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。 ?&Zfb
插入排序:
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package org.rut.util.algorithm.support; m&EJ@,H
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import org.rut.util.algorithm.SortUtil; O>YXvu
/** 7M~w05tPh
* @author treeroot ( Z-~Eh
* @since 2006-2-2 "c[ D0{\{
* @version 1.0 ]#n,DU}V
*/ nJ!`^X5I
public class InsertSort implements SortUtil.Sort{ qA4w*{JN
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/* (non-Javadoc) ;t'~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3B }Oy$p
*/ ,uEi*s>
public void sort(int[] data) { vA(V.s`
int temp; .8[Db1W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +bi%4DA
} r^<W$-#
} ?k$3( -
} PCxv_Svf
iqCZIahf
} dA;f`Bi;Q
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冒泡排序: `4Jlf!
d|UK=B^x
package org.rut.util.algorithm.support; zLQplw`#
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import org.rut.util.algorithm.SortUtil; %<x2=#0
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/** hhu!'(j
* @author treeroot :Oz! M&Ov
* @since 2006-2-2 FKU$HQw*
* @version 1.0 wyqXD.of
*/ uj@rv&
public class BubbleSort implements SortUtil.Sort{ MV"aO@
n:c)R8X]
/* (non-Javadoc) O=wA/T=w?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L_Q1:nL-0
*/ e<_p\LiOS
public void sort(int[] data) { Eeemy*U
int temp; XP
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for(int i=0;i for(int j=data.length-1;j>i;j--){ =;(w Bj
if(data[j] SortUtil.swap(data,j,j-1); Q_<CG[,6D1
} v#EXlpS
} ]d]tQPEU
} ~`Q8)(y<#$
} &PRu[!
'2+Rb7V
} 1n7tmRl
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选择排序: q.L0rY!
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package org.rut.util.algorithm.support; {9wBb`.n^
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import org.rut.util.algorithm.SortUtil; %;0Llxf"
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/** ^hOnLy2
* @author treeroot PfTjC"`,
* @since 2006-2-2 Y$8
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* @version 1.0 ]Y!$HT7\
*/ W2Y%PD9a
public class SelectionSort implements SortUtil.Sort { e6{}hiM
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/* W.h6g8|wx
* (non-Javadoc) GJW>8*&&(
* Hf
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +JE
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*/ <6k5nE h
public void sort(int[] data) { XYD}OddO
int temp; )]Xj"V2
for (int i = 0; i < data.length; i++) { V6'"J
int lowIndex = i; [4,=%ez
for (int j = data.length - 1; j > i; j--) { y~_wr}.CS
if (data[j] < data[lowIndex]) { 2T!pFcc
lowIndex = j; ;2K_u
} 09y%FzV
} 7VkT(xnm
SortUtil.swap(data,i,lowIndex); aL@myq.
} :|J'HCth
} *7<5 G{
:AYp{"{
} ffo{4er
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Shell排序: qYj
EQz
X-Y:)UT
package org.rut.util.algorithm.support; 0sW=;R2
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import org.rut.util.algorithm.SortUtil; Sw~jyUEr
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/** !gv/ jdF
* @author treeroot qX[a\HQa
* @since 2006-2-2 der'<Q.U:k
* @version 1.0 `(A>7;]:
*/ omQaN#!,
public class ShellSort implements SortUtil.Sort{ \O
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/* (non-Javadoc) ej dYh $
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uxF88$=!t
*/ B'\^[
public void sort(int[] data) { h?[3{Z ^
for(int i=data.length/2;i>2;i/=2){ [r%WVf.#d
for(int j=0;j insertSort(data,j,i); wzhM/Lmo\z
} 4;@|tC|u
} -miWXEe@l
insertSort(data,0,1); rnWU[U8%
} .ky((
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/** =pQA!u]QE
* @param data '3B`4W,
* @param j &!uw;|%
* @param i 37'@,*m`
*/ pfS?:f<+6"
private void insertSort(int[] data, int start, int inc) { y&T(^EA;
int temp; =~Oi:+L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dj,7lJy
} p@`rBzGp
} 0MDdcjqw
} 5&]|p'"W\
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} 2Eg*Yb 1
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快速排序: FtbqZN[
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package org.rut.util.algorithm.support; b'Cy!d r
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import org.rut.util.algorithm.SortUtil; -'&4No
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/** t/z]KdK P
* @author treeroot J{8_4s!Xt>
* @since 2006-2-2 #q. Q tDz
* @version 1.0 gIrVrAV#
*/ ldcYw@KQ
public class QuickSort implements SortUtil.Sort{ `c@KlL*!Q
AD$k`Cj
/* (non-Javadoc) m[&]#K6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IE*GF27n
*/ jSbO1 go#
public void sort(int[] data) { ZM"J5}h
quickSort(data,0,data.length-1); Gs$<r~Tg
} F. X{(8
private void quickSort(int[] data,int i,int j){ cQDn_Sjhi
int pivotIndex=(i+j)/2; ypEcjVPD
file://swap =&?}qa(P
SortUtil.swap(data,pivotIndex,j); I=)Hb?qT~
T-|SBNFw;
int k=partition(data,i-1,j,data[j]); hPtSY'_@_
SortUtil.swap(data,k,j); Q:?]:i/*
if((k-i)>1) quickSort(data,i,k-1); Kd}cf0
if((j-k)>1) quickSort(data,k+1,j); S N_!o2F2
VgG*y#Qf$
} ^44AE5TO
/** @2Xw17[f35
* @param data >*rsR R
* @param i vH_QSx;C#
* @param j 5`,qKJ
* @return K~**. NF-n
*/ clK3kBh~&
private int partition(int[] data, int l, int r,int pivot) { z VleJ!d
do{ A2 r1%}{
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [O*5\&6
SortUtil.swap(data,l,r); yiyyw,iy
} m=i 8o `
while(l SortUtil.swap(data,l,r); aWhhq@
return l; p]=a:kd4J
} GKdQ
{U8Sl.
} bTB/M=M
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改进后的快速排序: 2= FGZa*.
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package org.rut.util.algorithm.support; t4)~A5s
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import org.rut.util.algorithm.SortUtil; E/x``,k
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/** D?~`L[}I!}
* @author treeroot u 0KVp6`
* @since 2006-2-2 (Qmpz
* @version 1.0 Dp|y&x!
*/ 4:<74B
public class ImprovedQuickSort implements SortUtil.Sort { UZsL0
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private static int MAX_STACK_SIZE=4096; b||
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private static int THRESHOLD=10; E
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/* (non-Javadoc) FbB^$ ]*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CDcZ6.f
*/ F9(*MP|
public void sort(int[] data) { !4zSE,1
int[] stack=new int[MAX_STACK_SIZE]; T+p?VngF
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int top=-1; ^eke,,~
int pivot; &P'cf|KI
int pivotIndex,l,r; E0QrByr_
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stack[++top]=0; ~/LO @
stack[++top]=data.length-1; ZN75ONL
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while(top>0){ Dizc#!IGU
int j=stack[top--]; `j+aAxJ=\
int i=stack[top--]; WK;X6`
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pivotIndex=(i+j)/2; 9UlR fl
pivot=data[pivotIndex]; LbX>@2(&
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SortUtil.swap(data,pivotIndex,j); 07pASZ;~
F)dJws7-
file://partition :^~I@)"ov
l=i-1; ~)Z{ Yj9)S
r=j; u0^Vy#@_
do{ c^ $_epc*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x'dU[f(
SortUtil.swap(data,l,r); z8v] Kt &
} 9z>I&vcX
while(l SortUtil.swap(data,l,r); =[]V$<G'w{
SortUtil.swap(data,l,j); ^5j+O.zgN
CJ+/j=i;~c
if((l-i)>THRESHOLD){ f.Wip)g
stack[++top]=i; 9t)A_}O
stack[++top]=l-1; >TZ 'V,
} 5]_m\ zn=
if((j-l)>THRESHOLD){ nymF`0HYe1
stack[++top]=l+1; @)[Q6w`x
stack[++top]=j; 9g%1^$R
} Udj!y$?
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} ']Q4SB"q
file://new InsertSort().sort(data); T!-*; yu
insertSort(data); }le}Vuy\s
} pxf(C<y6_
/** O9%`G
* @param data {J#SpG 7
*/ XPJsnu
private void insertSort(int[] data) { 2HA-q),6
int temp; ?w^MnK0U)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `<Ry_}V
} 1f3c3PJ
} b'x26wT?
} g=G>4Ua3
f\p#3IwwH
} =&%}p[
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归并排序: Jcy{ ~>@7
zWs("L(#s
package org.rut.util.algorithm.support; $<NrJgQ
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import org.rut.util.algorithm.SortUtil; azK7kM~
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/** G4&vrM,f
* @author treeroot 6&J7=g%G
* @since 2006-2-2 ey/{Z<D
* @version 1.0 $O'IbA
*/ qV$\E=%fhM
public class MergeSort implements SortUtil.Sort{ 7\0}te
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/* (non-Javadoc) U ;%cp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Eyn0\OA
*/ o=zr]vv
public void sort(int[] data) { j^1Yz}6nR
int[] temp=new int[data.length]; i)!2DXn
mergeSort(data,temp,0,data.length-1); IGnP#@`5]
} ;_~9".'<d
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private void mergeSort(int[] data,int[] temp,int l,int r){ <5 )F9.$
int mid=(l+r)/2; |tr^
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if(l==r) return ; dZWO6k9[H
mergeSort(data,temp,l,mid); :pH3M[7
mergeSort(data,temp,mid+1,r); `R!%k]$
for(int i=l;i<=r;i++){ Ga]\~31NE
temp=data; koojF|H>
} cjp~I/U
int i1=l; jct|}U
int i2=mid+1; 6 h%,%
for(int cur=l;cur<=r;cur++){ elGwS\sw
if(i1==mid+1) s-801JpiJ
data[cur]=temp[i2++]; (V x2*Aw]
else if(i2>r) Gk']Ma2J}
data[cur]=temp[i1++]; yz<$?Gblz
else if(temp[i1] data[cur]=temp[i1++]; 5AbY 59
else XW.k%H4@
data[cur]=temp[i2++]; ^M)+2@6
} '
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} AM0CIRX$
TE9Iyl|=
} (M 2hK[
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改进后的归并排序:
^o87qr0g]
Ea)=K'Pz
package org.rut.util.algorithm.support; Ye| (5f
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import org.rut.util.algorithm.SortUtil; eiQ42x@Z
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/** Vq599M:)V
* @author treeroot l*
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* @since 2006-2-2 nR=!S5>S
* @version 1.0 USg,=YM
*/ &. MUSqo9
public class ImprovedMergeSort implements SortUtil.Sort { \1O
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private static final int THRESHOLD = 10; #p<(2wN
SyI\ulmL
/* jmG)p|6
* (non-Javadoc) }` YtXD-o
* R; ui
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7~~suQ{F4
*/ }X6w"
public void sort(int[] data) { ]$BC f4:
int[] temp=new int[data.length]; "/yS HB[
mergeSort(data,temp,0,data.length-1); Pm]lr|Q{I
} &
}7+.^
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private void mergeSort(int[] data, int[] temp, int l, int r) { B7wzF"
int i, j, k; 29^(weT"]
int mid = (l + r) / 2; e'sS",o*
if (l == r) ?kK3%uJy&
return; {9FL}Jrt
if ((mid - l) >= THRESHOLD) # w@FBFr@
mergeSort(data, temp, l, mid); |\Q2L;4C
else {PkR6.XhR
insertSort(data, l, mid - l + 1); n?>|2>
if ((r - mid) > THRESHOLD) qu\U^F
mergeSort(data, temp, mid + 1, r); -,+~W#n
else &;bey4_J
insertSort(data, mid + 1, r - mid); :Q,~Nw>
HV'M31m~q
for (i = l; i <= mid; i++) { ::_bEmk
temp = data; 2tg 07
} d)3jkHYEjj
for (j = 1; j <= r - mid; j++) { di(H-=9G62
temp[r - j + 1] = data[j + mid]; xSqr=^
} +,g!xv4Q
int a = temp[l]; uzI-1@`
int b = temp[r]; b%KcS&-6
for (i = l, j = r, k = l; k <= r; k++) { vw$b]MO!
if (a < b) { .mNw^>:cq
data[k] = temp[i++]; wwet90_g
a = temp; |S~$IFN4
} else { P @J)S ?
data[k] = temp[j--]; ;Ea8>
b = temp[j]; N{}8Zh4op
} V(XZ7<& {
} *8+HQ[[#
} ~Q#!oh'i
#?`S+YN!q)
/** #k1IrqUp
* @param data ~N/a\%`
* @param l R)4,f~@"
* @param i #C'E'g0
*/ pN_%>v"o
private void insertSort(int[] data, int start, int len) { sIbPMu`&U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Wsp c;]&
} +6}CNC9Mp
} Q"uK6ANp'
} L7n G5i
} '@
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堆排序: "Bwmq9Jq
15En$6>
package org.rut.util.algorithm.support; Q^=0p0
6nJQP a
import org.rut.util.algorithm.SortUtil; 6tjV^sjs
}#;.b'`
/** K<r5jb
* @author treeroot p] N/]2rR
* @since 2006-2-2 @h_ bXo
* @version 1.0 ,`OQAJ)>
*/ 4;>HBCM4-
public class HeapSort implements SortUtil.Sort{ -E3cS
s|:1z"q
/* (non-Javadoc) uL@%M8n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DF>tQ
*/ 9ZG:2ncdJ
public void sort(int[] data) { lFduX D
MaxHeap h=new MaxHeap(); xX9snSGz
h.init(data); dz>Jl},`k
for(int i=0;i h.remove(); X 5X D1[
System.arraycopy(h.queue,1,data,0,data.length);
H:9G/Nev
} S{v]B_N[M
RnU7|p{
private static class MaxHeap{ p@Cas
KT*>OYI
void init(int[] data){ eE=2~
ylU
this.queue=new int[data.length+1]; eMdf[eS
for(int i=0;i queue[++size]=data; (2QfH$HEk
fixUp(size); .)Pul|)d
} QSn18V>{
} @HSK[[?
Vp0_R9oQ
private int size=0; ^nNpT!o
`m8WLj
private int[] queue; !f&hVLs0
_ WPt
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public int get() { z]C=nXbk
return queue[1]; '-J<ib
t
} '?Q"[e
I} 5e{jBB
public void remove() { <5
OUk
SortUtil.swap(queue,1,size--); D`mr>-Y
fixDown(1); /3tErc'
} C^;8M'8z0
file://fixdown Iz-mUD0;
private void fixDown(int k) { 2K
o]Q_,~
int j; fH?A.JP=a
while ((j = k << 1) <= size) { -:"KFc8A
if (j < size %26amp;%26amp; queue[j] j++; 4\p%|G^hU
if (queue[k]>queue[j]) file://不用交换 8O(L;&h
break; q86}'dFw{
SortUtil.swap(queue,j,k); :ir3u
k = j; *)`PY4zF
} 5GgH6
} rFkZ'rp74b
private void fixUp(int k) { L6i|5 P
while (k > 1) { S:`Gi>D
int j = k >> 1; |HYST`
if (queue[j]>queue[k]) %G,7Ul1f
break; ]];pWlo!
SortUtil.swap(queue,j,k); -K(d]-yv
k = j; H_t0$x(\
} vr{|ubG]d
} $w <R".4
-y|']I^ &
} jAue+tB
)!cucY
} x3#:C=
p~=z)7%e'
SortUtil: ov H'_'
s]0 J'UN
package org.rut.util.algorithm; mCk_c
@ <2y+_e
import org.rut.util.algorithm.support.BubbleSort; rPyjr(I"_
import org.rut.util.algorithm.support.HeapSort; iM;Btv[|
import org.rut.util.algorithm.support.ImprovedMergeSort; V_D wHq2
import org.rut.util.algorithm.support.ImprovedQuickSort; DTM(SN8R+n
import org.rut.util.algorithm.support.InsertSort; Lk@+iHf
import org.rut.util.algorithm.support.MergeSort; frW\!r{LT
import org.rut.util.algorithm.support.QuickSort; M*D_pn&
import org.rut.util.algorithm.support.SelectionSort; Tp{jR<
import org.rut.util.algorithm.support.ShellSort; im9EV|;
&"gX
7cK8
/** U<=d@knH
* @author treeroot w+)wrJTtm
* @since 2006-2-2 Mp!1xx
* @version 1.0 aXQAm$/
>
*/ '0)`.
public class SortUtil { 3)LS#=
public final static int INSERT = 1; a9.255
public final static int BUBBLE = 2; XOQ0(e6
public final static int SELECTION = 3; f(eXny@Y
public final static int SHELL = 4; ';8 ,RTe
public final static int QUICK = 5; ;S$
public final static int IMPROVED_QUICK = 6; L;?F^RK{U
public final static int MERGE = 7; cJ@fJ|
public final static int IMPROVED_MERGE = 8; T,uF^%$@AQ
public final static int HEAP = 9; m9sck:g#L1
9a`~ K L
public static void sort(int[] data) { #W|Obc]K
sort(data, IMPROVED_QUICK); n3&h1-
} u9~Ncz
private static String[] name={ =_iYT044p
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EA1&D^nT
}; 4|I;z
Ja4M@z
private static Sort[] impl=new Sort[]{ &v1E)/q{Z
new InsertSort(), }` H{;A
h
new BubbleSort(), NS`hXf
new SelectionSort(), ^E\n^D-RV
new ShellSort(), }vOg9/[{
new QuickSort(), N%Y!{k5T7
new ImprovedQuickSort(), ohyq/u+y~A
new MergeSort(), pO5j-d*
new ImprovedMergeSort(), S^|`*%pq
new HeapSort() 0-{E% k
}; islHtX
VE
\o2l;1~
public static String toString(int algorithm){ I+.U.e^gx
return name[algorithm-1]; LEtGrA/%@b
} ~,KrL(jC
%3TioM[B
public static void sort(int[] data, int algorithm) { tWzB Qx
impl[algorithm-1].sort(data); $uFvZ?w&
} V_m!<sr (
i<>%y*+@
public static interface Sort { F:#5Edo}A
public void sort(int[] data); I ~YV&12
} }1[s ,
+aM[!pW(e
public static void swap(int[] data, int i, int j) { 7BwR ].
int temp = data; Pw]r&)I`y[
data = data[j]; nsXG@C S:
data[j] = temp; z)v o
} {{_v.d~1
} cfv:Ld m