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。 MtJ-pa~n
插入排序: -K/+}4i3N
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package org.rut.util.algorithm.support; zyS8LZ-y9
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import org.rut.util.algorithm.SortUtil; .\caRb[
/** ]nsjYsT
* @author treeroot LhO\a
* @since 2006-2-2 0%bCP/
* @version 1.0 ?("O.<
*/ ^$ Y9.IH"
public class InsertSort implements SortUtil.Sort{ [-\ Y?3
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/* (non-Javadoc) {]>c3=~FQb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [S'1OR$FQ\
*/ r<0E[~
public void sort(int[] data) { *duG/?>P
int temp; dBI-y6R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TKnWhB/J
} LtRRX@qJw
} |jIH gm
} }<WJR Y6j
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} @V:K]M 5
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冒泡排序: h@`Rk
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package org.rut.util.algorithm.support; |5vcT,A
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import org.rut.util.algorithm.SortUtil; D=ej%]@iw
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/** O}"oz3H
* @author treeroot yx8G9SO?
* @since 2006-2-2 \d"\7SA
* @version 1.0 Zbnxs.i!
*/ O_;BZzT
public class BubbleSort implements SortUtil.Sort{ *}vvS^ c0
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/* (non-Javadoc) ?J2{6,}O*.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S#GxKMO%
*/ Vq3 NjN!+5
public void sort(int[] data) { <.)=CK
int temp; M@TG7M7Os
for(int i=0;i for(int j=data.length-1;j>i;j--){ d~8U1}dP
if(data[j] SortUtil.swap(data,j,j-1); Ubu&$4a
} })OS2F
} L$=R/l
} *fm?"0M5
} ;"&?Okz
%<kfW&_>w
} {jD?obs
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选择排序: >Cr"q*
q]{gAGe~
package org.rut.util.algorithm.support; <~mqb=qA$
@_`r*Tb)dM
import org.rut.util.algorithm.SortUtil; zh) &6'S\
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/** "c[> >t
* @author treeroot L<V20d9
* @since 2006-2-2 b=Nsz$[
* @version 1.0 ^x&x|ckR!
*/ 4PVg?
public class SelectionSort implements SortUtil.Sort { 21OfTV-+3
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/* St?mq* ,
* (non-Javadoc) R"OT&:0/
* d_
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v.W!
*/ "5eD
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public void sort(int[] data) { lB27Z}
int temp; ?`TJ0("z"
for (int i = 0; i < data.length; i++) { &m5^
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int lowIndex = i; DAq
H
for (int j = data.length - 1; j > i; j--) { #N`'hPD}
if (data[j] < data[lowIndex]) { l]|&j`'O
lowIndex = j; bpsyO>lx/
} Q3>qT84
} r^"o!,H9q
SortUtil.swap(data,i,lowIndex); EG\L]fmD
} U>t:*SNC*
} $MasYi
~"S5KroN
} il>+jVr
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Shell排序: .U(6])%;@
iY>xx~V
package org.rut.util.algorithm.support; 5V<6_o
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import org.rut.util.algorithm.SortUtil; xLIyh7$t
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/** 8!v|`Ky
* @author treeroot `x=kb;
* @since 2006-2-2 tgBA(2/Co
* @version 1.0 n^QDMyC;I
*/ ;s3@(OnjZ
public class ShellSort implements SortUtil.Sort{ Rb<|
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d '2JMdbc
/* (non-Javadoc) >
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (NUXK
*/ +]t9kr
public void sort(int[] data) { >kAJS??
for(int i=data.length/2;i>2;i/=2){ =O8 YU)#
for(int j=0;j insertSort(data,j,i); #~j $J
} 4`~OxL
} ,dba:D=l
insertSort(data,0,1); R@WW@ Of
} C|}yE;*a
' q9Ejig
/** r;f\^hVy
* @param data HV`u#hZ7C
* @param j % /zHL?RqJ
* @param i G%gdI3h1Z
*/ ;\"Nekd|
private void insertSort(int[] data, int start, int inc) { @uC-dXA"
int temp; aJm5`az)
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R GV{KL
} N+SA$wG
} &>B|?d
} _6FDuCVD-
9^SrOW6~
} W(ZEqH2
jM*wm~4>@
快速排序: IAd^$9
.*k!Zl*
package org.rut.util.algorithm.support; ;2 o{6
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import org.rut.util.algorithm.SortUtil; m$Tt y[0
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/** ^umHuAAE
* @author treeroot Ahd{f!
* @since 2006-2-2 unL1/JY z
* @version 1.0 R U[
*/ FlS)m`
public class QuickSort implements SortUtil.Sort{ ?Wt_Obl
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/* (non-Javadoc) jbOzbxR?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~R|fdD/%
*/ AF{o=@
public void sort(int[] data) { 'iYaA-9j
quickSort(data,0,data.length-1); 7;}TNK\+v
} ku^2K
private void quickSort(int[] data,int i,int j){ *|+ ~V/#
int pivotIndex=(i+j)/2; kGq<Zmy|
file://swap }xrrHp
SortUtil.swap(data,pivotIndex,j); k!@/|]3z
f2|On6/
int k=partition(data,i-1,j,data[j]); 4z|Yfvq
SortUtil.swap(data,k,j); Y!E|X 3
if((k-i)>1) quickSort(data,i,k-1); 1?+)T%"
if((j-k)>1) quickSort(data,k+1,j); x^F2Ywp%
'.&,.E&{$
} Q[O U`
/** '9wD+'c=A
* @param data s|!b: Ms`
* @param i >|T?87
* @param j =7P; /EV
* @return ;`bJgSCfo
*/ MD:kfPQ
private int partition(int[] data, int l, int r,int pivot) { U|h@Pw z
do{ C vTgtZ
'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yC=vTzzp
SortUtil.swap(data,l,r); 7L:R&W6
} 8&f"")m
while(l SortUtil.swap(data,l,r); $0iN43WSQ
return l; Q;$/&Y*
} EVmE{XlD;
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} EZiGi[t7
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改进后的快速排序: 4sK|l|W
NU/~E"^I.
package org.rut.util.algorithm.support; DPtyCgH
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import org.rut.util.algorithm.SortUtil; s?K4::@Fv
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/** 5p{tt;9[
* @author treeroot WU,72g=
* @since 2006-2-2 $t</{]iX
* @version 1.0 f{z%P I[
*/ {78*SR
public class ImprovedQuickSort implements SortUtil.Sort { { K0T%.G
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p#
private static int MAX_STACK_SIZE=4096; M!6bf
private static int THRESHOLD=10; TbU9
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/* (non-Javadoc) Ez1*}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *&2#;mf3
*/ qV$',U*+T
public void sort(int[] data) { <db/. A3
int[] stack=new int[MAX_STACK_SIZE]; t_VHw'~"
:* /``
int top=-1; %J%gXk}]
int pivot; :~)Q] G1Nj
int pivotIndex,l,r; )J88gMk+
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stack[++top]=0; a
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stack[++top]=data.length-1; ;09J;sf
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while(top>0){ |)JoxqR
int j=stack[top--]; O-2H!58$)
int i=stack[top--]; ^9b
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pivotIndex=(i+j)/2; n_ez6{
pivot=data[pivotIndex]; GRV9s9^
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SortUtil.swap(data,pivotIndex,j); a@r K%Iff
tw3d>H`
file://partition 'IW+"o
l=i-1; )LhO}zQ
r=j; =<_5gR
do{ >`\*{]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OB^2NL~Q~
SortUtil.swap(data,l,r); =,]J"n8|v
} h5l
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while(l SortUtil.swap(data,l,r); x)yf!Dv5$
SortUtil.swap(data,l,j); EhUy7b,1_
tx1jBh:e=
if((l-i)>THRESHOLD){ z|?R=;,u`
stack[++top]=i; Po4cbFZ
stack[++top]=l-1; O`0$pn
} DVcu*UVw
if((j-l)>THRESHOLD){ n)7icSc
stack[++top]=l+1; G-(c+6Mn
stack[++top]=j; 6uXYZ.A
} :d2u? +F
KE&}*Nf[
} qtH&]Suu,
file://new InsertSort().sort(data); pz
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insertSort(data); 9f6TFdUi"y
}
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/** .M{[J]H`t
* @param data Q%xY/xH]
*/ ?(<AT]h V:
private void insertSort(int[] data) { 9c7}-Go
int temp; udZ: OU<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hw'2q9J|
} S7q&|nI
} "qm> z@K
} ">QY'r
bgK(l d`
} QPcB_wUqu
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归并排序: ) IhY&?jk?
GDB>!ukg
package org.rut.util.algorithm.support; %UJ4wm
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import org.rut.util.algorithm.SortUtil; *vO'Z &
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/** e,*[5xQ
* @author treeroot OA=;9AcZ
* @since 2006-2-2 19u?^w
* @version 1.0 ibc/x v2
*/ Xh/av[Q
public class MergeSort implements SortUtil.Sort{ ,6S8s
feW9>f;
/* (non-Javadoc) E\S&} K,s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bN&da
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*/ r?I(me,
public void sort(int[] data) { "'#Hh&Us
int[] temp=new int[data.length]; &Kp+8D*
mergeSort(data,temp,0,data.length-1); rw2|1_AF
} DS2$ w9!
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private void mergeSort(int[] data,int[] temp,int l,int r){ "y0A<-~
int mid=(l+r)/2; 9.=#4OH/
if(l==r) return ; \IfgL$+
mergeSort(data,temp,l,mid); (B-9M)
mergeSort(data,temp,mid+1,r); \8D~,$,``|
for(int i=l;i<=r;i++){ ,R =VzP&
temp=data; k >CtWV5B
} Z :+#3.4$3
int i1=l; *$$V,6O.
int i2=mid+1; >[@d&28b%
for(int cur=l;cur<=r;cur++){ pb
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if(i1==mid+1) ;#i$0~lRl
data[cur]=temp[i2++]; @GtZK
else if(i2>r) kwR@oVR^
data[cur]=temp[i1++]; vNSf:5H$
else if(temp[i1] data[cur]=temp[i1++]; z0[ZO1Fo(
else >2
qP
data[cur]=temp[i2++]; RWo B7{G
} !S-U8KI|
} [ d7]&i}*|
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} c7IR06E
.A/H+.H;
改进后的归并排序: }2,#[mM
6S[D"Q94
package org.rut.util.algorithm.support; 3= zQ
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import org.rut.util.algorithm.SortUtil; p d3&AsU
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/** a4RFn\4?
* @author treeroot U.'@S8
* @since 2006-2-2 n;`L5
* @version 1.0 3]es$ Jy
*/ ]?`p_G3O
public class ImprovedMergeSort implements SortUtil.Sort { 7~nCK
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private static final int THRESHOLD = 10; 34kd|!e,
SYPMoE!U:
/* l|em E
^
* (non-Javadoc) /*^|5>-`i1
* Z;\"pP:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~J{[]wi
*/ WUS9zK
public void sort(int[] data) { _ng= 5
int[] temp=new int[data.length]; C}'="g^=sl
mergeSort(data,temp,0,data.length-1); =>\-ma+
} /+`<X%^U
p30&JJ!~"
private void mergeSort(int[] data, int[] temp, int l, int r) { /t)c fFM
int i, j, k; ~"2@A
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int mid = (l + r) / 2; ca*[n~np
if (l == r) yGGB
return; :qTcxzV
if ((mid - l) >= THRESHOLD) (<ZkmIXN
mergeSort(data, temp, l, mid); 1DtMY|wP
else ko2j|*D6@~
insertSort(data, l, mid - l + 1); ]=VS~azZ5
if ((r - mid) > THRESHOLD) ?}v% JUcs
mergeSort(data, temp, mid + 1, r); >TnQ4^;v.
else |;m`874
insertSort(data, mid + 1, r - mid); 0DVZRB
&Z!K]OSY
for (i = l; i <= mid; i++) { H&Y{jqua
temp = data; CN~NyJL H
} PFy;qk
for (j = 1; j <= r - mid; j++) { 65#:2,s
temp[r - j + 1] = data[j + mid]; tlLn
} )z235}P
int a = temp[l]; {a8^6dm*E
int b = temp[r]; ]j2v"n
for (i = l, j = r, k = l; k <= r; k++) { Pph8"`mv.m
if (a < b) { TT ZxkK
data[k] = temp[i++]; *8.@aX3
a = temp; ]_: TrH
} else { !aw#',r8m
data[k] = temp[j--]; N^(lUba
b = temp[j]; l()MYuLNV
} 2, "q_d'V
} o?mXxL)
} N46$EsO!h
k7|z$=zY
/** G h[`q7B
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* @param data _OU.JrqC
* @param l ;i9<y8Dha
* @param i Vm;Qw
*/ j-`X_8W
private void insertSort(int[] data, int start, int len) { ~J>gVg%66
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =Cy>$/H64
} tK|9qs<%
} 1m<?Q&|m$
} !H|82:`t+
} Ryba[Fz4Di
3E!<p
堆排序: h>Uid
&:?
vo6[2.HS
package org.rut.util.algorithm.support; .d~]e2x
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import org.rut.util.algorithm.SortUtil; xPDA475Cw3
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/**
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* @author treeroot fHe0W
* @since 2006-2-2 FL#g9U>
* @version 1.0 Uy59zB2|=
*/ e4=FU&RpNH
public class HeapSort implements SortUtil.Sort{ ^/C$L8#
1 73<x){
/* (non-Javadoc) ,d>X/kd|o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?7kV+{.
*/ @9uYmkcV
public void sort(int[] data) { g7 Md
MaxHeap h=new MaxHeap(); -e{)v' C)
h.init(data); oa &z/`@
for(int i=0;i h.remove(); 9U=fJrj'u
System.arraycopy(h.queue,1,data,0,data.length); 5Hwo)S]r
} ?
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Uc&6=5~Ys\
private static class MaxHeap{ D,dHP-v
+-aU+7tu
void init(int[] data){ =l8!VJa
this.queue=new int[data.length+1]; 833%H`jQc
for(int i=0;i queue[++size]=data; uojh%@.4
fixUp(size); wAu[pWD'6;
} xv$)u<Ve
} JXL9Gge
@Xve qUUU
private int size=0; I>H;o{X#
%|*nmIPq(
private int[] queue; Foe>}6~{?
dgco*TIGO
public int get() { v;fJM5PA
return queue[1]; s~Lfi.
} 4FIV
uS,p|}Q&
public void remove() { QOT)x4!)
SortUtil.swap(queue,1,size--); Ns.3s7&
fixDown(1); (}{_]X|e
}
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file://fixdown >,>;)B@J
private void fixDown(int k) { aJ6#=G61l
int j; s-C!uq
while ((j = k << 1) <= size) { cXk6e.Uz
if (j < size %26amp;%26amp; queue[j] j++; ha|@ Xp
if (queue[k]>queue[j]) file://不用交换 .Na&I)udX.
break; S9HBr
SortUtil.swap(queue,j,k); -}Cc"qm
k = j; Mhe|eD#)
} ~5r=FF6
} <AI>8j6#B
private void fixUp(int k) { c Q(}^KO
while (k > 1) { -XBKOybHBO
int j = k >> 1; |;A9A's
if (queue[j]>queue[k]) DO&+=o`"
break; Hs"%
S
SortUtil.swap(queue,j,k); NqJ<!q)
k = j; ptV4s=G2
} _{6,.TN
} U@.u-)oX
;RWW+x8IB
} 8%o~4u3
lo+xo;Nd
} FOCoiocPi
p!+L
SortUtil: "_K}rI6(t
m<FF$pTT
package org.rut.util.algorithm; ${hyNt
8W~lU~-
import org.rut.util.algorithm.support.BubbleSort; O9t=lrYV!
import org.rut.util.algorithm.support.HeapSort; N@Xg5huO
import org.rut.util.algorithm.support.ImprovedMergeSort; !uWxRpT,7
import org.rut.util.algorithm.support.ImprovedQuickSort; -|m$YrzG
import org.rut.util.algorithm.support.InsertSort; owE<7TGPI?
import org.rut.util.algorithm.support.MergeSort; 29"mE;j
import org.rut.util.algorithm.support.QuickSort; EHpu*P~W
import org.rut.util.algorithm.support.SelectionSort; YXF#c)#
import org.rut.util.algorithm.support.ShellSort; 44|deE3Z
2?GXkPF2;A
/** bnijM/73
* @author treeroot wL'oImE
* @since 2006-2-2 94Xjz(
* @version 1.0 `[WyHO|8
*/ Bj@x$v#/^
public class SortUtil { <fNGhmL
public final static int INSERT = 1; r_Lu~y|
public final static int BUBBLE = 2; luW
<V>
public final static int SELECTION = 3; h ZoC _\
public final static int SHELL = 4; (E!%v`_0
public final static int QUICK = 5; |/@0~O(6
public final static int IMPROVED_QUICK = 6; A)8rk_92Q
public final static int MERGE = 7; qE>i,|rP`
public final static int IMPROVED_MERGE = 8; {bN Y
public final static int HEAP = 9; 6 -]>]Hr-
za,6du6
public static void sort(int[] data) { fC_zX}3
sort(data, IMPROVED_QUICK); }%eDEM
} &oA~
Tx
private static String[] name={ k_]\(myq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5B%w]n
}; GGCqtA^@7d
F(deu^s%{
private static Sort[] impl=new Sort[]{ %fHH{60
new InsertSort(), 1|W2s\
new BubbleSort(), T`uDlo
new SelectionSort(), X$/E>I
new ShellSort(), j*XjY[
new QuickSort(), >f>V5L%1
new ImprovedQuickSort(), /x$}D=(CZ
new MergeSort(), g{e/X~
new ImprovedMergeSort(), 21U&Ww
new HeapSort() >yX/+p_
}; -:MmSeG7gO
$u:<x
public static String toString(int algorithm){ $nj\\,(g
return name[algorithm-1]; V]Sgx00;
} zei6S
vruD U#
public static void sort(int[] data, int algorithm) { 5`"iq
"5Cf
impl[algorithm-1].sort(data); Qe_+r(3)k
} 2zhn`m
^[#=L4
public static interface Sort { 4iwf\#
public void sort(int[] data); {o( *
f
} )`^ /(YG
byafb+x
public static void swap(int[] data, int i, int j) { kL|\wci
int temp = data; rR\;G2p)
data = data[j]; Hj2<ZL
data[j] = temp; Hoj8okP
} vTdUuj3N
} sJOV2#r