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。 oy=js -
插入排序: kk@fL
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package org.rut.util.algorithm.support; 8@Q$'TT6}
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import org.rut.util.algorithm.SortUtil; C.yQ=\U2
/** HGs $*
* @author treeroot @/.;Xw]
* @since 2006-2-2 6+|do+0Icg
* @version 1.0 ColV8oVnU
*/ TH&U
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public class InsertSort implements SortUtil.Sort{ _Xc8Yg }`
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/* (non-Javadoc) jh%Eq+#S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x(6SG+Kr
*/ Smn;(K
public void sort(int[] data) { A@[o;H}XP
int temp; @ $ ;q;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]d0BN`*U.
} ^R7lom.
} ]Idk:et
} :'-/NtV)o?
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} ^e _hLX\SW
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冒泡排序: wr/"yQA]
qZtzO2Mt
package org.rut.util.algorithm.support; !mJ"gg
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import org.rut.util.algorithm.SortUtil; P6-s0]-g
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/** l'-Bu(
* @author treeroot qFCOUl
* @since 2006-2-2 %9F([K
* @version 1.0 vjGo;+K
*/ |O\s|H
public class BubbleSort implements SortUtil.Sort{ iAEbu&XG
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/* (non-Javadoc) :Uzm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M#4pE_G
*/ )9{0]u;9
public void sort(int[] data) { \^J%sf${
int temp; (&F}/s gbi
for(int i=0;i for(int j=data.length-1;j>i;j--){ XH 4
if(data[j] SortUtil.swap(data,j,j-1); %+W{iu[|
} r1`x=r
} |P
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} f;o5=)Y
} eCU:Q
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} _ @NL;w:!
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选择排序: GX!G>
s^G.]%iU
package org.rut.util.algorithm.support; A@!qv#'
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import org.rut.util.algorithm.SortUtil; n?!">G
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/** C\Wmq
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* @author treeroot }_M~2L?i
* @since 2006-2-2 ~ ?Qe?hB
* @version 1.0 9iIhte.
*/ Z*]9E^
public class SelectionSort implements SortUtil.Sort { 8yR.uMI$/
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/* Db}j?ik/
* (non-Javadoc) ;40/yl3r3[
* Fx_z 6a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sk<3`x+
*/ |PCm01NU!
public void sort(int[] data) { )np:lL$$
int temp; :1.L}4"gg
for (int i = 0; i < data.length; i++) { shy-Gu&
int lowIndex = i; v!-/&}W)1
for (int j = data.length - 1; j > i; j--) { 36&e.3/#
if (data[j] < data[lowIndex]) { 1Ti f{i,B
lowIndex = j; +aCv&sg
} w>s,"2&5J
} .GPT!lDc
SortUtil.swap(data,i,lowIndex); YNyk1cE
} b5dD/-Vj
} ` xEx^P^7
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} g#pr yYz
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Shell排序: ?DS@e@lx
fM :]&
package org.rut.util.algorithm.support; (?1y4M
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import org.rut.util.algorithm.SortUtil; %ufN8w!p
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/** t:x\kp
* @author treeroot
,h m\
* @since 2006-2-2 YlJ@XpKM
* @version 1.0 lV3x *4O=
*/ e{'BAj
public class ShellSort implements SortUtil.Sort{ Fc)@,/R"v
2G& a{
/* (non-Javadoc) d=$Mim
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z!a=dnwHz
*/ ~k-y &<UR
public void sort(int[] data) { T*/rySs
for(int i=data.length/2;i>2;i/=2){ XB;7!8|
for(int j=0;j insertSort(data,j,i); 6m/r+?'
} U/66L+1
} xf\ C|@i
insertSort(data,0,1); J\}twYty
} I;,77PxD
eH'av}
/** 3)t.p>VgO
* @param data Fj 8z
* @param j P-9)38`5
* @param i kr^P6}'
*/ \"w"$9o6
private void insertSort(int[] data, int start, int inc) { T$)^gHS
int temp; r..iko]T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *2>&"B09`
} ;>U2|>5V
} '2A)}uR
} 3V+] 9;
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3
} !]A
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快速排序: ('4_
xOb
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package org.rut.util.algorithm.support; k{R>
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import org.rut.util.algorithm.SortUtil; p;`>e>$
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/** L Tm2G4+]
* @author treeroot R"/GQ`^AqA
* @since 2006-2-2 5 9
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* @version 1.0 {Y(zd[
*/ yM6pd U]i
public class QuickSort implements SortUtil.Sort{ n K1Slg#U
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/* (non-Javadoc) a Yg6H2Un
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1sy[@Q2b
*/ G{As,`{
public void sort(int[] data) { ih-#5M@
quickSort(data,0,data.length-1); gMi0FO'
} ]\-A;}\e
private void quickSort(int[] data,int i,int j){ ch*8B(:
int pivotIndex=(i+j)/2; &@X<zWg
file://swap p%up)]?0
SortUtil.swap(data,pivotIndex,j); Pa>AWOG'
\i>?q
int k=partition(data,i-1,j,data[j]); Fk&c=V;SU
SortUtil.swap(data,k,j); \Gef \
if((k-i)>1) quickSort(data,i,k-1); /*(Kr'c
if((j-k)>1) quickSort(data,k+1,j); 5ORo3T%
} ?$F}s-
} E<rp7~#
/** ;}I:\P
* @param data '0;l]/i.
* @param i ^ox=HNV
* @param j @Z_x.Y6
* @return 0Uz"^xO["
*/ >.Pnkx*
private int partition(int[] data, int l, int r,int pivot) { L8@f-Kk
do{ c`)\Pb/O
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); etQCzYIhn
SortUtil.swap(data,l,r); udK%>
} w0 M>[ 4
while(l SortUtil.swap(data,l,r); 1;bh^WMJ
return l; >%_ \;svZG
} pHGYQ;:L
B B{$&Oh
} ]6,\r"
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改进后的快速排序: mX"oW_EK
4!{KWL`A
package org.rut.util.algorithm.support; RXMISt3+{y
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import org.rut.util.algorithm.SortUtil; 8L=HW G!1
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/** {S]}.7`l9(
* @author treeroot olB.*#gA
* @since 2006-2-2 o+iiSTJEe
* @version 1.0 .D"m@~j7
*/ ~Y[r`]X`"m
public class ImprovedQuickSort implements SortUtil.Sort { Df-DRi
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private static int MAX_STACK_SIZE=4096; oi7@s0@
private static int THRESHOLD=10; E:_ZA
/* (non-Javadoc) nt;m+by
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3)wN))VBX
*/ b<[Or^X
]
public void sort(int[] data) { *uRBzO}
int[] stack=new int[MAX_STACK_SIZE]; PA{PD.4Du
dw>C@c#"
int top=-1; R{`(c/%8
int pivot; 6?gW-1mY
int pivotIndex,l,r; q4h]o^ +
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stack[++top]=0; 8.1c?S
stack[++top]=data.length-1; 'T;P;:!\
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while(top>0){ :1Xz4wkWS*
int j=stack[top--]; >0y'Rgfe
int i=stack[top--]; ;3coP{
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pivotIndex=(i+j)/2; :wyno#8`-
pivot=data[pivotIndex]; Vi$~-6n&
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SortUtil.swap(data,pivotIndex,j); U BU=9a5
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file://partition h|9L5
l=i-1; RZ?jJm$
r=j; \[i1JG
do{ `,*3[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CT<7mi!
SortUtil.swap(data,l,r); 8}x:`vDK
} tmYz R%i
while(l SortUtil.swap(data,l,r); y3Qsv
SortUtil.swap(data,l,j); ha<[bu e
#pow ub
if((l-i)>THRESHOLD){ e;q!6%
stack[++top]=i; w$iX.2|9%u
stack[++top]=l-1; @Sn(lnlB
} mfn,Gjt3O
if((j-l)>THRESHOLD){ %)8}X>xq
stack[++top]=l+1; =_*Zn(>t`
stack[++top]=j; '?' l;#^i<
} wh`"w7br
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} Xf]d. :
file://new InsertSort().sort(data); k/_ 59@)
insertSort(data); dh iuI|?@
} E?f-wQF
/** ;%9 |kU
* @param data 9!\B6=r y4
*/ !X#OOqPr=
private void insertSort(int[] data) { !;v|' I
int temp; m4Qh%}9%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <8&au(I,vB
} a(X@Q8l:
} `UyG_;
} '3tCH)s
Xza(k
} (*'f+R`$
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归并排序: 2 c{34:
9ULQrq$?
package org.rut.util.algorithm.support; S!CC
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import org.rut.util.algorithm.SortUtil; BoWg0*5xb
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/** 1N-\j0au
* @author treeroot Y\k#*\'Y~
* @since 2006-2-2 z'n:@E
* @version 1.0 b94DJzL1z
*/ {$
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public class MergeSort implements SortUtil.Sort{ *u [BP@vE
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/* (non-Javadoc) U(g:zae
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L|xbR#v
*/ s Y Qk
public void sort(int[] data) { %/.b~|,-
int[] temp=new int[data.length]; lT?v^\(H
mergeSort(data,temp,0,data.length-1); x~~|.C,
} wKxtre(v
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private void mergeSort(int[] data,int[] temp,int l,int r){ }<SQ
int mid=(l+r)/2; E6ElNgL
if(l==r) return ; cp7=epho
mergeSort(data,temp,l,mid); t\,PB{P:J
mergeSort(data,temp,mid+1,r); m}t`FsB.
for(int i=l;i<=r;i++){ WX?IYQ+
temp=data; k$R-#f;
} sIGMA$EK
int i1=l; S`0(*A[W*
int i2=mid+1; u|TeE\0
for(int cur=l;cur<=r;cur++){ %T%sGDCV
if(i1==mid+1) \&3+D8H>n
data[cur]=temp[i2++]; zP8lN(LA
else if(i2>r) 5x4yyb'
data[cur]=temp[i1++]; Id .nu/
else if(temp[i1] data[cur]=temp[i1++]; pJ"qu,w
else IueFx u
data[cur]=temp[i2++]; )23H1
} l'. VKh\C
} "(~^w=d:$
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} 7'V@+5
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改进后的归并排序: _op}1
<)c)%'v
package org.rut.util.algorithm.support; 9IfmW^0
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import org.rut.util.algorithm.SortUtil; ??vLUv
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/** { @{']Y
* @author treeroot Vaw+.sG`AP
* @since 2006-2-2 XJ|
<?
* @version 1.0 {qJ1ko)$
*/ L+i=VGm0
public class ImprovedMergeSort implements SortUtil.Sort { BG]#o|KW
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private static final int THRESHOLD = 10; Zt{[*~
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/* ~-Qw.EdC
* (non-Javadoc) s8t;.^1}
* CXMLt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F/kWHVHU[
*/ #gs`#6 ,'
public void sort(int[] data) { 29] G^f>
int[] temp=new int[data.length]; e 2oa($9
mergeSort(data,temp,0,data.length-1); oY3;.;'bk
} fxHH;hRfv
@:vwb\azVD
private void mergeSort(int[] data, int[] temp, int l, int r) { `kXs;T6&
int i, j, k; ]Q3ADh
int mid = (l + r) / 2; \?k'4rH
if (l == r) 0znR0%~
return; -zeG1gr3
if ((mid - l) >= THRESHOLD) Jk
n>S#SZ
mergeSort(data, temp, l, mid); wE`]7mA
else p]+Pkxz]'
insertSort(data, l, mid - l + 1); >@_^fw)
if ((r - mid) > THRESHOLD) pO3SUOP
mergeSort(data, temp, mid + 1, r); 6 V=9M:
else rw JIx|(
insertSort(data, mid + 1, r - mid); SZ'R59Ee<
flbd0NB
for (i = l; i <= mid; i++) { ;$wVu|&
temp = data; !?h;wR
} bJTBjS-7
for (j = 1; j <= r - mid; j++) { iz PDd{[
temp[r - j + 1] = data[j + mid]; z$. 88^
} K
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int a = temp[l]; n 0L^e
int b = temp[r]; c-6?2\]j@
for (i = l, j = r, k = l; k <= r; k++) { =X:Y,?
if (a < b) { E*K;H8}s
data[k] = temp[i++]; _A9AEi'.
a = temp; z46~@y%k
} else { xfe+n$~ c
data[k] = temp[j--]; jm/`iXnMf
b = temp[j]; `1fY)d^ZS
} e6$W Qd`O
} Feq]U?
} o3P${Rq
h3
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/** ?%[@Qb=2
* @param data BW*rIn<?G
* @param l tg4pyW<
* @param i W[e$>yK
*/ Eo]xNn/g
private void insertSort(int[] data, int start, int len) { v PG},m~-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hhc,uJ">!
} R-d:j^:f
} o]oum,Q
} y766;
X:J
} lq;Pch
8'io$6d=
堆排序: v`Oc,
c,+:i1IAy
package org.rut.util.algorithm.support; 'I6i,+D/q
M%P:n/j
import org.rut.util.algorithm.SortUtil; )1`0PJoHE
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/** vV-`jsq20H
* @author treeroot Txb#C[`
* @since 2006-2-2 kUrkG80q|
* @version 1.0 j{+.tIzpq[
*/ [/41%B2
public class HeapSort implements SortUtil.Sort{ /"Uqa,{
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/* (non-Javadoc) =MDysb&:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ],Do6
@M-
*/ P{lB50
public void sort(int[] data) { oQ[f,7u
MaxHeap h=new MaxHeap(); x7<K<k;s
h.init(data); M gi,$H
for(int i=0;i h.remove(); @Z:l62l=bE
System.arraycopy(h.queue,1,data,0,data.length); 6A+nS=
} mtcw#D
T!)(Dv8@F
private static class MaxHeap{ PIS2Ed]
-k"/X8
void init(int[] data){ P8/0H(,
this.queue=new int[data.length+1]; '3^'B03
for(int i=0;i queue[++size]=data; *_\_'@1|J)
fixUp(size); oV78Hq6
} >e5qv(y]
} U 0P~
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private int size=0; ":QZy8f9%
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private int[] queue; CryBwm
LsU9 .
public int get() { t!7-DF|N
return queue[1]; ZyFjFHe+
} v_GUNRs
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public void remove() { gT6jYQ
SortUtil.swap(queue,1,size--); D_zZXbNc
fixDown(1); 5M*:}*
} Wt~BU.
file://fixdown \ta?b!Y),?
private void fixDown(int k) { JYHl,HH#z
int j; Y9XEP7
while ((j = k << 1) <= size) { L`TRJ.GaJ
if (j < size %26amp;%26amp; queue[j] j++; -=\c_\ O
if (queue[k]>queue[j]) file://不用交换 j3E7zRm] \
break; LyFN.2qw
SortUtil.swap(queue,j,k); kc`Tdn
k = j; 1tFNM[R
} HY:7? <r
} tf`^v6m%]
private void fixUp(int k) { ds[|
while (k > 1) { d5:c^`
int j = k >> 1; j*r{2f4Rt
if (queue[j]>queue[k]) /hyN;.hpOO
break; *VxgARIL
SortUtil.swap(queue,j,k); i?^L/b`H
k = j; T{[=oH+
} j/?kL{B
} X$W~mQma6
fVpMx4&F
} u;2[AQ.
GC}==^1
} Wdbed U~`Q
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SortUtil: a<bwzX|.
T1=fNF
package org.rut.util.algorithm; "@2-Zdrr1<
S;`A{Mow
import org.rut.util.algorithm.support.BubbleSort; Q>Yjy!.<^
import org.rut.util.algorithm.support.HeapSort; p H2Sbs:Tk
import org.rut.util.algorithm.support.ImprovedMergeSort; v):Or'$~M
import org.rut.util.algorithm.support.ImprovedQuickSort; ji0@P'^;
import org.rut.util.algorithm.support.InsertSort; Q*~]h;6\{d
import org.rut.util.algorithm.support.MergeSort; z!9-:
import org.rut.util.algorithm.support.QuickSort; >e$PP8&i_T
import org.rut.util.algorithm.support.SelectionSort; TAW/zpps$
import org.rut.util.algorithm.support.ShellSort; t;\Y{`
7WZ+T"O{I
/** ePo}y])2
* @author treeroot {9q4)R}G
* @since 2006-2-2 k~nBiV
* @version 1.0 Oxd]y1
*/ ]~3V}z,T*
public class SortUtil { -6B4sZpzD
public final static int INSERT = 1; h(EhkCf
public final static int BUBBLE = 2; %._.~V
public final static int SELECTION = 3; H"WprHe
public final static int SHELL = 4; c9h6C
public final static int QUICK = 5; Wvf
^N(
public final static int IMPROVED_QUICK = 6; C1QA)E['V
public final static int MERGE = 7; $*fMR,~t&
public final static int IMPROVED_MERGE = 8; l!u_"I8j5
public final static int HEAP = 9; 20Wg=p9L
sd|).;s}
public static void sort(int[] data) { 1p=]hC
sort(data, IMPROVED_QUICK); qY!Zt_Be6
} HN|%9{VeB
private static String[] name={ &
>fQp(f
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 11;MN
}; #AQV(;r7@
/IMFO:c
private static Sort[] impl=new Sort[]{ 0n{=%Q
new InsertSort(), h~zT ydnH
new BubbleSort(), Ig>(m49d
new SelectionSort(), Er?&Y,o
new ShellSort(), r_A$DaC]
new QuickSort(), vx5Zl&6r
new ImprovedQuickSort(), ~Z'?LV<t
new MergeSort(), c{w2Gt!
new ImprovedMergeSort(), qlPT Ll
new HeapSort() 0LJv'
}; FU4L6n
'^UI,"Ti
public static String toString(int algorithm){ )lDD\J7
return name[algorithm-1]; IjnU?Bf
} g[4WzDF*
DSn_0D
public static void sort(int[] data, int algorithm) { kE1TP]|
impl[algorithm-1].sort(data); * r7rZFS
} >fQMXfoY
*\F~[
public static interface Sort { d%n-[ZL
public void sort(int[] data); X!EP$!
} 8YSAf+{FtK
:^h$AWR^f
public static void swap(int[] data, int i, int j) { -zfR)(zG
int temp = data; LZxNAua
data = data[j]; 4BpZJ~(p
data[j] = temp; "fOV^B
} s!$a\ k
} :Zw2'IV