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。 *wB1,U{
插入排序: n8ZZ#}Nhg
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package org.rut.util.algorithm.support; ExL0?FemWV
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import org.rut.util.algorithm.SortUtil; -4{<=y?"a
/** LuvY<~u
* @author treeroot (V67`Z )
* @since 2006-2-2 .jjG(L
* @version 1.0 JYbL?N
*/ Vb]=B~ ^`
public class InsertSort implements SortUtil.Sort{ x)O!["'"
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/* (non-Javadoc) ;,:`1UI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]K,Tnyp
*/ KF!Yf\
public void sort(int[] data) { Od,qbU4O
int temp; fSvM(3Y<Qh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R|87%&6']
} K} X&AJ5A
} =R$u[~Xl2X
} @>Km_Ax
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} ^ Q ?
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冒泡排序: _H7x9
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package org.rut.util.algorithm.support; N)\. [v
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import org.rut.util.algorithm.SortUtil; EDl!w:
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/** y(yHt=r
* @author treeroot HJ[c M6$2
* @since 2006-2-2 O:{~urV
* @version 1.0 #yF&X(%
*/ a fW@T2
public class BubbleSort implements SortUtil.Sort{ YHygo#4=8
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/* (non-Javadoc) yZ U6xY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6HWE~`ok6
*/
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public void sort(int[] data) { i#Bf"W{F
int temp; `%9 uE(
for(int i=0;i for(int j=data.length-1;j>i;j--){ ShP^A"Do
if(data[j] SortUtil.swap(data,j,j-1); u.m[u)HQ
} Zaf:fsj>
} jZkcBIK2
} FxWS V| Z
} ?_9
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} >7T'OC
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选择排序: fW1CFRHH
! Y~FLA_
package org.rut.util.algorithm.support; K)|G0n*qS
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import org.rut.util.algorithm.SortUtil; i^Y+?Sx
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/** A>;bHf@
* @author treeroot :g=qz~2Xk
* @since 2006-2-2 !6O(-S2A
* @version 1.0 .glA
gt
*/ ;)z:fToh
public class SelectionSort implements SortUtil.Sort { Y0dEH^I
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/* GdxnpE
* (non-Javadoc) V]e 8a"/[{
* Eib5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4IE]'##
*/ B:S>wFE(.
public void sort(int[] data) { i0kak`x0
int temp; }t=!(GOb}
for (int i = 0; i < data.length; i++) { A,Vu\3HS
int lowIndex = i; ub#a`
for (int j = data.length - 1; j > i; j--) { CMG&7(MR
if (data[j] < data[lowIndex]) {
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lowIndex = j; g-</ua(j
} DIfaVo/"
} ^]0Pfna+N
SortUtil.swap(data,i,lowIndex); :tB1D@Cb6
} iDz++VNV
} Sc1 8dC0
p\tm:QWD;
} kY|utoAP
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Shell排序: S\YTX%Xm}
gw3K+P
package org.rut.util.algorithm.support; #64-~NVL_
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import org.rut.util.algorithm.SortUtil; F Q7T'G![
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/** ~IfJwBn-i
* @author treeroot tGh~!|P
* @since 2006-2-2 aFb==73aLw
* @version 1.0 .B]MpmpK
*/ bz2ztH9 n
public class ShellSort implements SortUtil.Sort{ i$:*Pb3mV
v6M6>&RR|
/* (non-Javadoc) Vl/+;6_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d *|Y
o
*/ L~rBAIdD
public void sort(int[] data) { vrhT<+q
for(int i=data.length/2;i>2;i/=2){ JPc+rfF
for(int j=0;j insertSort(data,j,i); $%CF8\0
} sV{,S>s
} Sw8]EH6
insertSort(data,0,1); +mmSfuO&\
} T@:Wp4>69
9~5uaP$S
/** jrlVvzZ
* @param data ~ Ei $nV
* @param j ,]ma+(|
* @param i UXc-k
*/ hz;G$cuEE
private void insertSort(int[] data, int start, int inc) { h-#6av:
int temp; Ic"ybj`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Pw7]r<Q
} u<6<iD3y
} z0p*Z&
} iwZPpl";
F3v!AvA|
} x=hiQ>BIO0
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快速排序: I {S;L
0[NZ>7wqMZ
package org.rut.util.algorithm.support; M=.n7RY-
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import org.rut.util.algorithm.SortUtil; j^j1
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/** qPX~@^`9
* @author treeroot Sz)' ogl
* @since 2006-2-2 0_95|3kc
* @version 1.0 =)H.cuc
*/ w(*vj
public class QuickSort implements SortUtil.Sort{ +qtJaYf/0
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/* (non-Javadoc) (>UZ<2GPL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2\A$6N;_
*/ UUYSFa%
public void sort(int[] data) { g|DF[
quickSort(data,0,data.length-1); N=T<_`$5
} U3ADsdn
private void quickSort(int[] data,int i,int j){ t9k zw*U9
int pivotIndex=(i+j)/2; $k@O`xD,q
file://swap ??-[eB.
SortUtil.swap(data,pivotIndex,j); W+aP}rZm:
67JA=,EE
int k=partition(data,i-1,j,data[j]); 1b `1{%
SortUtil.swap(data,k,j); ~ drS} V
if((k-i)>1) quickSort(data,i,k-1); zH?!
if((j-k)>1) quickSort(data,k+1,j); VuhGx:Xl
*KZYv=s,u
} ?mwt~_s9
/** ]^. _z
* @param data RVnjNy;O`
* @param i iW]j9} t
* @param j v}}F,c(f
* @return 7Utn\l
*/ b$d;Qx
private int partition(int[] data, int l, int r,int pivot) { '%s.^kn
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [i21FX
SortUtil.swap(data,l,r); 9N#_(uwt
} a+[KI
while(l SortUtil.swap(data,l,r); *)$Uvw E
return l; >a!/QMh
} CTB~Yj@d+
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} $u$!tj
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改进后的快速排序: :)-Sk$
1E[J%Rh\l
package org.rut.util.algorithm.support; ,uSMQS-O'4
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import org.rut.util.algorithm.SortUtil; n$MO4s8)
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/** lK?uXr7^
* @author treeroot LiC*@W
* @since 2006-2-2 4M=]wR;
* @version 1.0 rT=rrvV3g
*/ ?qv
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public class ImprovedQuickSort implements SortUtil.Sort { <,3a3
BA @lk+aW
private static int MAX_STACK_SIZE=4096; FZ{h?#2?
private static int THRESHOLD=10; [SjqOTon{
/* (non-Javadoc) jnkR}wAA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !hA-_
*/ 6+#Ydii9E
public void sort(int[] data) { =m]v8`g
int[] stack=new int[MAX_STACK_SIZE]; 2prU
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int top=-1; GL>O4S<`
int pivot; R~TTL
int pivotIndex,l,r; bWjc'P6rx
]g#: KAqz
stack[++top]=0; fbyd"(V8r
stack[++top]=data.length-1; a(m2n.0'>
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while(top>0){ h/QXPdV
int j=stack[top--]; !4ocZmj\
int i=stack[top--]; wm+};L&_
q\9JgD)
pivotIndex=(i+j)/2; F#3Q_G^/
pivot=data[pivotIndex]; j"8ZM{aO
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SortUtil.swap(data,pivotIndex,j); [$ubNk;!z
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file://partition :tc@2/>!O
l=i-1; I {SjlN}d
r=j; Eh)fnqs_d}
do{ o@_q]/Mh
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \,'m</o~,
SortUtil.swap(data,l,r); :p1u(hflS
} 7zl5yKN
while(l SortUtil.swap(data,l,r); U"~>jZKk
SortUtil.swap(data,l,j); D5gFXEeh
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if((l-i)>THRESHOLD){ mtpeRVcF
stack[++top]=i; .97])E[U
stack[++top]=l-1; <jBF[v9*m(
} +i6GHBn~J
if((j-l)>THRESHOLD){ (=FRmdeYl1
stack[++top]=l+1; 1>.Ev,X+e
stack[++top]=j; 4V"E8rUL(
} 3#n_?-
O"+gQXe
} kl"hBK#D%
file://new InsertSort().sort(data); Ky`qskvu
insertSort(data); =?5]()'*n
} b.OsiT;_j
/** h<h%*av|
* @param data (Nq=H)cm8
*/ p
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private void insertSort(int[] data) { #]-SJWf3
int temp; lPe&h]@ >
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f'F?MINJP
} Q*GN`07@?d
} mwO6g~@`
} %J}xg^+f
*j|~$e}C
} 3h]g}&k
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归并排序: 5G}?fSQ>
Q1lyj7c#x
package org.rut.util.algorithm.support; M+oHtX$
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import org.rut.util.algorithm.SortUtil; uIY#e<)}G
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/** O4 w(T
* @author treeroot |o7[|3:M
* @since 2006-2-2 xKbXt;l2
* @version 1.0 SA:Zc^aV
*/ r[e##M
public class MergeSort implements SortUtil.Sort{ (xycJ`N
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/* (non-Javadoc) 6dHOf,zjm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z,RhYm
*/ Q(G#W+r
public void sort(int[] data) { pt?bWyKG
int[] temp=new int[data.length]; R-
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mergeSort(data,temp,0,data.length-1); HH`'*$]7
} L]7=?vN=8
/>C^WQI^
private void mergeSort(int[] data,int[] temp,int l,int r){ +8T?{K
int mid=(l+r)/2; "%)qRe
if(l==r) return ; \Zk;ikEY
mergeSort(data,temp,l,mid); cUk7i`M;6
mergeSort(data,temp,mid+1,r); `Uq#W+r,
for(int i=l;i<=r;i++){ vN}#Kc\
temp=data; b\f
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} #x@$lc=k3
int i1=l; eNh39er
int i2=mid+1; ^+ml5m
for(int cur=l;cur<=r;cur++){ WH%g(6w1j
if(i1==mid+1) cs48*+m
data[cur]=temp[i2++]; _r#Z}HK
else if(i2>r) ZT*ydln
data[cur]=temp[i1++]; '(6z.
toQ
else if(temp[i1] data[cur]=temp[i1++]; yHYsZ,GE
else `K"L /I9
data[cur]=temp[i2++]; v4<nI;Ux
} \Dm";Ay>
} 3l]lwV
'B$yo]
} SZ7:u895E
BX/8O<s0
改进后的归并排序: {'flJ5]
P.se'z)E
package org.rut.util.algorithm.support; rE7G{WII
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import org.rut.util.algorithm.SortUtil; h#I>M`|
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/** 4IK( 7
* @author treeroot fy1|$d{'
* @since 2006-2-2 Mc
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* @version 1.0 ]2A^1Del
*/ S)(.,x
public class ImprovedMergeSort implements SortUtil.Sort { + /G2fhE
-
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private static final int THRESHOLD = 10; 2YL?,uLS
+bxYGD
/* &$BjV{,/zc
* (non-Javadoc) 1y&\5kB
* >dXGee>'M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e)IzQ7Zex
*/ +.8
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public void sort(int[] data) { rw[ph[\X
int[] temp=new int[data.length]; d7^}tM
mergeSort(data,temp,0,data.length-1); b#c:u2
} &N9
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private void mergeSort(int[] data, int[] temp, int l, int r) { b)#hSjWO#
int i, j, k; -:^U_FL8un
int mid = (l + r) / 2; n)/z0n!\
if (l == r) ZmqKQO
return; QpH'PYy
if ((mid - l) >= THRESHOLD) -/B+T>[nTb
mergeSort(data, temp, l, mid); Z3e| UAif
else uh_RGM&
insertSort(data, l, mid - l + 1); *tFHM &a
if ((r - mid) > THRESHOLD) "s-"<&>a(
mergeSort(data, temp, mid + 1, r); a~`eQ_ND
else k8yEdi`
insertSort(data, mid + 1, r - mid); Eh`7X=Z7E
Ufj`euY
for (i = l; i <= mid; i++) { m,28u3@r
temp = data; ;]puq
} o#)C^xlQ
for (j = 1; j <= r - mid; j++) { 'c&Ed
temp[r - j + 1] = data[j + mid]; T.F!+
} hW')Sp
int a = temp[l]; P;y45b
int b = temp[r]; RU{twL.B
for (i = l, j = r, k = l; k <= r; k++) { ? V1*cVD6i
if (a < b) { yu {d! {6
data[k] = temp[i++]; t,Lrfv])
a = temp; udH7}K v
} else { ]]![EHi(\
data[k] = temp[j--]; TprTWod2]t
b = temp[j]; M.D1XX1/
} 1nM
#kJ"
} <{p4V|:
} 4KAZ ':
;}WeTA_-[
/** mUC)gA/
* @param data PQt")[
* @param l w(Ovr`o?9t
* @param i SGRp3,1\4%
*/ Jrf=@m\dk
private void insertSort(int[] data, int start, int len) { KkyVSoD\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }Bh8=F3O
Q
} :VBV&l`
[
} w/<L
Ag
} s+Pq&<nV-
} "^[ 'y7i
bP#:Oi0v`
堆排序: 9=M$AB
v"$L702d$\
package org.rut.util.algorithm.support; tT8%yG}
2|y"!JqE1
import org.rut.util.algorithm.SortUtil; +/7?HGf
u#fM_>ML
/** yzn%<H~
* @author treeroot GVr1`l
* @since 2006-2-2 TqQB@-!
* @version 1.0 /HEw-M9z
*/ s[*rzoA
public class HeapSort implements SortUtil.Sort{ .sW|Id )
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/* (non-Javadoc) Paq4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2qNt,;DQ
*/ @;4zrzQi7
public void sort(int[] data) { <}Vrl`?h
MaxHeap h=new MaxHeap(); 7+cO_3AB
h.init(data); s^TZXCyF o
for(int i=0;i h.remove(); %0?KMRr
System.arraycopy(h.queue,1,data,0,data.length); *Q.>-J<S
} CW K7wZM
uZYF(Yu
private static class MaxHeap{ }tuC}
Q*cf(
void init(int[] data){ <=&`ZH
this.queue=new int[data.length+1]; gg/-k;@ Rf
for(int i=0;i queue[++size]=data; iVr J Q
fixUp(size); ^CH=O|8j
} 8d{0rqwNE
} J{<X7uB
Hio0HL-
private int size=0; S+6.ZZ9c
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private int[] queue; {uFO/
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public int get() { V &T~zh1
return queue[1]; MJ)RvNF
} D)P ._?
3M`M
public void remove() { v/plpNVp>
SortUtil.swap(queue,1,size--); >6-`}G+|
fixDown(1); hfB%`x#akQ
} }v{LRRi
file://fixdown 3 \,4 ]l|
private void fixDown(int k) { 7EEl+;wK
int j; LOYk9m
while ((j = k << 1) <= size) { G!##X: 6'
if (j < size %26amp;%26amp; queue[j] j++; C.P*#_R
if (queue[k]>queue[j]) file://不用交换 MjRHA^b
break; $HzBD.CF|x
SortUtil.swap(queue,j,k); =XQ%t
@z0
k = j; ?j.,Nw4FC
} {YC@T(
} ]/6z;
~3U
private void fixUp(int k) { e`s
~.ZF
while (k > 1) { >R_&Ouh:
int j = k >> 1; G_JA-@i%
if (queue[j]>queue[k]) 372rbY
break; u#~RkY7s
SortUtil.swap(queue,j,k); (WJRi:NP?
k = j; Jpq~
} t?gic9
q
} T!{w~'=F
fOrH$?
} kZ:ZtE
f~[7t:WD*
} t@;p
wlvgg
SortUtil: Z{d^-
ajT*/L!0_
package org.rut.util.algorithm; I{2hfKUe`
C )
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import org.rut.util.algorithm.support.BubbleSort; 0+ '&`Q!u
import org.rut.util.algorithm.support.HeapSort; }<r)~{UV
import org.rut.util.algorithm.support.ImprovedMergeSort; $PPi5f}HD
import org.rut.util.algorithm.support.ImprovedQuickSort; Zi
i
import org.rut.util.algorithm.support.InsertSort; Q&;9x? e
import org.rut.util.algorithm.support.MergeSort; ?V=ZIGj
import org.rut.util.algorithm.support.QuickSort; ru%y
import org.rut.util.algorithm.support.SelectionSort; EZGIf/ 3
import org.rut.util.algorithm.support.ShellSort; *^4"5X@
eByz-,{P
/** e*C(q~PQ
* @author treeroot JQI: sj
* @since 2006-2-2 q;CiV
* @version 1.0 A)!*]o>U
*/ x,-75
public class SortUtil { ioCsV
public final static int INSERT = 1; "S]TP$O D
public final static int BUBBLE = 2; 3
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public final static int SELECTION = 3; BWrxunHO
public final static int SHELL = 4; BU_nh+dF
public final static int QUICK = 5; AT3Mlz~7#
public final static int IMPROVED_QUICK = 6; _{KG
4+5\X
public final static int MERGE = 7; ND;#7/$>
public final static int IMPROVED_MERGE = 8; %> eiAB_b
public final static int HEAP = 9; p2](_}PK
Kc-W&?~y#1
public static void sort(int[] data) { LRA8p<Rs
sort(data, IMPROVED_QUICK); n84|{l581
} SnfYT)Ph
private static String[] name={ 4VSU8tK|N]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Sm|6 %3
}; VA5xp]
CCx&7f
private static Sort[] impl=new Sort[]{ Hn"RH1Zy
new InsertSort(), u6agoK|^9
new BubbleSort(), n>YKa)|W`
new SelectionSort(), NLqzi%s
new ShellSort(), da(<K}
new QuickSort(), T5h
H
new ImprovedQuickSort(), 4[eXe$
new MergeSort(), cwg"c4V
new ImprovedMergeSort(), z:*|a+cy
new HeapSort() Z9|P'R(l
}; _D tV
/4Gt{ygSr
public static String toString(int algorithm){ 5j(k:a+!H
return name[algorithm-1]; ~>|ziHx
} 8 Z~EwY*
iBaA9
public static void sort(int[] data, int algorithm) { $&td=OK
impl[algorithm-1].sort(data); e"<OELA
} VPo".BvG6
,zjv7$L
public static interface Sort { ":ue-=&M
public void sort(int[] data); 0l6.<-f{
} (<9u-HF#
8A#;WG
public static void swap(int[] data, int i, int j) { 4hj|cCrO
int temp = data; =^?/+p8k
data = data[j]; 4pvMd
data[j] = temp; hgq;`_;1,
} 0=YI@@n)
} qE"OB