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。 3,Iu!KB
插入排序: dkQP.Tj$i
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package org.rut.util.algorithm.support; O6">Io5
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import org.rut.util.algorithm.SortUtil; Ak3V< =gx
/** Qr-,J_
* @author treeroot crgVedx~}
* @since 2006-2-2 UH((d*HX4
* @version 1.0 {GGP8
*/ AyOy&]g
public class InsertSort implements SortUtil.Sort{ _Y)Wi[
=t.T9'{
/* (non-Javadoc) vVjk9_Ul
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SXNde@%
{
*/ 74c5\UxA
public void sort(int[] data) { xE*.,:,&
int temp; 5d-rF:#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oS<*\!&D
} Q+O./1x*,
} J2$,'(!(
} ^bLFY9hSC
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} x((Rm_'
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冒泡排序: eEYzA
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package org.rut.util.algorithm.support; vLGnLpt
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import org.rut.util.algorithm.SortUtil; [7,q@>:CS
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/** HzsQ`M4cA
* @author treeroot gIKQip<
* @since 2006-2-2 3MDs?qx>s
* @version 1.0 HI[Pf%${
*/ !1
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public class BubbleSort implements SortUtil.Sort{ a/[)A _-
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/* (non-Javadoc) 'k[vcnSz\/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v]}\Ns/
*/ YhP+{Y8t
public void sort(int[] data) { 4v9d&
m!<
int temp; s|k&@jH)
for(int i=0;i for(int j=data.length-1;j>i;j--){ TK0W=&6#A
if(data[j] SortUtil.swap(data,j,j-1); n(sseQ|\
} 1I40N[PE)
} bYr*rEcA
} X, }(MW
} Q!r` G
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} /<"ok;Pu7
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选择排序: wEQZ9?\
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package org.rut.util.algorithm.support; 7"OJ,Mx%
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import org.rut.util.algorithm.SortUtil; %8xK BL]J
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/** Tl1H2s=G-
* @author treeroot SF da?>
* @since 2006-2-2 v4XEp
* @version 1.0 Xv+,Z<>iQ
*/ D2RvFlAXu
public class SelectionSort implements SortUtil.Sort { \m=k~Cf:f
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/* U/_hH*N"!
* (non-Javadoc) FuG;$';H75
* N*)O_Ki
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }i^$
li@
*/ `Q[NrOqe"
public void sort(int[] data) { 8Y:x+v5
int temp; }T}xVd0
for (int i = 0; i < data.length; i++) { 5=8t<v1Bn
int lowIndex = i; ,hm&]
for (int j = data.length - 1; j > i; j--) { A r<!F/
if (data[j] < data[lowIndex]) { ex66GJQe1
lowIndex = j; DVDzYR**4
} )"7z'ar
} l(\F2_,2W
SortUtil.swap(data,i,lowIndex); ?-tNRIPW@p
} _hMFmI=r[
} +=sw&DH
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} 7m}fVLk
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Shell排序: ,sT5TS
q
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package org.rut.util.algorithm.support; <kWkc|zBY
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import org.rut.util.algorithm.SortUtil; *,~L_)vWO
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/**
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* @author treeroot UD9JE S,
* @since 2006-2-2 L\V`ou
* @version 1.0 -FJLM
*/ &xp]9$
public class ShellSort implements SortUtil.Sort{ l=x(
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/* (non-Javadoc) 2jxIr-a1G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }(,{^".[}
*/ X#zp,7j?
public void sort(int[] data) { 0& ?L%Y
for(int i=data.length/2;i>2;i/=2){ :}-?X\|\
for(int j=0;j insertSort(data,j,i); {WQ6=wGpS
} ^;tB,7:*V
} lS#^v#uS
insertSort(data,0,1); q([{WZ:6Oq
} =^ \?{oV
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/** B{p74
>
* @param data #%w)w R3
* @param j >8b%*f8R
* @param i d8U<V<H<
*/ @4]{ZUV
private void insertSort(int[] data, int start, int inc) { wvxsn!Ao&=
int temp; {R_ <m$
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {'z$5<|
} ?7J::}R
} ap2g^lQXq
} 9%bErMHL
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} 4C;y2`C
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快速排序: G*jq5_6
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package org.rut.util.algorithm.support; <lLJf8OK
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import org.rut.util.algorithm.SortUtil; ia3!&rZ
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/** USS%T<Vk
* @author treeroot ]Qa|9G,b
* @since 2006-2-2 WW2hwB(
* @version 1.0 Hsd76z#8
*/ :,g]Om^
public class QuickSort implements SortUtil.Sort{ sZEa8
B9%%jEH*
/* (non-Javadoc) dZI["FeO&d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^@{"a
*/ *u",-n
public void sort(int[] data) { <]X6%LX
quickSort(data,0,data.length-1); 9X
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} xGOVMo
+
private void quickSort(int[] data,int i,int j){ L./c#b!{
int pivotIndex=(i+j)/2; .!Kqcz% A
file://swap \CVHtV
SortUtil.swap(data,pivotIndex,j); j%Xa8$
"a3?m)
int k=partition(data,i-1,j,data[j]); /Ov1eQBNG
SortUtil.swap(data,k,j); R/kJUl6HEl
if((k-i)>1) quickSort(data,i,k-1); L#J2J$=
if((j-k)>1) quickSort(data,k+1,j); &`m$Zzl;
#9F>21UU
} E31YkD.A
/** V!>j:"
* @param data 9v?@2sOoE
* @param i ~sPXkLqK
* @param j 1[$zdv{A
* @return 1iNMgA
*/ d>F. C>
private int partition(int[] data, int l, int r,int pivot) { ST0TWE'
do{ r-*6#
"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GN:|b2 "
SortUtil.swap(data,l,r); t`R{N1
} ]!~?j3-k Q
while(l SortUtil.swap(data,l,r); Q'JK *.l
return l; u6Wan*I?
} +|7N89l
+!!G0Zj/
} K+XUC
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改进后的快速排序: cza_LO(
/wl]kGF
package org.rut.util.algorithm.support; U_j[<.aN)
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import org.rut.util.algorithm.SortUtil; I|qhj*_C
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/** ^FkB/j
* @author treeroot ~P"Agpx3u
* @since 2006-2-2 RA;/ ?l
* @version 1.0 XgM&0lVT
*/ G%AO%II
public class ImprovedQuickSort implements SortUtil.Sort { {K6Z.-.`
R/*"N'nH-%
private static int MAX_STACK_SIZE=4096; Cb`, N
private static int THRESHOLD=10; ~G-W|>
/* (non-Javadoc) G--(Ef%v'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BV
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*/ f}p`<z
public void sort(int[] data) { &/ED.K
int[] stack=new int[MAX_STACK_SIZE]; RqP_^tB
&q9=0So4\
int top=-1; ^y KkWB*
int pivot; BzkfB:wr
int pivotIndex,l,r; [#RFdn<
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stack[++top]=0; ",J&UTUh
stack[++top]=data.length-1; `b] wyP
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while(top>0){ %KkC1.yu<
int j=stack[top--]; au/LoO#6Ro
int i=stack[top--]; 6vR6=@(`>
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pivotIndex=(i+j)/2; }!R*Q`m
pivot=data[pivotIndex]; -2 >s#/%
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SortUtil.swap(data,pivotIndex,j); '`.-75T
_cj=}!I
file://partition hliO/3g
l=i-1; ,+4T7 U R
r=j; U]_WX(4 @
do{ G5K?Q+n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "DfjUk
SortUtil.swap(data,l,r); (V\N1T,f
} ir>h3Zk
while(l SortUtil.swap(data,l,r); II| ;_j
SortUtil.swap(data,l,j); HLG5SS7
%7P]:G+Y\
if((l-i)>THRESHOLD){ >u(^v@Ejf
stack[++top]=i; J:gC1g^
stack[++top]=l-1; }LKD9U5;8
} *Egg*2P;"Q
if((j-l)>THRESHOLD){ S50}]5K
stack[++top]=l+1; VltM{-k^
stack[++top]=j; 6)ln,{
} W=w]`'
saQs<1
} VHMQY*lk
file://new InsertSort().sort(data); 0Xw>_#Y/xS
insertSort(data); s-+-?$K
} C.ji]P#
/** {i?G:K
* @param data ge.>#1f}
*/ vmrs(k "d#
private void insertSort(int[] data) { {*TB }Xsr,
int temp; c s*E9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~;H,cPvrEg
} naH(lz|v
} %.r\P@7/Q
} p9u*l
A%HIfSzQBS
} $p4e8j[EJ
k'H[aYMA
归并排序: 6kLy!QS
/j}Tv.'d
package org.rut.util.algorithm.support; +Ln^<!P
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import org.rut.util.algorithm.SortUtil; ".$kOH_:
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/** 0XCAnMVo
* @author treeroot 6QbDU[
* @since 2006-2-2 LjE3|+pJ
* @version 1.0 G?=&\fg_:
*/ jll:Rh(b
public class MergeSort implements SortUtil.Sort{ ,>7dIJqzw
"0[`U(/
/* (non-Javadoc) a^@.C5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AG9DJ{T
*/ f_[dFKoX
public void sort(int[] data) { u/6if9B
int[] temp=new int[data.length]; 9N)I\lcY
mergeSort(data,temp,0,data.length-1); Qkx*T9W
} a{Y|`*7y
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private void mergeSort(int[] data,int[] temp,int l,int r){ l5Ko9CG
int mid=(l+r)/2; aF+Lam(
if(l==r) return ; [J}eNprg
mergeSort(data,temp,l,mid); ?HZ^V
mergeSort(data,temp,mid+1,r); Ys}^hy
for(int i=l;i<=r;i++){ WPNw")t!
temp=data; SJa>!]U'xI
} P-gj SE|yh
int i1=l; KB|mtsi
int i2=mid+1; %A'mXatk
for(int cur=l;cur<=r;cur++){ Xm>zT'B_tJ
if(i1==mid+1) D:bmq93PC
data[cur]=temp[i2++]; "``>ii
else if(i2>r) ;<Hk Cd
data[cur]=temp[i1++]; 4c 8{AZ
else if(temp[i1] data[cur]=temp[i1++]; l1'v`!
else RH<2f5-sC!
data[cur]=temp[i2++]; M.}J SDt
} kBcTXl
} rDbtT*vN
JG'%HJ"D
} 1uj~/M
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改进后的归并排序: MQx1|>rG
gMF6f%
package org.rut.util.algorithm.support; [1kQ-Ko`
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import org.rut.util.algorithm.SortUtil; F%o!+%&7
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/** R@jMFh;
* @author treeroot L{&2 P
* @since 2006-2-2 Q~Mkf&s
* @version 1.0 ?Ce=h+l
*/ S@u46 X>
public class ImprovedMergeSort implements SortUtil.Sort { !(? 7V
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private static final int THRESHOLD = 10; =dA]nM
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/* ~nmFZ]y
* (non-Javadoc) X5/fy"g&
* 6[ 3 K@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k &J;,)V
*/ JfWkg`LqL
public void sort(int[] data) { s.Z{mnD6
int[] temp=new int[data.length]; xCXsyZ2h
mergeSort(data,temp,0,data.length-1); tyW}=xs
} nng|m
c(
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private void mergeSort(int[] data, int[] temp, int l, int r) { !"qT2<A
int i, j, k; [niFJIsc
int mid = (l + r) / 2; _3 oo%?}
if (l == r) WXmfh
return; T\.(e*hC
if ((mid - l) >= THRESHOLD) QCZ88\jX[
mergeSort(data, temp, l, mid); iw/~t
else a'jUM+D;
insertSort(data, l, mid - l + 1); TY %zw6 #p
if ((r - mid) > THRESHOLD) P}5bSQ( a3
mergeSort(data, temp, mid + 1, r); iv +a5
else g_c@Kyf
insertSort(data, mid + 1, r - mid); sYDav)L.
c:0n/DC
for (i = l; i <= mid; i++) { *izCXfW7
temp = data; Xzg >/w
8J
} )2Sh oFF
for (j = 1; j <= r - mid; j++) { iTAj${ >
temp[r - j + 1] = data[j + mid]; ?.<
Qgd
} ^SG>VfgC
int a = temp[l]; xJ{r9~
int b = temp[r]; W;7$Dq:
for (i = l, j = r, k = l; k <= r; k++) { mwLf)xt0'
if (a < b) { PbZ%[F
data[k] = temp[i++]; 2?q>yL! Gz
a = temp; "zY~*3d
} else { (BP p2^
data[k] = temp[j--]; 8=L"rekV_
b = temp[j]; {v]L|e%{
} $eI
cCLF
} 81y<Uz 6
} 0{
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/** &}e>JgBe0
* @param data ,NZllnW
* @param l ANBuX6q
* @param i duEXp]f!
*/ fiWN^sTM
private void insertSort(int[] data, int start, int len) { \MRd4vufv
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jXf@JxQ
} :
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} LJ@(jO{z
} ,hI$nF0}p
} vFdI?(c-
V':A!
堆排序: 3GE;:;8B
eEVB
package org.rut.util.algorithm.support; '9WTz(0?
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l
import org.rut.util.algorithm.SortUtil; d"?"(Q_8n
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/** }hg=#*
* @author treeroot myX&Z F_9
* @since 2006-2-2 D8,8j;
* @version 1.0 V;SV0~&
*/ [XI:Yf
public class HeapSort implements SortUtil.Sort{ P!f0&W
aQL0Sj:,
/* (non-Javadoc) :$K=LV#Iru
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lq_UCCnv5
*/ C=o-3w
public void sort(int[] data) { ,i}EGW,9q
MaxHeap h=new MaxHeap(); M| Gl&
h.init(data); hR|xUp
for(int i=0;i h.remove(); WZ6{9/%:
System.arraycopy(h.queue,1,data,0,data.length); SS%Bde&<{
} ]N]Fb3
9FSa=<0wE
private static class MaxHeap{ mB>0$l y
lG0CCOdQ
void init(int[] data){ PZ6R+n8
this.queue=new int[data.length+1]; B/a`5&G]
for(int i=0;i queue[++size]=data; Xykoq"dbb
fixUp(size); ej_u):G*
} #KoI8U"
} ;5X~"#%U_
AFL'Ox]0
private int size=0; \jk*Nm8;
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private int[] queue; NbU4|Oi
)=}qAVO8
public int get() { &aIFtlC
return queue[1]; aE)1LP
} `)8~/G%
~
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public void remove() { f9#srIx+
SortUtil.swap(queue,1,size--); `` g
fixDown(1); AP>n-Z|
} >>J$`0kM*
file://fixdown ,}W|cm>
private void fixDown(int k) { rWJ5C\R
int j; o?/H<k\5
while ((j = k << 1) <= size) { {jYVA~.|Z
if (j < size %26amp;%26amp; queue[j] j++; B<BS^waU
if (queue[k]>queue[j]) file://不用交换 0/DO"pnL@
break; EgPL+qL
SortUtil.swap(queue,j,k); ~Sb)i f
k = j; g#74c'+
} [7PC\
} fWA#n
private void fixUp(int k) { 1SS1P0Ur
while (k > 1) { 6;Z`9PGp
int j = k >> 1; Y J,"@n_
if (queue[j]>queue[k]) ^`lD w
break; |X1axRO
SortUtil.swap(queue,j,k); EMe1!)
k = j; a_+3, fP
} rZ(#t{]=!
} .zdaY,
U
hx@@[sKF7
} 3HuocwWbz
*ezMS
} u8JH~b
_y6iR&&x
SortUtil: u=L Dfn
iTdamu`L
package org.rut.util.algorithm; kw z6SObQ
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import org.rut.util.algorithm.support.BubbleSort; \(Nx)F
import org.rut.util.algorithm.support.HeapSort; j<!dpt
import org.rut.util.algorithm.support.ImprovedMergeSort; #9}1Lo>
import org.rut.util.algorithm.support.ImprovedQuickSort; z0\
$#r^I
import org.rut.util.algorithm.support.InsertSort; tQNc+>7k+u
import org.rut.util.algorithm.support.MergeSort; $2*_7_Qb
import org.rut.util.algorithm.support.QuickSort; b4^O=
import org.rut.util.algorithm.support.SelectionSort; |;|r[aU
import org.rut.util.algorithm.support.ShellSort; :Wx7a1.Jz
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/** cZYvP
* @author treeroot q,7W,<-
* @since 2006-2-2 `'iO+/;GY
* @version 1.0 ;lE=7[UJ3X
*/ #E
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public class SortUtil { u!~kmIa4
public final static int INSERT = 1; rd%uc~/
public final static int BUBBLE = 2; Z>R@
public final static int SELECTION = 3; 2K/t[.8
public final static int SHELL = 4; {7oPDP
public final static int QUICK = 5; o8:9Yjs
public final static int IMPROVED_QUICK = 6; #w5%^HwO
public final static int MERGE = 7; tR9iFv_
public final static int IMPROVED_MERGE = 8; 5#|&&$)
public final static int HEAP = 9; KAE %Wwjr
/0k'w%V{n
public static void sort(int[] data) { }sqFvab<
sort(data, IMPROVED_QUICK); /,~]1&?}1
} B+Qo{-
private static String[] name={ !.# g
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]vR
Ol.
}; ex~"M&^
32 j){[PL3
private static Sort[] impl=new Sort[]{ 0 5?`W&:9
new InsertSort(), /YPG_,lRA
new BubbleSort(), 8VU(+%X
new SelectionSort(), WQCnkP
new ShellSort(), &m36h`tM
new QuickSort(), POl-S<QV
new ImprovedQuickSort(), E[ -yfP~[
new MergeSort(), C%<Dq0j
new ImprovedMergeSort(), aLLI\3
new HeapSort() uIO?4\s&G
}; 1Ci^e7|?
]QY-LO(
public static String toString(int algorithm){ 6||%T$_;}
return name[algorithm-1]; C[TjcHoA
} c^H#[<6p
f:P;_/cJc
public static void sort(int[] data, int algorithm) { x{!+4W;S
impl[algorithm-1].sort(data); v h)CB8
} $_'<kH-eP
ncUhCp?'
public static interface Sort { so.}WU
public void sort(int[] data); #%$@[4"V
} YVF@v-v-,
[Pq
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public static void swap(int[] data, int i, int j) { >2K'!@~'
int temp = data; 3zfpFgD!
data = data[j]; 4Hyp]07
data[j] = temp; )D+eWo
} =s:kC`O
} e)-$#qW