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。 m~;B:LN<
插入排序: u\f3qc,]F
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package org.rut.util.algorithm.support; iUTU*El>
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import org.rut.util.algorithm.SortUtil; L"^OdpOs
/** k=`$6(>Fz
* @author treeroot s"WBw'_<<
* @since 2006-2-2 #BsW
* @version 1.0 P].eAAXnP
*/ }-74 f
public class InsertSort implements SortUtil.Sort{ 9mDnKW
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/* (non-Javadoc) FI$XSG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) grspt}
*/ t{zBC?cR
public void sort(int[] data) { *jE;9^
int temp; h48YDWwy
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [X<Pk
} ;g+]klR!
} z6I% wh
} d*2u}1Jo8
0\Y1}C
} DHv2&zH
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冒泡排序: pM9yOY
2e59Ez%k6
package org.rut.util.algorithm.support; ^&Q<tN7
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import org.rut.util.algorithm.SortUtil; et` 0Je
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/** )S*1C@
* @author treeroot <: :VCA %
* @since 2006-2-2 $Asr`Q1i
* @version 1.0 g5Hr7Km
*/ /OG zt
public class BubbleSort implements SortUtil.Sort{ R&*@@F-dx
{n&Uf{
/* (non-Javadoc) k3>YBf`fC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W:vr@e6
*/ FY4 T(4#
public void sort(int[] data) { y^R4I_* z
int temp; ezUQ>
e
for(int i=0;i for(int j=data.length-1;j>i;j--){ RYy,wVh}
if(data[j] SortUtil.swap(data,j,j-1); pawl|Z'Ez
} aClA{
} g*J@[y;
} ~x#vZ=]8
} N}x9N.
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} s$ z2 c
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选择排序: >g}G}=R~3
X#`dWNrN
package org.rut.util.algorithm.support; "VTF}#Uo
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import org.rut.util.algorithm.SortUtil; DpvrMI~I_
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/** 3{ "O,h
* @author treeroot .3X Y&6
* @since 2006-2-2 A
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* @version 1.0 U\vY/6;JI
*/ 2 hq\n<
public class SelectionSort implements SortUtil.Sort { q.W>4 k
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/* a
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* (non-Javadoc) {v,)G)obWw
* -c+]Wm"\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i=#F)AD^5#
*/ !OAvD#
public void sort(int[] data) { %u!b& 5]e
int temp; !MV@)
(.
for (int i = 0; i < data.length; i++) { W5 ec
int lowIndex = i; #|f~s
for (int j = data.length - 1; j > i; j--) { JN(-.8<
if (data[j] < data[lowIndex]) { uMd. j$$
lowIndex = j; BJy;-(JP
} +>tUz D
} Fr [7
SortUtil.swap(data,i,lowIndex); x?sI;kUw8
} ej^3YNh&
} Ow/@Z7~
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} z 7T0u.4Ss
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Shell排序: m4m<nnM
2*1ft>Uty
package org.rut.util.algorithm.support; :L:&t,X
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import org.rut.util.algorithm.SortUtil; xDjV`E]
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/** Vw~\H Gs/~
* @author treeroot wT_h!W
* @since 2006-2-2 [*4fwk^
* @version 1.0 ,D=fFpn
*/ (S/F)?
public class ShellSort implements SortUtil.Sort{ z&}-8JykH
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/* (non-Javadoc) n}n EcXb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8dO?K*J,H'
*/ -x*2t;%z{U
public void sort(int[] data) { ELD!{bMT
for(int i=data.length/2;i>2;i/=2){ ] d?x$>
for(int j=0;j insertSort(data,j,i); C9~~O~7x
} Q[u6|jRt
} #&8rcu;/
insertSort(data,0,1); P'$ `'J]j
} I;MD>%[W,
h<l1U'Bn7
/** u{e-G&]^;
* @param data LKF/u` 0dP
* @param j k$i'v:c|:i
* @param i md Gwh7/3
*/ =xN= #
private void insertSort(int[] data, int start, int inc) {
%D=]ZV](
int temp; S::>N.y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); CA s>AXbs
} <V&5P3)d9
} rZ03x\2
} =:I+6PlF@
)A8v];.]3
} X$n(-65
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快速排序: dA~
3>f*b_
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package org.rut.util.algorithm.support; a2@c%i
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import org.rut.util.algorithm.SortUtil; Y3U9:VB
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/** 1Y j~fb(
* @author treeroot SZU
\i*
* @since 2006-2-2 g_.^O$}
* @version 1.0 Ri7((x]H"
*/ @x&P9M0g
public class QuickSort implements SortUtil.Sort{ 3lxc4@Zmd
TLa]O1=Bf.
/* (non-Javadoc) ~mz%E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q[4:
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*/ 2 -+f1,
public void sort(int[] data) { ",qU,0
quickSort(data,0,data.length-1); 1R%1h9I4'
} V|D]M{O
private void quickSort(int[] data,int i,int j){ 6sfwlT
int pivotIndex=(i+j)/2; w}cY6O,1
file://swap $7Jo8^RE
SortUtil.swap(data,pivotIndex,j); ed!>)Cb
(8a#\Y[b
int k=partition(data,i-1,j,data[j]); GIwh@4;
SortUtil.swap(data,k,j); clO,}Ph>
if((k-i)>1) quickSort(data,i,k-1); |AZW9
if((j-k)>1) quickSort(data,k+1,j); j Ch=@<9
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} ?)4?V\$
/** $14:(<
* @param data cQNs L
* @param i ?9+@+q
* @param j ^C)n$L>C0
* @return "f.Z}AbP
*/ >pL2*O^{9
private int partition(int[] data, int l, int r,int pivot) { .d<W`%[
do{ F'RUel_%
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k"UO c=
SortUtil.swap(data,l,r); m` AK~O2
} =qVP] 9
while(l SortUtil.swap(data,l,r); $^/0<i$
return l; }GwVKAjP
} 3
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} N3BL3:@O
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改进后的快速排序: "8f?h%t
j V3)2C}
package org.rut.util.algorithm.support; h!@,8y[B
b&)5:&MI
import org.rut.util.algorithm.SortUtil; ^Mkk@F&1
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/** Sb2v_o
* @author treeroot +xv!$gJEj
* @since 2006-2-2 z`Wt%tL(
* @version 1.0 :fcM:w&
*/ c,EBF\r8*
public class ImprovedQuickSort implements SortUtil.Sort { \/`?
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private static int MAX_STACK_SIZE=4096; 2.uA|~qH
private static int THRESHOLD=10; 1k8x%5p
/* (non-Javadoc) Pz_Oe,{.I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /lhz],w
*/ }Rvm &?~O
public void sort(int[] data) { sfT+i;p
int[] stack=new int[MAX_STACK_SIZE]; , :n|
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int top=-1; +>^7vq-\'
int pivot; ]w).8=I
int pivotIndex,l,r; <z+:j!~
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stack[++top]=0; b]Kk2S/
stack[++top]=data.length-1; 6(&Y(/
.\Fss(Zn
while(top>0){ <Cpp?DW_
int j=stack[top--]; rt7<Q47QE
int i=stack[top--]; Z [Xa%~5>5
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pivotIndex=(i+j)/2; `m@U!X
pivot=data[pivotIndex]; pcS+o
@ T;L$x
SortUtil.swap(data,pivotIndex,j); fG LG$b
@~
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file://partition c~,23wP1
l=i-1; eitu!=u
r=j; b8KsR=]4I
do{ c{#yx_)V&
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \0;(VLN'U
SortUtil.swap(data,l,r); )+y G+
} 8;P2A\X
while(l SortUtil.swap(data,l,r); i%Z2wP.o
SortUtil.swap(data,l,j); ;^u*hZN[Up
q z&+=d@
if((l-i)>THRESHOLD){ t G.(flW,
stack[++top]=i; m4w')r~
stack[++top]=l-1; )emOKS
} t@oK~ Nr
if((j-l)>THRESHOLD){ `iKj
stack[++top]=l+1; * A|-KKo\
stack[++top]=j; W`rNBfG>
} oP?YA-#nc
OKOu`Hz@
} yoe}$f4
file://new InsertSort().sort(data); imL_lw^?
insertSort(data); b;mSQ4+
} mg:!4O$K
/** iTo k[uJ}
* @param data `s#Hq\C
*/ m`?MV\^
private void insertSort(int[] data) { A1Y7;-D
int temp; <G8w[hs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %GEJnJ
} Rf %HIAVE
} hjx)D
} NtGn88='{
O;Y:uHf
} zzGYiF?
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归并排序: `\|ssC8u
~|Y>:M+0Z
package org.rut.util.algorithm.support; u'A#%}3
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import org.rut.util.algorithm.SortUtil; f3*?MXxb16
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/** =4!nFi
* @author treeroot "O>n@Q|
* @since 2006-2-2 1r)kR@!LNG
* @version 1.0 N)8HR9[!
*/ 8G%yB}pa
public class MergeSort implements SortUtil.Sort{ )x,8D ~p'
O{z}8&oR:
/* (non-Javadoc) r} _c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Yy&G\S
*/ !|?e7u7
public void sort(int[] data) { G28O%jD?
int[] temp=new int[data.length]; 5x2Ay=s
mergeSort(data,temp,0,data.length-1); ~q +[<xR\
} *v%rMU7,
L *[K>iW
private void mergeSort(int[] data,int[] temp,int l,int r){ wRNroQ
int mid=(l+r)/2; =dP{ Gh
if(l==r) return ; c>bq%}
mergeSort(data,temp,l,mid); 4IdT'
mergeSort(data,temp,mid+1,r); vm23U^VJ
for(int i=l;i<=r;i++){ O!1TthI
temp=data; <msxHw
} s$h]
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int i1=l; PG5- ;i/
int i2=mid+1; 0pe3L
for(int cur=l;cur<=r;cur++){ +0z 7KO%^^
if(i1==mid+1) d?,M/$h
data[cur]=temp[i2++]; 0\{BWNK
else if(i2>r) OU DcY@x~
data[cur]=temp[i1++]; 2h30\/xkU
else if(temp[i1] data[cur]=temp[i1++]; Pj#'}ru!
else cX!Pz.C
data[cur]=temp[i2++]; or ;f&![w
} ~rbIMF4T`]
} R614#yn-+
>"X\>M`"
} 0Rxe~n1o
H/F+X?t$0
改进后的归并排序: q]&.#&h
]ekk }0
package org.rut.util.algorithm.support; 3*_fzP<R
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import org.rut.util.algorithm.SortUtil; G1T^a>tj4
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/** !v#xb3"/
* @author treeroot {0\,0*^p
* @since 2006-2-2 _,h@:Xij
* @version 1.0 =(AtfW^H
*/ jLg@FDb~
public class ImprovedMergeSort implements SortUtil.Sort { -#`c5y}P
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private static final int THRESHOLD = 10; omZO+=8Q
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/* [^H"FA[
* (non-Javadoc) w&&2H8
* '$|UwT`s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Q`WB0E<|
*/ [jx0-3s:X
public void sort(int[] data) { }b3/b
int[] temp=new int[data.length]; 1-SVCk
-
mergeSort(data,temp,0,data.length-1); \~rlgxd
} "+ "{+k5t
`A%^UCd
private void mergeSort(int[] data, int[] temp, int l, int r) { 9e!NOl\_;.
int i, j, k; 5@osnf?
int mid = (l + r) / 2; {WN(&eax
if (l == r) [ANuBNF
return; w6|9|f/
if ((mid - l) >= THRESHOLD) 6x{<e4<n
mergeSort(data, temp, l, mid); s3s4OAY
else hi=XYC,
insertSort(data, l, mid - l + 1); ;_kzcK!l
if ((r - mid) > THRESHOLD) &UHPX?x
mergeSort(data, temp, mid + 1, r); 6"T['6:j
else k ^'f[|}
insertSort(data, mid + 1, r - mid); ?q2j3e[>
oj.A,Fh
for (i = l; i <= mid; i++) { x90*yaw>h
temp = data; :)f7A7 :;
} pfuW
for (j = 1; j <= r - mid; j++) { +y+"Fyl
temp[r - j + 1] = data[j + mid]; xk~IN%\
} &tR(n$M@>
int a = temp[l]; jPvDFT^d/
int b = temp[r]; 0:Xxl76v4
for (i = l, j = r, k = l; k <= r; k++) { n7aU<`U
if (a < b) { \ b8sG"G
data[k] = temp[i++]; !#ri5{od
a = temp; =Yo1v=wxN
} else { eS/B24;*
data[k] = temp[j--]; tU wRE|_
b = temp[j]; G>qZxy`c
} ".*x!l0y7
} co 4h*?q
} [t\B6XxT
t5k!W7C
/** %3;Fgk y
* @param data {'+QH)w(
* @param l z"4]5&3A
* @param i =`n]/L"Q
*/ mwv(j_
private void insertSort(int[] data, int start, int len) { 4o:hyh
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R$kpiqK
} =tTqN+4
} 2],_^XBvB
} z(uZF3
} MjfFf} @
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堆排序: PQW(EeQ
_#e&t"@GS
package org.rut.util.algorithm.support; v
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import org.rut.util.algorithm.SortUtil; 6~:Sgt nU
`[#x_<\t
/** :m=m}3/:
* @author treeroot OIHz I2{
* @since 2006-2-2 ?{"mP 'dD
* @version 1.0 :yT-9Ze%q
*/ W_O)~u8
public class HeapSort implements SortUtil.Sort{ a\uie$"cr]
/T^ JS
/* (non-Javadoc) F,Xo|jjj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hk_y/97OO
*/ v}G]X Z8
public void sort(int[] data) { #BK 9 k>i
MaxHeap h=new MaxHeap(); xynw8;Y,
h.init(data); 0XwHP{XaO
for(int i=0;i h.remove(); :A46~UA!$
System.arraycopy(h.queue,1,data,0,data.length); E{xVc;t
} XALI<ZY
*MNHT`Y^o
private static class MaxHeap{ a>4uiFiv
2g*J
void init(int[] data){ I:(m aMc
this.queue=new int[data.length+1]; NW|f7
ItX
for(int i=0;i queue[++size]=data; c9' '
fixUp(size); I0AJY
)R
} Uv_N x10
} ~cAZB9Fa
ub0zJTFJ#
private int size=0; k@>\LR/v
yDb'7(3-
private int[] queue; >e5 *prx+
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public int get() { -
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return queue[1]; gMWBu~;!
} AEmNHO@%q
>M%\T}5
public void remove() { ^da44Qqu
SortUtil.swap(queue,1,size--); (%CZ*L[9Z
fixDown(1); A|#`k{+1-
} |XYEn7^r
file://fixdown ?q`0ZuAg\<
private void fixDown(int k) { z_;3H,z`
int j; D8{D[fJ;
while ((j = k << 1) <= size) { js^ ,(CS
if (j < size %26amp;%26amp; queue[j] j++; 3>ex5
if (queue[k]>queue[j]) file://不用交换 foF19_2 ,
break; %1
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[
SortUtil.swap(queue,j,k); 148V2H)
k = j; QZAB=rR
} (w(
} -b&{+= ^c
private void fixUp(int k) { 5cr(S~Q;
while (k > 1) { zo{/'BnU
int j = k >> 1; A*h{Lsx;
if (queue[j]>queue[k]) h<<>3 A
break; m8Vdb"0
SortUtil.swap(queue,j,k); Z#d&|5Xj
k = j; BC>=B@H0
} Zd^6ulx
}
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j*@l"V>~
} Kyt)2p
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} ] H~4
wZT%Ee\D%
SortUtil: p?[Tm*r
2=0DCF;Bv
package org.rut.util.algorithm; $w)~O<_U
MfO:m[s
import org.rut.util.algorithm.support.BubbleSort; WtQ8X|\`
import org.rut.util.algorithm.support.HeapSort; gXT9 r' k
import org.rut.util.algorithm.support.ImprovedMergeSort; c5q9LQ/
import org.rut.util.algorithm.support.ImprovedQuickSort; [L`ZE*z
import org.rut.util.algorithm.support.InsertSort; M}:=zcZ l
import org.rut.util.algorithm.support.MergeSort;
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import org.rut.util.algorithm.support.QuickSort; y4Z&@,_{
import org.rut.util.algorithm.support.SelectionSort; rD?L
import org.rut.util.algorithm.support.ShellSort; I
+5)Jau^S
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/** &wd;EGGT!q
* @author treeroot ^m#-9- `
* @since 2006-2-2 WH ?}~u9
* @version 1.0 `.x$7!zLC
*/ 5Dp#u
public class SortUtil { a8u9aEB
public final static int INSERT = 1; dca;'$
public final static int BUBBLE = 2; 7*j
(*
public final static int SELECTION = 3; bn
6WjJ~Z+
public final static int SHELL = 4; qbrp P(.
public final static int QUICK = 5; I`[i;U{CK
public final static int IMPROVED_QUICK = 6; UT~a&u
public final static int MERGE = 7; kdz=ltw
public final static int IMPROVED_MERGE = 8; ,h|q i[7
public final static int HEAP = 9; yJuQ8+vgR}
['z[
public static void sort(int[] data) { j Ja$a [
sort(data, IMPROVED_QUICK); &aM7T_h8
} MT(o"ltQ
private static String[] name={ RMO,ZVq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -(#I3h;I
}; \
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I%|>2}-_U
private static Sort[] impl=new Sort[]{ /TS=7J#
new InsertSort(), r&-m=Kk$
new BubbleSort(), ,mRyQS'F
new SelectionSort(), Vcd.mE(t%
new ShellSort(), hF2IW{=!
new QuickSort(), A!1;}x
new ImprovedQuickSort(), $R<Me
new MergeSort(), {M,,npl
new ImprovedMergeSort(), 0$r^C6}f
new HeapSort() !lo/xQ<
}; \OlmF<~
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public static String toString(int algorithm){ (EPsTox
return name[algorithm-1]; "~TA SX_?
} KfF!{g f
\uss Uv
public static void sort(int[] data, int algorithm) { P%K4[c W~
impl[algorithm-1].sort(data); 54zlnM$
} Jk,;JQ
V I%
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public static interface Sort { |bgo;J/
public void sort(int[] data); x@8a''
} P2Vg 4
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public static void swap(int[] data, int i, int j) { \"hJCP?,
int temp = data; A!^q
J#
data = data[j]; &^4++
data[j] = temp; dz Zb
} `~eUee3b.~
} |Ph3#^rM?