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。 NK+iLXC
插入排序: @^$Xy<x
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package org.rut.util.algorithm.support; ;Qc_Tf=,
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import org.rut.util.algorithm.SortUtil; RvF6bIqo
/** J34lu{'if
* @author treeroot CKv[E
* @since 2006-2-2 6 ztM(2[
* @version 1.0 <Vk^fV
*/ T&=1IoOg
public class InsertSort implements SortUtil.Sort{ fr%}|7
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/* (non-Javadoc) MhZT<6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n^;:V8k
*/ F$FCfP7
public void sort(int[] data) { nkp!kqJ09
int temp; (:>:tcE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ||&EmH
} qmcLG*^,
} 7)NQK9~
} q8;WHfGf
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} ruLi
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冒泡排序: UNJ]$x0
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package org.rut.util.algorithm.support; V11Zl{uOl
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import org.rut.util.algorithm.SortUtil; qsUlfv9L6
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/** !tT$}?Ano
* @author treeroot VGY#ph%
* @since 2006-2-2 1Ig@gdmz
* @version 1.0 zhI} p.
*/ "|S \J5-%
public class BubbleSort implements SortUtil.Sort{ aUN!Sd2,
; 9pOtr
/* (non-Javadoc) ~B%=g)w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H/p<lp
*/ \ qc8;"@
public void sort(int[] data) { 33_YZOy^j
int temp; e}? #vTRI}
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8]Xwj].^C
if(data[j] SortUtil.swap(data,j,j-1); G l=dL<F
} gd6We)&
} L\8tqy.
} EAcJ>
} iO;q]
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} k, )7v
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选择排序: h5G>FPM-=
SxYX`NQ
package org.rut.util.algorithm.support; ?]081l7cd
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import org.rut.util.algorithm.SortUtil; 1o7
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/** W;coi4
* @author treeroot %Ysu613mz
* @since 2006-2-2 +pJ;}+
* @version 1.0 xQC.ap
*/ <D4.kM
public class SelectionSort implements SortUtil.Sort { !ec\8Tj
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/* inavi5.
* (non-Javadoc) 9)Y]05us
* }> k9]Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3_2(L"S2
*/ |,j6cFNw
public void sort(int[] data) { .!Kdi| a)
int temp; h[%`'(
for (int i = 0; i < data.length; i++) { 1sZwW P
int lowIndex = i; Xi_>hL+R(
for (int j = data.length - 1; j > i; j--) { :cop0;X:Wm
if (data[j] < data[lowIndex]) { pJx88LfR
lowIndex = j; |n3PznV
} Re('7m h~
} Xd>4n7nb$`
SortUtil.swap(data,i,lowIndex); lNQ t
} n*%<!\gJ
} 34
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} }`4o+
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Shell排序: mCe,(/>l+
v8,+|+3
package org.rut.util.algorithm.support; *KF:
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import org.rut.util.algorithm.SortUtil; _/ZIDIn
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/** VcT(n7
* @author treeroot {j[[E/8N!y
* @since 2006-2-2 k/O|ia6
* @version 1.0 =Z iyT$p
*/ ;g: TsYwM
public class ShellSort implements SortUtil.Sort{ &F[/@
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/* (non-Javadoc) {%@zQ|OO0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [a\:K2*'
*/ Lw?4xerLsb
public void sort(int[] data) { =L9sb!
for(int i=data.length/2;i>2;i/=2){ 8Vv"'CU#
for(int j=0;j insertSort(data,j,i); 4aGV1u+4
} pzezN
} g1L$+xD^
insertSort(data,0,1);
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} w`,[w,t
zWgNDYT~
/** fQlR;4QX]
* @param data _L(6F
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* @param j -*k%'Gr
* @param i #Oz<<G<
*/ g/W<;o<v(I
private void insertSort(int[] data, int start, int inc) { cUaLv1:HI
int temp; R~CQ=KQ.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {*As-Y:'F
} I 6a{'c(P
} {QTfD~z^K
} ^Qrdh0j
zF.rsNY
} \szx.IZT
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快速排序: ]|( (&Y
rl
Z&@X4X"q
package org.rut.util.algorithm.support; =-~82%
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import org.rut.util.algorithm.SortUtil; bS<lB!
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/** 3Tg
* @author treeroot 6gJy<a3
* @since 2006-2-2 tfvX0J
* @version 1.0 3/>McZ@OH
*/ ?3kfhR
public class QuickSort implements SortUtil.Sort{ U5z^R>k
y. @7aT5
/* (non-Javadoc) /}-]n81m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {7[^L1
*/ S3i%7f^C?N
public void sort(int[] data) { aAF:nyV~~0
quickSort(data,0,data.length-1); F*o{dLJ)
} #IA[erf:
private void quickSort(int[] data,int i,int j){ CtV$lXxup
int pivotIndex=(i+j)/2; ^.&uYF&
file://swap ++F #Z(p
SortUtil.swap(data,pivotIndex,j); 7m{ 'V`F
2[LT!TT
int k=partition(data,i-1,j,data[j]); dY68wW>d|
SortUtil.swap(data,k,j); "3LOL/7f
if((k-i)>1) quickSort(data,i,k-1); kdmannM
if((j-k)>1) quickSort(data,k+1,j); v2G_p|+O
Pon 2!$
} 9}iEEI
/** <33[qt~
* @param data }k.-xaj
* @param i LpeQx\
* @param j X{P_HCd
* @return ez&v"J
*/ Kjc"K36{L
private int partition(int[] data, int l, int r,int pivot) { \$T
do{ )t9<cJ=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2PE|4zG
SortUtil.swap(data,l,r); 'W3>lAPx!
} _)O1v%]"4
while(l SortUtil.swap(data,l,r); }RYr)
return l; Zk"'x,]#
} !
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z*>"I
} Mi,yg=V
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改进后的快速排序: ;U<;R
D' ZR>@w@
package org.rut.util.algorithm.support; RZ:Yu
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import org.rut.util.algorithm.SortUtil; WW\u}z.QJ
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/** g2JNa?z
* @author treeroot [U]U *x
* @since 2006-2-2 \Pi\c~)Pr
* @version 1.0 /qed_w.p
*/ 57* z0<
public class ImprovedQuickSort implements SortUtil.Sort { #Gx%PQ`
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private static int MAX_STACK_SIZE=4096; rS\j9@=Y4
private static int THRESHOLD=10; fPZt*A__
/* (non-Javadoc) 0z #'=XWk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ' 7+x,TszI
*/ t*m04* }
public void sort(int[] data) { CeSr~Ikg|
int[] stack=new int[MAX_STACK_SIZE]; ynvU$}w ~'
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int top=-1; D)U
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int pivot; c [sydl
int pivotIndex,l,r; UBzX%:A
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stack[++top]=0; !?Gt5$f
stack[++top]=data.length-1; ^=.R#zrc
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while(top>0){ u n\!K
int j=stack[top--]; +%7v#CY
&
int i=stack[top--]; 'FgBYy/
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pivotIndex=(i+j)/2; X0Y1I}gD
pivot=data[pivotIndex]; 7n9&@D3:P
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SortUtil.swap(data,pivotIndex,j); L15?\|':Y
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file://partition K'%2 'd
l=i-1; U>w#`Sy[
r=j; ;{EIx*<d
do{ }(A`aB_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O;z:?
SortUtil.swap(data,l,r); T$%r?p(s
} n^B9Mh@
while(l SortUtil.swap(data,l,r); >h1 3i@`r
SortUtil.swap(data,l,j); 1K?RA*aj
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if((l-i)>THRESHOLD){ %V71W3>6WS
stack[++top]=i; !TvNT}4 Z
stack[++top]=l-1; FM;NA{
} _8A
if((j-l)>THRESHOLD){ z`$jxSLm
stack[++top]=l+1; yiO!ZT
stack[++top]=j; nNz1gV:0X
} ]6L;
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} +wc8rE6+W
file://new InsertSort().sort(data); 0gO_dyB
insertSort(data); Swz{5 J2C
} 0b6jGa
/** G2qv)7{l2
* @param data a?jUm.
*/ |0ATH`{
private void insertSort(int[] data) { 6D|[3rXr
int temp; pMB!I9q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L#O1>
} hb#Nm6
} LvtHWt
} U{i xok
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} E! d?@Xr@
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归并排序: OL]P(HRm]~
VzfaUAIZl
package org.rut.util.algorithm.support; h ` qlI1]
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import org.rut.util.algorithm.SortUtil; \c}_!.xj"
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/** <}7 5Xo
* @author treeroot Ha~F&H|"O
* @since 2006-2-2 p 4_j>JPv5
* @version 1.0 ~MWI-oK
*/ g>G+?PY
public class MergeSort implements SortUtil.Sort{ m}A| W[p<
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/* (non-Javadoc) GT.1,E,Vw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6&|hpp#[
*/ Y`F) UwKK
public void sort(int[] data) { J,4,#2M8
int[] temp=new int[data.length]; QO2@K1Y
mergeSort(data,temp,0,data.length-1); (xpt_]Q!H
} Hb}O/G$a*
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private void mergeSort(int[] data,int[] temp,int l,int r){ /]j^a:#"6t
int mid=(l+r)/2; C7*n<+e
if(l==r) return ; :I_p4S.)
mergeSort(data,temp,l,mid); r$[`A_
mergeSort(data,temp,mid+1,r); {uUV(FzF6
for(int i=l;i<=r;i++){ r1<dZtb
temp=data; i>z_6Gax*[
} YI+ clh;%9
int i1=l; "&Hr)yyWG
int i2=mid+1; 37apOK4+
for(int cur=l;cur<=r;cur++){ "I)/|x\G*
if(i1==mid+1) V>Dqw!
data[cur]=temp[i2++]; ^h\(j*/#X
else if(i2>r) F m?j-'
data[cur]=temp[i1++]; b@ QCdi,u
else if(temp[i1] data[cur]=temp[i1++]; <fHJ9(5$V
else mR["xDHD
data[cur]=temp[i2++]; ^'9.VVyz
} Cj%n?-
} %xt;&HE
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} +3uPHpMB-
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改进后的归并排序: QB
uX#bDV
Emy=q5ryl
package org.rut.util.algorithm.support; b?{MXJ|
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import org.rut.util.algorithm.SortUtil; cwuzi;f
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/** BG|m5f
* @author treeroot :FT x#cZ
* @since 2006-2-2 XHU\;TF
* @version 1.0 QC,fyw\
*/ (}g4}A@x
public class ImprovedMergeSort implements SortUtil.Sort { GY>G}bfh
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private static final int THRESHOLD = 10; GYZP?E p*
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/* 0$A^ .M;
* (non-Javadoc) Hf/ZaBn
* JDJ"D\85
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l1bkhA b
*/ Y~xo=v(
public void sort(int[] data) { lArKfs/
int[] temp=new int[data.length]; X [<%T}s#
mergeSort(data,temp,0,data.length-1); ho-#Xbq#g
} /KLkrW
*
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private void mergeSort(int[] data, int[] temp, int l, int r) { .k:heN2-x
int i, j, k; ">._&8KkE0
int mid = (l + r) / 2; 0iYo&q'n
if (l == r) _01wRsm%2
return; ;6eBfMhL
if ((mid - l) >= THRESHOLD) jme`Tyd
mergeSort(data, temp, l, mid); 0~~yYo&
else \q($8<
insertSort(data, l, mid - l + 1); {xAd>fGG+y
if ((r - mid) > THRESHOLD) vPz$+&{I
mergeSort(data, temp, mid + 1, r); y\omJx=,
else e2e!"kEF
insertSort(data, mid + 1, r - mid); oXjoQ
9X?RJ."J
for (i = l; i <= mid; i++) { +4$][3.
temp = data; @XJ#oxM^
} C}#$wge
for (j = 1; j <= r - mid; j++) { @ ]40xKF
temp[r - j + 1] = data[j + mid]; ;j.-6#n
} F\, vIS
int a = temp[l]; [~PR\qm
int b = temp[r]; Ur]/kij
for (i = l, j = r, k = l; k <= r; k++) { fy]c=:EmD
if (a < b) { lEgjv,
data[k] = temp[i++]; h@E7wp1'~
a = temp; c/Fgx/hr
} else { ;L,i">_%u[
data[k] = temp[j--]; (3Q$)0t
b = temp[j]; JK`$/l|7
} u^G Y7gah
} M^*\$K%
} e|?eY)_
2eHVl.C5
/** qu1+.z=|
* @param data =z;]FauR!
* @param l RL:B.Lv/W
* @param i O6/:J#X%
*/ ;yajt\a
private void insertSort(int[] data, int start, int len) { /oW]? 9
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); DK
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} iO&*WIbg
} #i.,+Q
} U?an\rv
} r<'DS9m
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堆排序: -#v1/L/=
x3g4 r_
package org.rut.util.algorithm.support; J/fnSy
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import org.rut.util.algorithm.SortUtil; !zvjgDlZv
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/** IITUM)
* @author treeroot 41R6V>e@9J
* @since 2006-2-2 ?"*JV1 9
* @version 1.0 9/!1J
*/ <#J5.I 1
public class HeapSort implements SortUtil.Sort{ OLPY<ax
$[}EV(#y
/* (non-Javadoc) F~i ~%f,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4(sHUWT
*/ JO`r)_
public void sort(int[] data) { J$sBfOD
MaxHeap h=new MaxHeap(); ~+j2a3rv-{
h.init(data); P3`$4p?
for(int i=0;i h.remove(); 0PqI^|!
System.arraycopy(h.queue,1,data,0,data.length); V y$*v
} 4e/!BGkAS
(8aj`> y
private static class MaxHeap{ J^`5L7CO
-uWV(
,|
void init(int[] data){ Xp_m=QQsm
this.queue=new int[data.length+1]; {g#4E0.A!
for(int i=0;i queue[++size]=data; H0#=oJr$)W
fixUp(size); ]iGeqwT
} ;1[Z&Uv8
} 8q%y(e
1cv~_jFh
private int size=0; F$(ak;v}
r8@]|`j
private int[] queue; g9q}D-
O>pv/Ns
public int get() { ^ZO! (
return queue[1]; Nf^<pT[*
} %s"&|32
C+uW]]~I)
public void remove() { *2u~5Kc<
SortUtil.swap(queue,1,size--); BGBHA"5fz
fixDown(1); mM72>1~L*
} PWyf3
file://fixdown ~x!up9
private void fixDown(int k) { A$r$g\5+
int j; D/f4kkd
while ((j = k << 1) <= size) { MW6z&+Z
if (j < size %26amp;%26amp; queue[j] j++; DrKB;6
if (queue[k]>queue[j]) file://不用交换 H)i|?3Ip
break; # H
w(w
SortUtil.swap(queue,j,k); iX6>u4~(
k = j; Vn4wk>b}$2
} :u./"[G
} 7dcR@v`c
private void fixUp(int k) { *s*Y uY%y
while (k > 1) { ')!X1A{
int j = k >> 1; Oo@o$\+v
if (queue[j]>queue[k]) i4,p\rE0
break; BH1h2OEe#
SortUtil.swap(queue,j,k); w^ut,`yWR
k = j; !}z'"l4i
} Q8%_q"C
} ?T2>juf]5~
nV7Vc;
} o^vX\a?`u
E I zy
} Z.Yq)\it
A$3Rbn}"
SortUtil: 1'\QD`M9^
a3<:F2=~\
package org.rut.util.algorithm; q9_$&9
1f}(=Hv{
import org.rut.util.algorithm.support.BubbleSort; uD>=
import org.rut.util.algorithm.support.HeapSort; qEr?4h
import org.rut.util.algorithm.support.ImprovedMergeSort; \O;2^
import org.rut.util.algorithm.support.ImprovedQuickSort; /W$i8g
import org.rut.util.algorithm.support.InsertSort; =&} _bd/]
import org.rut.util.algorithm.support.MergeSort; 3{$7tck,
import org.rut.util.algorithm.support.QuickSort; N
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import org.rut.util.algorithm.support.SelectionSort; d]]z )
import org.rut.util.algorithm.support.ShellSort; o]4\Geg$
OQ&N]P2p
/** ^"X.aksA
* @author treeroot U_(>eVi7F
* @since 2006-2-2 0SQr%:zG
* @version 1.0 >Ua'*
*/ Z-Qp9G'
public class SortUtil {
2Qp}f^
public final static int INSERT = 1; Mg.%&vH\
public final static int BUBBLE = 2; N!7}B
public final static int SELECTION = 3; iyl
i/3|
public final static int SHELL = 4; hr}f5Z)^v
public final static int QUICK = 5; &7f8\TG|
public final static int IMPROVED_QUICK = 6; 80*hi)ux[
public final static int MERGE = 7; b&+zAt.
public final static int IMPROVED_MERGE = 8; Gv&G2^
public final static int HEAP = 9; w!7ApEH1
Sp80xV_B
public static void sort(int[] data) { (c(F1=K
sort(data, IMPROVED_QUICK); FKTF?4+\U
} ;"Kgg:K>W
private static String[] name={ 5,1<A@H
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8x U*j
}; -!Myw&*\V
A/>Q5)
private static Sort[] impl=new Sort[]{ a)JXxst
new InsertSort(), g[O?wH-a
new BubbleSort(), ;Zd_2CZ
new SelectionSort(), N
$) G8
new ShellSort(), #m.e9MU
new QuickSort(), v
49o$s4J
new ImprovedQuickSort(), F'Y ad
new MergeSort(), cRVL1ne
new ImprovedMergeSort(), C7FQc{
new HeapSort() y4Jc|)
}; Cy]=Y
js<d"m*
public static String toString(int algorithm){ @gD)pH
return name[algorithm-1]; dtC@cK/,D
} ~\_VWXXvIW
wQ/* f9
public static void sort(int[] data, int algorithm) { B-Jd|UE`u
impl[algorithm-1].sort(data); sgp.;h'
} F3}MM
dX
{h?pvH_>
public static interface Sort { Af;Pl|Zh[
public void sort(int[] data); [Cl0Kw.LD
} = {O ~
:Z//
public static void swap(int[] data, int i, int j) {
vmqa_gU\
int temp = data;
@'R)$:I%L
data = data[j]; {Yj5Mj|#
data[j] = temp; m1X7zU Cy
} &u.{]Yjx
} 'Rn-SD~gIr