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。 8w/$!9[
插入排序: wrI66R}@
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package org.rut.util.algorithm.support; iq*]CF
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import org.rut.util.algorithm.SortUtil; d5jZ?
/** *oZ]k`-!8
* @author treeroot .^
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* @since 2006-2-2 &8$Gyu
* @version 1.0 A{X:p3$eN
*/ bl yU53g
public class InsertSort implements SortUtil.Sort{ 0P i+ (X
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/* (non-Javadoc) pZHx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v,]-;V~<
*/ F#Y9 @E
public void sort(int[] data) { $r+_Y/
int temp; GWd71ZtFO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5,dKha
} ^m
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} &GYnGrw?@
} %x{jmZ$}
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} 6)=`&>9
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冒泡排序: -4wr)zjfW
lidVe]>
package org.rut.util.algorithm.support; FJ-X~^
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import org.rut.util.algorithm.SortUtil; AwnQ5-IR\
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/** gi {rqM
* @author treeroot [h&)h+xt
* @since 2006-2-2 ^cRAtoa
* @version 1.0 ,i RUR8
*/ a=_+8RyVQ
public class BubbleSort implements SortUtil.Sort{ %Yw?!GvL[
U/ds(*g@
/* (non-Javadoc) gug9cmA/Q7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ \&vA5-
*/ Mbm'cM&}
public void sort(int[] data) { 'k'"+
int temp; t?Ku6Z'
for(int i=0;i for(int j=data.length-1;j>i;j--){ Dxvizd>VU
if(data[j] SortUtil.swap(data,j,j-1); 1FA:"0lO
} KpX1GrIn3
} s#cb wDT
} ==#mlpi`S[
} O}s Mqh
P*6h$T
} B<$(Nb5<
~#MXhhqB
选择排序: b
I"+b\K
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package org.rut.util.algorithm.support; NJ^Bv`
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import org.rut.util.algorithm.SortUtil; WU$l@:Yo
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/** H~$*R7~
* @author treeroot ~V t?'v20@
* @since 2006-2-2 z!s1$5:" 0
* @version 1.0 ~n=oPm$pR
*/ 6L<Y
public class SelectionSort implements SortUtil.Sort { jWL%*dJrN
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/* +7\"^D
* (non-Javadoc) L}=DC =E
* I|x?
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $sxRRem{?
*/ 9 1.gE*D
public void sort(int[] data) { N
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int temp; 3p1U,B}
for (int i = 0; i < data.length; i++) { kk>z,A4
h_
int lowIndex = i; *$]50 \W
for (int j = data.length - 1; j > i; j--) { 2WK c;?
if (data[j] < data[lowIndex]) { +R8G*2
lowIndex = j; oNhCa>)/
} ^>/~MCyM.
} I:6H65(&
SortUtil.swap(data,i,lowIndex); `O0bba=:=
} SPT?Tt
} W"Tj.oCUG
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} :u]QEZ@@
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Shell排序: 6Vgxfic
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package org.rut.util.algorithm.support; =odK i "-6
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import org.rut.util.algorithm.SortUtil; ;I9g;}
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/** vw6>eT
* @author treeroot kGmz1S}2
* @since 2006-2-2 %At.nlss
* @version 1.0 RkZyqt
@+
*/ cJE4uL<
public class ShellSort implements SortUtil.Sort{ ~ <36vsk
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/* (non-Javadoc) WF_v>g:g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gNJdP!(t
*/ !bIE%cq
public void sort(int[] data) { EQtY b"_
for(int i=data.length/2;i>2;i/=2){ 5?Ukf$)x
for(int j=0;j insertSort(data,j,i); a9u2Wlz
}
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} bkuJN%
insertSort(data,0,1); ^[&,MQU{7
} Wl7S<>hg4
Q?V+
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/** */HW]x|?V~
* @param data |~o0-: 'C
* @param j 8VtRRtl
* @param i |>RNIJ]
*/ Jot7
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private void insertSort(int[] data, int start, int inc) { 6p9 {z42
int temp; V.%LA.8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]O>AD6P
} u9m ~1\R*
} 3a|pk4M
} AJ3%Z$JJ;s
6zi 5#23
} Y2IMHNtH
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快速排序: p, T4BO
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package org.rut.util.algorithm.support; I7W`\d)
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import org.rut.util.algorithm.SortUtil; _pmo
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/** ,^7]F"5
* @author treeroot 9 p,O>I
* @since 2006-2-2 Gr>CdB>~+
* @version 1.0 )FSEHQ
*/
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public class QuickSort implements SortUtil.Sort{ Be9,m!on
Y/5(BK)
/* (non-Javadoc) ~MP |L?my
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;%Px~g
*/ NG`Y{QT6N
public void sort(int[] data) { K$:+]fJK
quickSort(data,0,data.length-1); }g@
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} Sl-9im1
private void quickSort(int[] data,int i,int j){ :+
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int pivotIndex=(i+j)/2; XjdHH.) S
file://swap {\vVzy,t7
SortUtil.swap(data,pivotIndex,j); :T|9;2
d"@ /{O^1
int k=partition(data,i-1,j,data[j]); Nw*F1*v`
SortUtil.swap(data,k,j); 4*L*"vKa
if((k-i)>1) quickSort(data,i,k-1); 6#AEVRJKU@
if((j-k)>1) quickSort(data,k+1,j); 'oK oF
p/88mMr
} 8rx|7
/** as'yYn8
* @param data rW090Py
* @param i Bd7B\zM
* @param j ^BM !TQ%!
* @return TtF+~K
*/ lT*@f39~g
private int partition(int[] data, int l, int r,int pivot) { ][b|^V
do{ ^|=P9'4Th
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LF
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SortUtil.swap(data,l,r); )t@9!V
} alB'l
while(l SortUtil.swap(data,l,r); Aix6O=K6
return l; :<mJRsDf
} F+GX{e7E\
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} yXoNfsv
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改进后的快速排序: =36fS/Gb
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package org.rut.util.algorithm.support; tGgDS)
SO.u0!
import org.rut.util.algorithm.SortUtil; j
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/** x=IZ0@p
* @author treeroot d:w/{m%#
* @since 2006-2-2 gS'7:UH,
* @version 1.0 >~Xe` }'
*/ Yku6\/^
public class ImprovedQuickSort implements SortUtil.Sort { 6PYm?i=p?
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private static int MAX_STACK_SIZE=4096; [^?i<z{0C
private static int THRESHOLD=10; Z'>UR.g
/* (non-Javadoc) ;HH%OfQq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `^,E4Q y
*/ Y<u%J#'[
public void sort(int[] data) { /Jc{aw
int[] stack=new int[MAX_STACK_SIZE]; 8nu!5 3
Pc =ei
int top=-1; FwlDP
int pivot; 8'L:D
int pivotIndex,l,r; |!9xL*A
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stack[++top]=0; {lH'T1^m
stack[++top]=data.length-1; ?O+.
&6C]|13;
while(top>0){ uS,?oS
int j=stack[top--];
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int i=stack[top--]; (oR~%2K
6u #eLs
pivotIndex=(i+j)/2; 1U#W=Fg'
pivot=data[pivotIndex]; _B#x{ii
jrFPd
SortUtil.swap(data,pivotIndex,j); /FE+WA}r
U3z23LgA
file://partition YJMs9X~3
l=i-1; ['Lo8 [
r=j; #^r-D[/m
do{ [8UZ5_1W L
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R.*;] R>M
SortUtil.swap(data,l,r); <W!n lh
} 2I}+AW!!=
while(l SortUtil.swap(data,l,r); ,*U-o}{8C?
SortUtil.swap(data,l,j); 717THci3Y
Wz=&
0>Mm_
if((l-i)>THRESHOLD){ D ka8[z7
stack[++top]=i; N2U&TCc
stack[++top]=l-1; \1gAWUt('
} hHTt-x#
if((j-l)>THRESHOLD){ i9zh
X1#
stack[++top]=l+1; >J3mta3
stack[++top]=j; \XmplG:
} k kAg17 ^
y>x"/jzF#
} iAQ[;M3p
file://new InsertSort().sort(data); y705
insertSort(data); 2w3LK2`ZL
} i
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/** u-|%K.A
* @param data -%Vh-;Ie(
*/ d@g2 9rs
private void insertSort(int[] data) { +B " aUF
int temp; L=qhb;[L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l"E{ ?4
} s7sd(f]=
} $3l#eKZA
} .z_nW1id
{Kr}RR*{X
} ~`&4?c3p
D((/fT)eD
归并排序: ~y"R{-%uS
?]Hs~n-
package org.rut.util.algorithm.support; (^FMm1@T
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import org.rut.util.algorithm.SortUtil; eA(\#+)X `
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/** O0z-jZ,])
* @author treeroot NR(rr.
* @since 2006-2-2 USN'-Ah
* @version 1.0 o
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*/ ?>*d82yO
public class MergeSort implements SortUtil.Sort{
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i^jM9MAi
/* (non-Javadoc) O4f9n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lf^
7|
*/ Y=<ABtertS
public void sort(int[] data) { ~FYC'd
int[] temp=new int[data.length]; *!y04'p`<
mergeSort(data,temp,0,data.length-1); c^1JSGv
} OfBWf6b
aC1 xt(
private void mergeSort(int[] data,int[] temp,int l,int r){ 89D`!`Ah]
int mid=(l+r)/2; 3{co.+
if(l==r) return ; rwUhNth-Qh
mergeSort(data,temp,l,mid); =Xr{ Dg
mergeSort(data,temp,mid+1,r); ,e1c,}
for(int i=l;i<=r;i++){ uGXvP(Pg'
temp=data; SGZYDxFC@
} EJC}"%h
int i1=l; um]*nXIr
int i2=mid+1; 1_LKqBgo
for(int cur=l;cur<=r;cur++){ lY`WEu
if(i1==mid+1) "~=}&
data[cur]=temp[i2++]; T<7}IH$6xE
else if(i2>r) E#m^.B-}
data[cur]=temp[i1++]; YK8l#8K
else if(temp[i1] data[cur]=temp[i1++]; V4"o.G3\o
else M_E$w$l2<
data[cur]=temp[i2++]; adoK-bS t
} YGChVROG~
}
!vl1#@
bupW*fD:
} sOWP0xY
wd|^m%
改进后的归并排序: 5?>Q[a.Ne
"N%W5[C{
package org.rut.util.algorithm.support; j^ 8Hjg
7SkW!5
import org.rut.util.algorithm.SortUtil; ,:}VbQ:3I
md{1Jn"
/** 78xiT
* @author treeroot 6@^
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* @since 2006-2-2 B\AyG4J
* @version 1.0 r\b$/:y<e
*/ -6F\=
public class ImprovedMergeSort implements SortUtil.Sort { u{WI 4n?
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h=
private static final int THRESHOLD = 10; ]nIVP
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/* }o
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* (non-Javadoc) "0G)S'
* mp(:D&M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qx EmuiN
*/ O&.gc p!
public void sort(int[] data) { tJd/uQJ
int[] temp=new int[data.length]; ri"=)]
mergeSort(data,temp,0,data.length-1); x51p'bNy
} !_o1;GzK
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private void mergeSort(int[] data, int[] temp, int l, int r) { A#~CZQY^$
int i, j, k; PL\4\dXB
int mid = (l + r) / 2; !C' Y
7
if (l == r) Gqar5
return; "$%&C%t
if ((mid - l) >= THRESHOLD)
6 ;\>,
mergeSort(data, temp, l, mid); y>UQm|o<W
else /WAOpf5
insertSort(data, l, mid - l + 1); +@Kq
if ((r - mid) > THRESHOLD) uZ1G,9
mergeSort(data, temp, mid + 1, r); "[L+LPET
else =%FhY^-
insertSort(data, mid + 1, r - mid);
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,+n{xI2
for (i = l; i <= mid; i++) { 5iItgVTW
temp = data; = p2AK\
} C0e oV}
for (j = 1; j <= r - mid; j++) { M|z4Dy
temp[r - j + 1] = data[j + mid]; .0y .0=l
} Y5IQhV.
int a = temp[l]; Y-DHW/Z~
int b = temp[r]; $*0XWrE
for (i = l, j = r, k = l; k <= r; k++) { rJd-e96
if (a < b) { F+Hmp\rM#
data[k] = temp[i++]; Z
+}#
Ic
a = temp; FO|Eg9l
} else { hdH-VR4
data[k] = temp[j--]; d{'u97GDc
b = temp[j]; gWjz3ob
} |2X+( F Ed
} ]'i}}/}u2
} /LCRi
HFj@NRE6
/** a=^>A1=
* @param data h7\16j
* @param l pvqbk2BO
* @param i Q@l.p-:^U
*/ +r =p,leb
private void insertSort(int[] data, int start, int len) { ZoKX ao
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lS`VJA6l.
} x5W@zqj
} RjR
} g>f_'7F&
} :?gk=JH:
Q;p%
VQ
堆排序: CM%;r5
+u7nx
package org.rut.util.algorithm.support; za4:Jdr
V@ph.)z
import org.rut.util.algorithm.SortUtil; =G/`r!r*0I
AUkePp78
/** ,?!4P+ob
* @author treeroot G-T2b,J
[
* @since 2006-2-2 1FEY&rpR
* @version 1.0 :+S~N)0j^
*/
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public class HeapSort implements SortUtil.Sort{ -f[95Z3}
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/* (non-Javadoc) Zo5.Yse
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v/7iu*u
*/ F,
p~O{
Q
public void sort(int[] data) { dr7ry"5Zq
MaxHeap h=new MaxHeap(); :j#Fq
d[DF
h.init(data); }W R?n
for(int i=0;i h.remove(); M$GZK'%
System.arraycopy(h.queue,1,data,0,data.length); Jp`qE
} ulnlRx
PEAo'63$
private static class MaxHeap{ T
.L>PL?=
mOi 8W,2
void init(int[] data){ {BJn9B
this.queue=new int[data.length+1]; [mI;>q
for(int i=0;i queue[++size]=data; M)CE%/P
fixUp(size); UzmD2AsO"
} pSJc.j
} a<`s'N1G
k39;7J
private int size=0; ?qjlWCV|e
!+I!J
s"
private int[] queue; P"mD73a
(
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public int get() { tqe8:\1yK
return queue[1]; a)Ca:p
} B mxBbg
APu cA
public void remove() { js\|xfDxP
SortUtil.swap(queue,1,size--); /F6=iHK(l
fixDown(1); h/n&&J
} >)PcK
file://fixdown ;O7<lF\7o
private void fixDown(int k) { 9i+SU|;j
int j; w[wrZ:[
while ((j = k << 1) <= size) { </8F
if (j < size %26amp;%26amp; queue[j] j++; J'>i3eLq
if (queue[k]>queue[j]) file://不用交换 =XT}&D6
break; "V/6 nuCo
SortUtil.swap(queue,j,k); U#!f^@&AB
k = j; !G3d5d2)C
} 07L1 "
} o=VDO,eS
private void fixUp(int k) { 7Z<ba^r}
while (k > 1) { 6> Szxkz
int j = k >> 1; >A;9Ee"&
if (queue[j]>queue[k]) /?j
vv&
break; Lk|%2XGO&
SortUtil.swap(queue,j,k); r|tTDKGQ
k = j; XZFM|=%X
} _7"G&nZ0
} Pb^Mc <j
("L&iu\`@
} Bzw!,(u/
"
4U;6 2 jq
} k/ 9S
^B|Q&1
SortUtil: B@W`AD1^{
@ukIt
package org.rut.util.algorithm; !h0#es\
tb-:9*2j-
import org.rut.util.algorithm.support.BubbleSort; AG$S;)Yl9c
import org.rut.util.algorithm.support.HeapSort; ]dKLzW:l
import org.rut.util.algorithm.support.ImprovedMergeSort; &u'$q
import org.rut.util.algorithm.support.ImprovedQuickSort; f 6h!wx
import org.rut.util.algorithm.support.InsertSort; [nam H a
import org.rut.util.algorithm.support.MergeSort; X_eh+>D
import org.rut.util.algorithm.support.QuickSort; =i/7&gC
import org.rut.util.algorithm.support.SelectionSort; C"P40VQoo
import org.rut.util.algorithm.support.ShellSort; ,:QzF"MV
'bXm,Ed
/** 1c}
%_Z/
* @author treeroot A%pBvULH
* @since 2006-2-2 #X(KW&;m
* @version 1.0 .;0?r9
*/ IE-c^'W=}m
public class SortUtil { I(*4N^9++
public final static int INSERT = 1; O!D0hW4
public final static int BUBBLE = 2; !V6O~#
public final static int SELECTION = 3; q >|:mXR
public final static int SHELL = 4; ^Z{W1uYi
public final static int QUICK = 5; aD1G\*AFJ
public final static int IMPROVED_QUICK = 6; W~J>Srt
public final static int MERGE = 7; -4&SYCw
public final static int IMPROVED_MERGE = 8; f"j"ZM{~U
public final static int HEAP = 9; :i&ZMH,O
Lii,L}
public static void sort(int[] data) { \lnps f
sort(data, IMPROVED_QUICK); Ls#=R
} ]iyJ>fC
private static String[] name={ ESl-k2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" n'yC- ;
}; SJRiMR_F~
f<V#Yc(U}
private static Sort[] impl=new Sort[]{ :1eJc2o
new InsertSort(), 5m`@ 4%)zp
new BubbleSort(), \)=X=yn2
new SelectionSort(), yk4Huq&2
new ShellSort(), q#$4Kt;
new QuickSort(), 3:f<cy
new ImprovedQuickSort(), 3JiJ,<,7
new MergeSort(), ~@x@uY$5
new ImprovedMergeSort(), %8 )GuxG*
new HeapSort() tTT./-*0
}; )pS1yYLj
4 |ryt4B
public static String toString(int algorithm){ aD aQ7i
return name[algorithm-1]; Qo!/]\
} ckXJ9>
<m"yPi3TY
public static void sort(int[] data, int algorithm) { I-E}D"F;p[
impl[algorithm-1].sort(data); "(6]K}k@
} #-ioLt%
ZE@!s3\
public static interface Sort { 30(O]@f~
public void sort(int[] data); 2Rc'1sCth-
} xD}ha
2} ,|RQETy
public static void swap(int[] data, int i, int j) { mX)UoiXue
int temp = data; VuDSjh
data = data[j]; Kf<-PA
data[j] = temp; X&1R6O
} -'FzH?q:
} .u3!%{/v(c