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。 my%MXTm2
插入排序: eR:C?v
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package org.rut.util.algorithm.support; y1 a1UiHGP
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import org.rut.util.algorithm.SortUtil; :?SD#Vvrh.
/** 1;eWnb(
* @author treeroot 2$FH+wuW
* @since 2006-2-2 `j!XWh*$
* @version 1.0 CO`?M,x>
*/ w[OUGn'
public class InsertSort implements SortUtil.Sort{ @z>DJ>htN
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/* (non-Javadoc) ~9n30j%]s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L"}tJM.d
*/ d8K|uEHVz
public void sort(int[] data) { .:~E.b
int temp; z"f+;1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [I`:%y
} -9(pOwN
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} }Dx.;0*:
} ]Wtg.y6;
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} lESv
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冒泡排序: cc 0Tb
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package org.rut.util.algorithm.support; a]
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import org.rut.util.algorithm.SortUtil; Lr0:yo
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/** _fS4a134R
* @author treeroot (@V_47o
* @since 2006-2-2 |!{ Y:f;
* @version 1.0 `N8t2yF
*/ }VeE4-p B
public class BubbleSort implements SortUtil.Sort{ c&C*'c-r
z0@BBXQ`
/* (non-Javadoc) ox5WboL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z?u}?-b1\H
*/ 3%)@c P:?
public void sort(int[] data) { (C0Wty
int temp; UjS+Ddp
for(int i=0;i for(int j=data.length-1;j>i;j--){ /[E2+g
if(data[j] SortUtil.swap(data,j,j-1); b>Ea_3T/
} OAf}\
} [ps4i_
} |G_, 1$
} l2ie\4dK@
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} jXPbj.
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选择排序: zI4d|P
9 !$&1|,*
package org.rut.util.algorithm.support; ~BMUea(
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import org.rut.util.algorithm.SortUtil; 3!{Tw6A8(
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/** 5=
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* @author treeroot w)&?9?~
* @since 2006-2-2 rE]Nr ;Ys
* @version 1.0 pog
*/ NS-0-o|4#
public class SelectionSort implements SortUtil.Sort { ZsSW{ffZ77
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/* _qk
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* (non-Javadoc) I51I(QF=
* ~F%sO'4!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q1v7(`O
*/ vo(:g6$
public void sort(int[] data) { *HB 32 =qD
int temp; gegM&Xo
for (int i = 0; i < data.length; i++) { H4W!Md
int lowIndex = i; '2
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for (int j = data.length - 1; j > i; j--) { 7M8 cF>o
if (data[j] < data[lowIndex]) { -ijzo%&qA
lowIndex = j; cbl>:ev1h
} _D$1CaAYo
} +;4;~>Y
SortUtil.swap(data,i,lowIndex); xT(0-o*
} e+)y6Q=
} hu.p;A3p;
g#`}HuPoE
} e4|a^lS;
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Shell排序: R+z'6&/ =I
Kp^"<%RT
package org.rut.util.algorithm.support; ;"Aj80
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import org.rut.util.algorithm.SortUtil; B):ZX#
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/** ^+~5\c*
* @author treeroot cQ'x]u_
* @since 2006-2-2 3iUJ!gK
* @version 1.0 :s\zk^h?
*/ ~!=Am:-wr
public class ShellSort implements SortUtil.Sort{ hQ(^;QcSu
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j
/* (non-Javadoc) |}UA=? Xl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KDP"z
*/ iJj!-a:z.
public void sort(int[] data) { R !yh0y}Z
for(int i=data.length/2;i>2;i/=2){ )_\ ;l%&
for(int j=0;j insertSort(data,j,i); W?"l6s
} ?XP4kjJ
} D+BiclJ
insertSort(data,0,1); ?|WoNA~j}`
} ;Yv{)@'Bc
P j,H]
/** 8:)[.
* @param data ?zQW9e
* @param j &iZt(XD
* @param i K\xnQeS<W
*/ QT
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private void insertSort(int[] data, int start, int inc) { m.!LL]]
int temp; <VSB!:ew
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TGU7o:2
}
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} QAt]sat
} ?3a=u<
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} P{9wJ<
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快速排序: ?@Q0;LG
}EYmz/nN
package org.rut.util.algorithm.support; :5$ErI
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import org.rut.util.algorithm.SortUtil; lJN#_V0qW
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/** rsa_)iBC
* @author treeroot U;IGV~oT
* @since 2006-2-2 $MGKGWx@E
* @version 1.0 ,X1M!'
*/ CM$&XJzva
public class QuickSort implements SortUtil.Sort{ rk4KAX_[
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/* (non-Javadoc) jMCd`Q]K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q,<l3r In
*/ 6rj iZ%
public void sort(int[] data) { xf/K+
quickSort(data,0,data.length-1); .AOc$Nt
} mtkZF{3Jx
private void quickSort(int[] data,int i,int j){ M$Ui=GGq
int pivotIndex=(i+j)/2; "U"fsAc#
file://swap 0^\H$An*k
SortUtil.swap(data,pivotIndex,j); S.Kcb=;"L
j,;f#+O`g
int k=partition(data,i-1,j,data[j]); SXYwhID=
SortUtil.swap(data,k,j); &WLN
if((k-i)>1) quickSort(data,i,k-1); R9^vAS4t[O
if((j-k)>1) quickSort(data,k+1,j); H\n6t-l
wr:W}Z@pL
} H ?9Bo!
/** ;dMr2y`6
* @param data jA;b2A]G
* @param i ezbk@no
* @param j ^|6#Vx
* @return YpXd5;'
*/ `GBJa k
private int partition(int[] data, int l, int r,int pivot) { AzF*4x
do{ 74:( -vS
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Te~jYkCd
SortUtil.swap(data,l,r); |f$ws R`&
} f*rub. y
while(l SortUtil.swap(data,l,r); DJ7ak>"R
return l; p7Zeudmj
} )m3emMO2
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/
} <*z'sUh+}
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改进后的快速排序: wBg?-ji3<
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package org.rut.util.algorithm.support; ?lgE9I]
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import org.rut.util.algorithm.SortUtil; X_nbNql
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/** )quQI)Ym
* @author treeroot r}e(MT:R'
* @since 2006-2-2 -6uLww=w4
* @version 1.0 {+cx} `
*/ U';)]vB$
public class ImprovedQuickSort implements SortUtil.Sort { [tSv{
f. >[ J
private static int MAX_STACK_SIZE=4096; LgX2KU"
private static int THRESHOLD=10; 8YE4ln
/* (non-Javadoc) YU0pWM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^`dMjeF
*/ *oIIcE4g7
public void sort(int[] data) { 0S; Ipg
int[] stack=new int[MAX_STACK_SIZE]; t4d/%b~{:U
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int top=-1; 0vDvp`ie#4
int pivot; i( +Uv tgs
int pivotIndex,l,r; 5uSg]2:
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stack[++top]=0; g'T L`=O
stack[++top]=data.length-1; 7b-[# g
9Z=hg[`]<
while(top>0){ kSol%C
int j=stack[top--]; W7~_XI
int i=stack[top--]; >YXb"g@.
~2XGw9`J2
pivotIndex=(i+j)/2; |5FEsts[
pivot=data[pivotIndex]; }*%=C!m4R!
>wb*kyO7(#
SortUtil.swap(data,pivotIndex,j); Pq35w#`!
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p
file://partition 5>CeFy
l=i-1; --TH6j"
r=j; n%;t Va
do{ fM:bXR2Y'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); kO^
SortUtil.swap(data,l,r); 2,B^OZmw
} pX>wMc+
while(l SortUtil.swap(data,l,r); Ekrpg^3qp"
SortUtil.swap(data,l,j); ak3WER|f#
1 YtY=
if((l-i)>THRESHOLD){ Ktzn)7-
stack[++top]=i; 7KRNTnd
stack[++top]=l-1; 5oYeUy>N
} Fd80T6[
if((j-l)>THRESHOLD){ `LIlR8&@aX
stack[++top]=l+1; hHcevSr
stack[++top]=j; ujX\^c
} 2++$ Ql/
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} n]5Pfg|a
file://new InsertSort().sort(data); 0{o 8-#
insertSort(data); ;YQ6X>
} Yu&\a?]\2
/** >tL"8@z9
* @param data X,o ]tgg=
*/ Gb Mu;CA
private void insertSort(int[] data) { 2y8FP#
int temp; ;9=4]YZt
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G+C{_o#3
} E6G;fPd= E
} Kb5}M/8
} /Z#AHfKF
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} e*Nm[*@UW
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归并排序: l{ fL~O
c[OQo~m$
package org.rut.util.algorithm.support; M5`m5qc3
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import org.rut.util.algorithm.SortUtil; *x2u
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/** }gX4dv
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* @author treeroot Z,XivU&
* @since 2006-2-2 flBJO.2
* @version 1.0 #^i+'Z=L
*/ j}jU.\*v<
public class MergeSort implements SortUtil.Sort{ +'` ^ N
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/* (non-Javadoc) b_~KtMO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'e
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*/ H0.&~!,*
public void sort(int[] data) { l$!NEOK
int[] temp=new int[data.length]; ke +\Z>BWN
mergeSort(data,temp,0,data.length-1); ]Qx-f*
D6
} ,0>_(5
X)[QEq^
private void mergeSort(int[] data,int[] temp,int l,int r){ L`^v"W()
int mid=(l+r)/2; o+<hI
if(l==r) return ; ROfke.N\'
mergeSort(data,temp,l,mid); 3i}$ ~rz]U
mergeSort(data,temp,mid+1,r); _1$+S0G;
for(int i=l;i<=r;i++){ | 8n,|%e
temp=data; yAel4b/}
} 0b,{4DOD
int i1=l; {`L,F
int i2=mid+1; !:g\Fe]
for(int cur=l;cur<=r;cur++){ 9B3}LVg\
if(i1==mid+1) *(*XNd||
data[cur]=temp[i2++]; E@="n<uS
else if(i2>r) (%M:=zm
data[cur]=temp[i1++]; 9 &Od7Cn
else if(temp[i1] data[cur]=temp[i1++]; k}{K7,DM
else n^epC>a" b
data[cur]=temp[i2++]; d
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} [vCZD8"Y8
} _j_c&
:Sk<0VVd7
} 1;MUemnx`
qRZLv7X*j
改进后的归并排序: y=}a55:qE
mO\=#Q>
package org.rut.util.algorithm.support; jin?;v
r3Ih]|FK#
import org.rut.util.algorithm.SortUtil; E|B1h!!\c
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/** !{oP'8Ax$
* @author treeroot ou&7v<)x4
* @since 2006-2-2 kca Y
* @version 1.0 y {Mh ?H
*/ $4TawFf"nc
public class ImprovedMergeSort implements SortUtil.Sort { 2 BwpxV8
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private static final int THRESHOLD = 10; @ j4~`~8
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/* /lvH p
* (non-Javadoc) UC9w T
* SRk-3 :
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X_I.f6v{
*/ #+P)X_i`
public void sort(int[] data) { zhde1JE
int[] temp=new int[data.length]; 4\8k~#
mergeSort(data,temp,0,data.length-1); -Ar 3>d
} nHL(v
7Rom#Kl:
private void mergeSort(int[] data, int[] temp, int l, int r) { _$4vk
int i, j, k; /E6Tt
int mid = (l + r) / 2; DfP
vi1
if (l == r) +f?xVW<h
return; 3gmu-tv
if ((mid - l) >= THRESHOLD) ps?B;P
mergeSort(data, temp, l, mid); .gHL(*1P
else ;0\
insertSort(data, l, mid - l + 1); b;sjw5cm_
if ((r - mid) > THRESHOLD) v~HfA)#JK
mergeSort(data, temp, mid + 1, r); -U_<:
else YJrZ
insertSort(data, mid + 1, r - mid); X?.LA7 )CK
FY]z*=
for (i = l; i <= mid; i++) { 1Xu^pc
temp = data; %(wa~:m+S-
} qdVExO&
for (j = 1; j <= r - mid; j++) { L~(`zO3f
temp[r - j + 1] = data[j + mid]; )u'("
} &+t,fwlM
int a = temp[l]; >@d=\Kyu
int b = temp[r]; *gzX=*;x+?
for (i = l, j = r, k = l; k <= r; k++) { 7":0CU%%
if (a < b) { 7J2i /m
data[k] = temp[i++]; g8w5X!Z
a = temp; b$ )XS
} else { yq>3IS4O
data[k] = temp[j--]; MA:8gD
b = temp[j]; +#y[sKa
} E>?T<!r~j
} Tp/+{|~
} )zVD!eG_9
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/** "n@=.x
* @param data iP JZ%
* @param l 8[;U|SR"
* @param i -xf=dzm)
*/ G%K<YyAP
private void insertSort(int[] data, int start, int len) { } Pc6_#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &wZ:$lK#o
} '4qi^$|\
} ~?{@0,$
} dKyX70Zy9
} e]{X62]
aKC3T-
堆排序: b9([)8
S\jN:o#b
package org.rut.util.algorithm.support; scUWI"
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import org.rut.util.algorithm.SortUtil; "U&
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/** x_\e&"x
* @author treeroot @[S\ FjI
* @since 2006-2-2 %-:6#bz
* @version 1.0 8P'>%G<m
*/ Piz/vH6M}
public class HeapSort implements SortUtil.Sort{ d+fig{<b
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/* (non-Javadoc) iffRGnN^e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "ND 7,rQ
*/
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public void sort(int[] data) { DY{JA
*N
MaxHeap h=new MaxHeap(); @&2bLJJ+
h.init(data); j=d@Ih*
for(int i=0;i h.remove(); 3&-BO%i
System.arraycopy(h.queue,1,data,0,data.length); p9 |r y+t
} Rj%q)aw'
}o?@
private static class MaxHeap{ DP*[t8
8\t~*@"
void init(int[] data){ mY3x
(#I
this.queue=new int[data.length+1]; m`-{ V<(M
for(int i=0;i queue[++size]=data; H6*d#!
fixUp(size); $3%EKi
} I/MYS5}
} Zl.}J,0F
/ '}O-h
private int size=0; )fR'1_
O&irgc!
private int[] queue; %Ow,.+m
1NT@}j~/
public int get() { z/N~HSh!d
return queue[1]; <$HP"f+<S5
} /'p(X~X:l
'LR5s[$j
public void remove() { }dE0WJcO
SortUtil.swap(queue,1,size--); FbHk6(/)
fixDown(1); UMw1&"0:
} ?
S>"yAoe
file://fixdown %Sfew/"R0
private void fixDown(int k) { hHdH#-O:4"
int j; <D
pi M`
while ((j = k << 1) <= size) { qV.*sdS>
if (j < size %26amp;%26amp; queue[j] j++; +X0?bVT
if (queue[k]>queue[j]) file://不用交换 i}+K;,Da:8
break; sL
XQ)Ce
SortUtil.swap(queue,j,k); 4jj@"*^a
k = j; k|nv[xY0
} c ++tk4
} do%6P^qA
private void fixUp(int k) { 2|Hq[c=~
while (k > 1) { RpR;1ktF>
int j = k >> 1; QkwBw^'_5
if (queue[j]>queue[k]) ED @9,W0
break; Dw?nf
SortUtil.swap(queue,j,k); 7
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k = j; <`b)56v:+
} U*=ebZno
} uG2Hzav
J(VJMS;_
} c:4M|t=
*K'(t
} soXeHjNl
x\GCsVy
SortUtil: f 6Bx>lh
InMF$pw
package org.rut.util.algorithm; +hRAU@RA
*obBo6!zM
import org.rut.util.algorithm.support.BubbleSort; gyJ$Jp
import org.rut.util.algorithm.support.HeapSort; !iA0u
import org.rut.util.algorithm.support.ImprovedMergeSort; Q\Fgc ;.U
import org.rut.util.algorithm.support.ImprovedQuickSort; \;}F6g
import org.rut.util.algorithm.support.InsertSort; )&<BQIv9/
import org.rut.util.algorithm.support.MergeSort; me#VCkr#
import org.rut.util.algorithm.support.QuickSort; kf>oZ*/
import org.rut.util.algorithm.support.SelectionSort; a8FC#kfq
import org.rut.util.algorithm.support.ShellSort; xf?*fm?m
Y'`w.+9
/** ne4hR]:
* @author treeroot _K3?0<=4
* @since 2006-2-2 S
v$%-x^t
* @version 1.0 * f=H#
*/ a1_7plg
public class SortUtil { OW\r }
public final static int INSERT = 1; gh|TlvnA
public final static int BUBBLE = 2; m@R!o
public final static int SELECTION = 3; )Y+n4UL3NK
public final static int SHELL = 4; X<m#:0iD
public final static int QUICK = 5; [*Nuw_l
public final static int IMPROVED_QUICK = 6; VChNDHiH
public final static int MERGE = 7; +;tXk
public final static int IMPROVED_MERGE = 8; U@!e&QPn
public final static int HEAP = 9; +LCpE$H
F?? })YX
public static void sort(int[] data) { o
nt8q8
sort(data, IMPROVED_QUICK); D$+9`
} T$)&8"Xya
private static String[] name={ +6-c<m|
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" nxkbI:+t
}; H[UV]qO,
-uXf?sTV
private static Sort[] impl=new Sort[]{ (;;%B =
new InsertSort(), *Fb]lM7D
new BubbleSort(), +hI:5(_
new SelectionSort(), Va"Q1 *"
new ShellSort(), fgK1+sW
new QuickSort(), Pk !RgoWF
new ImprovedQuickSort(), Tz[ck'k
new MergeSort(), [QEV6S]
new ImprovedMergeSort(), \wEHYz
new HeapSort() w5w,jD[
}; OOn{Wp
t<wjS|4
public static String toString(int algorithm){ (-viP
return name[algorithm-1]; W+d=BnOa8
} U1}-]^\
+Kw:z?
public static void sort(int[] data, int algorithm) { ?55t0
impl[algorithm-1].sort(data); :sAb'6u1EU
} gQMcQV]C$
1t
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public static interface Sort { Jd?N5.
public void sort(int[] data); kVR_?ch{
} k ! l\|~
tBC`(7E}
public static void swap(int[] data, int i, int j) { v1h\
6r'
int temp = data; r==d^
data = data[j]; IcRA[
g
data[j] = temp; d$qivct
} f]%:.N~1w
} 5]pvHc