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。 )WsR
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插入排序: 2Ws'3Jz
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package org.rut.util.algorithm.support; Oar%LSkPRz
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import org.rut.util.algorithm.SortUtil; {hVc,\A
/** : eFyd`Syw
* @author treeroot ~~}8D"
* @since 2006-2-2 ]T._TZ"
* @version 1.0 %e+{wU}w?2
*/ E&>;a!0b]
public class InsertSort implements SortUtil.Sort{ 9F7}1cH7g@
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/* (non-Javadoc) 8@r>`c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !im%t9
*/ wU-Cb<^
public void sort(int[] data) { zICAV -&
int temp; DaqlL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oF_
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} ;i!$rL
} {v*X}`.h
} H/l,;/q]b
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} `l
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冒泡排序: Kl]l[!c7$
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package org.rut.util.algorithm.support; # blh9.V&F
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import org.rut.util.algorithm.SortUtil; @ 1FWBH~
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/** [nLd> 2P
* @author treeroot `KUL4) g~
* @since 2006-2-2 g ,yB^^%
* @version 1.0 GW2v&Ul7(
*/ K~+x@O*
public class BubbleSort implements SortUtil.Sort{ A>6_h1
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/* (non-Javadoc) x\pygzQ/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7%W@Hr,%F
*/ ihD|e&
public void sort(int[] data) { '![VA8
int temp; G0(A~Q"
for(int i=0;i for(int j=data.length-1;j>i;j--){ e}ivvs2
if(data[j] SortUtil.swap(data,j,j-1); $]MOAj"LH
} U04)XfO;]
} !,{-q)'D
} -BH T'zq1S
} KN~Rep cz@
uFL!*#A
} @%!Gj{
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选择排序: z8
K#G%,:
vH@$?b3VP
package org.rut.util.algorithm.support; 2[Xe:)d
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import org.rut.util.algorithm.SortUtil; USH>`3
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/** G$s=P
* @author treeroot g_?bWm4br
* @since 2006-2-2 ,irc=0M(
* @version 1.0 4"eeEs h
*/ Kir|in)r0
public class SelectionSort implements SortUtil.Sort { :@S=0|:j
02C;
/* j6Au<P
* (non-Javadoc) t![972.&
* ]0g1P-&,U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N@8tf@BT
*/ ^9XAWj"
public void sort(int[] data) { 2ZKy7p0/
int temp; :-~x~ah-
for (int i = 0; i < data.length; i++) { KJ_L>$
]*
int lowIndex = i; |UN#utw{^Y
for (int j = data.length - 1; j > i; j--) { A/.z. K
if (data[j] < data[lowIndex]) { >Sm#-4B-
lowIndex = j; Ca0t}`<S
} i8.OM*[f
} RY*yj&?w[
SortUtil.swap(data,i,lowIndex); e r"gPW
} `3.bux~
} 2G$-:4B
9HAK
} EHm:&w
2>im'x 5
Shell排序: MJ.Kor
x)T07,3:
package org.rut.util.algorithm.support; U!T#'H5'-
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import org.rut.util.algorithm.SortUtil; Ps~)l#gue
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/** q[+V6n`Z5
* @author treeroot W |+&K0M
* @since 2006-2-2 SpZmwa #\
* @version 1.0 g$mqAz<
*/ %Gm4,+8P3o
public class ShellSort implements SortUtil.Sort{ WiFZY*iu5
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/* (non-Javadoc) @@|H8mP}H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Ael
*/ %j ?7O00@
public void sort(int[] data) { >c.HH}O0W
for(int i=data.length/2;i>2;i/=2){ 6H:EBj54?
for(int j=0;j insertSort(data,j,i); {=_xze)
} Y4*?QBYA
} *'R2Lo<C
insertSort(data,0,1); >IHf5})R
} 0!`!I0
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/** g=s2t"&
* @param data 6/Z 8/PL
* @param j ,@t#)HV
* @param i (ce"ED`1
*/ v9Ez0 :)
private void insertSort(int[] data, int start, int inc) { bM
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int temp; 'Y5=A!*@tf
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 62#8c~dL
} =4Wjb
} k?=_p6>
} G_?qY#"(
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} vo2 T P:
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快速排序: n/IDq$/P
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package org.rut.util.algorithm.support; !Ly1!;<
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import org.rut.util.algorithm.SortUtil; 7,3v,N|
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/** x[2eA!NC
* @author treeroot .?.Q[ic
* @since 2006-2-2 |*zvaI(}
* @version 1.0 YQ5d!a.
*/ [RHji47
public class QuickSort implements SortUtil.Sort{ YCNpJGM
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/* (non-Javadoc) H/O v8|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <(caY37o6)
*/ #:/-8Z(0
public void sort(int[] data) { Xr pnc7
quickSort(data,0,data.length-1); ,U'E!?=:VS
} x<{)xP+|
private void quickSort(int[] data,int i,int j){ `d:cq.OO
int pivotIndex=(i+j)/2; BmFs6{>~c
file://swap n\H.NL)
SortUtil.swap(data,pivotIndex,j); 7 *HBb-
Di #E m[
int k=partition(data,i-1,j,data[j]); o<%s\n
SortUtil.swap(data,k,j); sxQMfbN
if((k-i)>1) quickSort(data,i,k-1); S31+ j:"
if((j-k)>1) quickSort(data,k+1,j); G-sA)WOF
y&+Sp/6BYA
} k'+Mc%pg4E
/** ]}dAm S/
* @param data NeY,Of|
* @param i woR }=\K
* @param j C?%Oi:Gi&
* @return (Y]G6>
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*/ `oo(\O7t=
private int partition(int[] data, int l, int r,int pivot) { w\ 7aAf3O
do{ )NS&1$
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =k22f`8ew
SortUtil.swap(data,l,r); 8VZLwhj
} OPVcT
while(l SortUtil.swap(data,l,r); \}mn"y
return l; #me'1/z
} p*(]8pDC
V .VV:`S
} Fs)m;C
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改进后的快速排序: v"G) G)*z
1]Gp\P}
package org.rut.util.algorithm.support; UI.>BZ6}
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import org.rut.util.algorithm.SortUtil; $WK~|+"{>
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/** {F+iL&e)
* @author treeroot n:[GK_
* @since 2006-2-2 rui]_Fn]I
* @version 1.0 -dsE9)&8DX
*/ ]AzDkKj
public class ImprovedQuickSort implements SortUtil.Sort { uPtS.j=
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private static int MAX_STACK_SIZE=4096; Se-n#
private static int THRESHOLD=10; \ )n'Ywr
/* (non-Javadoc) >0qe*4n|M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iu6NIy7D
*/ $N)b6(}F10
public void sort(int[] data) { SV96eYT<
int[] stack=new int[MAX_STACK_SIZE]; O<?z\yBtS^
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int top=-1; ,BG
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int pivot; 9N]V F'
int pivotIndex,l,r; 2DTBL:?`
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stack[++top]=0; )$e_CJ}9e
stack[++top]=data.length-1; vL"[7'
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while(top>0){ ON<X1eU
int j=stack[top--]; OAXF=V F#
int i=stack[top--]; s0x;<si_
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pivotIndex=(i+j)/2; Sx3R2-!Z
pivot=data[pivotIndex]; Qcf5*]V
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SortUtil.swap(data,pivotIndex,j); 11>K\"K}
*
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file://partition oaJnLd90W
l=i-1; .IJgkP)!]
r=j; ESAFsJ$r;
do{ s5'So@L8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e[a?5,s2
SortUtil.swap(data,l,r); :F`yAB3
} WMLsKoby
while(l SortUtil.swap(data,l,r); xK3}zN$T
SortUtil.swap(data,l,j); 2{E"#}/
z(&~O;;N#
if((l-i)>THRESHOLD){ I,xV&j+<
stack[++top]=i; 2E":6:Wsw
stack[++top]=l-1; m@){@i2.
} <ny)yK
if((j-l)>THRESHOLD){ !3'&_vmG$
stack[++top]=l+1; sjj*7i*
stack[++top]=j; e2PM^1{_
} `vPc&.-K
u9}k^W)E
} 'P^6H$0
file://new InsertSort().sort(data); <>FpvdB
insertSort(data); ;,yjkD[mWE
} _ X*
A
/** x#{.mN
* @param data R2[-Q"|Ra
*/ Ev7fvz =
private void insertSort(int[] data) { .j)f'<;%
int temp; Ce0YO~I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *U=%W4?W
} mt(2HBNoz
} qOk=:1`3
} 3'zm)SXJ
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} r g$2)z1
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归并排序: U oiXIf_Q
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package org.rut.util.algorithm.support; 3M[b)At V.
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import org.rut.util.algorithm.SortUtil; c$>$2[*=
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/** CF:s@Z+
* @author treeroot |4@su"OA
* @since 2006-2-2 c)tG1|Og]
* @version 1.0 #, KjJ
*/ 71# ipZ
public class MergeSort implements SortUtil.Sort{ Cd"iaiTD0
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/* (non-Javadoc) g}B|ZRz+{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Do&/+Ssnu
*/ PnKgUJoa0
public void sort(int[] data) { _26<}&]b*
int[] temp=new int[data.length]; Tl9;KE|
mergeSort(data,temp,0,data.length-1); fv",4L
} 6HW8mXQh<h
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private void mergeSort(int[] data,int[] temp,int l,int r){ ]8qFxJ+2^
int mid=(l+r)/2; eBmBD"$
if(l==r) return ; hZobFf
mergeSort(data,temp,l,mid); G-)Q*p{i|
mergeSort(data,temp,mid+1,r); C&QT-|
for(int i=l;i<=r;i++){
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temp=data; o=1M<dL
} 6?3f+=e"~!
int i1=l; z[I3k
int i2=mid+1; `;9Z?]}`
for(int cur=l;cur<=r;cur++){ mXH\z
if(i1==mid+1) q)ns ui(
data[cur]=temp[i2++]; nKzS2u=:Y
else if(i2>r) @,Iyn<v{B
data[cur]=temp[i1++]; `bJ+r)+5
else if(temp[i1] data[cur]=temp[i1++]; #Wz7ju;
else w)hH8jx{
data[cur]=temp[i2++]; &ZRriqsQg
} EC4RA'Bg1k
} ~P47:IZf
i@C1}o-/
} Oz[]]`C1
SeC[,
改进后的归并排序: &z@~n
"0(H! }D
package org.rut.util.algorithm.support; Vu/{Hr
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import org.rut.util.algorithm.SortUtil; Y|NANjEAfm
s
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/** ;e>pu"#
* @author treeroot o-))R| ~z
* @since 2006-2-2 e7(iMe
* @version 1.0 OUd&fUmH
*/ DO #!ce
public class ImprovedMergeSort implements SortUtil.Sort { f+/AD
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private static final int THRESHOLD = 10; R3;,EL{H&
FG^Jh5
/* fR&;E
* (non-Javadoc) 6,707h
* b 6FC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` n*e8T
*/ V5MLzW\8
public void sort(int[] data) { %q~YJ*\
int[] temp=new int[data.length]; e-Xr^@M*Q
mergeSort(data,temp,0,data.length-1); =peodj^
} fr\"MP
ID-Y*
private void mergeSort(int[] data, int[] temp, int l, int r) { J\kGD
int i, j, k; RZtY3:FBx|
int mid = (l + r) / 2; B~[QmK
if (l == r) ]Cfjs33H
return; pQGlg[i2/
if ((mid - l) >= THRESHOLD) f(^? PGO
mergeSort(data, temp, l, mid); 4pin\ZS:C
else P;V$%r`yD
insertSort(data, l, mid - l + 1); X#bK.WN$
if ((r - mid) > THRESHOLD) m+t<<5I[-
mergeSort(data, temp, mid + 1, r); F ka^0
else (9#$za>
insertSort(data, mid + 1, r - mid); |L@&plyB-
00?_10x)
for (i = l; i <= mid; i++) { aDV~T24
temp = data; )Oxsasn)M
} /E/Z0<l7
for (j = 1; j <= r - mid; j++) { W:s>?(6?
temp[r - j + 1] = data[j + mid]; ~]MACG:'
} $Z{ap
int a = temp[l]; n#2tFuPE
int b = temp[r]; Dsl,(qm5
for (i = l, j = r, k = l; k <= r; k++) { 0^H"eQO
if (a < b) { vn]e`O>y
data[k] = temp[i++]; MY8[)<q"
a = temp; <6
HrHw_
} else { 9;\a|8O
data[k] = temp[j--]; (R.l{(A
b = temp[j]; K@JGGgrE`!
} kBh*@gf
} ~HFqAOr
} ;;^OKrzWW
mW/6FC
/** [MQU~+]
* @param data <}\!FuC
* @param l V<:)bG4;d
* @param i F9Hxqa#1T
*/ f,jN"
private void insertSort(int[] data, int start, int len) { \jkMnS6FvL
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?06+"Z
} SBf8Ipe
} 9!``~]G2
} x1@`\r#0
} u8w4e!rKo6
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堆排序: MO_-7,.y
%kHeU=
package org.rut.util.algorithm.support; 0eGz|J*7
wM-I*<L>
import org.rut.util.algorithm.SortUtil; 5~,/VV
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/** T{A_]2
G
* @author treeroot agbG) t0
* @since 2006-2-2 aUGRFK_6$
* @version 1.0 E*sQ|" g
*/ TrYt(F{t
public class HeapSort implements SortUtil.Sort{ 0r=KY@D
'l sG?
/* (non-Javadoc) L[D<e?j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wWI1%#__|o
*/ kH.W17D~
public void sort(int[] data) { Vr<eU>W
MaxHeap h=new MaxHeap(); U.$7=Zl8t
h.init(data); m0}1P]dc
for(int i=0;i h.remove(); 0qCx.<"p8#
System.arraycopy(h.queue,1,data,0,data.length); ?2q;`Nb
} PnUYL.v
!_No\O
private static class MaxHeap{ R0WI s:k2
)S8 fFV
void init(int[] data){ l_ES$%d
this.queue=new int[data.length+1]; 1ti9FQ
for(int i=0;i queue[++size]=data; 2C@ui728
fixUp(size); <o aVI?
} Vx~N`|yY
} #:)yh]MP
V-7A80!5
private int size=0; RBA{!
CJ~gE"
private int[] queue; URo#0fV4C
zrazbHI
public int get() { ,rU>)X
return queue[1]; ;X
zfd
} U2DE zr
Z ? F*Z0y
public void remove() { (6Y.|u]bq
SortUtil.swap(queue,1,size--); EOn[!
fixDown(1); Pf,lZU?f
} ]\.3<^
file://fixdown 3G.-JLhs
private void fixDown(int k) { k-;A9!^h
int j; f]*TIYicc
while ((j = k << 1) <= size) { eyIbjgpV
if (j < size %26amp;%26amp; queue[j] j++; PCcI(b>?l
if (queue[k]>queue[j]) file://不用交换 Lj,!025
break; ?xT ^9
SortUtil.swap(queue,j,k); C)RJjaOr
k = j;
ds#om2)
} ol7^T
} TwT@_~IM
private void fixUp(int k) { <y!(X"n`
while (k > 1) { .szc-r{
int j = k >> 1; /7o{%~O
if (queue[j]>queue[k]) H!81Pq~
break; V49[XX
SortUtil.swap(queue,j,k); p(8[n^~,i
k = j; "%?$BoJR0
} FRR`<do5$,
} {
ML)F ]]
}u
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} ;+Mee^E>!
^h5h kIx0
} 'ZXd|WI
)_H>d<di
SortUtil: -Z<V?SFOK
q
qFN4AO
package org.rut.util.algorithm; qQ/<\6Sl
"c2{n,
import org.rut.util.algorithm.support.BubbleSort; ]tnf<5x
import org.rut.util.algorithm.support.HeapSort; h%[1V
import org.rut.util.algorithm.support.ImprovedMergeSort; DQ{"6-
import org.rut.util.algorithm.support.ImprovedQuickSort; @krh <T6|
import org.rut.util.algorithm.support.InsertSort; U'Mxf'q
import org.rut.util.algorithm.support.MergeSort; nu<kx
import org.rut.util.algorithm.support.QuickSort; H2iC? cSR
import org.rut.util.algorithm.support.SelectionSort; 7K`Z<v&*
import org.rut.util.algorithm.support.ShellSort; _enS_R
$;Nw_S@
/** 9u^ yEqG`
* @author treeroot Y
*?hA'
* @since 2006-2-2 J^xIfV~zt
* @version 1.0 f.{/PL
*/ &~MM\,KML
public class SortUtil { l(j._j~p
public final static int INSERT = 1; }^"#&w3<
public final static int BUBBLE = 2; ysDGF@wZC
public final static int SELECTION = 3; KM&bu='L^
public final static int SHELL = 4; 8_h:_7e
public final static int QUICK = 5; !gX(Vh*k
public final static int IMPROVED_QUICK = 6; DFvj
public final static int MERGE = 7; }
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public final static int IMPROVED_MERGE = 8; &f_ua)cyY
public final static int HEAP = 9; ` &{
11Y4oS
public static void sort(int[] data) { s<b(@L 1
sort(data, IMPROVED_QUICK); 9_&N0>OF
} U3rpmml
private static String[] name={ TMAart;<
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3zsjL=ta
}; 032PR;]
A`
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private static Sort[] impl=new Sort[]{ eZ`x[g%1
new InsertSort(), $:!L38[7$
new BubbleSort(), FS^ie|8{D-
new SelectionSort(), _WB*ArR
new ShellSort(), Cu-z`.#}R
new QuickSort(), ^>/] Qi
new ImprovedQuickSort(), u[b0MNE~
new MergeSort(), h5p,BRtu
new ImprovedMergeSort(), `ZELw=kLL
new HeapSort() nR#'BBlI
}; f`Wces=5
YLkdT%
public static String toString(int algorithm){ y|h:{<
return name[algorithm-1]; vIpitbFC
} \ x>#bql+
227 Z6#CF!
public static void sort(int[] data, int algorithm) { 3Jj 3!aDB
impl[algorithm-1].sort(data); ^oH!FN`;{
} Fb^f`UI
k.K;7GZC
public static interface Sort { &:}}T=@M1
public void sort(int[] data); ^QbaMX
} M?G4k]
-xMM}r
y
public static void swap(int[] data, int i, int j) { @mRda%qR
int temp = data; v#E RXIrf
data = data[j]; M7.
fz"M
data[j] = temp; 1Uf8ef1,
} m>8tA+K)+)
} 1WJ%n;