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。 u/I|<NAC,
插入排序: pZ@)9c
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package org.rut.util.algorithm.support; >-%}'iz+
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import org.rut.util.algorithm.SortUtil; ep$C
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/** '4"9f]:
* @author treeroot c*k%r2'
* @since 2006-2-2 V,*<E &+
* @version 1.0 __3s3YG
*/ yx@%x?B
public class InsertSort implements SortUtil.Sort{ |=o)|z2
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/* (non-Javadoc) Fx3CY W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mBrH`!
*/ 1GaM!OC 9
public void sort(int[] data) { Cwh*AKq(
int temp; #Ns]l<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^%qe&Pe2
} YUGEGXw
} 6w"_sK?
} SyB2A\A
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} x(tf0[g
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冒泡排序: BM
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package org.rut.util.algorithm.support; \Fs+H,S<
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import org.rut.util.algorithm.SortUtil; qDVt
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/** )Z=S'm
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* @author treeroot AW R
* @since 2006-2-2 C3]"y7
* @version 1.0 Qms,kX
*/ (v)/h>vS
public class BubbleSort implements SortUtil.Sort{ w<P$)~6
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/* (non-Javadoc) Gkr]8J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !1b4q/
*/
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public void sort(int[] data) { gB)Cmw*
int temp; L%CBz]`
for(int i=0;i for(int j=data.length-1;j>i;j--){ YjR`}rdwo
if(data[j] SortUtil.swap(data,j,j-1); SJJ[y"GvD
} :,@\q0j"=
} }<9IH%sgF
} l(<=JUO;
} XzD+#+By
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} %@~;PS3kd
LFskNF0X
选择排序: +@"Ls P
^aONuG9
package org.rut.util.algorithm.support; y[64O x
v.q`1D1=t
import org.rut.util.algorithm.SortUtil; T1\@4x
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/** wR%F>[6.{
* @author treeroot DfsPg':z
* @since 2006-2-2 Sp]u5\
* @version 1.0 r1A<XP|1?I
*/ tZL {;@
public class SelectionSort implements SortUtil.Sort { sq45fRAi
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/* 2e<u/M21>
* (non-Javadoc) 8JFvz(SK>
* sd,KB+)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U(rY,4'
*/ U^&,xz$Cg
public void sort(int[] data) { >At* jg48
int temp; &~K4I
for (int i = 0; i < data.length; i++) { NW4tQ;ad
int lowIndex = i; 8-&c%h
1
for (int j = data.length - 1; j > i; j--) { G&z^AV
if (data[j] < data[lowIndex]) { t}wwRWo2?f
lowIndex = j; }Sr=|j
} xa[)fk$6
} d2U+%%Tdw
SortUtil.swap(data,i,lowIndex); \n<9R8g5
} WdZ_^
} w\zNn4B})A
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} $}8@?>-w
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Shell排序: 9q ]n&5
X8\UTHT&0
package org.rut.util.algorithm.support; V)Sw\tS6g
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import org.rut.util.algorithm.SortUtil; Mc9J Fzp
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/** NA!?.zn
* @author treeroot `V2doV)
* @since 2006-2-2 jY k5]2#A
* @version 1.0 <
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*/ v];P| Fi
public class ShellSort implements SortUtil.Sort{ ZKTY1JW_
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Z
/* (non-Javadoc) +.-g`Vyz*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Ifz-t/
*/ NilnS!BM
public void sort(int[] data) { u10;qYfL8o
for(int i=data.length/2;i>2;i/=2){ .G-L/*&%
for(int j=0;j insertSort(data,j,i); bk|?>yd
} L]*5cH
} ]NyN@9u@(
insertSort(data,0,1); GDQQ4-|O
} |)y-EBZe\"
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/** UB,0c)
* @param data va2FgW`Bd+
* @param j ~X(2F#{<{
* @param i ~~3*o
*/ 6F_:,b^
private void insertSort(int[] data, int start, int inc) { 9I [k3
int temp; }Ud'j'QMy
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NpH9},1i
} CI1K:K AM
} ;]l`Q,*OXb
} *G8Z[ht%r
Z# %s/TL
} ^fj30gw7\5
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快速排序: aZ8f>t1Q
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package org.rut.util.algorithm.support; 88VI
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import org.rut.util.algorithm.SortUtil; hd W7Qck "
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/** <m,bP
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* @author treeroot Z>[n~{-,p
* @since 2006-2-2 '=(D7F;
* @version 1.0 gnadx52FP
*/ ?u5jXJ0L
public class QuickSort implements SortUtil.Sort{ 7-
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/* (non-Javadoc) <tW/9}@p9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; o(:}d
*/ OBf$Z"i
public void sort(int[] data) {
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quickSort(data,0,data.length-1); '$[a-)4
} o$ #q/L
private void quickSort(int[] data,int i,int j){ yQ!keGj
int pivotIndex=(i+j)/2; vDyGxU!#\
file://swap :1;"{=Yx}
SortUtil.swap(data,pivotIndex,j); a1EQ.u
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int k=partition(data,i-1,j,data[j]); p*l=rni4
SortUtil.swap(data,k,j); F_&H*kL L3
if((k-i)>1) quickSort(data,i,k-1); T%A"E,#
if((j-k)>1) quickSort(data,k+1,j); G[=;519
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} iI;np+uYk
/** 8Y_lQfJa
* @param data (+}44Ldt
* @param i 4 ]ko
* @param j 2Z ?l,M~
* @return fOdX2{7m
*/ $RYOj{1
private int partition(int[] data, int l, int r,int pivot) { ?@<Tzk]a.
do{ nd[Ja_h
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sq@c?!'
SortUtil.swap(data,l,r); ^O}J',Fm%f
} Cq[Hh#q
while(l SortUtil.swap(data,l,r); %r&36d'
return l; 2cwJ);Eg2
} tBETNt7
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} "bz.nE*
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改进后的快速排序: >Bu_NoM
.*Bd'\:F/q
package org.rut.util.algorithm.support; _w2KUvG-8
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import org.rut.util.algorithm.SortUtil; oi8M6l
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/** mex@~VK
* @author treeroot P<;Puww/
* @since 2006-2-2 $j\jT
* @version 1.0 ["e;8H[K)%
*/ wr~Qy4 ny
public class ImprovedQuickSort implements SortUtil.Sort { 1tTY)Evf
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private static int MAX_STACK_SIZE=4096; a-AA$U9hj
private static int THRESHOLD=10; MHGaf`7ro
/* (non-Javadoc) SwaMpNXL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;,7m
*/ `R!2N4|;
public void sort(int[] data) { Ocz21gl-?`
int[] stack=new int[MAX_STACK_SIZE]; =dmxE*C
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int top=-1; ap,zC)[
int pivot; bR$5G
int pivotIndex,l,r; PZ#aq~>w
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stack[++top]=0; d[*NDMO
stack[++top]=data.length-1; D
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while(top>0){ ~f( #S*Ic
int j=stack[top--]; ~M1T
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int i=stack[top--]; KuEM~Q=
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pivotIndex=(i+j)/2; 9$}>O]
pivot=data[pivotIndex]; b@sq}8YD|z
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SortUtil.swap(data,pivotIndex,j); nFe
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file://partition qD/h/
l=i-1; *~w?@,}
r=j; O;T)u4Q&3
do{ L(X}37
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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q
SortUtil.swap(data,l,r); uaxkGEXr
} L X #.
while(l SortUtil.swap(data,l,r); \&U"7gSL
SortUtil.swap(data,l,j); |CK/-UG}
$$*0bRfd4=
if((l-i)>THRESHOLD){ wRq
f'
stack[++top]=i; >SS^qjh/
stack[++top]=l-1; lE*.9T
} yVJ)JhV
if((j-l)>THRESHOLD){ tf1Y5P$
stack[++top]=l+1; Q8]S6,pt
stack[++top]=j; =#wE*6T9
} AJ6O>Euq
23opaX5V=
} 5bsv05=e
file://new InsertSort().sort(data); NH1ak(zHW
insertSort(data); IxY!.d_s|~
} 1{
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/** ?ZkVk =t?
* @param data pBn;:
*/ c:s[vghH^#
private void insertSort(int[] data) { C\|HN=2eh
int temp; };*&;GFe
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =,08D^ xY
} 1KJ[&jS ]
} Hl8\*#;C&>
} cCIs~*D
akwS;|SZ
} zP/SDW
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归并排序: SL_JA
SL<EZn0F9
package org.rut.util.algorithm.support; =S\pI
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import org.rut.util.algorithm.SortUtil; 6U]r 3
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/** q@Zeu\T,*#
* @author treeroot t~Ic{%bdA
* @since 2006-2-2 18y'#<X!
* @version 1.0 lvUWs
*/ "<"s&ws;k
public class MergeSort implements SortUtil.Sort{ 2 ,.8oa(
j"&Oa&SH
/* (non-Javadoc) !T}R=;)eh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Su'l &]
*/ Tcq@Q$H
public void sort(int[] data) { Cn>t"#zs!~
int[] temp=new int[data.length]; /8P7L'Rb
mergeSort(data,temp,0,data.length-1); c2d1'l]n
} ETfoL.d$(
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private void mergeSort(int[] data,int[] temp,int l,int r){ @X_)%Y-^O
int mid=(l+r)/2; 5[^Rf'wy
if(l==r) return ; ZPHatC
mergeSort(data,temp,l,mid); B<,AI7
mergeSort(data,temp,mid+1,r); S^~
lQ|D
for(int i=l;i<=r;i++){ ~sCdvBA
temp=data; 6h\; U5
} ;Udx|1o
int i1=l; ZrWA,~;
int i2=mid+1; MnptC 1N
for(int cur=l;cur<=r;cur++){ dAjm4F-
if(i1==mid+1) lK#uyag
data[cur]=temp[i2++]; "}uV=y
else if(i2>r) o7yvXrpG(U
data[cur]=temp[i1++]; w X.]O!^X~
else if(temp[i1] data[cur]=temp[i1++]; KU_""T
else {%X[Snv
data[cur]=temp[i2++]; u/5)Yx+5_
} PxJvE*6^H
} XZ|\|(6Cc
>W'"xK|:
} _147d5
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改进后的归并排序: "GAKi}y">v
CbT ;#0
package org.rut.util.algorithm.support; s18A
(z%OK[
import org.rut.util.algorithm.SortUtil; =%+xNOdN7?
r#^uY:T%
/** ^i17MvT'
* @author treeroot 4TaHS!9
* @since 2006-2-2 6H|&HV(!R
* @version 1.0 _(KzjOMt
*/ ,^qHl+'
public class ImprovedMergeSort implements SortUtil.Sort { !]P=v`B.
,L8(Vo`-
private static final int THRESHOLD = 10; L>,xG.oG
4HyD=6V#
/* zB+zw\ncN
* (non-Javadoc) 05;J7T<
* iD:TKB_r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8*(|uX
*/ E1|:t$>Ld
public void sort(int[] data) { /Fp@j/50
int[] temp=new int[data.length]; Qf|c^B
mergeSort(data,temp,0,data.length-1); UFr5'T
} ?;p45y~n%
k
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private void mergeSort(int[] data, int[] temp, int l, int r) { mB*;>
int i, j, k; f_> lz
int mid = (l + r) / 2; \2)~dV:6+
if (l == r) HO39>:c
return; IPlkv{^
if ((mid - l) >= THRESHOLD) NQ\<~a`Eq
mergeSort(data, temp, l, mid); (APGz,^9#
else 2;YL+v2
insertSort(data, l, mid - l + 1); <7J\8JR&=
if ((r - mid) > THRESHOLD) EBplr ,
mergeSort(data, temp, mid + 1, r); x]|-2t
else h=ko_/<
insertSort(data, mid + 1, r - mid); 9 H~OC8R:
fb|lWEw5h.
for (i = l; i <= mid; i++) { P64<O5l/
temp = data; o1u?H4z
} lhJZPnx~
for (j = 1; j <= r - mid; j++) { DX8pd5U
temp[r - j + 1] = data[j + mid]; mbO.Kyfen
} MrpT5|t
int a = temp[l]; Bfr$&?j#
int b = temp[r]; etH]-S
for (i = l, j = r, k = l; k <= r; k++) { b$eZ>X
if (a < b) { =7<g;u
data[k] = temp[i++]; DsGtc<l%
a = temp; %weG}gCM
} else { Xh"8uJD
data[k] = temp[j--]; A$o ?_
b = temp[j]; Z66q0wR7
} 6?KJ"Ai9
} 9Zpd=m8dU
} O4Hc"v
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/** @#&y
* @param data UU]a).rz
* @param l ;bes#|^F
* @param i K1^x+I7%U[
*/ i@STo7=
private void insertSort(int[] data, int start, int len) { l*<RKY8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !;;WS~no3
} ~!TRR.
} SHP_
} }`$Sr&n 1
} 2$gOe^ &
c*`=o(S
堆排序: ma(E} s
\*6Ld%:h$
package org.rut.util.algorithm.support; SpiI9)gp
84u%_4/
import org.rut.util.algorithm.SortUtil; W&8)yog.
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/** @If ^5s;z
* @author treeroot $&[}+??
* @since 2006-2-2 a 9f%p
* @version 1.0 e`Vb.E)
*/ ![4<6/2gy
public class HeapSort implements SortUtil.Sort{ WEFvJ0]
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/* (non-Javadoc) E]j2%}6Z%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0*}%v:uN9
*/ *&lNzz5&
public void sort(int[] data) { e|jmOYWG
MaxHeap h=new MaxHeap(); _qQB.Dzo:
h.init(data); JVeb$_0k
for(int i=0;i h.remove(); o&b1-=MC2
System.arraycopy(h.queue,1,data,0,data.length); x7l3&;yDv
} XhEd9>#
Pn|*(sTl
private static class MaxHeap{ }qOj^pkJ
*%wfR7G[B
void init(int[] data){ }hd:avze
this.queue=new int[data.length+1]; QvN=<V
for(int i=0;i queue[++size]=data; 'CSIC8M<j
fixUp(size); }tRY,f
} P(#by{s
} jLu`DKB
^q=D!g
private int size=0; bhWH
cy-Bhk0H
private int[] queue; o:irwfArv
Ysz&/ry
public int get() {
B1!b@0^
return queue[1]; ow{Ss X
} Mk~]0d
kxp, ZP
public void remove() { {Ex*8sU%p%
SortUtil.swap(queue,1,size--); N1O.U"L;
fixDown(1); 6(uK5eD(!n
} -1 Ok_h"
file://fixdown >u:t2DxE
private void fixDown(int k) { s]z-d!G
int j; ^ A`@g4!
while ((j = k << 1) <= size) { !K~:crUV|S
if (j < size %26amp;%26amp; queue[j] j++; w[S!U<9/
if (queue[k]>queue[j]) file://不用交换 xbv
break; - s,M+Q(<
SortUtil.swap(queue,j,k); a*Oc:$
k = j; 0[qU k(=}[
} 6cV -iDOH
} |*+f N8
private void fixUp(int k) { Mr3;B+S
while (k > 1) { =E?!!EIq.
int j = k >> 1; ;/Z9M"!u[
if (queue[j]>queue[k]) x!08FL)
break; ~K-c-Zs#z
SortUtil.swap(queue,j,k); N=QeeAI}}m
k = j; dMnJ)R
} C Ahkv0?8
} z"@yE*6
D~i m1h;>
} !6UtwCVR
DKG%z~R*
} Wp[R$/uT
c3>#.NP_
SortUtil: "XEKoeG{
$]Vvu{
package org.rut.util.algorithm; w,t>M_(N
v&NC` dVR
import org.rut.util.algorithm.support.BubbleSort; ]}~[2k.
import org.rut.util.algorithm.support.HeapSort; &GC`4!H
import org.rut.util.algorithm.support.ImprovedMergeSort; g0P^O@8
import org.rut.util.algorithm.support.ImprovedQuickSort; x!A.**
import org.rut.util.algorithm.support.InsertSort; 0?tn.<'B8T
import org.rut.util.algorithm.support.MergeSort; J4Ix\r_
import org.rut.util.algorithm.support.QuickSort; *P#okwp
import org.rut.util.algorithm.support.SelectionSort; d&dp#)._8
import org.rut.util.algorithm.support.ShellSort; %)Pn<! L
'ow`ej
/** 8%dE$smH
* @author treeroot Tw!]N%E
* @since 2006-2-2 wIv_Z^%V
* @version 1.0 8e`'Ox_5a
*/ dsx'l0q 'i
public class SortUtil { UKBVCAK
public final static int INSERT = 1; $R '
public final static int BUBBLE = 2; 4+Sq[Rv0
public final static int SELECTION = 3; hpxqL%r
public final static int SHELL = 4; LG0z|x(
public final static int QUICK = 5; vakAl;
public final static int IMPROVED_QUICK = 6; &:i|;^^2
public final static int MERGE = 7; :Kl~hzVSOa
public final static int IMPROVED_MERGE = 8; [/s^(2%
public final static int HEAP = 9; v[r5!,F
FJ|6R( T_
public static void sort(int[] data) { P,2FH2Eyj
sort(data, IMPROVED_QUICK); BrdHTk= Vy
} bOt6q/f
private static String[] name={ 8| 6:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s)=fs#%
}; y|BRAk&n
^ di[J^
private static Sort[] impl=new Sort[]{ yEnurq%J
new InsertSort(), u}eqU%
new BubbleSort(), _&Hq`KJm
new SelectionSort(), IA\CBwiLj
new ShellSort(), ,X[lC\1a
new QuickSort(), qP"+SVqC
new ImprovedQuickSort(), -'j_JJ
new MergeSort(), /AJ#ngXz
new ImprovedMergeSort(), 6;02_C]\o
new HeapSort() 2;Ij~~
}; Ue>;h9^
@l7~Zn
public static String toString(int algorithm){ p[Pa(a,B7
return name[algorithm-1]; U>b mCK2
} j4ARGkK5B
?onaJ=mT
public static void sort(int[] data, int algorithm) { 8i H'cX
impl[algorithm-1].sort(data); EJM6TI"
} 5BSh`r
1Na*7|
public static interface Sort { C%$:Oq
public void sort(int[] data); G:W4<w
} }@kD&2
z=}@aX[
public static void swap(int[] data, int i, int j) { ~
.}
int temp = data; I<v1S
data = data[j]; ,_STt)
data[j] = temp; 3{gD'y4j
} q5jLK)
} b51{sL