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。 PR7bu%Y*eD
插入排序: A#~CZQY^$
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package org.rut.util.algorithm.support; wjID*s[
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import org.rut.util.algorithm.SortUtil; W}(xE?9&
/** v%c--cO(S4
* @author treeroot JKYl
* @since 2006-2-2 M|z4Dy
* @version 1.0 4%jSqT@
*/ 3XjY
public class InsertSort implements SortUtil.Sort{ rJd-e96
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/* (non-Javadoc) NTM.Vj
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z{>
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*/ UUgc>
public void sort(int[] data) { ]'i}}/}u2
int temp; #)%dG3)e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -Ze2]^#dl
} );z/
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} ^zS|O]Tx
} wAF#N1-k
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} g>f_'7F&
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冒泡排序: TbR
Ee;1
u@[JX1&3"n
package org.rut.util.algorithm.support; =G/`r!r*0I
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import org.rut.util.algorithm.SortUtil; O#D
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/** '%A*Z,f
* @author treeroot Nf{tC9l
* @since 2006-2-2 a<Ptm(,
* @version 1.0 XbAoW\D(
*/ FHu+dZ
public class BubbleSort implements SortUtil.Sort{ OOX}S1lA
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/* (non-Javadoc) '^6x-aeq[D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RV+0C&0ff
*/ 6Yx/m
public void sort(int[] data) { o4pe>hn
int temp; < G:G/
for(int i=0;i for(int j=data.length-1;j>i;j--){ k39;7J
if(data[j] SortUtil.swap(data,j,j-1); IOOAaa @(
} q]o^Y
} y]ZujfW7
} a)Ca:p
} "@)9$-g
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} p8MPn>h<
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选择排序: 9AdA|/WV
U:
Q&sq8U
package org.rut.util.algorithm.support; S+(-k0
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import org.rut.util.algorithm.SortUtil; $]yHk
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/** Z6`[dAo
* @author treeroot ;4 ON
* @since 2006-2-2 mN:p=.&
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* @version 1.0 5 J9,/M0
*/ UjU*`}k3
public class SelectionSort implements SortUtil.Sort { sC.aT(meJ
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/* Z>H
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* (non-Javadoc) 0
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* ESl</"<J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !h0#es\
*/ g"iLhm`L
public void sort(int[] data) { >)3[CU,
int temp; .:b|imgiv
for (int i = 0; i < data.length; i++) { [nam H a
int lowIndex = i; RMx$]wn_
for (int j = data.length - 1; j > i; j--) { C"P40VQoo
if (data[j] < data[lowIndex]) { }G#TYF}
lowIndex = j; czV][\5
} Kf$%C"
} 1 f;k)x
SortUtil.swap(data,i,lowIndex); g=
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} bI,gNVN=
} BQcrF{q
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} aD1G\*AFJ
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Shell排序: f"j"ZM{~U
pUs s_3
package org.rut.util.algorithm.support; w7?&eF(w(
J<<0U;
import org.rut.util.algorithm.SortUtil; e.<$G'
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/** ]e'Ol$3U9=
* @author treeroot y^#jM
* @since 2006-2-2 K>2mm!{
* @version 1.0 q#$4Kt;
*/ 8v},&rhPQq
public class ShellSort implements SortUtil.Sort{ DA_[pR
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/* (non-Javadoc) MjAF&bD^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =#AeOqs( q
*/ d?RKobk
public void sort(int[] data) { ik@g; >pQD
for(int i=data.length/2;i>2;i/=2){ I-E}D"F;p[
for(int j=0;j insertSort(data,j,i); 0jsU^m<g
} ZE@!s3\
} sglYT!O
insertSort(data,0,1); HG2i^y
} (%huWW
j
em
/** ]>NP?S
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* @param data }xx[=t=nUf
* @param j Ds4n>V,o
* @param i :xitV]1.
*/ 4#$~gTc@
private void insertSort(int[] data, int start, int inc) { m L#-U)?F
int temp; sjpcz4|K
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jg]_'^pVzr
}
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} %t&n%dhJ
} >y C1X|d~t
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} =,q,W$-
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快速排序: <KF|QE
Xqt3p6
package org.rut.util.algorithm.support; -iu7/4!j
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import org.rut.util.algorithm.SortUtil; {AbQaw
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/** _T6l*D
* @author treeroot 6/ir("LK
* @since 2006-2-2 -~O7.E(ok
* @version 1.0 pqmS
w
*/ ^nu~q+:+#
public class QuickSort implements SortUtil.Sort{ jm1f,=R
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/* (non-Javadoc) b4GD}kR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g9>
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*/ fZK&h.
public void sort(int[] data) { LeBuPR$
quickSort(data,0,data.length-1); 3+mC96wN
} %N#8D<ULd
private void quickSort(int[] data,int i,int j){ {&,9Zy]"S
int pivotIndex=(i+j)/2; QiB^U^f
file://swap H79XP. TtE
SortUtil.swap(data,pivotIndex,j); 0 1U/{D6D
^vXMX^*
int k=partition(data,i-1,j,data[j]); hsIC5@s3
SortUtil.swap(data,k,j); _-aQ.p ?T
if((k-i)>1) quickSort(data,i,k-1); BdcTKC
if((j-k)>1) quickSort(data,k+1,j); |7Fe~TC
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} \I J\
/** -oo&8
* @param data vL"U=Q+/eY
* @param i a+!#cQl
* @param j X;Tayb
* @return d;`bX+K
*/ Q2sX7
cE
private int partition(int[] data, int l, int r,int pivot) { t_HS0rxG
do{ ~^*IP1.3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i$HA@S
SortUtil.swap(data,l,r); VT1Nd
} aa:Oh^AJy
while(l SortUtil.swap(data,l,r); Fy!uxT-\
return l; ^:g8mt
} K7 >Z)21
+JoE[;
} / sI0{
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改进后的快速排序: pp{Za@j
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package org.rut.util.algorithm.support; )SG+9!AbMZ
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import org.rut.util.algorithm.SortUtil; '"C$E922
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/** d<mj=V@bd
* @author treeroot n_5m+
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* @since 2006-2-2 `OzcL
* @version 1.0 ax{+7 k
*/ 4%wP}Zj#
public class ImprovedQuickSort implements SortUtil.Sort { n(^{s5 Rr
n"YY:Gm;8
private static int MAX_STACK_SIZE=4096; e(7F| G*
private static int THRESHOLD=10; lA[BV7.=7
/* (non-Javadoc) L{fKZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WE""be8
*/ uM"G)$I\
public void sort(int[] data) { PLDg'4DMg
int[] stack=new int[MAX_STACK_SIZE]; "&;>l<V
S;#S3?G
int top=-1; Zcq'u
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int pivot; LGx]z.30B
int pivotIndex,l,r; ?f!w:zp
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stack[++top]=0; pyA;%vJn
stack[++top]=data.length-1; 5B3S]@%
"~~Js~
while(top>0){ A[QUFk(
int j=stack[top--]; x(J|6Ey7!n
int i=stack[top--]; O>]I!n`!!A
9\9:)q
pivotIndex=(i+j)/2; @~pIyy\_
pivot=data[pivotIndex]; 5Vo8z8]t`
xa+=9=<AQ
SortUtil.swap(data,pivotIndex,j); 0k"n;:KM8
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file://partition 9?"]dEM
l=i-1; E.V#Bk=
r=j; eZes) &4
do{ $X1T!i[.X
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O iRhp(
SortUtil.swap(data,l,r); +"1@6,M
} ;T1OXuQ
while(l SortUtil.swap(data,l,r); +&?#Gdb
SortUtil.swap(data,l,j); S<Z]gY @c
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if((l-i)>THRESHOLD){ Zpfsh2`
stack[++top]=i; ;Fw{p{7<
stack[++top]=l-1; ^P30g2gv>
} m-V_J`9"
if((j-l)>THRESHOLD){ [n%=2*1p
stack[++top]=l+1; 9H^$cM9C
stack[++top]=j; fTb&k;'LR<
} +OSF0#bj
$tKz|H)
} QD6<sw@]P
file://new InsertSort().sort(data); u-v/`F2wN
insertSort(data); WI@l2`X
} XcN"orAo
/** zfS0M
* @param data 05o +VF;z
*/ mn5y]:;`
private void insertSort(int[] data) { {yXpBS
int temp; +5AWX,9,-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PfF5@W;E;
} jtS-nQ|
} "d1~(0=6<m
} -zn$h$N4
d v8q&_
} {=3&_/9s){
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归并排序: EV=/'f[++
3^!Y9$y1
package org.rut.util.algorithm.support; 5?] Dn k.o
t4Q&^AC
import org.rut.util.algorithm.SortUtil; =}F}XSvXH
NW=gi
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/** )4O>V?B
* @author treeroot qcVmt1"
* @since 2006-2-2 V -X*e
* @version 1.0 G;jX@XqZ
*/ Bp:PAy
public class MergeSort implements SortUtil.Sort{ HpCTQ\H
w20)~&LE-
/* (non-Javadoc) =lb5 #
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8'<RPU}M
*/ uT#4"G9A[
public void sort(int[] data) { |BA&ixHe~C
int[] temp=new int[data.length]; (R^qY"H
2
mergeSort(data,temp,0,data.length-1); T<ka4
} xR~9|H9a
>;s!X(6b
private void mergeSort(int[] data,int[] temp,int l,int r){ $cSmub ZK
int mid=(l+r)/2; 8T523VI
if(l==r) return ; rbw~Ml0
mergeSort(data,temp,l,mid); +,q#'wSQG
mergeSort(data,temp,mid+1,r); o;[cApiQ,2
for(int i=l;i<=r;i++){ qk}Mb_*C)
temp=data; j=kz^o~mH
} k*u4N
int i1=l; $?*XPzZ
int i2=mid+1; =WEWs4V5A
for(int cur=l;cur<=r;cur++){ ,>3b|-C-
if(i1==mid+1) yc7"tptfF
data[cur]=temp[i2++]; KN<KZM
else if(i2>r) pY$DOr-r`
data[cur]=temp[i1++]; Ue&I]/?;$
else if(temp[i1] data[cur]=temp[i1++]; [M#I Nm}
else n2N:rP
data[cur]=temp[i2++]; SYYg
2I
} dF+R
q|n{
} rCsH
0:l8P
h[& \OD,P
} Hdda/?{b
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改进后的归并排序: ,|^ lqY
91oAg[@4G
package org.rut.util.algorithm.support; 4"et4Y7
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/e&,
import org.rut.util.algorithm.SortUtil; oTb4 T=
t@cImmh\T
/** *?R<gWCF
* @author treeroot ia*Bcx_RW+
* @since 2006-2-2 5
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* @version 1.0 4mci@1K#^
*/ W@WKdaJ
public class ImprovedMergeSort implements SortUtil.Sort { fctVJ{?
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private static final int THRESHOLD = 10; D {N,7kT
AkX8v66:
/* pP*`b<|
* (non-Javadoc) %&&;06GU}
* v]U0@#/p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r!)jxIL\
*/ ^2eH0O!
public void sort(int[] data) { OcZ8:`=%
int[] temp=new int[data.length]; E-b3#\^:
mergeSort(data,temp,0,data.length-1); e"]DIy4s
} e)kVS}e?
D`@*udn=
private void mergeSort(int[] data, int[] temp, int l, int r) { o0FVVS l
int i, j, k; 9RnXp&w
int mid = (l + r) / 2; \Z/#s;c,4
if (l == r) `cpUl*Y=
return; `t Zw(Z=h
if ((mid - l) >= THRESHOLD) zf?U q
mergeSort(data, temp, l, mid); wKj0vMW
else $LJCup,1"
insertSort(data, l, mid - l + 1); 7gP8K`w?[
if ((r - mid) > THRESHOLD) xYD.j~
mergeSort(data, temp, mid + 1, r); #]e](j>]
else H<C+rAIb
insertSort(data, mid + 1, r - mid); '/GZ,~q
8\9s,W:5
for (i = l; i <= mid; i++) { Nh+ZSV4WJ:
temp = data; zH1:kko
} I;3Uzv
for (j = 1; j <= r - mid; j++) { O>Ao#_*hOb
temp[r - j + 1] = data[j + mid]; ?%wM 8?
} WG(%Pkowv
int a = temp[l]; Q??nw^8Hi
int b = temp[r]; }@NT#hD
for (i = l, j = r, k = l; k <= r; k++) { 707-iLkt.1
if (a < b) { ~4C:2
data[k] = temp[i++]; [cvtF(,
a = temp; WJ
m:?,
} else { 7 J+cs^2
data[k] = temp[j--]; "%fvA;
b = temp[j]; 8jm\/?k|
} 7) e#b
} 5Q.z#]Lg
} mZb[Fi
}5a$Ka-
/** )1 =|\
* @param data =VM4Q+'K
* @param l /%5X:*:H
* @param i BHEZ<K[U
*/ /8tF7Mmr
private void insertSort(int[] data, int start, int len) { aIW W[xZ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *w_f-YoXp
} .~yz1^ c
} OX*5 yT{
} {5N!udLDr5
} h!UB#-
[t}$W*hY
堆排序: M~#%
[?iU
;yVT:qd
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package org.rut.util.algorithm.support; >djTJ>dl_u
a>/cVu'kz
import org.rut.util.algorithm.SortUtil; t_Rpeav
LAfv1
/** KD)+&69
* @author treeroot X__>r ?oJ
* @since 2006-2-2 -L)b;0%
* @version 1.0 Z2wgfP`
*/ f0,,<ib.w
public class HeapSort implements SortUtil.Sort{ dJYQdo^X
~Q/G_^U:
/* (non-Javadoc) T($6L7 j9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -yH8bm'0"
*/ e-.s63hm
public void sort(int[] data) { `OWw<6`k
MaxHeap h=new MaxHeap(); &@anv.D
h.init(data); D%=FCmL5@=
for(int i=0;i h.remove(); />E:}1}{
System.arraycopy(h.queue,1,data,0,data.length); eX9Hwq4X44
} BvA09lK
t)hAD_sf
private static class MaxHeap{ aur4Ky> :
[~_()i=Y
void init(int[] data){ <R>%DD=v^
this.queue=new int[data.length+1]; /o)o7$6Q
for(int i=0;i queue[++size]=data; bRzw.(k0`r
fixUp(size); hR1n@/nh
} E0Neo _7
} b\^q9fy
0cxk)l%
private int size=0; |#6))Dh
]sf1+3
private int[] queue; h72#AN
MPg"n-g*
public int get() { ozr82
return queue[1]; D^~G(m;-
} It
.`
(,5,}
public void remove() { }&{z-/;H
SortUtil.swap(queue,1,size--); +g6t)Gl
fixDown(1); [`eqma
} _Ka6! 9
file://fixdown =gjq@N]lAW
private void fixDown(int k) { !PIpvx{aX
int j; ;=?f0z<
while ((j = k << 1) <= size) { (pFPuV
if (j < size %26amp;%26amp; queue[j] j++; 10 D6fkjf
if (queue[k]>queue[j]) file://不用交换 V?*\ISB`}
break; And|T 6u
SortUtil.swap(queue,j,k); -!kfwJg8N(
k = j; q|23l1PI
} =(^-s Jk
} )O~V3a
private void fixUp(int k) { C25r3bj
while (k > 1) { m<DiYxK
int j = k >> 1; _ `RCY^t
if (queue[j]>queue[k]) Snav)Hb'
break; mimJ_=]DC
SortUtil.swap(queue,j,k); \
M_}V[1+
k = j; EM.7,;|N
} w!=Fi
} >pVrY;
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jv
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} FccT@,.F
nlfu y[oX
} k[6xuyY]
z DP
SortUtil: soH
M5<U
sL9,+
package org.rut.util.algorithm; 7HpfHqJ7
)<kId4E
import org.rut.util.algorithm.support.BubbleSort; 4a&*?=GG
import org.rut.util.algorithm.support.HeapSort; *7ggw[~
import org.rut.util.algorithm.support.ImprovedMergeSort; ]7d~,<3R
import org.rut.util.algorithm.support.ImprovedQuickSort; 0! :1o61
import org.rut.util.algorithm.support.InsertSort; qOusO6
import org.rut.util.algorithm.support.MergeSort; KVvzVQ1
import org.rut.util.algorithm.support.QuickSort; $8{|25
*E
import org.rut.util.algorithm.support.SelectionSort; _m
*8f\
import org.rut.util.algorithm.support.ShellSort; 7.r}98V
D};zPf@!p
/** wO&edZ]zb^
* @author treeroot X/
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* @since 2006-2-2 d"1DE
* @version 1.0 oPX `/X#
*/ Tk^J#};N
public class SortUtil { ~4YLPMGKl
public final static int INSERT = 1; Hyw T
public final static int BUBBLE = 2; `ehZ(H}
public final static int SELECTION = 3; 1;\A./FVv
public final static int SHELL = 4; H9x,C/r,
public final static int QUICK = 5; PjH[8:,
public final static int IMPROVED_QUICK = 6; gbf-3KSp^
public final static int MERGE = 7; >d`XR"_e
public final static int IMPROVED_MERGE = 8; $Vi[195]2
public final static int HEAP = 9; )wmG&"qsP
^l UV^%f
public static void sort(int[] data) { \k#|[d5W
sort(data, IMPROVED_QUICK); "k8Yc<`u
} kHO2&"6
private static String[] name={ .%.kEJh`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" GAZTCkB"
}; +s*OZ6i [
+>em
!~3
private static Sort[] impl=new Sort[]{ cB;:}Q08#
new InsertSort(), B@:c8}2.
new BubbleSort(), .`iG}j)\
new SelectionSort(), V)$y
new ShellSort(), h6*&1r
new QuickSort(), 7j>NUx=j3
new ImprovedQuickSort(), z/JoUje
new MergeSort(), YF+hN\
new ImprovedMergeSort(), sHqs)@D
new HeapSort() |Ef\B]Ns
}; Bs@!S?
-8L22t
public static String toString(int algorithm){ fn%Gu s~
return name[algorithm-1]; DcNQ2Zz?%
} Q}KNtNCpx
^w0V{qF{
public static void sort(int[] data, int algorithm) { D 8nt%vy
impl[algorithm-1].sort(data); Xq3n7d.
} &GF|Rr8NXs
z7[TgL7
public static interface Sort { Q9(J$_:
public void sort(int[] data); ]s*Fs]1+H
} HF9\SVR
B
}Yi)r*LI3
public static void swap(int[] data, int i, int j) { 6GxQ<
int temp = data; AN!MFsk
data = data[j]; L<kIzB !
data[j] = temp; s6#@S4^=\
} ]!u12^A{
} 59?@55