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。 i+_=7(e
插入排序: qY'+@^<U;
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package org.rut.util.algorithm.support; Nnr[@^M5
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import org.rut.util.algorithm.SortUtil; BfCnyL%
/** _ `O",Ff
* @author treeroot 4b((,u$
* @since 2006-2-2 @"A
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* @version 1.0 WT")tjVKA
*/ _|cSXZ|
public class InsertSort implements SortUtil.Sort{ TQ:5@1aT
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/* (non-Javadoc) m.
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LwxJ:Kz.
*/ bvrXz-j
public void sort(int[] data) { - 0q263z
int temp; _9H]:]1QH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d>W#c8X>
} {.p;V
} ?U[6X|1
} %&VI-7+K
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} Y\WVkd(+G
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冒泡排序: >o v#\
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package org.rut.util.algorithm.support; i+in?!@G:
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import org.rut.util.algorithm.SortUtil; G`jvy@
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/** 7FyE?
* @author treeroot GnUD<P=I
* @since 2006-2-2 [KHlApL
* @version 1.0 s]6;*mI2
*/ u-s*k*VHoc
public class BubbleSort implements SortUtil.Sort{ 'J-a2oiM(
m;hp1VO)
/* (non-Javadoc) &+A78I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ks6iy}f7
*/ n1JV)4Mv
public void sort(int[] data) { +se OoTKR
int temp; MBw;+'93qf
for(int i=0;i for(int j=data.length-1;j>i;j--){ vu.?@k@
if(data[j] SortUtil.swap(data,j,j-1); V*fv>f:Yv
} .w@B )f*
} +Ek1~i.
} 9W]OtS G
} |<,0*2
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} ,Eh]Zv1AE
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选择排序: lF.kAEC
V!Sm,S(
package org.rut.util.algorithm.support; 3{t[>O;
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import org.rut.util.algorithm.SortUtil; ,dK)I1"C
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/** H25Qx;(dTk
* @author treeroot CueC![pj
* @since 2006-2-2 Sy1O;RTn`
* @version 1.0 |[mmEYc
*/ <%%)C>l
public class SelectionSort implements SortUtil.Sort { Qk>U=]U
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/* %,z;W-#gnY
* (non-Javadoc) 4%8den,|
* ?E+f<jol
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u kZK*Y9P
*/ CadIux^
public void sort(int[] data) { %xG<hNw/
int temp; nh5=0{va|L
for (int i = 0; i < data.length; i++) { U9^1A*
int lowIndex = i; @R%qP>_
for (int j = data.length - 1; j > i; j--) { IQtQf_"e1
if (data[j] < data[lowIndex]) { {r;_nMfH|[
lowIndex = j; kRwUR34yc
} X=abaKl
} f~Pce||e
SortUtil.swap(data,i,lowIndex); irq{ 21
} IvkYM`%
} ::#[lw
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} PX/{!_mM
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Shell排序: $57Q
g1v
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package org.rut.util.algorithm.support; N6u>V~i
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import org.rut.util.algorithm.SortUtil; 3Og}_
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/** sF[gjeIb
* @author treeroot X])iQyN
* @since 2006-2-2 Nb
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* @version 1.0 U?{oxy_[ 2
*/ Wu|MNB?M
public class ShellSort implements SortUtil.Sort{ X"q[rsB
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/* (non-Javadoc) eIF6f&
F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >lQa"F=
*/ D]*|Zmr+}
public void sort(int[] data) { }i^|.VZZ
for(int i=data.length/2;i>2;i/=2){ VY8cy2
for(int j=0;j insertSort(data,j,i); Cm%I/4
} n&P~<2^M#
} %~M* <pN
insertSort(data,0,1); uo2k
} Il*!iX|23<
4TPdq&';C:
/** 9DM,,h<`
* @param data m>P\}A^N
* @param j 9{Et v w
* @param i RC1bTM
*/ u<fZ.1
private void insertSort(int[] data, int start, int inc) { =$gBWS
int temp; Y7p@NG&1q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &ck}3\sQ
} #;^U W
} _z BfNz9D
} Q
Kr/
^JMG'@x
} |,oLZCNa
T!y 9v5
快速排序: EwV$2AK
H,GjPIG
package org.rut.util.algorithm.support; 4XER7c
1?|"33\03R
import org.rut.util.algorithm.SortUtil; oNPvks dC;
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/** g&F$hm
* @author treeroot nM.g8d K
* @since 2006-2-2 [Z:P{yr
* @version 1.0 inO;Uwlv
*/ u1y>7,Z6W
public class QuickSort implements SortUtil.Sort{ 8/tB?j
*aM7d>nG5
/* (non-Javadoc) Zv9JkY=+@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9XDSL[[
*/ x X3I`
public void sort(int[] data) { Q[NoFZ
V!
quickSort(data,0,data.length-1); ~>9G\/u j
} bK0(c1*a[e
private void quickSort(int[] data,int i,int j){ 9,_~qWw
int pivotIndex=(i+j)/2; S g1[p#U
file://swap SZr c-f_
SortUtil.swap(data,pivotIndex,j); ^ }5KM87
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int k=partition(data,i-1,j,data[j]); f9>pMfi:@
SortUtil.swap(data,k,j); yBs-bp"-
if((k-i)>1) quickSort(data,i,k-1); WLj]EsA.
if((j-k)>1) quickSort(data,k+1,j); [@VzpVhXz
G[ #R 1'
} SS`\_@ci
/** )mOM!I7D@
* @param data weu+$Kr
* @param i +8?18@obp
* @param j ,qp8Rg|3j
* @return 3]JJCaf
*/ ."BXA8c;A
private int partition(int[] data, int l, int r,int pivot) { juF=ZW%i
do{ 5&EBUl}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3$YbEl@#
SortUtil.swap(data,l,r); 0<@['W}G
} \rUKP""m
while(l SortUtil.swap(data,l,r); 8VQ!&^9!U#
return l; 5;/q[oXI
} }2RbX,0l9
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} LB]3-FsU+
K O\HH
改进后的快速排序: l"dXL"h
c\rP
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package org.rut.util.algorithm.support; }UGSE2^1
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import org.rut.util.algorithm.SortUtil;
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/** r`Fs"n#^-4
* @author treeroot z;9D[ME#1
* @since 2006-2-2 3zKeN:w
* @version 1.0 wt9f2
*/ iZnLgkk@
public class ImprovedQuickSort implements SortUtil.Sort { JSju4TQ4
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private static int MAX_STACK_SIZE=4096; qvy*;
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private static int THRESHOLD=10; RiR],Sj
/* (non-Javadoc) x!s=Nola
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QbHX.:C
*/ 9QHj$)?k,
public void sort(int[] data) { yZp/P %y
int[] stack=new int[MAX_STACK_SIZE]; |gxPuAXa)
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int top=-1; # =y)Wuo=
int pivot; ESoC7d&.K{
int pivotIndex,l,r; 'Y
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stack[++top]=0; s92ol0`
stack[++top]=data.length-1; 9Ca0Tu
7DK}c]js
while(top>0){ RaSuzy^`*]
int j=stack[top--]; -UidU+ES;
int i=stack[top--]; 0!%G#~th
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pivotIndex=(i+j)/2; 0%&}w UjV
pivot=data[pivotIndex]; )XSHKPTQ1
T&6>Eb0{
SortUtil.swap(data,pivotIndex,j); .Y7Kd+)s)L
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file://partition ,!^c`_Q\>@
l=i-1; I*>q7Hsu
r=j; q~aj"GD
do{ }L|B@fW
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G+2fmVB*X
SortUtil.swap(data,l,r); > fV"bj.
} .6rbn8h
while(l SortUtil.swap(data,l,r); W-r^ME
SortUtil.swap(data,l,j); |LLpG37_
ipGxi[Vav
if((l-i)>THRESHOLD){ Zi]E!Tgn
stack[++top]=i; Tzjv-9^V
stack[++top]=l-1; 0wTOdCvmb
} alzdYiGf
if((j-l)>THRESHOLD){ tXrKC
stack[++top]=l+1; oKz!Xu%Hl
stack[++top]=j; =IX-n$d`>
} $i<+O,@-
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} D{7^y>8_Y-
file://new InsertSort().sort(data); *wJz0ex7R/
insertSort(data); _(:$
:*@
} vc3r [mT
/** U&*%KPy`
* @param data 9L-jlAo<
*/ 1]0;2THx
private void insertSort(int[] data) { \X(*JNQ
int temp; SzeY?04zj:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P $y'``
} q4!\^HwQ
} &|'yqzS3
} Mby4(M+&n
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} qo\9,<
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归并排序: s"$K2k;J
8"d??3ZXJ
package org.rut.util.algorithm.support; jp4-w(
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import org.rut.util.algorithm.SortUtil; ,S(Z\[x0
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/** $Q'LDmot
* @author treeroot Jh%SenP_oP
* @since 2006-2-2 9o?\*{'KT
* @version 1.0 3
.j/D^
*/ RRQv<x
public class MergeSort implements SortUtil.Sort{ ->IZZ5G<
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/* (non-Javadoc) ;C1#[U1Uy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T)q
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H
*/ mb3aUFxA;
public void sort(int[] data) { BaP'y8dVN
int[] temp=new int[data.length]; tG9C(D`G
mergeSort(data,temp,0,data.length-1); &F7_0iAP(
} BL>~~
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private void mergeSort(int[] data,int[] temp,int l,int r){ 0cfGI%
int mid=(l+r)/2; @U?&1.\
if(l==r) return ; %52x:qGa
mergeSort(data,temp,l,mid); qW4\t
mergeSort(data,temp,mid+1,r); >Sw?F&
for(int i=l;i<=r;i++){ ra^%__N}
temp=data; Ax=)J{4v
} 16@<G
int i1=l; F+BCzsm7$
int i2=mid+1; @}PX:*c
for(int cur=l;cur<=r;cur++){ :YkAp9civ
if(i1==mid+1) {=&({ cS
data[cur]=temp[i2++]; uxKO"
else if(i2>r) G[u6X_Q
data[cur]=temp[i1++]; tZg)VJQys
else if(temp[i1] data[cur]=temp[i1++]; ndN*X'
else >hG*=4oh
data[cur]=temp[i2++]; hiV!/}'7
} }{,Wha5\n
} up8d3
>e.KD)qA
} ?5};ONjN
#J5_z#-Q;
改进后的归并排序: U6H3T0#
a\,V>}e
package org.rut.util.algorithm.support; NZ8X@|N
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import org.rut.util.algorithm.SortUtil; Tz9 (</y
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/** K(lVAKiP]
* @author treeroot ;;CNr_
* @since 2006-2-2 (OwGp3g
* @version 1.0 C}jrx^u>
*/ 'T qF}a7
public class ImprovedMergeSort implements SortUtil.Sort { wm?%&V/#
*""W`x
private static final int THRESHOLD = 10; i+T5(P$
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/* 5efN5Kt
* (non-Javadoc) SfY9PNck\
* %FqQ+0^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t"J{qfNs
*/ !:esdJH
public void sort(int[] data) { L0=`1q
int[] temp=new int[data.length]; <rui\/4NJ
mergeSort(data,temp,0,data.length-1); fJk'5kv
} Sj/v:
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private void mergeSort(int[] data, int[] temp, int l, int r) { o>yXEg
int i, j, k; MwQt/Qv=
int mid = (l + r) / 2; fiU#\%uJg
if (l == r) # SJJ@SM
return; _"t>72
`
if ((mid - l) >= THRESHOLD) S+t2k&pm
mergeSort(data, temp, l, mid); *6=9 8C4I
else )xz_}6b]
insertSort(data, l, mid - l + 1); NZ!I >
if ((r - mid) > THRESHOLD) 1#+|RL4o
mergeSort(data, temp, mid + 1, r); f4d-eXGwx`
else p_JWklg^
insertSort(data, mid + 1, r - mid); gk5Gf
l
mZ:#d;0
for (i = l; i <= mid; i++) { r>*+d|c4
temp = data; HmU6:8V
*Z
} #D{Eq8dp
for (j = 1; j <= r - mid; j++) { 9Nv?j=*$
temp[r - j + 1] = data[j + mid]; X$P(8'[9A
} [[N${ C
int a = temp[l]; ~>0H
k}Hv
int b = temp[r]; i tk/1
for (i = l, j = r, k = l; k <= r; k++) { ?0JNaf
if (a < b) { [^/a`Kda8
data[k] = temp[i++]; 2_M+o]Z^
a = temp; }o[<1+W(.
} else { q j9q
data[k] = temp[j--]; 61gyx6v
b = temp[j]; DYgB_Iak
} uT<<G)v)
} 9^Web~yi#
} MI:%Eq
d`5AQfL&
/** YvP62c \
* @param data 9~a 5R]x2
* @param l P-8QXDdr
* @param i LH`2Y,E
*/ nf&5oE^
private void insertSort(int[] data, int start, int len) { $o$WFV+h
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /<k5"C%z
} UH\{:@GjNO
} VUHf-bKl
} E
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} 1:@ScHS
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堆排序: Lh.-*H
>@4AxV\
package org.rut.util.algorithm.support; 3kF+wifsz
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import org.rut.util.algorithm.SortUtil; Q%J,:J
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/** OZ"76|H1`
* @author treeroot !g=b=YK
* @since 2006-2-2 R2 J A(Hn
* @version 1.0 =
8y,7u)
*/ jWh)bsqI!
public class HeapSort implements SortUtil.Sort{ !)W#|sys&
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/* (non-Javadoc) ryA+Lli.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |68/FJZ,5
*/ -O-?hsV)y
public void sort(int[] data) { g4 +Hq *
MaxHeap h=new MaxHeap(); .ns=jp
h.init(data); :^>&t^E
for(int i=0;i h.remove(); u5KAwMw%Q
System.arraycopy(h.queue,1,data,0,data.length); /nX_Q?mo
} IX<9_q
:7dc;WdM
private static class MaxHeap{ '}bmDb*
&o1k_!25
void init(int[] data){ V*Xr}FE
this.queue=new int[data.length+1]; )"6"g9A
for(int i=0;i queue[++size]=data; 1cRF0MI
fixUp(size); e+VE FWz
} h9iQn<lp4.
} F8Mf,jnPs
#qD[dC$[t
private int size=0; ]\L+]+u~
gm!sLZ!X
private int[] queue; 8.I3%u
3=} P l,
public int get() { asLrXGGyT
return queue[1]; |R!ozlL{}
} KHJ wCv
Vx>Q
public void remove() { pQC|_T#u
SortUtil.swap(queue,1,size--); s| Q1;%Tj
fixDown(1); *n[B Bz
} c813NHW
file://fixdown <X1lq9 lW
private void fixDown(int k) { _p'@.P
int j; -"H0Qafm
while ((j = k << 1) <= size) { w1VYU>
if (j < size %26amp;%26amp; queue[j] j++; "5sA&^_#_
if (queue[k]>queue[j]) file://不用交换 T.-tV[2
break; zn_#}}e;G
SortUtil.swap(queue,j,k); 7-~)/7L
k = j; ~%f$}{
}
8Djki]
} DQ[7p(
private void fixUp(int k) { d&f!\n_~
while (k > 1) { 3?L[ohKH?:
int j = k >> 1; r
)_*MPY
if (queue[j]>queue[k]) {d0-.
break; 7y)Ar 8!D
SortUtil.swap(queue,j,k); fk>{
k = j; ;c DMcKKIA
} 2efdJ&eIV
} BF;}9QebmS
/;1O9HJa
} Hz==,NR-W
#:/27
} FH$q,BI!R
_G'A]O/BZD
SortUtil: x#zj0vI-8
A,=>
|&*
package org.rut.util.algorithm; 1\Pjz
Lj
u^CL }t*
import org.rut.util.algorithm.support.BubbleSort; - _6`0
import org.rut.util.algorithm.support.HeapSort; .9,x_\|G*
import org.rut.util.algorithm.support.ImprovedMergeSort; "bWx<
import org.rut.util.algorithm.support.ImprovedQuickSort; lQvgq
import org.rut.util.algorithm.support.InsertSort; T:H~Y+qnt
import org.rut.util.algorithm.support.MergeSort; `YE=B{q
import org.rut.util.algorithm.support.QuickSort; S7#dyAX8
import org.rut.util.algorithm.support.SelectionSort; j|N<6GSke
import org.rut.util.algorithm.support.ShellSort; zH9*w:"4<_
.cw)Y#;IG
/** ,R3TFVV!?
* @author treeroot m.! M#x2!
* @since 2006-2-2 Di4GaKa/
* @version 1.0 >w,jaQ
*/ M+HhTW;I=
public class SortUtil { =l${p*ABQ
public final static int INSERT = 1; yG7H>LF?8
public final static int BUBBLE = 2; ^~7Mv^A
public final static int SELECTION = 3; :l1-s]
public final static int SHELL = 4; fiD,HGx
i
public final static int QUICK = 5; B$x@I\(M
public final static int IMPROVED_QUICK = 6; i'"#{4I
public final static int MERGE = 7; Rt&5s)O'
public final static int IMPROVED_MERGE = 8; y@1QVt04
public final static int HEAP = 9; .y3E@0a
3;> z %{
public static void sort(int[] data) { ]j6K3
sort(data, IMPROVED_QUICK); )cZHBG.0H
} H)"]I3
private static String[] name={ xa<KF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O"\_%=X9
}; }Bsh!3D<.
#)twk`!^
private static Sort[] impl=new Sort[]{ X"r.*fb;N
new InsertSort(), x|dP-E41\
new BubbleSort(), qBh@^GxY),
new SelectionSort(), oSkQ/5hg.
new ShellSort(), _od /)#
new QuickSort(), G e]NA]<
new ImprovedQuickSort(), g}gGm[1SUo
new MergeSort(), m{X{h4t
new ImprovedMergeSort(), S<cz2FlV
new HeapSort() 7
@}`1>97
}; q9j~|GE|
Dykh|"
public static String toString(int algorithm){ f5b|,JJ
return name[algorithm-1]; I2*(v%.-
} {f)aFGp
Kl%[f jI)
public static void sort(int[] data, int algorithm) { wCR! bZ w
impl[algorithm-1].sort(data); pUF JQ*
} '-Cx-=
fHEIys,{
public static interface Sort { t!6uz
public void sort(int[] data); a=A12<
} ]Sa#g&}T>
8]`s&d@GY
public static void swap(int[] data, int i, int j) { GIc q|Pe
int temp = data; zuW4gJ
data = data[j]; HR8YPU5
data[j] = temp; 0Ui_Trlc
} ecJjE
56P
} 1hgIR^;[b