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。 >tkz%;6
插入排序: (:]+IjnE
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package org.rut.util.algorithm.support; :^paI
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import org.rut.util.algorithm.SortUtil; 1.N2!:&G|
/** cBbumf 9C
* @author treeroot Xhyn! &H5
* @since 2006-2-2 Ttl
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* @version 1.0 }Z\S__\9
*/ }l} _'FmQ
public class InsertSort implements SortUtil.Sort{ <H#0pFB
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/* (non-Javadoc) V^!^wLLi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g9;s3qXiG
*/ ue?3;BF 5
public void sort(int[] data) { '
-9=>
int temp; }(DH_0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \N-3JO Vy
} 86cnEj=
} MSBrI3MqQ
} KSS]% 66Y
bLGC
} >hSu1s:
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冒泡排序: l{]KA4
6WIs*$T2*
package org.rut.util.algorithm.support; x)Zm5&"Gg
Qc!3y>Y=_
import org.rut.util.algorithm.SortUtil; =_j<x$,b-
\b6{u6?+
/** 1M_Vhs^
* @author treeroot (~bx %
* @since 2006-2-2 FG!hb?_1
* @version 1.0 EbX!;z
*/ NX8hFwR
public class BubbleSort implements SortUtil.Sort{ oC}
u
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/* (non-Javadoc) 0s{7=Ef
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4^YE*6z
*/ K1R?Qt,qDF
public void sort(int[] data) { ]9_}S
int temp; oD9L5c)
for(int i=0;i for(int j=data.length-1;j>i;j--){ yZm=#.f
if(data[j] SortUtil.swap(data,j,j-1); <s\ZqL$f
} d-m.aP)y:
} E`@Z9k1 `
} |'P$zMAF
} %,<Ki]F
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} Ac*J;fI
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选择排序: KZcmNli&A
QS\wtTXj
package org.rut.util.algorithm.support; d+5~^\lV
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import org.rut.util.algorithm.SortUtil; +?Cy8Ev?
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/** #pK"
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* @author treeroot P,3w
b
* @since 2006-2-2 lsOfpJ
* @version 1.0 v2:i'j6
*/ zA.0Sm
public class SelectionSort implements SortUtil.Sort { 3Z me?o*bY
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/* ;b1B*B
* (non-Javadoc) 79d(UG'O
* ,p(&G_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E'Ux2sh
*/
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public void sort(int[] data) { rMZuiRz*
int temp; "8cI]~V
for (int i = 0; i < data.length; i++) { mK"s*tD
int lowIndex = i; ~Fwbi
for (int j = data.length - 1; j > i; j--) { <LXx_{=:
if (data[j] < data[lowIndex]) { -MTYtw(
lowIndex = j; 1 0c.#9$
} RB% y($
} 3b]M\F9
SortUtil.swap(data,i,lowIndex); bJD$!*r\%!
} d(ypFd9z
} ybJ wFZ80
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} > l0H)W
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Shell排序: gM=:80
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package org.rut.util.algorithm.support; sO6=w%l^
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import org.rut.util.algorithm.SortUtil; 6},[HpXRc4
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/** PcU~1m1
* @author treeroot x(eX.>o\
* @since 2006-2-2
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* @version 1.0 Iapz,nuE
*/ /"j3B\`?
public class ShellSort implements SortUtil.Sort{ ty pbwfM]
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/* (non-Javadoc) 5~ :/%+F0=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )=29Hm"
*/ SZHgXl3:
public void sort(int[] data) { Km%L1Cd]
for(int i=data.length/2;i>2;i/=2){ >,]8iMh
for(int j=0;j insertSort(data,j,i); <EN9s
} 8j3Y&m4^
} )hj:Xpj9#
insertSort(data,0,1); _(kaa WJ
} 3Ioe#*5\
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/** Y-YuY
* @param data DyGls8<\!
* @param j tS]
* @param i z^Ikb(KC
*/ LjG^c>[:m
private void insertSort(int[] data, int start, int inc) { SFDTHvXu#_
int temp; cAEvv[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !+^'Ej)z
} _J W|3q
} 0C/ZcfFU~
} }>u `8'2v
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} g)#{<#*2
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快速排序: 6xJffl
L8PX SJ
package org.rut.util.algorithm.support; #H>{>0q
9 =;mY
import org.rut.util.algorithm.SortUtil; #T^2=7 w
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/** E3wL n/<
* @author treeroot 3 J04 $cD
* @since 2006-2-2 _2hLc\#
* @version 1.0 CG=c@-"n/
*/ FHSoj=
public class QuickSort implements SortUtil.Sort{ YoKyiO!
IFX$\+-
/* (non-Javadoc)
4F~^RR"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =W.}&
*/ V >'
public void sort(int[] data) { p1Zb&:+
quickSort(data,0,data.length-1); LJ(WU)CPc
} \7/yWd{N$
private void quickSort(int[] data,int i,int j){ ns8s2kYcm
int pivotIndex=(i+j)/2; ]19VEH
file://swap ?W'p&(;
SortUtil.swap(data,pivotIndex,j); &oS$<
k k3^m1
int k=partition(data,i-1,j,data[j]); E6A"Xo
SortUtil.swap(data,k,j); &&X,1/
if((k-i)>1) quickSort(data,i,k-1); S 13cQ?4
if((j-k)>1) quickSort(data,k+1,j); @%R<3!3v
Z nc(Q
} (hzN(Dh
/** // o.+?S
* @param data neDXzMxF
* @param i tF0jH+7J-
* @param j c~Ka) dF|
* @return aKbmj
*/ f
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private int partition(int[] data, int l, int r,int pivot) { 0Z9DewwP
do{ L8QWEFB|
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3yZmW$E.
SortUtil.swap(data,l,r); DYD<?._I
} l]R0r{{
while(l SortUtil.swap(data,l,r); zN4OrG0
return l; f&^(f1WO
} u]J@65~'b
h4?x_"V"
} e<L@QNX
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改进后的快速排序: x%G3L\5
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package org.rut.util.algorithm.support; ~7P)$[
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import org.rut.util.algorithm.SortUtil; fd\RS1[
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/** Eah6"j!B8n
* @author treeroot j9+$hu#a
* @since 2006-2-2 11[lc2
* @version 1.0 $cCC
1=dW
*/ _IYaMo.n
public class ImprovedQuickSort implements SortUtil.Sort { ~&?bU]F
UNdD2Fd9
private static int MAX_STACK_SIZE=4096; c3A\~tHW
private static int THRESHOLD=10; m~ tvuz I
/* (non-Javadoc) "F<CGSo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q+
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*/ *T|B'80
public void sort(int[] data) { <uH8Fivb
int[] stack=new int[MAX_STACK_SIZE]; z ^gJy,T
AlSO
int top=-1; P3$eomX'
int pivot; _'u]{X\k{J
int pivotIndex,l,r; XpIiJry!6
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stack[++top]=0; *Gbhk8}V'
stack[++top]=data.length-1; vJkc/7
&|>+LP@8
while(top>0){ U2oCSo5:3N
int j=stack[top--]; &1xCPKIr
int i=stack[top--]; }I"C4'(a
@fL ^I&++
pivotIndex=(i+j)/2; mo0\t#jA
pivot=data[pivotIndex]; n/H
OP
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SortUtil.swap(data,pivotIndex,j); @=Kq99=\U
IUcL*
file://partition 5jdZC(q5a
l=i-1; ErN[maix#
r=j; J
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do{ 2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gvVy0nJI~
SortUtil.swap(data,l,r); =Vh]{y~$
} JKKp5~_~
while(l SortUtil.swap(data,l,r); $%U}k=-
SortUtil.swap(data,l,j); 2k!uk6
l>jrY1u
if((l-i)>THRESHOLD){ Q3=X#FQ
stack[++top]=i; .0nT*LF
stack[++top]=l-1; 9u~C?w
} '3XOU.
if((j-l)>THRESHOLD){ -0uGzd+m*
stack[++top]=l+1; r
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stack[++top]=j;
||2%N/?
} f$</BND
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} (9bU\4F\
file://new InsertSort().sort(data); .KYs5Qu
insertSort(data); vkLt#yj~
} 0gyvRM@ x[
/** Zy Df@(z`
* @param data Q3r]T.].h
*/ /&?ei*z
private void insertSort(int[] data) { 2C0j.Ib
int temp; 0r@LA|P
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D _\HX9
} zt((TD2
} c[1{>z{G
} ?n<sN"
b`wT*&
} **AJFc
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归并排序: 6o#J
qoan<z7
package org.rut.util.algorithm.support; m:EYOe,w
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import org.rut.util.algorithm.SortUtil; T5@t_D>8
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/** WnQ'I=E#~
* @author treeroot AED
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* @since 2006-2-2 ?h7[^sxJ
* @version 1.0 HVC|0}
*/ M/[9ZgDc
public class MergeSort implements SortUtil.Sort{ "{{@N4^
5W{|?l{
/* (non-Javadoc) 54JI/!a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {YzpYc1
*/ Z,3CMWHg
public void sort(int[] data) { #.j:P#
int[] temp=new int[data.length]; qyIy xJ
mergeSort(data,temp,0,data.length-1); d76C]R5L
} .<P@6Jq
Xp^>SSt:4
private void mergeSort(int[] data,int[] temp,int l,int r){ +'e3YF+'
int mid=(l+r)/2; 'u[cT$
if(l==r) return ; /Wjf"dG}
mergeSort(data,temp,l,mid); @S012} xH
mergeSort(data,temp,mid+1,r); H]lD*3b
for(int i=l;i<=r;i++){ Mf:x9#
temp=data; TI'~K}Te
} 51%<N\>/4
int i1=l; B@3>_};Ct
int i2=mid+1; _*(:6,8
for(int cur=l;cur<=r;cur++){ Z}O0DfT;
if(i1==mid+1) =2wy;@f
data[cur]=temp[i2++]; Zfr?(y+3
else if(i2>r) X<"#=u(
data[cur]=temp[i1++]; TwE&5F*
else if(temp[i1] data[cur]=temp[i1++]; qr/N ?,
else c_2kHT
data[cur]=temp[i2++]; !I8(Y
} k|^nrjStC
} !91<K{#A{
%hzNkyD)Y
} wa9{Q}wSa
X?"Ro`S
改进后的归并排序: CV,[x[L#{
-aMwC5iR@
package org.rut.util.algorithm.support; \-s'H:
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import org.rut.util.algorithm.SortUtil; yIThzyS
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/** xZ"kJ'C4}
* @author treeroot HaamLu
* @since 2006-2-2 yYTiAvN
* @version 1.0 T1b9Zqc)f
*/ -1u N
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public class ImprovedMergeSort implements SortUtil.Sort { seH#v
0:Lm=9o
private static final int THRESHOLD = 10; l:kF0tj"
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0
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/* I1(,J
* (non-Javadoc) )6mv7M{
* mE]W#?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,
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*/ :XZ
public void sort(int[] data) { K`1\3J)
int[] temp=new int[data.length]; ~F]- +|
mergeSort(data,temp,0,data.length-1); Om2
)$(
} "|"bo5M:
MgLz:2
:F
private void mergeSort(int[] data, int[] temp, int l, int r) { M+^+u 1QQ0
int i, j, k; *K\/5Fzl
int mid = (l + r) / 2; 7<?v!vQ}-
if (l == r) |v{a5|<E
return; >b/0i$8
if ((mid - l) >= THRESHOLD) Rf\>bI<.
mergeSort(data, temp, l, mid); c>3W1"
else Hp":r%)
insertSort(data, l, mid - l + 1); .Isg1qrC
if ((r - mid) > THRESHOLD) uoKC+8GA
mergeSort(data, temp, mid + 1, r); 6i\b&
else @*l}2W
insertSort(data, mid + 1, r - mid); 66%kq[
_W*3FH
for (i = l; i <= mid; i++) { Fk
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temp = data; PHD$E s
} 0:nQGX!N
for (j = 1; j <= r - mid; j++) { v *~ yN*
temp[r - j + 1] = data[j + mid]; ]}G(@9
} crC];LMl/
int a = temp[l]; ?(U>
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int b = temp[r]; Hj;j\R >2
for (i = l, j = r, k = l; k <= r; k++) { J2H8r 'T
if (a < b) { KFC zf_P!
data[k] = temp[i++]; f5/ba9nI
a = temp; 'F[Q E9]*
} else { t/S~CIA
data[k] = temp[j--]; nS'0i&<{1
b = temp[j]; "$:nz}
} K#";!
} Ef$xum{
} )CXJRo`j0
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/** bU:"dqRm<
* @param data XUUS N
* @param l T0RgCU
IV
* @param i F+L q
*/ Mk[_yqoCO
private void insertSort(int[] data, int start, int len) { z6FG^
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8X*6i-j5E
} A"z')
} [N#2uo
} Yq)
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} (g~&$&pa
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堆排序: +5);"71
HcQ{ok9u
package org.rut.util.algorithm.support; 4U>
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import org.rut.util.algorithm.SortUtil; bUz7!M$
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/** "PJ@Q9n__
* @author treeroot xp>ra2A
* @since 2006-2-2 2lHJ&fck<
* @version 1.0 2f I?P
*/ O&\;BF5:R
public class HeapSort implements SortUtil.Sort{ UTmX"Li
+l&ZN\@0X
/* (non-Javadoc) ]eP&r?B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4(
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*/ P*R`3Y,
public void sort(int[] data) { P",~8Aci(
MaxHeap h=new MaxHeap(); v*l1"0$
h.init(data); ep,kImT
for(int i=0;i h.remove(); Scs \nF2
System.arraycopy(h.queue,1,data,0,data.length); a{69JY5
} i~.L{K
A^
t[PKM"
private static class MaxHeap{ QSEf
0 Co_,"
void init(int[] data){ U{n
0Z
this.queue=new int[data.length+1]; -5d8j<,
for(int i=0;i queue[++size]=data; f#/v^Ql*
fixUp(size); FrB}2
} JyYg)f
} Z]":xl\7
m_Z%[@L
private int size=0; p?=rQte([
tX&Dum $
private int[] queue; KS1Z&~4
x(5>f9b b
public int get() { z9YC9m)jK
return queue[1]; 6
}qNH29
} Nx;U]O6A
avykg(
public void remove() { W<u63P
SortUtil.swap(queue,1,size--); \qi=Us|=
fixDown(1); _)zSjFX9
} ZVVK:dDgt
file://fixdown j!qO[CJJ
private void fixDown(int k) { W !2(Ph*
int j; Pfe&wA't
while ((j = k << 1) <= size) { S;MS,R
if (j < size %26amp;%26amp; queue[j] j++; g
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if (queue[k]>queue[j]) file://不用交换 QrHI}r
break; S3`zB?7,
SortUtil.swap(queue,j,k);
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k = j; `\(Fax
} |u<qbl
} j{0_K+B
private void fixUp(int k) { h~urZXD<
while (k > 1) { k6QQoLb$V
int j = k >> 1; +kd88Fx
if (queue[j]>queue[k]) oXK`=.\
break; J}hi)k
SortUtil.swap(queue,j,k); `BmAu[(e&
k = j; b-@6w(j
} lnEc5J@c>i
} Gyw@+(l
,Si\ky7L
} q<>LK
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8?B
} c1'OIK C
iXqc$!lTH
SortUtil: bBW(#
Q_a
l=`)yc.
package org.rut.util.algorithm; @c,}\"(
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import org.rut.util.algorithm.support.BubbleSort; Pv1C o:
import org.rut.util.algorithm.support.HeapSort; xiX~*Zs
import org.rut.util.algorithm.support.ImprovedMergeSort; &$.Vi&{.
import org.rut.util.algorithm.support.ImprovedQuickSort; &%ej=O
import org.rut.util.algorithm.support.InsertSort; $M@SZknm
import org.rut.util.algorithm.support.MergeSort; @f{yx\u/
import org.rut.util.algorithm.support.QuickSort; {
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import org.rut.util.algorithm.support.SelectionSort; eOt T*
import org.rut.util.algorithm.support.ShellSort; vtc} )s\
^VR1whCrx
/** U{q6_z|c
* @author treeroot \O/EY&
* @since 2006-2-2
? }|;ai
* @version 1.0 is}o5\JEL
*/ :W_S
public class SortUtil { IpXg2QbN
public final static int INSERT = 1; Sd2R$r
public final static int BUBBLE = 2; yb2*K+Kv
public final static int SELECTION = 3; VjS %!P
public final static int SHELL = 4; wO@b=1j
public final static int QUICK = 5; l!ltgj
public final static int IMPROVED_QUICK = 6; ,--/oP
public final static int MERGE = 7; D9B?9Qt2[
public final static int IMPROVED_MERGE = 8; /ZlW9|
public final static int HEAP = 9; N#Bg`:!
<T[%03
public static void sort(int[] data) { a5{CkM&,(
sort(data, IMPROVED_QUICK); 2lDgvug
} *,-)4)7d
private static String[] name={ Xw!eB?A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W@GcE;#-
}; JAj<*TB.%
U5jY/e_
private static Sort[] impl=new Sort[]{ AMA:hQ
new InsertSort(), Ih!UL:Ckh
new BubbleSort(), BP6;dF5E
new SelectionSort(), PorBB7iL
new ShellSort(), KOv
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new QuickSort(), )zlksF
new ImprovedQuickSort(), 2/RK
pl &
new MergeSort(), lb2mWsg"
new ImprovedMergeSort(), P1]ucu_y,
new HeapSort() KYD,eVQ
}; ;XSRG*3j~4
?|Fu^eR%X
public static String toString(int algorithm){ R!lNm,i
return name[algorithm-1]; 9-eYCg7C|
} zNuiBLxDs
@g(N!n~
public static void sort(int[] data, int algorithm) { &NZN_%
impl[algorithm-1].sort(data); n=MdbY/k(
} {g@Wd2-J}
Gy.<gyK9
public static interface Sort { [4]lAxrRF
public void sort(int[] data); {H#1wu^]O$
} S&}7jRH1
"Y}f"X|
public static void swap(int[] data, int i, int j) { }OJ*o
int temp = data; m>k
j @^SQ
data = data[j]; >~_y\
data[j] = temp; CTp~bGIv!=
} $TU=^W)X
} 6_=qpP-?