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。 yTkYPx
插入排序: /M v\~vg$1
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package org.rut.util.algorithm.support; Qj[4gN?}=
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import org.rut.util.algorithm.SortUtil; !ssE >bDa
/** Y?ZTl762
* @author treeroot h_*=_ 2|}
* @since 2006-2-2 V |#B=W
* @version 1.0 Qaq{UW
*/ b(;"p-^
public class InsertSort implements SortUtil.Sort{ $axaI$bE
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/* (non-Javadoc) Ml+.\'r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f==o
*/ sjWhtd[fgG
public void sort(int[] data) { 2"yzrwZ:
int temp; |>jlY|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D:8-f3
} 92+({ fgW
} iDp]lu
} zdU<]ge
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} @bfaAh~
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冒泡排序: x #BUIi
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package org.rut.util.algorithm.support; XOJ/$y
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import org.rut.util.algorithm.SortUtil; c^A3|tCi
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/** cS4e}\q,
* @author treeroot ogip#$A}3
* @since 2006-2-2 08yTTt76t
* @version 1.0 R4E0avt
*/ K34ca-~
public class BubbleSort implements SortUtil.Sort{ ;# {XNq<1
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/* (non-Javadoc) PPPRO.y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *=~
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*/ 2=(=Wjk.
public void sort(int[] data) { XMa(XOnX
int temp; q,QMvUK:
for(int i=0;i for(int j=data.length-1;j>i;j--){ K
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if(data[j] SortUtil.swap(data,j,j-1); #s(B,`?N
} r_FW)F u^
} l
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} [-s0'z
} RTH dL
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} $M$oNOT}Y
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选择排序: =Ky1v$<
P.&,nFIg3
package org.rut.util.algorithm.support; N#Qby4w >
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import org.rut.util.algorithm.SortUtil; P,xayy
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/** EOVHTDkKf
* @author treeroot .6(Bf$E
* @since 2006-2-2 %D gU
* @version 1.0 8
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*/ eZI&d;i
public class SelectionSort implements SortUtil.Sort { xyBe*,u
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/* e_\4(4x
* (non-Javadoc) 3/}=x<ui
* GB^Ch YOb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lv&<kYWY
*/ vRn^n
public void sort(int[] data) { 4LUFG
int temp; pjIXZ=
for (int i = 0; i < data.length; i++) { <ynmA
int lowIndex = i; QIBv}hgcy
for (int j = data.length - 1; j > i; j--) { U/D\N0
if (data[j] < data[lowIndex]) { "MZVwl "E#
lowIndex = j; Lo7R^>
} /LPSI^l!m
} fVb&=%e
SortUtil.swap(data,i,lowIndex); V8[woJ5x
} lJ R",_
} Z-Bw?_e_K
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} Z^>3}\_v
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Shell排序: x8b w#
c.KpXY
package org.rut.util.algorithm.support; VSms hld
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import org.rut.util.algorithm.SortUtil; ]*[S#Jk
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/** ?Xh=rx_
* @author treeroot Ct$e`H!;
* @since 2006-2-2 PO<4rT+B
* @version 1.0 DH)@8)C
*/ l'B`f)
public class ShellSort implements SortUtil.Sort{ QmT]~4PqS
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/* (non-Javadoc) .CQ
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0qw,R4YK
*/ 19bP0y
public void sort(int[] data) { (`!?p ^>A
for(int i=data.length/2;i>2;i/=2){ 'JKFEUzM
for(int j=0;j insertSort(data,j,i); #*}4=
} ,F6i5128{
} l')?w]|
insertSort(data,0,1); 2+sNt6B2
} #RlI([f|&
G/N'8Q)
/** 5s;HF |2x
* @param data RUYwDtC
* @param j RfEmkb<9Z
* @param i =NH:/j^
*/ "eZNci
private void insertSort(int[] data, int start, int inc) { 9_5Fl,u
z
int temp; Tj<W4+p{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PZeVjL?E
} ;IXDZ#;
} h+t{z"Ic=
} x_2
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} Y.[^3
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快速排序: xo7H^!_
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package org.rut.util.algorithm.support; )/Ee#)z*
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import org.rut.util.algorithm.SortUtil; e@NS=U` <
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/** ;W'y^jp]"
* @author treeroot B~jl1g|
* @since 2006-2-2 l?pZdAE
* @version 1.0 Rkw)IdB
*/ Y>R|Uf.o z
public class QuickSort implements SortUtil.Sort{ }yK_2zak5i
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/* (non-Javadoc) ~Pv4X2MO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j'X]bd'
*/ \&Mipf7a
public void sort(int[] data) { lRZt))3
quickSort(data,0,data.length-1); u"?cmg<.1
} F?T3fINR
private void quickSort(int[] data,int i,int j){ 4WzB=C(f
int pivotIndex=(i+j)/2; )+u|qT3%
file://swap 7t0\}e
SortUtil.swap(data,pivotIndex,j); mxGa\{D#y
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int k=partition(data,i-1,j,data[j]); `~(KbH=]
SortUtil.swap(data,k,j); do+HPnfDzU
if((k-i)>1) quickSort(data,i,k-1); ~Q0jz/#c
if((j-k)>1) quickSort(data,k+1,j); 6f\0YU<C&
9fzbR~s
} 5d*k[fZ
/** UF|v=|*{#
* @param data Jc-0.^]E}
* @param i (C!u3ke2D
* @param j uG${`4
* @return O5{
>k
*/ O-U_Zx0zd
private int partition(int[] data, int l, int r,int pivot) { [3]!*Cd
do{ NyeGa
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %h4pIA
SortUtil.swap(data,l,r); .px*.e s
} 5owUQg,W
while(l SortUtil.swap(data,l,r); M$FQoRwH
return l; A+iQH1C0h
} U~s&}M\n
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} [6FCbzS_W
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改进后的快速排序: n^UrHHOL
iKv{)5
package org.rut.util.algorithm.support; >C*q
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import org.rut.util.algorithm.SortUtil; ;B:'8$j$
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/** |GA4fFE=
* @author treeroot gX{V>T(<
* @since 2006-2-2 Yih^ZTf]O?
* @version 1.0 H8`K?SXU
*/ @j K7bab:
public class ImprovedQuickSort implements SortUtil.Sort { dp&4G6Y<A
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private static int MAX_STACK_SIZE=4096; {I@@i8)]
private static int THRESHOLD=10; yCf*ts1
/* (non-Javadoc) 53=VIN]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #?@k=e\
*/ ZcYxH|Gn
public void sort(int[] data) { EZ8Ih,j9
int[] stack=new int[MAX_STACK_SIZE]; W&A22jO.1
Y 'Yoc
int top=-1; C8m8ys
int pivot; Aq^1(-g
int pivotIndex,l,r; c#<v:b
([qw#!;w;
stack[++top]=0; QNLkj`PL/
stack[++top]=data.length-1; vh"zYl`
2w $o;zz1
while(top>0){ ^}ngbDn
int j=stack[top--]; jI_TN5
int i=stack[top--]; d?$FAy'o5
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pivotIndex=(i+j)/2; [@eNb^R
pivot=data[pivotIndex]; ((SN We
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SortUtil.swap(data,pivotIndex,j); :5L9tNr{_
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file://partition '&I.w p`^
l=i-1; t9Ht
54
r=j; |dsd5Vdr
do{ d(jd{L4d
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w-Y-;*S
SortUtil.swap(data,l,r); 'ZgrN14
} +Tf ,2?O
while(l SortUtil.swap(data,l,r); Xjt/ G):L
SortUtil.swap(data,l,j); =nh/w#
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if((l-i)>THRESHOLD){ wcspqC" _
stack[++top]=i; (%rO'X
stack[++top]=l-1; qSlC@@.>
} ]S[M]-I
if((j-l)>THRESHOLD){ 6#MIt:#
stack[++top]=l+1; 6wYd)MDLL
stack[++top]=j; lM3UjR|@
} q~^Jd=cB\
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} L%# #U'e3
file://new InsertSort().sort(data); 2ro4{^(_
insertSort(data); 1mz;4xb
} JQP7>W
/** +H,/W_/g
* @param data fil'._
*/ :EJ+#
private void insertSort(int[] data) { Psij*%I4
int temp; *)gbKXb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (|(#~o]40t
} JK4vQWy
} EJ;:O1,6H
} 5`53lK.C
qgbp-A!2zF
} )`!i"
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归并排序: ftw\oGrS
(]n^_G#-$
package org.rut.util.algorithm.support; 8_US.52V
dE=4tqv-r
import org.rut.util.algorithm.SortUtil; H4ml0SS^
cs `T7?>
/** NRe{0U}nO
* @author treeroot cY
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* @since 2006-2-2 paF$o6\
* @version 1.0 2 1.;lj
*/ w[~O@:`]<o
public class MergeSort implements SortUtil.Sort{ J+r\EN^9
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/* (non-Javadoc) y, @I6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?xu5/r<
*/ ;i\m:8!;
public void sort(int[] data) { "q5Tw+KCfu
int[] temp=new int[data.length]; ~Wp>tnl
mergeSort(data,temp,0,data.length-1); ;N6Euiz
} ^
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private void mergeSort(int[] data,int[] temp,int l,int r){ AP&mr1_
int mid=(l+r)/2; 'gHa3:US
if(l==r) return ; I&^B?"Y
mergeSort(data,temp,l,mid); J8>y2rAi
mergeSort(data,temp,mid+1,r); [1K\
_
for(int i=l;i<=r;i++){ 59A@~;.F
temp=data; -\O%f)R
} H3"90^|,@
int i1=l; B~K@o.%
int i2=mid+1; 1|_jV7`Mz
for(int cur=l;cur<=r;cur++){ r9G}[#DO
if(i1==mid+1) xPoI+,
data[cur]=temp[i2++]; MA0}BJoW
else if(i2>r) o,dO.isgh>
data[cur]=temp[i1++]; ~UA:_7#\M
else if(temp[i1] data[cur]=temp[i1++]; +L
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else x8YuX*/I
data[cur]=temp[i2++]; 'o;>6u<u
} V+myGsr`
} oh
c/{D2
4n_f7'GZg
} Goa0OC,
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改进后的归并排序: g/e\EkT
2MaHD}1Jw
package org.rut.util.algorithm.support; wN'Q\l+
?.Z4GWyXa
import org.rut.util.algorithm.SortUtil; <3i2(k
;/T=ctIs
/** N) D;)ZH
* @author treeroot n\Y{?x
* @since 2006-2-2 Gxx:<`[ON
* @version 1.0 ^GMM%
*/ &qKJN#NM@
public class ImprovedMergeSort implements SortUtil.Sort { V`Ve__5;
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private static final int THRESHOLD = 10; C{AVV<
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/* VX#4Gh,~N
* (non-Javadoc) 7~(|q2ib
* fR[kjwX)<1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
naE;f)
*/ d(!W
public void sort(int[] data) { SKO*x^"eU
int[] temp=new int[data.length]; ,?s3%<\2
mergeSort(data,temp,0,data.length-1); $*a'[Qot#
} ^UTQcm
Hq=5/N
private void mergeSort(int[] data, int[] temp, int l, int r) { pV`?=[h9
int i, j, k; MD`1KC_m
int mid = (l + r) / 2; (0Buo#I
if (l == r) )1f8
H,q^
return; C8 [W
if ((mid - l) >= THRESHOLD) h~|B/.[R:3
mergeSort(data, temp, l, mid); )w\E^
else {Yp>h5nwM_
insertSort(data, l, mid - l + 1); it?l! ~
if ((r - mid) > THRESHOLD) ^W}(]jL
mergeSort(data, temp, mid + 1, r); #J&45
else \H
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insertSort(data, mid + 1, r - mid); Y v22,|:
rZ}y'A
for (i = l; i <= mid; i++) { c!#DD;<Q
temp = data; rfj>/?8!@
} i%RN0UO^
for (j = 1; j <= r - mid; j++) { mFoE2?Y
temp[r - j + 1] = data[j + mid]; =^
} c~j")o
int a = temp[l]; !\D[lh}rL
int b = temp[r]; <i}lP/U
for (i = l, j = r, k = l; k <= r; k++) { 8bl&-F`
if (a < b) { Y [8~M8QX
data[k] = temp[i++]; .C$4jR.KC
a = temp; J~dk4D\
} else { lI#Ap2@
data[k] = temp[j--]; iBlZw%zKP
b = temp[j]; Qy!*U%tG'
} yc ize2>q
} &,vPZ,7l
} .8[Uk^q
/q.iUwSK>
/** E=PmOw7b
* @param data -1^dOG6*
* @param l dS9L( &
* @param i YXeL7W
*/ EtVRnI@
private void insertSort(int[] data, int start, int len) { M3>c?,O)J
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~ti{na4W<
} JQSp2b@'H
} )L^GGy8w
} |#uA(V
} @JFfyQ {-
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堆排序: kTJz .
GJ1ap^k
package org.rut.util.algorithm.support; l]:nncpns
2|2'?
import org.rut.util.algorithm.SortUtil; 0xv@l^B
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/** u7L!&/ 6On
* @author treeroot T&@xgj|!)
* @since 2006-2-2 WKjE^u
* @version 1.0 d5aG6/
*/ ){'Ef_/R
public class HeapSort implements SortUtil.Sort{ Z1@E
0M[O(.x
/* (non-Javadoc) 70sb{)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %5) 1^
*/ R1CoS6
public void sort(int[] data) { L?[NXLn+
MaxHeap h=new MaxHeap(); #ZFedK0vv
h.init(data); ]I
pLF#
for(int i=0;i h.remove(); Y`secUg
System.arraycopy(h.queue,1,data,0,data.length); 3}U {~l!K
} }a=<Gl|I;w
@(k}q3b<
private static class MaxHeap{ 2@&|/O6_\h
RXo!K iQO
void init(int[] data){ j%7N\Vb
this.queue=new int[data.length+1]; tXlo27J
for(int i=0;i queue[++size]=data; 1Z.
D3@
fixUp(size); hT
c
VMc
} gmF Cjs
} soSdlV{
/iz{NulOz*
private int size=0; /Mac:;W`
D/& 8[Z/Cn
private int[] queue; iR_j
h=2{
x:Mh&dq?
public int get() { -o\o{?t,
return queue[1]; '{e9Vh<x
} G6l:El&
*<.{sx^Gk
public void remove() { C 2$_Ad=s
SortUtil.swap(queue,1,size--); y,D@[*~Xb
fixDown(1); +0{$J\s
} ]VuB2L[D
file://fixdown O/Q7{5n
private void fixDown(int k) { wNNInS6
int j; Q~p)@[q
while ((j = k << 1) <= size) { 25:[VH$:4
if (j < size %26amp;%26amp; queue[j] j++; T4
:UJj}
if (queue[k]>queue[j]) file://不用交换 )9oF?l^q
break; tBJCfM
SortUtil.swap(queue,j,k); H8$l }pOz
k = j; CxvL!ew
} yJyovfJz.
} @e`%'
private void fixUp(int k) { REEs}88);'
while (k > 1) { FabDK :
int j = k >> 1; U,;a+z4\
if (queue[j]>queue[k]) Z4&,KrV
break; q?&Ap*
SortUtil.swap(queue,j,k); &oU) ,H
k = j; B^;G3+}
} 6"OwrJB
} \B72 #NR
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} n5Coxvy1
0.MD_s0)>
} IjshxNk
/b|V=j}W
SortUtil: nM=5L:d
d*}dM"
package org.rut.util.algorithm; n8FmIoZ&`
L6>;"]:f`
import org.rut.util.algorithm.support.BubbleSort; "7G>
import org.rut.util.algorithm.support.HeapSort; u!]g^r
import org.rut.util.algorithm.support.ImprovedMergeSort; E}YJGFB7"
import org.rut.util.algorithm.support.ImprovedQuickSort; w<qn @f
import org.rut.util.algorithm.support.InsertSort; [Dzd39aKr
import org.rut.util.algorithm.support.MergeSort; t\\oGH
import org.rut.util.algorithm.support.QuickSort; ZqONK^
import org.rut.util.algorithm.support.SelectionSort; PU& v{gn
import org.rut.util.algorithm.support.ShellSort; B4l*]K%
26e. Hu
/** J*!_kg)>J
* @author treeroot 55%j$f
* @since 2006-2-2 aa-{,X"MF
* @version 1.0 MAv-`8@|
*/ e$vvm bK.
public class SortUtil { 4~s{zob
public final static int INSERT = 1; E]aQK.
public final static int BUBBLE = 2; ?KB+2]7m6
public final static int SELECTION = 3; uG\ @e'pr
public final static int SHELL = 4; Ro2Ab^rQ|
public final static int QUICK = 5; fRt`]o:Om
public final static int IMPROVED_QUICK = 6; Ad:}i9-x
public final static int MERGE = 7; {E 'go]
public final static int IMPROVED_MERGE = 8; hOOkf mOM
public final static int HEAP = 9; ?"+g6II
cZb5h 9
public static void sort(int[] data) { >.xgo6
sort(data, IMPROVED_QUICK); rDD,eNjG
} }ldOxJSB?
private static String[] name={ ;2&ym)`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N=vb*3ECg
}; _nn\O3TB
0%W0vTvL
private static Sort[] impl=new Sort[]{ 'joc8o sS
new InsertSort(), @5=2+ M
new BubbleSort(), ZUA%ZkX=F
new SelectionSort(), 5#WyI#YNG
new ShellSort(), ?D\6@G:,#@
new QuickSort(), q{c/TRp7
new ImprovedQuickSort(), }hm"49,O
new MergeSort(), X2PyFe
new ImprovedMergeSort(), Gg,&~
jHib
new HeapSort() mw!EDJ;'
}; c}-WK*v
>V,i7v*?
public static String toString(int algorithm){ Z=I+_p_G
return name[algorithm-1]; jYxmU8
} qQ{i2D%)?f
+YX*.dW
public static void sort(int[] data, int algorithm) { xY=%+o.?*
impl[algorithm-1].sort(data); LQo>wl
} > &V Y
I'%\
E,
public static interface Sort { x%`.L6rj
public void sort(int[] data); \F; S
} 5bZjW~d
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public static void swap(int[] data, int i, int j) { 4b@Awtk
int temp = data; O: J;zv\
data = data[j]; Cqra\
data[j] = temp; @p\te7(P%
} 5*#3v:l/9
} +lNAog