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。 l\W[WQPh
插入排序: z}'*zB>
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package org.rut.util.algorithm.support; '-F
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import org.rut.util.algorithm.SortUtil; }.<%46_Z-
/** Ju$vuEO
* @author treeroot sa%2,e'
* @since 2006-2-2 D. 2HM
* @version 1.0 'kW' e
*/ z5CZ!"&v
public class InsertSort implements SortUtil.Sort{ :^mfTj$
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/* (non-Javadoc) |BD]K0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X!0s__IOc
*/ V~y4mpfX
public void sort(int[] data) { !=(~e':Gv
int temp; N@UO8'"9K&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 75`*aAZ3
} g)+45w*+5
} c43"o
} ?@
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} DCfV
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冒泡排序: EQ&E C
Y?Yix
package org.rut.util.algorithm.support; + >N/q(l
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import org.rut.util.algorithm.SortUtil; DiF=<} >x
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/** CtwMMZXX3
* @author treeroot |[x) %5F
* @since 2006-2-2 W! FmC$Kc
* @version 1.0 }Y(yDg;"
*/ 3Q^@!hu
public class BubbleSort implements SortUtil.Sort{ ?^9TtxM
``o:N`
/* (non-Javadoc) {5U;9: sO6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dq?q(_9
*/ U$KdY _Z97
public void sort(int[] data) { M>df7.N7%P
int temp; c?L_n=B
for(int i=0;i for(int j=data.length-1;j>i;j--){ X]q,A5g
if(data[j] SortUtil.swap(data,j,j-1); aTC7 H]e
} ap k06"/
} NfcQB;0
} MT" 2^&R
} {9KG06%+
e.eQZ5n~q`
} iulM8"P
yKEE @@}\
选择排序: KYY~ YP
v2 [
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package org.rut.util.algorithm.support; *B(na+
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import org.rut.util.algorithm.SortUtil; fG O.wb
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/** kWL\JDZ`.
* @author treeroot i*j[j~2>C;
* @since 2006-2-2 .Ev i
* @version 1.0 (6p5Fo
*/ j r6)K;:.
public class SelectionSort implements SortUtil.Sort { V|vU17Cgy
}pKHa'/\
/* DJlY~}v#_
* (non-Javadoc) /OaLkENgvf
* VmrW\rH@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 ="i'nYp
*/ a3]'%kKp
public void sort(int[] data) { 9PEjV$0E2
int temp; krm&.J
for (int i = 0; i < data.length; i++) { Ow=` tv$l
int lowIndex = i; )K\w0sjR
for (int j = data.length - 1; j > i; j--) { =
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if (data[j] < data[lowIndex]) { Y[x9c0
lowIndex = j; ['m@RJm+
} W&y%fd\&3
} VA_\Z
SortUtil.swap(data,i,lowIndex); w5|az6wZB!
} d|5u<f5
} XiI@Px?FL
pLL
^R
} Dq+rEt
67 >*AL
Shell排序: `':$PUz,g
s,ZJ?[/
package org.rut.util.algorithm.support; eFvw9B+
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import org.rut.util.algorithm.SortUtil; LjjE(Yrv{
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/** GOHRBV
* @author treeroot JI5?,
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* @since 2006-2-2 ^lB'7#7
* @version 1.0 XXacWdh \
*/ #X7fs5$&
public class ShellSort implements SortUtil.Sort{ &ZFsK c#
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/* (non-Javadoc) =kohQ d.n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xtN%v0ZZ
*/ v]gJ 7x
public void sort(int[] data) { P5Ms
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for(int i=data.length/2;i>2;i/=2){ a;m-Vu!
for(int j=0;j insertSort(data,j,i); &| el8;D
} H Kx2QFB
} d}%GHvOi
insertSort(data,0,1); +Ck<tx3h&
} GWRKiTu9
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/** NMmk,
* @param data _QfA'32S
* @param j
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* @param i {[o=df/
*/ xlkEW&N&
private void insertSort(int[] data, int start, int inc) { ^_KHw
int temp; <9YRSE[Ed
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3t[2Bd
} f&B&!&gZ
} U$6N-q
} w<N[K>
mZJ"e,AY
} hT9fqH
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快速排序: c3]ZU^
D_D<N(O
package org.rut.util.algorithm.support; X'e@(I!0
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import org.rut.util.algorithm.SortUtil; &H;0N"Fn
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/** ` :Am#"j]}
* @author treeroot Dms6"x2
* @since 2006-2-2 W1M<6T.{7
* @version 1.0 =:mD)oX*
*/ &%L1n?>Q}
public class QuickSort implements SortUtil.Sort{ ^rjICF e
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/* (non-Javadoc) *^ncb,1+i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &(-+?*A`E
*/ !6\{q
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public void sort(int[] data) { #-1 ;
quickSort(data,0,data.length-1); zn&NLsA
} qYZX,
x
private void quickSort(int[] data,int i,int j){ BftW<1,U^
int pivotIndex=(i+j)/2; 0J z'9
file://swap ` *x;&.&v
SortUtil.swap(data,pivotIndex,j); I/rq@27o
!.H< dQS
int k=partition(data,i-1,j,data[j]); $0V<wsVM
SortUtil.swap(data,k,j); O8TAc]B
if((k-i)>1) quickSort(data,i,k-1); ^k]OQc7q'
if((j-k)>1) quickSort(data,k+1,j); wqJ^tA!
3|-)]^1O
} gI6./;;x
/** p ElF,Y
* @param data D`,W1Z#
* @param i d%NO_=I.
* @param j 3i=+ [
* @return a,U[$c
*/ R8Nr3M9 )
private int partition(int[] data, int l, int r,int pivot) { _dVzvk`_R
do{ ?d0I*bs)7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J,%v`A ~N
SortUtil.swap(data,l,r); yYwZZa1
} fB|rW~!v
while(l SortUtil.swap(data,l,r); cU?A|'
return l; |E&a3TQW
} sL75C|f9
eaCv8zdX
} 1|l'oTAA
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改进后的快速排序: c#|!^gjf
TZT i:\nS
package org.rut.util.algorithm.support; i[sHPEml(5
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import org.rut.util.algorithm.SortUtil; m!SxX&m"G
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/** e<6fe-g9;
* @author treeroot <xOXuve
* @since 2006-2-2 ({i}EC7{
* @version 1.0 <43O,Kx'Su
*/ |jH-
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public class ImprovedQuickSort implements SortUtil.Sort { kL\
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private static int MAX_STACK_SIZE=4096; ?%dsY\
private static int THRESHOLD=10; ET;YAa*
/* (non-Javadoc) NK;%c-r0v7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~CCRs7V/L
*/ 1p=^I'#
public void sort(int[] data) { MdmS
int[] stack=new int[MAX_STACK_SIZE]; {.qeVE{
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int top=-1; n*{aN}auJ
int pivot; t Sran
int pivotIndex,l,r; 9`]Gosz
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stack[++top]=0; q">lP(t
stack[++top]=data.length-1; *UhYX)J
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while(top>0){ s9+Rq*Qd
int j=stack[top--]; 4<[,"<G~3
int i=stack[top--]; Vw:.'-Oi
=+;l>mn?O
pivotIndex=(i+j)/2; 8Y?zxmwn]
pivot=data[pivotIndex]; 2kb<;Eh`G
E j`
SortUtil.swap(data,pivotIndex,j); o|O730"2F
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file://partition j>Wb$p6S
l=i-1; |fqYMhA U
r=j;
2%P{fJbwd
do{ 0=O(+
yi
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wd*8w$\
SortUtil.swap(data,l,r); -d5b,leC^
} p)v|t/7
while(l SortUtil.swap(data,l,r); djJD'JL
SortUtil.swap(data,l,j); ?_)b[-N!
[Z9
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if((l-i)>THRESHOLD){ Tq{+9+
stack[++top]=i; (37dD!
stack[++top]=l-1; t 66Cx
} g<U\7Vp\1
if((j-l)>THRESHOLD){ YbAa@Sq@
stack[++top]=l+1; '/M9V{DD88
stack[++top]=j; Wd"<u2
} :0N}K}
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} -i93
file://new InsertSort().sort(data); (:Di/{i&r5
insertSort(data); 4A0
,N8ja}
} San3^uX
/** c
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* @param data %d?.v_Hu0
*/ mbT4K8<^
private void insertSort(int[] data) { XzLB#0
int temp; DS;,@$N_N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X<G"GaL
} fk%W07x!
} 1OI/!!t1$
} .5$"qb
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} TLu+5f
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归并排序: wO<.wPa`
]M3V]m
package org.rut.util.algorithm.support; y
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import org.rut.util.algorithm.SortUtil; k Il!n
x -;tV=E}
/** 5<64 C}fE3
* @author treeroot EPeKg{w
* @since 2006-2-2 |ppG*ee
* @version 1.0 "06t"u<%
*/ I;xSd.-
public class MergeSort implements SortUtil.Sort{ {:=sCY!
[}>!$::Y
/* (non-Javadoc) \dAs<${(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) suOWmqLs
*/ ,bTpD!
public void sort(int[] data) { /3Y\s&y
int[] temp=new int[data.length]; |k.%e4
mergeSort(data,temp,0,data.length-1); }ejZk
bP
} Xz,fjKUnN
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private void mergeSort(int[] data,int[] temp,int l,int r){ tuK2D,6
int mid=(l+r)/2; jD}G9=[$1
if(l==r) return ; wWkMvs
mergeSort(data,temp,l,mid); ?iXN..6x
mergeSort(data,temp,mid+1,r); 8MQb5( !
for(int i=l;i<=r;i++){ I9
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temp=data; i,V,0{$
} `;j@v8n$*
int i1=l; HQkK8'\LP
int i2=mid+1; 7l(GBr
for(int cur=l;cur<=r;cur++){ jw5ldC>U
if(i1==mid+1) 'G>$W+lT^
data[cur]=temp[i2++]; )kMF~S|H
else if(i2>r) 0RZ[]:(
data[cur]=temp[i1++]; Wn%b}{9Fb
else if(temp[i1] data[cur]=temp[i1++]; Cer&VMrQK
else = Ed0vw
data[cur]=temp[i2++]; mNA=<O;i)'
} ;yu#Bs
} J7;8
S
<uG6!P
} 5Z@0XI
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改进后的归并排序: ;kDUQw
\>$3'i=mQ
package org.rut.util.algorithm.support; rP{Jep!
v<3KxP'a
import org.rut.util.algorithm.SortUtil; =h\unQ1T
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/** c/DK31K
* @author treeroot Fy 1- >~
* @since 2006-2-2 &+5ij;AD
* @version 1.0 QYg V[\&
*/ b#nI#!p'
public class ImprovedMergeSort implements SortUtil.Sort { xyD2<?dGUb
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private static final int THRESHOLD = 10; ~ &<Ls
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/* $GR
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* (non-Javadoc) 9?iA~r|+
* 5szJ.!(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0%<OwA2d
*/ 6H1;Hl
f
public void sort(int[] data) { F| jl=i
int[] temp=new int[data.length]; l*.u rG
mergeSort(data,temp,0,data.length-1); KCIya[$*
} Y&<]:)
jiejs*
private void mergeSort(int[] data, int[] temp, int l, int r) { S6g_$Q7
int i, j, k; ?$K.*])e
int mid = (l + r) / 2; 9:E: 3%%
if (l == r) xtBu]I)%
return; ?W>`skQ
if ((mid - l) >= THRESHOLD) }K^v Ujl
mergeSort(data, temp, l, mid); IeZ9 "o h
else A$M8w9
insertSort(data, l, mid - l + 1); %*NED zy
if ((r - mid) > THRESHOLD) -7KoR}Ck!
mergeSort(data, temp, mid + 1, r); .?vHoNvo
else 8y']kVg
insertSort(data, mid + 1, r - mid); G?v!Uv8O
.07"I7
for (i = l; i <= mid; i++) { Aydpr_lp
temp = data; ;f~fGsH}e'
} %VGW]!QR
for (j = 1; j <= r - mid; j++) { *_Vv(H&
temp[r - j + 1] = data[j + mid]; C*}PL
} W#+f2 RR
int a = temp[l]; -2[#1S*
int b = temp[r]; eEBo:Rc9
for (i = l, j = r, k = l; k <= r; k++) { ?[uHRBR'
if (a < b) { C
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data[k] = temp[i++]; mW$Oi++'d
a = temp;
:R`e<g~4
} else { 5 JlgnxRq
data[k] = temp[j--]; mlxtey6H3
b = temp[j]; Y&1N*@YP
} 3G[|4v?[<_
} $ q*a}d[Q
} F$-f j "jC
t.+)g-X
/** #mU<]O
* @param data &b`'RZe
* @param l gnGh )
* @param i wfv\xHG
*/ jEE!H/
private void insertSort(int[] data, int start, int len) { k'_f?_PBu
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h% KEg667
} aAbA)'G
} ,]@K,|pC)
} t7xJ$^p[|K
} c`/VYgcTqB
soLW'8
堆排序: 2i0;b|-=
-wrVEH8
package org.rut.util.algorithm.support; Qd~z<U l
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import org.rut.util.algorithm.SortUtil; S6}_N/;6~
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/** x|yJCs>
* @author treeroot EjFn\|VK
* @since 2006-2-2 ",&QO7_
* @version 1.0 F b?^+V]9
*/ (3K3)0fy
public class HeapSort implements SortUtil.Sort{ &l0K~7)b
_|4R^*/4
/* (non-Javadoc) HE35QH@/`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nw\C+1F
*/ /7])]vZ_
public void sort(int[] data) { Ka6u*:/
MaxHeap h=new MaxHeap(); I`(53LCqo
h.init(data); 8{=|<
for(int i=0;i h.remove(); OPzudO
System.arraycopy(h.queue,1,data,0,data.length); 4D2U,Ds
} OX 'V
Y6&v&dA;
private static class MaxHeap{ 'YB[4Q /0
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void init(int[] data){ 2GORGS%
this.queue=new int[data.length+1]; (c)=Do=
for(int i=0;i queue[++size]=data; 8HFCmY#
fixUp(size); ?_FL
'G
} h]h"-3
} g5y`XFY
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private int size=0; 5q*s_acQ
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private int[] queue; JRi:MWR<r
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public int get() { YHO}z}f[!
return queue[1]; Zj!,3{jX^
} p@kRo#~l
$cIaLq
public void remove() { A"ATtid
SortUtil.swap(queue,1,size--); =y-yHRC7
fixDown(1); .SjJG67OyA
} F \ls]luN
file://fixdown ]:#=[CH
private void fixDown(int k) { J/jkb3
int j; \?]U*)B.r
while ((j = k << 1) <= size) { )2RRa^=&
if (j < size %26amp;%26amp; queue[j] j++; cz,QP'g
if (queue[k]>queue[j]) file://不用交换 ]7 Du/)$
break; Cyd/HTNh<
SortUtil.swap(queue,j,k); ]}PXN1(
k = j; pH mqwB~|
} ;YR/7
} Gn=b_!
private void fixUp(int k) { 4P[MkMoC
while (k > 1) { kBhjqI*
int j = k >> 1; e2v`
if (queue[j]>queue[k]) {daX?N|V
break; #%Bt!#
SortUtil.swap(queue,j,k); ?[d4HKs
k = j; >({qgzV`
} eJTU'aX*
} z`IW[N7Z
:Bmn<2[Y;
} [:{
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8 7(t<3V&
} {7ji m
A!Cby!,
SortUtil: !Pw*p*z
|J,zU6t
package org.rut.util.algorithm; aSvv(iV
!Z tqh Xr
import org.rut.util.algorithm.support.BubbleSort; 5PO_qr=Hx
import org.rut.util.algorithm.support.HeapSort; JyZuj>`
6
import org.rut.util.algorithm.support.ImprovedMergeSort; o *J*}y
import org.rut.util.algorithm.support.ImprovedQuickSort; #Z1-+X8P
import org.rut.util.algorithm.support.InsertSort; mA{?E9W
import org.rut.util.algorithm.support.MergeSort; udqrHR5
import org.rut.util.algorithm.support.QuickSort; TG}owG]]
import org.rut.util.algorithm.support.SelectionSort; y62f{ks_/
import org.rut.util.algorithm.support.ShellSort; ?)|}gr
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/** z
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* @author treeroot h40;Q<D
* @since 2006-2-2
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* @version 1.0 Q__CW5&'u
*/ {ogBoDS
public class SortUtil { uVUU1@
public final static int INSERT = 1; x6`mv8~9Db
public final static int BUBBLE = 2; HP.=6bJWi
public final static int SELECTION = 3; R>O_2`c
public final static int SHELL = 4; H[u9C:}9b
public final static int QUICK = 5; > O?WRCB
public final static int IMPROVED_QUICK = 6; `Y:]&w
public final static int MERGE = 7; PP$sdmo
public final static int IMPROVED_MERGE = 8; (M$0'BV0
public final static int HEAP = 9; s{@R|5
G<e+sDQ2
public static void sort(int[] data) { q13fmK(n-5
sort(data, IMPROVED_QUICK); 6?F88;L
} &N^~=y^`C'
private static String[] name={ 3_)I&RM
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" oj djy#:
}; A,.X
m"9f(
private static Sort[] impl=new Sort[]{ `f; w
new InsertSort(), (U.Go/A#wE
new BubbleSort(), ;|WUbc6&g
new SelectionSort(), OM[MRZEh G
new ShellSort(), D{N8q^Cs9
new QuickSort(), GK}52,NM
new ImprovedQuickSort(), M!J7Vj?Ps
new MergeSort(), +
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new ImprovedMergeSort(), p[C"K0>:_F
new HeapSort() G1 "QX
}; k`m7j[A]l
+r3)\L{U
public static String toString(int algorithm){ oIE
1j?
return name[algorithm-1]; {!|4JquE_
} 3[[oAp
DzGUKJh6
public static void sort(int[] data, int algorithm) { }_'5Vb_
impl[algorithm-1].sort(data); `[sFh%:
} *)Qv;'U=rn
Z6zV 9hn
public static interface Sort { @3?>[R
public void sort(int[] data); XL n9NBT4K
} ==[=Da~
mLuNl^)3
public static void swap(int[] data, int i, int j) { =sYILe[
int temp = data; U*[E+Uq}:N
data = data[j]; l1 Kv`v\
data[j] = temp; 0$)Q@#
} PyQ.B*JJ
} `3F#k[IR