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。 `?*%$>W#"
插入排序: (%CZ*L[9Z
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package org.rut.util.algorithm.support; "Y`3DxXz
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import org.rut.util.algorithm.SortUtil; wmNHT _
/** _s,ao'/
* @author treeroot wo2@hav
* @since 2006-2-2 `i,_aFB|
* @version 1.0 )|j[uh6wo
*/ ?B@;QjhjiJ
public class InsertSort implements SortUtil.Sort{ mN`YuR~
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/* (non-Javadoc) @ufo$?D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9DQ)cy
*/ TjWE_Bq]g
public void sort(int[] data) { DVZdClAL
int temp; >!e<}84b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c97{Pu
} uaw~r2
} ?[TfpAtQ`
} dCYCHHHF
9 A,Z|q/z5
} dBsX*}C
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冒泡排序: uy _wp^
cxeghy:;U
package org.rut.util.algorithm.support; 3:/'t{ ^B
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import org.rut.util.algorithm.SortUtil; gC%G;-gm
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/** ,y`CRlr:
* @author treeroot h<<>3 A
* @since 2006-2-2 #mR4fst
* @version 1.0 Mk<Vydds
*/ lLq<xf
public class BubbleSort implements SortUtil.Sort{ dhg~$CVO
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/* (non-Javadoc) BC>=B@H0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~na!@<zB{
*/ {yAL+}
public void sort(int[] data) { wCs^J48=
int temp; k;PAh>8
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2A`A\19t
if(data[j] SortUtil.swap(data,j,j-1); ^Jp&H\gI.
} @tohNO>
} 'XQ`g CF=
} <oKGD50#
} l}^3fQXI
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}
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选择排序: UEs7''6RM
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package org.rut.util.algorithm.support; ~fl@ 2
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import org.rut.util.algorithm.SortUtil; >%p{38
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/** hDP/JN8y
* @author treeroot c@[:V
* @since 2006-2-2 WtQ8X|\`
* @version 1.0 4EI7W,y
*/ gXT9 r' k
public class SelectionSort implements SortUtil.Sort { .xzEAu ;
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/* ?SQE5Z
* (non-Javadoc) |@?%Ct
* +cJy._pi!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :a8 YV!X
*/
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public void sort(int[] data) { 6%`&+Lq
int temp; 'C$XS>S
for (int i = 0; i < data.length; i++) { #1c]PX
int lowIndex = i; wHZW `
for (int j = data.length - 1; j > i; j--) { @Q&3L~K"
if (data[j] < data[lowIndex]) { I
+5)Jau^S
lowIndex = j; ~"pKe~h
} kh~'Cn "O
} Mwb/jTp
SortUtil.swap(data,i,lowIndex); r?m+.fJB
} ^L1L=c;,
} D.D$#O_n.S
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} \y6OUM2y
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Shell排序: .Xm(D>>k
rrg96WD
package org.rut.util.algorithm.support; J]W5[)L
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import org.rut.util.algorithm.SortUtil; o)6p A^+
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/** {l_{T4xToB
* @author treeroot NW~z&8L
* @since 2006-2-2 c,so`I3rI
* @version 1.0 -yxOBq
*/ ~pa!w?/bQ
public class ShellSort implements SortUtil.Sort{ o:Qv
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/* (non-Javadoc) d\e7,"L*Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A[G0 .>Wk
*/ d@w~[b
public void sort(int[] data) { yJuQ8+vgR}
for(int i=data.length/2;i>2;i/=2){ z"D.Bm~ ]
for(int j=0;j insertSort(data,j,i); %6Q4yk
} 3X9b2RY*L/
} b[z]CP
insertSort(data,0,1); PFUO8>!pA\
} }:: S0l
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/** PcB_oG g
* @param data f>BWG`
* @param j #T`t79*N
* @param i 8x`.26p
*/ xI,2LGO
private void insertSort(int[] data, int start, int inc) { ( mxT2"fC
int temp; sGvIXD
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q'pK,uNW
} pEECHk
} (R`B'OtGg
} r&-m=Kk$
Y`+=p@2O2o
} ,mRyQS'F
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快速排序: (F7(^.MG
j4=(H:c~E
package org.rut.util.algorithm.support; zf3v5Hk
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import org.rut.util.algorithm.SortUtil; 9nu3+.&P
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/** +C7 ~b~ %
* @author treeroot NM)k/?fA
* @since 2006-2-2 **69rN
* @version 1.0 3_JCU05H}
*/ TW !&p"Us+
public class QuickSort implements SortUtil.Sort{ (&$VxuJ+6y
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/* (non-Javadoc) cj11S>D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MX@IHc
*/ >#ZUfm{k$
public void sort(int[] data) { ^
9!!;)
quickSort(data,0,data.length-1); h|X^dQb]
} $ d?.2Kg
private void quickSort(int[] data,int i,int j){ ;?C#IU
int pivotIndex=(i+j)/2; KfF!{g f
file://swap >u9Nz0?j
SortUtil.swap(data,pivotIndex,j); Uye|9/w8 !
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int k=partition(data,i-1,j,data[j]); Bc3:}+l
SortUtil.swap(data,k,j); oyo(1>
if((k-i)>1) quickSort(data,i,k-1); !8`3GX:B_
if((j-k)>1) quickSort(data,k+1,j); SkU9ON
V I%
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} U]a*uF~h
/** ){jla,[
* @param data H@]MXP[_
* @param i mf'V)
* @param j /VG2.:
* @return [w ;kkMJAy
*/ \h8 <cTQ
private int partition(int[] data, int l, int r,int pivot) { <w3!!+oK"
do{ Z"unF9`"1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g^zs,4pPU<
SortUtil.swap(data,l,r); fhB}9i^]tg
} {v3P9s(
while(l SortUtil.swap(data,l,r); yDNOt C|
return l; HSq}7S&U
} k4 F"'N
Cu6%h>@K$
} $1SUU F\.
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改进后的快速排序: "Ks,kSEzu
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package org.rut.util.algorithm.support; ON+J>$[[
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import org.rut.util.algorithm.SortUtil; uslQ*7S[^
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/** XrZ*1V
* @author treeroot E!S 78z:
* @since 2006-2-2 hlt[\LP=$
* @version 1.0 -_$$Te
*/ (5\NB0
public class ImprovedQuickSort implements SortUtil.Sort { tDUwy^j
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X
private static int MAX_STACK_SIZE=4096; >LDhU%bH
private static int THRESHOLD=10; ?7{H|sI
/* (non-Javadoc) eF2|Wjl``;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qWb+r
*/ =*Bl|;>6
public void sort(int[] data) { /*0K92NB
int[] stack=new int[MAX_STACK_SIZE]; 7`u$
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int top=-1; 2;w*oop,O
int pivot; 5h; +Ky!I
int pivotIndex,l,r; ~Jf{4*>y
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stack[++top]=0; j&k6O1_
stack[++top]=data.length-1; 0Fu~%~#E$
4>J
while(top>0){ y+7PwBo%e
int j=stack[top--]; .YuJJJv
int i=stack[top--]; "Wx]RN:
~g.$|^,.O/
pivotIndex=(i+j)/2; 5xL~`-IA&v
pivot=data[pivotIndex]; 0Lb4'25.
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SortUtil.swap(data,pivotIndex,j); ({o'd=nO
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file://partition R4-~j gzx
l=i-1; QE7V.
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r=j; c*~]zR>s!
do{ 13Lr}M&
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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SortUtil.swap(data,l,r); 63A}TBC
} }u1O#L}F5
while(l SortUtil.swap(data,l,r); @e{^`\ l=<
SortUtil.swap(data,l,j); ^aW
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if((l-i)>THRESHOLD){ 0iJue&
stack[++top]=i; |ZQ@fmvL/p
stack[++top]=l-1; X]'7Ov
} aM;W$1h
if((j-l)>THRESHOLD){ ]LM-@G+Jz
stack[++top]=l+1; 7x<i :x3
stack[++top]=j; M'/aZ#
b
} {26ONa#i
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} ~zw]5|
file://new InsertSort().sort(data); 8,uB8C9
insertSort(data); A=
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} Si~vDQ7"
/** )RcL/n
* @param data ]~3U
*/ N;[>,0&z
private void insertSort(int[] data) { ccL~#c0P7
int temp; 3'X.}>o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h;0S%ZC
} /soKucN"h
} #BSTlz
} )(@Hd
7hcNf,
} /Ju;MeE9
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归并排序: 1m .W<
nqf,4MR
package org.rut.util.algorithm.support; Ox@P6|m
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import org.rut.util.algorithm.SortUtil; >
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/** {*ob_oc
* @author treeroot znHnVYll(
* @since 2006-2-2 y.q(vzg\_
* @version 1.0 x+]\1p
*/ QeK*j/
public class MergeSort implements SortUtil.Sort{ @62Mk},9 c
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/* (non-Javadoc) !3ctB3eJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Exk\8,EGqS
*/ $r3i2N-I
public void sort(int[] data) { \!ej<T+JR>
int[] temp=new int[data.length]; ^53r/V }%
mergeSort(data,temp,0,data.length-1); nak Yn
} ERN>don2
wT{nu[=GH*
private void mergeSort(int[] data,int[] temp,int l,int r){ LWt&3
int mid=(l+r)/2; c?@T1h4
if(l==r) return ; OiP!vn}k
mergeSort(data,temp,l,mid); n-@j5w+k4
mergeSort(data,temp,mid+1,r); u#@Q:tnN_
for(int i=l;i<=r;i++){ mbueP.q[?
temp=data; >&U,co$>
} RG4 sQ0
int i1=l; /7YF mI/0
int i2=mid+1; 9cj9SB4
for(int cur=l;cur<=r;cur++){ LA)[ip4
if(i1==mid+1) %?Ev|:i`@
data[cur]=temp[i2++]; qQH]`#P
else if(i2>r) @qHNE,K
data[cur]=temp[i1++]; 6!(@@^7{*
else if(temp[i1] data[cur]=temp[i1++]; ~b2wBs)r
else ,zT y?OQ
data[cur]=temp[i2++]; nxl[d\ap+n
} VZl6t;cn
} +) m_o"hl
.?hP7;hhI
} 1&U>,;]*
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改进后的归并排序: BGu?<bET
a 7,C>%I
package org.rut.util.algorithm.support; j ku}QM^
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import org.rut.util.algorithm.SortUtil; # m *J&
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/** LoGVwRmoC
* @author treeroot +PuPO9jKO@
* @since 2006-2-2 #&7}-"Nd
* @version 1.0 2m2;t0
*/ TG5XSy
public class ImprovedMergeSort implements SortUtil.Sort { P->y_4O
]: ~OG@(
private static final int THRESHOLD = 10; J":,Vd!*-
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/* 'u1?tQ=gmk
* (non-Javadoc) 6efnxxY}sa
* X7g1:L1Ys
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G"XVn~]
*/ v7`HQvQEz=
public void sort(int[] data) { d8x \
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); I=NZokfS
} xcf%KXJf6
oGRhnP'PF+
private void mergeSort(int[] data, int[] temp, int l, int r) { ,5*eX
int i, j, k; %$Aqle[
int mid = (l + r) / 2; $"H{4x`-
if (l == r) E 0?iXSJ
return; ])!o5`ltZ
if ((mid - l) >= THRESHOLD) ut I"\1hQ
mergeSort(data, temp, l, mid); Aj4T"^fv
else UTH_^HAN#G
insertSort(data, l, mid - l + 1); Sh8"F@P8
if ((r - mid) > THRESHOLD) "
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mergeSort(data, temp, mid + 1, r); ;hjwD
else CtS l
insertSort(data, mid + 1, r - mid); e;[F\ov%
Pw61_ZZ4B\
for (i = l; i <= mid; i++) { @ >U-t{W
temp = data; KSNPkd6
} N
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for (j = 1; j <= r - mid; j++) { H?X|(r|+
temp[r - j + 1] = data[j + mid]; <>aw
1WM+
} Q{lpKe0
int a = temp[l]; OUNd@o
int b = temp[r]; ^ cz(}N
6&
for (i = l, j = r, k = l; k <= r; k++) { t>$kWd{9e;
if (a < b) { [a
wjio
data[k] = temp[i++]; %eO0wa$a
a = temp; ]3l 9:|
} else { k>g_Z`%<
data[k] = temp[j--]; !GNBDRr
b = temp[j]; EG=Sl~~o
} H,u<|UMM_
} |VNnOM
} nPy$D-L,
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/** vG"=h%
* @param data uD@#
* @param l lH6OcD:kj
* @param i +P`*kj-P\
*/ e8#h3lxJ`
private void insertSort(int[] data, int start, int len) { Yd~X77cv
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); F ;2w1S^
} cj'}4(
} ]n~ilS.rkl
} ~"kb7Fxp
} Ot6aRk
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堆排序: aD$v2)RR
Nqa&_5"
package org.rut.util.algorithm.support; q;][5
:dQ B R
import org.rut.util.algorithm.SortUtil; /Y7<5!cS
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/** n74V|b6W
* @author treeroot ='Y!+
* @since 2006-2-2 zp%Cr.)$
* @version 1.0 TO?R({yx*
*/ "$N+"3I
public class HeapSort implements SortUtil.Sort{ Gf<'WQ[
Pf\D-1gi
/* (non-Javadoc) m4l&
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WL?\5?G9l
*/ rcC<Zat,|
public void sort(int[] data) { 2vWx)Drb6
MaxHeap h=new MaxHeap(); .Lsavpo
h.init(data); }%_ b$
for(int i=0;i h.remove(); \}"$ ?d'f
System.arraycopy(h.queue,1,data,0,data.length); 9|gr0~j
} 2h1vVF3
LH8 fBhw
private static class MaxHeap{ 'DL`Ee\
t? yz
void init(int[] data){ hUp.tK:X7o
this.queue=new int[data.length+1]; !FElW`F
for(int i=0;i queue[++size]=data; [k;\S XDZo
fixUp(size); w"cZHm
} IV\'e}
} %~2YE
g|vNhq0|i
private int size=0; zU
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private int[] queue; #\ X#w<\?
rp!oO>F
public int get() { 4hTMbS_;
return queue[1]; C,ARXW1
} \1fN0e
\b?" b
public void remove() { vnM@QfN
SortUtil.swap(queue,1,size--); rPLm5ni
fixDown(1); rLI8pA|.
} opy("qH
file://fixdown yl7&5)b#9
private void fixDown(int k) { I J(
int j; 8{^WY7.'
while ((j = k << 1) <= size) { %)/P^9I6
if (j < size %26amp;%26amp; queue[j] j++; ;kS&A(
if (queue[k]>queue[j]) file://不用交换 XH}\15X
break; |ZRagn30
SortUtil.swap(queue,j,k); 3W3ZjdV+
k = j; ?"i}^B`*
} ]v]qChZHd
} jU9$Ehg
I
private void fixUp(int k) { 34%RZG_o'
while (k > 1) { odjT:Vr
int j = k >> 1; ;7 E7!t^
if (queue[j]>queue[k]) CsoiyY -2
break; FrL]^59a
SortUtil.swap(queue,j,k); FtfKe"qw
k = j; -xEXN[\S
} %t" CX5n
} 7!EBH(,z
Vr^n1sgE}r
} 4{rZppm
S||}nJ0
} -- %N8L;e
kt["m.
SortUtil: M42Ssn)
U |Jo{(Y
package org.rut.util.algorithm; ZjQ
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s'E2P[:
import org.rut.util.algorithm.support.BubbleSort; 1DE<rKI
import org.rut.util.algorithm.support.HeapSort; lyy W
import org.rut.util.algorithm.support.ImprovedMergeSort; QgU8s'e
import org.rut.util.algorithm.support.ImprovedQuickSort; \eT5flC
import org.rut.util.algorithm.support.InsertSort; bzuEfFaL
import org.rut.util.algorithm.support.MergeSort; r^3acXl
import org.rut.util.algorithm.support.QuickSort; -EkWs/'h
import org.rut.util.algorithm.support.SelectionSort; 'B 43_
import org.rut.util.algorithm.support.ShellSort; GVYBa_gx
z$/_I0[
/** ;*:]*|bw
* @author treeroot f78An 8
* @since 2006-2-2 c#Sa]n
* @version 1.0 Lvq>v0|
*/ +;N2p1ZBf
public class SortUtil { VEqS;~[
public final static int INSERT = 1; bF"G[pD
public final static int BUBBLE = 2; %,6#2X nX%
public final static int SELECTION = 3; Sa?ksD2IaB
public final static int SHELL = 4; g*e
public final static int QUICK = 5; 7hlO#PYZ
public final static int IMPROVED_QUICK = 6; Jq&uF*!
public final static int MERGE = 7; i|w81p^o
public final static int IMPROVED_MERGE = 8; 9F)z4
public final static int HEAP = 9; J'SZ
4'g;TI^
public static void sort(int[] data) { wVicyiY]
sort(data, IMPROVED_QUICK); ;t<QTGJ
} z(_Ss@ $
private static String[] name={ 2jg-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P@$/P99
}; G7qG$wd8h
Xm%D><CC8"
private static Sort[] impl=new Sort[]{ C&*oI =6
new InsertSort(), VY;{/.Sa
new BubbleSort(), pQ=>.JU
new SelectionSort(), Y;@>b{s
new ShellSort(), 1zm ulj%&
new QuickSort(), Z~oo;xE
new ImprovedQuickSort(), 5iz{op<$,
new MergeSort(), 5!DBmAB
new ImprovedMergeSort(), wQP^WzNE
new HeapSort() >/kcdWl
}; uxtWybv
7n8~K3~;
public static String toString(int algorithm){ _=Z,E.EN
return name[algorithm-1]; Xjo5v*P u
} Rzbj
s>;v!^N?u
public static void sort(int[] data, int algorithm) { 4zev^FR
impl[algorithm-1].sort(data); bJRN;g
} 66/3|83Z
8+a4>8[M
public static interface Sort { s \;" X
public void sort(int[] data); \`oT#|0
} 0B@SN)<kH
/y _O4
public static void swap(int[] data, int i, int j) { %{AO+u2i
int temp = data; 01r 8$+
data = data[j]; 8$85^Of
data[j] = temp; zVXC1u9B
} Ir`eL
} /<@SFF.