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。 :X7"fX
插入排序: ;A)w:"m
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package org.rut.util.algorithm.support; "{-jZdq'
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import org.rut.util.algorithm.SortUtil; mk#xbvvG
/** k@r%>Ul@
* @author treeroot _ S%3?Q
* @since 2006-2-2 `?)ivy>\:
* @version 1.0 kd^CZ;O
*/ IfF@$eO
public class InsertSort implements SortUtil.Sort{ *|S.[i_7
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/* (non-Javadoc) $w{!}U 2+-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x#z}A&
*/ %7WQb]y
public void sort(int[] data) { }nNZp
int temp; Kp[ F@A#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $oKT-G
} <RzGxhT
} eZ+pZ q
} n<47#-
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} PScq-*^
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冒泡排序: |E:q!4?0
9AQMB1D*v4
package org.rut.util.algorithm.support; LlAMtw"
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import org.rut.util.algorithm.SortUtil; h">L>*Wfx
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/** W8hf
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* @author treeroot y;W|)
* @since 2006-2-2 *`D(drnT{
* @version 1.0 YU! SdT$
*/ ZZ/F}9!=
public class BubbleSort implements SortUtil.Sort{ <n+?7`d,
3Z.<=D
/* (non-Javadoc) Y]
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~RdJP'YF-
*/ !Cse,6/Z
public void sort(int[] data) { -90qG"@
int temp; Nm;(M=
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6
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I
if(data[j] SortUtil.swap(data,j,j-1); r9:Cq
} 2xy
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} x;d*?69f]
} ('yBIb\ue
} 78'HE(*
w@ 1g_dy
} C>\0
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d&mSoPf
选择排序: " sh%8
<N
9X<o8^V
package org.rut.util.algorithm.support; 8^bc4(H
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import org.rut.util.algorithm.SortUtil; QkMK\Up
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/** Af'L=0
* @author treeroot p9c`rl_N
* @since 2006-2-2 ID+o6/V8
* @version 1.0 r3.A!*!
*/ 2flgfB}2k
public class SelectionSort implements SortUtil.Sort { )3h%2C1uM
M'Fa[n*b?!
/* 3Yu1ZuIR
* (non-Javadoc) {Dv^j#
* 5LJUD>f9Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L< 3U)Gp
*/ 4x8e~/
public void sort(int[] data) { 1;O%8sp&
int temp; /W4F(3oM
for (int i = 0; i < data.length; i++) { &OpGcbf1
int lowIndex = i; Ur^~fW1o
for (int j = data.length - 1; j > i; j--) { 6 <&jY
if (data[j] < data[lowIndex]) { t^N
92$|
lowIndex = j; a>w@9
} *=+m;%]_
} C)w11$.YQ9
SortUtil.swap(data,i,lowIndex); Cso!VdCX
} s{IXth6
} 6g\SJO-;N
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} 3aMfZa<=
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Shell排序: -Ucj|9+(a
"'389*-
package org.rut.util.algorithm.support; y^utMH
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import org.rut.util.algorithm.SortUtil; lHg&|S&J
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/** Ml)0z&jQX
* @author treeroot iR
k.t=B
* @since 2006-2-2 \?n4d#=$o
* @version 1.0 -Fi{[%&u
*/ n%N|?!rB
public class ShellSort implements SortUtil.Sort{ )`Zj:^bz9
Jxyeh1zqB
/* (non-Javadoc) w QV4[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0}(ZW~&1
*/ [=Qv?am
public void sort(int[] data) { ']'H8Y-M
for(int i=data.length/2;i>2;i/=2){ }o>6 y>=
for(int j=0;j insertSort(data,j,i); zGm#erE
}
"rnZ<A}
} y,I ?3p|S
insertSort(data,0,1); {Pi+VuLE
} }B-@lbK6)
&c;@u?:@S
/** 3$cIm+
* @param data >0#WkmRY
* @param j \tL9`RKpg
* @param i G$hH~{Y$
*/ y^M~zOe
private void insertSort(int[] data, int start, int inc) { -68E]O
int temp; xLUgbql-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F%Te0l
} hXxgKi%
} q]1HCWde
} /jBjqE;_
Oy U[(
} a(!_3i@
2&L2G'
快速排序: ~g&FeMo
-!X,MDO
package org.rut.util.algorithm.support; T6
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import org.rut.util.algorithm.SortUtil; ifo^
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/** d%IM`S;fh
* @author treeroot O'5xPJ
* @since 2006-2-2 T#L/HD
* @version 1.0 *3,GQ%~/z
*/ x3X^\Ig
public class QuickSort implements SortUtil.Sort{ RTHe#`t
z(-j%?
/* (non-Javadoc) AOh\%|}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v0~'`*|&
*/ wUnz D)
public void sort(int[] data) { SONv]));
quickSort(data,0,data.length-1); p&Os5zw;|
} D{%l 4og
private void quickSort(int[] data,int i,int j){ }3G`f> s
int pivotIndex=(i+j)/2; /h/f&3'h
file://swap +`;YK7o
SortUtil.swap(data,pivotIndex,j); u}zCcWP|L
MMyVm"w
int k=partition(data,i-1,j,data[j]); eB]cPo4gW
SortUtil.swap(data,k,j); tbx* }uy2
if((k-i)>1) quickSort(data,i,k-1); ^h
q?E2-
if((j-k)>1) quickSort(data,k+1,j); W u4` 3
cba
} 2`D1cX
/** 7d44i
* @param data Im7t8XCG
* @param i PEKU
* @param j 0?]Y^:
* @return $L~?!u&N
*/ J>H$4t#HX
private int partition(int[] data, int l, int r,int pivot) { {'.[N79xP
do{ k!{0ku}]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4Dd@&N
SortUtil.swap(data,l,r); xY3KKje
} pS1f y]
while(l SortUtil.swap(data,l,r); <!+T#)Qi
return l; 03]
} L4fM?{Ic:s
8T:?C~"
} 5PaOa8=2f
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改进后的快速排序: jFa{h!
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package org.rut.util.algorithm.support; TFIP>$*_C
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import org.rut.util.algorithm.SortUtil;
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/** |4=Du-e
* @author treeroot h92'~X36
* @since 2006-2-2 ;IN!H@bq
* @version 1.0 #84<aM
*/ F&ud|X=m
public class ImprovedQuickSort implements SortUtil.Sort { -r.Qy(}p
:h4Nfz(
private static int MAX_STACK_SIZE=4096; &#keI.,
private static int THRESHOLD=10; j|Q*L<J
/* (non-Javadoc) aFCma2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @X _<y
*/ 8uj;RG
public void sort(int[] data) { +#||
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int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; q<5AB{Oj?
int pivot; <{t*yMr
int pivotIndex,l,r; OKXELP
?9Lp@k~TO
stack[++top]=0; P^wDt14>
stack[++top]=data.length-1; y:C=Ni&,"
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while(top>0){ 1MntTIT
int j=stack[top--]; ^)qOILn
int i=stack[top--]; NuL.l__W
}bU1wIW9I
pivotIndex=(i+j)/2; G*oqhep
pivot=data[pivotIndex]; (%bqeI!ob
)D_\~n/5
SortUtil.swap(data,pivotIndex,j); vlygS(Y_7
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file://partition +,"O#`sy<
l=i-1; S:.Vt&+NJ
r=j; ?h7,q*rxk
do{ m$ubxI)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); kjS9?>i
SortUtil.swap(data,l,r); 5,i0QT"
} PVNDvUce
while(l SortUtil.swap(data,l,r); EFd9n
SortUtil.swap(data,l,j); !CnkG<5z>
1FkS$ j8:
if((l-i)>THRESHOLD){ i4Ps#R_wx
stack[++top]=i; &bIE"ZBjt
stack[++top]=l-1; LqDj4[}
} !=-{$& {
if((j-l)>THRESHOLD){ fz9
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stack[++top]=l+1; vtm?x,h
stack[++top]=j; q6A"+w,N
} :1O49g3R
h(<2{%j
} xcVF0%wVC
file://new InsertSort().sort(data); JB}jt)ol%
insertSort(data); =>y%Aj&4
} ;5ANw"Dq
/** vVA)x~^
* @param data M5C%(sQ$
*/ '}F=U(!
private void insertSort(int[] data) { j9voeV|7
int temp; >EVY,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pA~eGar_J
} +\Zr\fOe|%
}
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} p7Q}xx
qm!&(8NfK
} <w9<G
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归并排序: {Rd){ky@
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package org.rut.util.algorithm.support; c9uln
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import org.rut.util.algorithm.SortUtil; ZcP/rT3{^
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/** *(w#*,lv
* @author treeroot :!cNkJa
* @since 2006-2-2 {&I3qk2(
* @version 1.0 6
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*/ `S&.gPE2
public class MergeSort implements SortUtil.Sort{ UA%tI2
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/* (non-Javadoc) )C1ihm!7\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GIs
*;ps7w
*/ gO9\pI2
public void sort(int[] data) { K:<0!C!
int[] temp=new int[data.length]; :m{;<LRV
mergeSort(data,temp,0,data.length-1); Bh%Yu*.f
} ah8xiABa
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private void mergeSort(int[] data,int[] temp,int l,int r){ HW"';M%
int mid=(l+r)/2; u3VSS4RG%
if(l==r) return ; d[t+iBP;)
mergeSort(data,temp,l,mid); xGBp+j1H
mergeSort(data,temp,mid+1,r); vgyv~Px]AW
for(int i=l;i<=r;i++){ A4|L;z/A[h
temp=data; H[;\[3
} m})EYs1
int i1=l; @D3|Ak 1
int i2=mid+1; kJfMTfl,
for(int cur=l;cur<=r;cur++){ Jh6 z5xUV
if(i1==mid+1) 1>"Yw|F-|3
data[cur]=temp[i2++]; aj\
zc I
else if(i2>r) Wh7}G
data[cur]=temp[i1++]; Y}aaW[
else if(temp[i1] data[cur]=temp[i1++]; &4
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else `#Yv(a2TY
data[cur]=temp[i2++]; V=+wsc
} k%-S7iQ
} )e|n7|} $
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} 6M)4v{F
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改进后的归并排序: $!m (S&f
wpW3%r;9
package org.rut.util.algorithm.support; IMF9eS{L
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import org.rut.util.algorithm.SortUtil; kbR!iPM-;
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/** O"c@x:i
* @author treeroot -h|YS/$f
* @since 2006-2-2 RY\[[eG
* @version 1.0 !
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*/ zmEg4 v'I
public class ImprovedMergeSort implements SortUtil.Sort { ^5- 8'9 w
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private static final int THRESHOLD = 10; e ab_"W
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/* {YT@$K]w,
* (non-Javadoc) ~4t7Q
* JIYZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q9C;_Up
*/ O.+02C_*
public void sort(int[] data) { 8h=Rfa9
int[] temp=new int[data.length]; @*s7~:VQ
mergeSort(data,temp,0,data.length-1); '4x uH3
} -$0w-M8'
_(&XqEX
private void mergeSort(int[] data, int[] temp, int l, int r) { \'}? j- 8
int i, j, k; +|OrV'
int mid = (l + r) / 2; NR@n%p
if (l == r) }o{6
return; .on}F>3k$
if ((mid - l) >= THRESHOLD) {rE]y C^
mergeSort(data, temp, l, mid); + NpHk
else G|,'6|$jE
insertSort(data, l, mid - l + 1); CdFr
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if ((r - mid) > THRESHOLD) g~Hmka_fD1
mergeSort(data, temp, mid + 1, r); sm1(I7y
else ^@a|s
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insertSort(data, mid + 1, r - mid); 2uajK..b
__Tg1A
for (i = l; i <= mid; i++) { 3u g-cq
temp = data; _w\A=6=q|
} d0"Xlleld
for (j = 1; j <= r - mid; j++) { v?
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temp[r - j + 1] = data[j + mid]; '*XX|\.
} g,,'Pdd7Pn
int a = temp[l]; $RJpn]d
j
int b = temp[r]; qL
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for (i = l, j = r, k = l; k <= r; k++) { J<'7z%2w
if (a < b) { N-Jp; D
data[k] = temp[i++]; r:QLO~l/
a = temp; N7WQ{/PSG
} else { nYF;.k
data[k] = temp[j--]; )vcyoq
b = temp[j]; tI-u@
g
} l^,"^vz
} W.O]f.h
} fSL'+l3
7yDWc m_y
/** G$HXc$OY
* @param data Y8$,So>~
* @param l _,C>+dv)
* @param i 0wlKBwf`J
*/ LE1#pB3TG
private void insertSort(int[] data, int start, int len) { F]4JemSjK
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QT\=>,Fz _
} u+
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} Tz"Xm/Gy
} FWJhi$\:D]
} .dvO Ut I[
-%g&O-i\
堆排序: L=1~)>mP
|[lmW%
package org.rut.util.algorithm.support; BA
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?-HLP%C('
import org.rut.util.algorithm.SortUtil; $QB~ x{v@n
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/** #3WKm*T/
* @author treeroot F=qG+T
* @since 2006-2-2 0zCmU)ng
* @version 1.0 l2lyi
*/ TODTR7yGo
public class HeapSort implements SortUtil.Sort{ m+ww
;
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/* (non-Javadoc) $afE=
qC*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E/6@>.T?'
*/ q]qKU`m!Q`
public void sort(int[] data) { {|Pg]#Wi&
MaxHeap h=new MaxHeap(); \F
}s"#
h.init(data); + yF._Ie=
for(int i=0;i h.remove(); P
nxx W?
System.arraycopy(h.queue,1,data,0,data.length); R
| &+g\{;
} zx7g5;J
#Xa TUT
private static class MaxHeap{ w
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zKP{A Sk
void init(int[] data){ A/%+AH(
this.queue=new int[data.length+1]; VYj*LiR
for(int i=0;i queue[++size]=data; lNQ8$b
fixUp(size); oieZopYA
} 6_.K9;Gd
} U fzA/
G+$A|'<`z
private int size=0; |~y>R#u8pm
"iC*Eoz#.
private int[] queue; ofu
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public int get() { \>%.ktG
return queue[1]; REe<k<>p~
} =%\y E0#
!4blX'<w
public void remove() { i3s,C;7[2
SortUtil.swap(queue,1,size--); L#|,_j=9
fixDown(1); yl#(jb[?1
} 5^}"Tn4I
file://fixdown 0bt"U=x4
private void fixDown(int k) { T/$6ov+K
int j; mg)Zo C
while ((j = k << 1) <= size) { I\|x0D
if (j < size %26amp;%26amp; queue[j] j++; n>
>!dg Og
if (queue[k]>queue[j]) file://不用交换 wy1xZQ<5
break; X4D>
SortUtil.swap(queue,j,k); 8!T6N2O6d
k = j; -b7q)%V
} ;Az9p h
} j1yW{
private void fixUp(int k) { &QoV(%:]
while (k > 1) { ~G;lEp
int j = k >> 1; Rpi@^~aPE
if (queue[j]>queue[k]) *_aeK~du.
break; x2KIGG^
SortUtil.swap(queue,j,k); ;Rz+4<
k = j; ZMI!Sl
} 9AxeA2/X
} KqE5{ q
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} :JEzfI1
b&i0)/;
} nVp*u9]
')8c
SortUtil: ir-= @@
Rqk;!N
package org.rut.util.algorithm; SS/9fT"[
)Hp{8c
import org.rut.util.algorithm.support.BubbleSort; 6^Q Bol
import org.rut.util.algorithm.support.HeapSort; ks=l
Nz9
import org.rut.util.algorithm.support.ImprovedMergeSort; vuOixAkw
import org.rut.util.algorithm.support.ImprovedQuickSort; $Eo)i
import org.rut.util.algorithm.support.InsertSort; !D_Qat
import org.rut.util.algorithm.support.MergeSort; C|@6rr9TA
import org.rut.util.algorithm.support.QuickSort; "8'aZ.P
import org.rut.util.algorithm.support.SelectionSort; %s^2m"ca}=
import org.rut.util.algorithm.support.ShellSort; 7<ZP (I5X
RkrZncBgV<
/** z&3in
* @author treeroot Q}A*{9#|
* @since 2006-2-2 \UD:9g"
* @version 1.0 Yb~[XS |p
*/ /hojm6MM
public class SortUtil { >sUavvJ~x
public final static int INSERT = 1; +~E;x1&'
public final static int BUBBLE = 2; >A+0"5+_p
public final static int SELECTION = 3; U|Du9_0
public final static int SHELL = 4; tY1M7B^~
public final static int QUICK = 5; IC1oW)
public final static int IMPROVED_QUICK = 6; u Z(vf
public final static int MERGE = 7; r fl-(_3
public final static int IMPROVED_MERGE = 8; @-7h}2P Q
public final static int HEAP = 9; )YB@6TiD
LFi 8@
public static void sort(int[] data) { ?D6?W6@
sort(data, IMPROVED_QUICK); c%5G3j
} &Ow[
private static String[] name={ `<0{U]m
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" M[C9P.O%w
}; E% ?X-$a
2]$
7
private static Sort[] impl=new Sort[]{ e~NEyS~3
new InsertSort(), /!V)2j,
new BubbleSort(), 2hlb$N-hk
new SelectionSort(), vp"b_x1-
new ShellSort(), xXCSaBS~
new QuickSort(), :r{;'[38
new ImprovedQuickSort(), GkhaB(btk'
new MergeSort(), oi@/H\7j
new ImprovedMergeSort(), cVx#dDdA
new HeapSort() pCE,l'Xa
}; &.>
2@
s$V'|Pt
public static String toString(int algorithm){ OwdA6it^f
return name[algorithm-1]; B.e3IM0
} ({GN.pC(
3X0"</G6
public static void sort(int[] data, int algorithm) { cTU%=/gbc<
impl[algorithm-1].sort(data); 4\cJ}p}LZ{
} ~HW}Wik
f.Uvf^T}2
public static interface Sort { r+4<Lon~
public void sort(int[] data); qmWK8}F.cE
} 6`ZHFem
XZ8#8Di8
public static void swap(int[] data, int i, int j) { @Kx@ 2#~b
int temp = data; |;G9K`8
data = data[j]; X^?M4
data[j] = temp; r#%e$
} dB{VY+!
} ^#-i%V%