/** <<[\
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* @param data -JfO} DRI
* @param j [eO6H2@=z
* @param i XZ[3v9?&n
*/ MFO1v%m
private void insertSort(int[] data, int start, int inc) { >19j_[n@VC
int temp; V( SRw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); l6k.`1.In
} N2e]S8-
} `*HM5 1U
} (`FY{]Wz!
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} b{hdEb
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快速排序: C{P:1ELYXH
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package org.rut.util.algorithm.support; $>!tpJw
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import org.rut.util.algorithm.SortUtil; vN3uLz'<
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/** ]sG^a7Z.X
* @author treeroot |^$?9Dn9.L
* @since 2006-2-2 j<C p&}X
* @version 1.0 Sx}61 ?
*/ 40R7@Vaf
public class QuickSort implements SortUtil.Sort{ *-.,QpgTX
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/* (non-Javadoc) S7WT`2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,G!mO,DX
*/ x|q|> dPB
public void sort(int[] data) { T~b6Zu6
quickSort(data,0,data.length-1); ~k780
} %P`w"H,v3#
private void quickSort(int[] data,int i,int j){ |&0zAP"\
int pivotIndex=(i+j)/2; =%oQIx
file://swap T@\%h8@~]
SortUtil.swap(data,pivotIndex,j); I18<brZJ
9Jj:d)E>o
int k=partition(data,i-1,j,data[j]); i!dQ
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SortUtil.swap(data,k,j); ".Sa[A;~
if((k-i)>1) quickSort(data,i,k-1); 1]]#HTwX
if((j-k)>1) quickSort(data,k+1,j); i :Sih"=
El4SL'E@
} BhC>G2 ^7
/** P1A5Qq
* @param data e]@R'oM?#`
* @param i w^wh|'u^_@
* @param j @bO/5"X,
* @return Y!w {,\3
*/ fi;00>y
private int partition(int[] data, int l, int r,int pivot) { Tg\wBhJr|
do{ dId&tTMmC
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `sPH7^R
SortUtil.swap(data,l,r); Rg6/6/ IN
} _1kcz]]F
while(l SortUtil.swap(data,l,r); gzeTBlXg
return l; Lm"zW>v
} /aX5G
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} U<jAZU[L
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改进后的快速排序: ?)L X4GY
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package org.rut.util.algorithm.support; w~l%xiC
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import org.rut.util.algorithm.SortUtil; S^*ME*DDz
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/** ERZWK
* @author treeroot d<+@cf_9
* @since 2006-2-2 {&d )O
* @version 1.0 `;\~$^sj}
*/ ]0@
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public class ImprovedQuickSort implements SortUtil.Sort { lz88//@gZ
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private static int MAX_STACK_SIZE=4096; .U9A\$
private static int THRESHOLD=10; J'#R9NO<
/* (non-Javadoc) vD'YLn%Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qF57T>v|
*/ )9'Zb`n
public void sort(int[] data) { PWbi`qF)r
int[] stack=new int[MAX_STACK_SIZE]; N,~"8YSo
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int top=-1; 3?:?dy(3z
int pivot; <`WtP+`
int pivotIndex,l,r; #8;#)q_[u
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stack[++top]=0; ".:]?Lvt
stack[++top]=data.length-1; URb
[&h%T;!Qii
while(top>0){ g&`[r6B
int j=stack[top--]; :elTqw>pn
int i=stack[top--]; kQQhZ8Ch
/Vy,6:$H3
pivotIndex=(i+j)/2; &L`yX/N2
pivot=data[pivotIndex]; Fooa~C"
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SortUtil.swap(data,pivotIndex,j); y~/i{a;1y
[y(AdZ0*
file://partition X Cf!xIv
l=i-1; 0|D
l/1
r=j; e=Teq~K
do{ $ Ov#^wfA
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %^
g(2^
SortUtil.swap(data,l,r); ; 6*Ag#Z
} JDj^7\`
while(l SortUtil.swap(data,l,r); $3D#U^7i
SortUtil.swap(data,l,j); Bn?MlG;aA
AB")aX2%E
if((l-i)>THRESHOLD){ SlojB ^%
stack[++top]=i; V^ 5Z9!
stack[++top]=l-1; w;(B4^?
} kV:C=MLI
if((j-l)>THRESHOLD){ 5KvqZ1L
stack[++top]=l+1; 2z615?2_U
stack[++top]=j; #uillSV
} DY6ra% T
11jDAA(|
} \(a!U,]LM
file://new InsertSort().sort(data); tFKR~?Gc
insertSort(data); &j_:VP
} #7yy7Y5
/** AagWswv{Bf
* @param data 8j<+ '
R
*/ 9o|#R&0
private void insertSort(int[] data) { QQIU5
int temp; :dkBr@u96O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k>mqKzT0$+
} CKgbb4;<m[
} -|x YT+?%
} 3&ES?MyB#
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} ;$>wuc'L
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归并排序: gP 6`q
#RWH k
package org.rut.util.algorithm.support; rm nfyn
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import org.rut.util.algorithm.SortUtil; Zk#?.z}
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/** ;?'=*+'>
* @author treeroot o YNp0Hc
* @since 2006-2-2 $dgez#TPL
* @version 1.0 .?CumaU
*/ ps=+wg?]
public class MergeSort implements SortUtil.Sort{ 6h_OxO&!U
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/* (non-Javadoc) $,L,VYN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JU\wvP5j
*/ jXALN
public void sort(int[] data) { qtLXdSc
int[] temp=new int[data.length]; jYi{[**
mergeSort(data,temp,0,data.length-1); iJD_qhd7
} 6*r3T:u3
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private void mergeSort(int[] data,int[] temp,int l,int r){ {P>%l\?
int mid=(l+r)/2; XOi[[G}
if(l==r) return ; m"RE[dQ
mergeSort(data,temp,l,mid); >iIUS
mergeSort(data,temp,mid+1,r); ":upo/xN
for(int i=l;i<=r;i++){ L.M|o
temp=data; q\gvX
76a
} ZRr S""V
int i1=l; 875BD U
int i2=mid+1; '#faNVPABh
for(int cur=l;cur<=r;cur++){ 0;pO QF
if(i1==mid+1) ^S'tMT_
data[cur]=temp[i2++]; GY;q0oQ,
else if(i2>r) 7TN94@kCF
data[cur]=temp[i1++]; t4E=
else if(temp[i1] data[cur]=temp[i1++]; N2_9V~!
else YDMimis\H5
data[cur]=temp[i2++]; baVSQtda
} J)xc mK
} l-mf~{
<DjFMTCN
} ,J0BG0jB^u
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改进后的归并排序: 4;hgi[
sXaIQhZ
package org.rut.util.algorithm.support; rtM!|apr
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import org.rut.util.algorithm.SortUtil; =z$XqT.'
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/** zz+p6`
* @author treeroot ;Pi-H,1b
* @since 2006-2-2 Sn lKPd
* @version 1.0 A/4HR]
*/ P,[O32i#
public class ImprovedMergeSort implements SortUtil.Sort { 1TvR-.e
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private static final int THRESHOLD = 10; P95A_(T=[
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/* @Ja8~5 :
* (non-Javadoc) VY9|8g/
* u< ,c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q/,jv5
*/ 79 svlq=
public void sort(int[] data) { W l+[{#
int[] temp=new int[data.length]; uKcwVEu
mergeSort(data,temp,0,data.length-1); uM^eoh_
} m% {4
1E*No1
private void mergeSort(int[] data, int[] temp, int l, int r) { 0`
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int i, j, k; ~KufSt*
int mid = (l + r) / 2; .#]
V5g,
if (l == r) R""P01IZH
return; oVLgH B\zL
if ((mid - l) >= THRESHOLD) :OVre*j
mergeSort(data, temp, l, mid); =a<};X
else &l=%*`On
insertSort(data, l, mid - l + 1); M=hH:[6 &
if ((r - mid) > THRESHOLD) E .kjYIH8
mergeSort(data, temp, mid + 1, r); uWYI p\NN
else s2{d<0x?v
insertSort(data, mid + 1, r - mid); ?1?zmaS
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for (i = l; i <= mid; i++) { `KgWaf-
temp = data; R`F54?th
} HCI|6{k
for (j = 1; j <= r - mid; j++) { xnW3,:0
temp[r - j + 1] = data[j + mid]; \p-3P)U
} |@x^5Ab$T
int a = temp[l]; 0
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int b = temp[r]; |-HV@c]
for (i = l, j = r, k = l; k <= r; k++) { {1Z`'.FU
if (a < b) { YFVNkBO%
data[k] = temp[i++]; ^0/FZ)V8
a = temp; +%'S>g0W=
} else { p. eq
N
data[k] = temp[j--]; 3+_
.I{
b = temp[j]; cGhnI&
} ,{HxX0
} :[1^IH(sb
} )5}=^aqd
t}zffe-
/** +h}>UK\
* @param data /R@,c
B=
* @param l GnlP#;
* @param i }hralef #N
*/ UvSvgDMl
private void insertSort(int[] data, int start, int len) { )")_aA
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gNdEPaaFI
} G`B e~NU
} ;/
iBP2
} [4NJ]r M%
} FYI*44E
9 wun$!>&
堆排序: =kz(1Pb
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package org.rut.util.algorithm.support; i(^&ZmG
kCXQHX
import org.rut.util.algorithm.SortUtil; :1q)l
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/** 2F0@M|'
* @author treeroot W0X/&v,k*
* @since 2006-2-2 {8)Pke
* @version 1.0 8\?7k
*/ z+K -aj w
public class HeapSort implements SortUtil.Sort{ i NX%Zk[
h01 HX
/* (non-Javadoc) Fb&Xy{kt1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c/Fy1Lv\
*/ l,n0=Ew
public void sort(int[] data) { jP?YV
MaxHeap h=new MaxHeap(); T5; zgr
h.init(data); )~{T
for(int i=0;i h.remove(); QxRT%;'Zh]
System.arraycopy(h.queue,1,data,0,data.length); g\CRx^s
} ~C1lbn b
i`3h\ku
private static class MaxHeap{ `ZCeuOH
^ lrq`1k
void init(int[] data){ (!72Eaw:]
this.queue=new int[data.length+1]; .E'Tfa
for(int i=0;i queue[++size]=data; CdCo+U5z{
fixUp(size); B{UL(6\B
} sb Wn1 T
U
} 9`P<|(
Gkz\By
private int size=0; >h^CC*&'pw
u^DfRd&P0
private int[] queue; LUGyc( h
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public int get() { :DI``]Si\
return queue[1]; _MF:?p,l
} 3*< O-Jr
#k%$A}9
public void remove() { &cDLSnR
SortUtil.swap(queue,1,size--); Hc`)Q vFRW
fixDown(1); EwvW: t1
} 4~mYj@lvd
file://fixdown WmO.&zp
private void fixDown(int k) { )-D{]>8
int j; _4eSDO[h
while ((j = k << 1) <= size) { !c}?u_Z/
if (j < size %26amp;%26amp; queue[j] j++; .<0|V
if (queue[k]>queue[j]) file://不用交换 |'$E-[
break; Tm!pAD
SortUtil.swap(queue,j,k); P9Yee!*H
k = j; CH!>RRF
} S$ u`)BG):
} Wpgp YcPS
private void fixUp(int k) { HeV6=
while (k > 1) { @>>8CU^~
int j = k >> 1; Y?ADM(j
if (queue[j]>queue[k])
+#%#QL
break; BE`{? -G
SortUtil.swap(queue,j,k); eI?|Ps{S
k = j; [1+ o
} [BPK0
} 4R 9lA
`/W6,]
} v|IPus|>
_Xs(3V@'}
} Q"o* \I
Z>0a?=1[
SortUtil: &J>XKO nl
%N jRD|
package org.rut.util.algorithm; tM&O<6Y
]>j>bHG
import org.rut.util.algorithm.support.BubbleSort; OVwcjhQ
import org.rut.util.algorithm.support.HeapSort; /y8=r"'G
import org.rut.util.algorithm.support.ImprovedMergeSort; #~3$4j2U(y
import org.rut.util.algorithm.support.ImprovedQuickSort; iME)Jl&
import org.rut.util.algorithm.support.InsertSort; h(M_
K
import org.rut.util.algorithm.support.MergeSort; ^^q9+0@
import org.rut.util.algorithm.support.QuickSort; #%Z 0!
import org.rut.util.algorithm.support.SelectionSort; 3X&'hz@
import org.rut.util.algorithm.support.ShellSort; O!uZykdX4!
K fM6(f:
/** GyirE`
* @author treeroot BHmmvbM#Qm
* @since 2006-2-2 qDG{hvl[1r
* @version 1.0 Pu|PIdu!08
*/ (R'GrN>
public class SortUtil { mEL<d,XhI
public final static int INSERT = 1; 29a~B<e7s
public final static int BUBBLE = 2; Ptt
public final static int SELECTION = 3; (d9G`
public final static int SHELL = 4; 54X=58Q
public final static int QUICK = 5; 7T\LYDT
public final static int IMPROVED_QUICK = 6; gu~JB
public final static int MERGE = 7; %Aqt0e
public final static int IMPROVED_MERGE = 8; b-)m'B}`
public final static int HEAP = 9; HuVx^y`
@
p$5uS=:4`8
public static void sort(int[] data) { Ly\ `
sort(data, IMPROVED_QUICK); 8i
epG
} @fI1|v=eF
private static String[] name={ T^z
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B^7B-RBi0
}; I_?+;<n
)6~s;y!
private static Sort[] impl=new Sort[]{ [h5~1N
new InsertSort(), fGZZ['E
new BubbleSort(), m`;dFL7"E
new SelectionSort(), (]_smsok
new ShellSort(), UF_?T.Rl^
new QuickSort(), dBWi1vTF
new ImprovedQuickSort(), D)O2=aQ;]
new MergeSort(), p`+=)
n
new ImprovedMergeSort(), [8kufMY|
new HeapSort() 'P AIh*qA
}; !6`pq
n]%T>\gw
public static String toString(int algorithm){ 5`_UIYcI
return name[algorithm-1]; ''Pu
} U4$}8~o4
Jw+k=>
public static void sort(int[] data, int algorithm) { tv]^k]n{rf
impl[algorithm-1].sort(data); (h8RthQt
} Ihn#GzM?u
U"qR6
public static interface Sort { QIK;kjr*A3
public void sort(int[] data); %qycxEVP
} i?HN
{wp~
public static void swap(int[] data, int i, int j) { +hIC N,8!
int temp = data; eNHSfq
data = data[j]; !#NGGIp;
data[j] = temp; EDDld6O,
} ;bYpMcH
} hL?"!