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。 n"N!76
插入排序: oFB~)}f<v
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package org.rut.util.algorithm.support; 6Db1mvSe
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import org.rut.util.algorithm.SortUtil; }` E5I&r4
/** Rx<m+=
* @author treeroot {Lwgj7|~
* @since 2006-2-2 `*mctjSN
* @version 1.0 jq
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*/ *kY\,r&!P
public class InsertSort implements SortUtil.Sort{ AP'UcA
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/* (non-Javadoc) 7dyGC:YuTL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -D?T0>
*/ xQ\/6|
public void sort(int[] data) { {P"$;_Y"<
int temp; D+lzISp~e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); + ObP[F
} 7(rNJPrU~=
} [tGAo/
} D^yZ!}Kl
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} /{vv n
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冒泡排序: CMB:%
A&*lb7X
package org.rut.util.algorithm.support; ()e.J
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import org.rut.util.algorithm.SortUtil; ,V'+16xW
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/** VHwb 7f]gq
* @author treeroot 3/>T/To&2
* @since 2006-2-2 !G=!^RA
* @version 1.0 vM!lL6T:
*/ #_0OYL`(mE
public class BubbleSort implements SortUtil.Sort{ (JHzwI8+
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/* (non-Javadoc) c ]M!4.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `WQz_}TqB
*/ /yPFts_q
public void sort(int[] data) { ,~u 5SR
int temp; N7Vv"o
for(int i=0;i for(int j=data.length-1;j>i;j--){ l5_RG,O0A
if(data[j] SortUtil.swap(data,j,j-1); !
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} T;K@3]FbX
} E/2 kX 3}
} *yKw@@d+p
} F^.w:ad9<
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} o7 ^t-
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选择排序: d
4w+5H"u
FDBj<uXfM|
package org.rut.util.algorithm.support; ts%XjCN[
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import org.rut.util.algorithm.SortUtil; WP[h@#7<
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/** 1Z%^U ?
* @author treeroot B64L>7\>`
* @since 2006-2-2 -x)Oo`
* @version 1.0 AdB B#zd
*/ 12qX[39/
public class SelectionSort implements SortUtil.Sort { lx_jy>$}r
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,
/* VM=A#}
* (non-Javadoc) uJ<nW%}
* lVF}G[B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TbX#K:l
*/ e/hA>
public void sort(int[] data) { E0; }e
int temp; Br^4N9
for (int i = 0; i < data.length; i++) { tS#=I.ET
int lowIndex = i; C#{s[l \]
for (int j = data.length - 1; j > i; j--) { nAIV]9RAZ%
if (data[j] < data[lowIndex]) { 1bjhEOW
lowIndex = j; "P.H
} Z Ear~
} {=mf/3.r
SortUtil.swap(data,i,lowIndex); 9n4vuBgv
} Lt`d
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} uqe{F+;8&
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} h0}r#L
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Shell排序: c6/+Ye =h
Age
package org.rut.util.algorithm.support; =)_9GO
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import org.rut.util.algorithm.SortUtil; n7-|\p!xP6
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/** )H=}bqn
* @author treeroot /g$cQ=c
* @since 2006-2-2 yF2|w=!
* @version 1.0 tg =ClZ-
*/ ^w]N#%k\H
public class ShellSort implements SortUtil.Sort{ yKupPp);
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/* (non-Javadoc) r\nKJdh;ka
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1eQfc{[g
*/ rXl ~D!
public void sort(int[] data) { 7|$cM7_r
for(int i=data.length/2;i>2;i/=2){ #._%~}U
for(int j=0;j insertSort(data,j,i); .U}"ONd9e
} R>Q&Ax
} Ja1[vO"YgP
insertSort(data,0,1); ;k1\-
} 'dJ#NT25
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/** EJC{!06L'/
* @param data c%|K
x
* @param j Jv_KZDOdk
* @param i 'Mp8!9=&
*/ E|R^tETb
private void insertSort(int[] data, int start, int inc) { 8{DZew /
int temp; ;rwjqUDBz
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >
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} dL{zU4iUR
} 7b>FqW)%
} aC$-riP,?'
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} '+?L/|'
$ glt%a
快速排序: 2AYV9egZ
p@B/S(Xi
package org.rut.util.algorithm.support; +=.>9
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import org.rut.util.algorithm.SortUtil; o8<0#W@S
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/** rq#8}T>
* @author treeroot u7PtGN0r%
* @since 2006-2-2 4I"%GN[tA
* @version 1.0 z"7I5N
*/ s?-@8.@
public class QuickSort implements SortUtil.Sort{ ] oOSL=~c
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/* (non-Javadoc) M1nH!A~o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g2?kC^=z=
*/ #>O!N
public void sort(int[] data) { ^:krfXT
quickSort(data,0,data.length-1); hA?Flq2QV
} `O5 Hzb(}
private void quickSort(int[] data,int i,int j){ p2m@0ou
int pivotIndex=(i+j)/2; "gt-bo.,
file://swap 6yn34'yw
SortUtil.swap(data,pivotIndex,j); ,<Ag&*YE4
F7f psAt7
int k=partition(data,i-1,j,data[j]); %E<.\\^%
SortUtil.swap(data,k,j); U%.%:'eV=
if((k-i)>1) quickSort(data,i,k-1); g+(Cs
if((j-k)>1) quickSort(data,k+1,j); 4KbOyTQ
6_UCRo5h%
} @*Y"[\ "$
/** -4 *94<
* @param data 8x)&4o@
* @param i $] ])FM"b
* @param j " a&|{bv
* @return ]81t~t9LQ
*/ WFr;z*
private int partition(int[] data, int l, int r,int pivot) { F!k3/z
do{ &^q!,7.J
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c:*[HO\
SortUtil.swap(data,l,r); [ADSGnw
} #|92+
while(l SortUtil.swap(data,l,r); k4n4BL
return l; CBkI!
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} p :v'"A}
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} !O*'mX
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改进后的快速排序: %-nYK3
X
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package org.rut.util.algorithm.support; st_.~m!/
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import org.rut.util.algorithm.SortUtil; E=*82Y=B
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/** x]6-r`O7r
* @author treeroot 95XQ?%
* @since 2006-2-2 w}20l F
* @version 1.0 biLNR"/E
*/ +6zW(Ql/
public class ImprovedQuickSort implements SortUtil.Sort { 6%-RKQi
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private static int MAX_STACK_SIZE=4096; c*m7'\
private static int THRESHOLD=10; mp'Z.4
/* (non-Javadoc) LL0Y$pHV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K'6NW:zp~
*/ OfE>8*RI4
public void sort(int[] data) { ]2_b_ok
int[] stack=new int[MAX_STACK_SIZE]; _ww>u""B~
m}-*B1
int top=-1; S3?Bl'
int pivot; U}yq*$N
int pivotIndex,l,r; e7_.Xr~[
u# TNW.
stack[++top]=0; ^@V;`jsll
stack[++top]=data.length-1; -$ VP#%
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while(top>0){ [
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int j=stack[top--]; 7^oO
N+=d
int i=stack[top--]; |#b]e|aP
5V $H?MW>
pivotIndex=(i+j)/2; mi';96
pivot=data[pivotIndex]; LJ8 t@ui
gh?3 [q6
SortUtil.swap(data,pivotIndex,j); sQ}E4Iq1#S
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file://partition Xf YbWR
l=i-1; )K}-z+$)k
r=j; mf W}^mu
do{ q+Ec|Xd
e
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L*8U.{NY
SortUtil.swap(data,l,r); _'*Vcu`Y
} t?aOZps
while(l SortUtil.swap(data,l,r); Ueb&<tS
SortUtil.swap(data,l,j); d :vuRK4+
U [R[VY7
if((l-i)>THRESHOLD){ f=EWr8mno
stack[++top]=i; Ql1J?9W
stack[++top]=l-1; j[RY
} z 0}JiW R
if((j-l)>THRESHOLD){ zl3GWj|?\7
stack[++top]=l+1; RxYC]R^78
stack[++top]=j; ;Tec)Fl
} e~ZxDAd
t?(fDWd|-
} ~( ;HkT
file://new InsertSort().sort(data); aN;c.1TY
insertSort(data); -`A+Qp)
} 8yC/:_ML
/** 8+,I(+
* @param data 47=YP0r?>T
*/ Qx_]oz]NY
private void insertSort(int[] data) { ujf]@L?
int temp; 8Q(A1U
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :\]qB&
} q&kG>
} zN&m-nrw
} <'N~|B/yZ
N[zR%(YS
} o}=c(u
E*vh<C
归并排序: |%g)H,6c
]p@q.P
package org.rut.util.algorithm.support; DP.Y<V)B
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import org.rut.util.algorithm.SortUtil; +7mUX
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/** vhGX&
* @author treeroot UZ;FrQ(l{
* @since 2006-2-2 =lmelo#m&
* @version 1.0 tPb<*{eG
*/ %w;wQ_
public class MergeSort implements SortUtil.Sort{ j%)@f0Ng
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v
/* (non-Javadoc) o&)v{q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '[vCC'
*/ ~[Z(6yX
public void sort(int[] data) { jSQM3+`b
int[] temp=new int[data.length]; GQ 0(lS
mergeSort(data,temp,0,data.length-1); =bOMtQ]
} .1f!w!ltVR
E^B3MyS^^
private void mergeSort(int[] data,int[] temp,int l,int r){ N *,[(q
int mid=(l+r)/2; m>^vr7
if(l==r) return ; G2dPm}s ZG
mergeSort(data,temp,l,mid); xQ!
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mergeSort(data,temp,mid+1,r); IqFmJs|C
for(int i=l;i<=r;i++){ i
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temp=data; p+;;01Z+_
} 5Y>fVq{U?;
int i1=l; f{-,"6Y1
int i2=mid+1; u/apnAW@M
for(int cur=l;cur<=r;cur++){ ZmvtUma
if(i1==mid+1) a/n~#5-
data[cur]=temp[i2++]; (\%J0kR3[
else if(i2>r) ~g}blv0q+B
data[cur]=temp[i1++]; lXRB"z
else if(temp[i1] data[cur]=temp[i1++]; MM*9Q`cB
else (_R!:H(]m
data[cur]=temp[i2++]; w19OOD
} w>4( hGO
} Q2'`K|T
/jSb^1\
} ~m4LL[
n]8*yoge
改进后的归并排序: {S`Rr/E|%
N}Or+:"O:q
package org.rut.util.algorithm.support; NNBT.k3)
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import org.rut.util.algorithm.SortUtil; Rl'xEtaN
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/** 69 J4p=c,
* @author treeroot 1U(!%},
* @since 2006-2-2 F(`Q62o@
* @version 1.0 65GC7 >[
*/ G+tzp&G@
public class ImprovedMergeSort implements SortUtil.Sort { (!a\23
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private static final int THRESHOLD = 10; v}<z_i5/C.
Ky*xAx:
/* [$M l;K
* (non-Javadoc) Yc5<Y-W
* Lr Kx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RN$q,f[#
*/ Hp@cBj_@P2
public void sort(int[] data) { *f SX3Dk
int[] temp=new int[data.length]; X{iidTW`xv
mergeSort(data,temp,0,data.length-1); @ev^e!B
} PiLLUyQx
0ke1KKy/d
private void mergeSort(int[] data, int[] temp, int l, int r) { nyZ?m
int i, j, k; uN0'n}c;1.
int mid = (l + r) / 2; ~Fo`Pr_
if (l == r) @"iNjqxh
return; I#xhmsF
if ((mid - l) >= THRESHOLD)
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mergeSort(data, temp, l, mid); 3*R(&O6}
else +B7UGI
insertSort(data, l, mid - l + 1); =H"%{VeC5
if ((r - mid) > THRESHOLD) &VxK
AQMxN
mergeSort(data, temp, mid + 1, r); 2|`~3B)#
else KF7d`bRe
insertSort(data, mid + 1, r - mid); PAiVUGp5[
LNvkC4
for (i = l; i <= mid; i++) { akQb%Wq
temp = data; V3_qqz}`r
} oTA'=<W?D
for (j = 1; j <= r - mid; j++) { lEpPi@2PK
temp[r - j + 1] = data[j + mid]; 17VNw/Y
} 0.#%KfQ
int a = temp[l]; zu1gP/
int b = temp[r]; Xg;q\GS/<i
for (i = l, j = r, k = l; k <= r; k++) { &WdP=E"
if (a < b) { >P6U0
data[k] = temp[i++]; ! &V,+}>)
a = temp; eXdH)|l,\
} else { r<*Y1;7H'
data[k] = temp[j--]; UHDcheeRD
b = temp[j]; +PO& z!F
} mHc2v==X\-
} 7VJf~\%1j
} obw:@i#
?#__#
/** &jDRRT3
* @param data V{0 V/Nv
* @param l 7wqD_Xr
* @param i Z8pZm`g)T
*/ u[!Ex=9W
private void insertSort(int[] data, int start, int len) { E}]SGU"
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qche7kg!a
} tI2p-d9B
} Pv@;)s(-
} *8 ]
} U9AtC.IG!
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堆排序: +Jc-9Ko\c;
'`p0T%w
package org.rut.util.algorithm.support; vaZ?>94
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import org.rut.util.algorithm.SortUtil; a[gN+DX%L
r3.v ^
/** qxD<mZ@-R0
* @author treeroot wSs78c=
* @since 2006-2-2 ;<`
* @version 1.0 3lNw*M|")
*/ uMP&.Y(
public class HeapSort implements SortUtil.Sort{ ;}k_2mr~
X .S8vlb4z
/* (non-Javadoc) zdDJcdbGd1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !?)iP
*/ t{/
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public void sort(int[] data) { O0"&wvR+5
MaxHeap h=new MaxHeap(); i)e)FhEY6
h.init(data); yDw^xGws
for(int i=0;i h.remove(); "?sLi
System.arraycopy(h.queue,1,data,0,data.length); E9[8th,t
} '?!2h'
H
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private static class MaxHeap{ Q_a%$a.rV
Y'%_--
void init(int[] data){ ^F1zkIE
this.queue=new int[data.length+1]; mH3{<^Z6
for(int i=0;i queue[++size]=data; >JhIRf
fixUp(size); d>7bwG+k
} g:c
@
} 3!B3C(g
e 3>k"
private int size=0; "i*Gi
\U
RbNRBK!{
private int[] queue; gM3gc;
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public int get() { QfM*K.7Sl
return queue[1]; %x7l`.)N
} 8JAT2a61ur
Yui:=GgUrr
public void remove() { N,_ej@L8
SortUtil.swap(queue,1,size--); yc 5n
fixDown(1); -.WVuc`
} `+/[0B=.
file://fixdown h Tn^:%(
private void fixDown(int k) { B[MZPv)
int j; Bj7\{x,?
while ((j = k << 1) <= size) { -nT+!3A8
if (j < size %26amp;%26amp; queue[j] j++; Onoi6^G
if (queue[k]>queue[j]) file://不用交换 o[ %Q&u
break; XsHl%o8,z
SortUtil.swap(queue,j,k); HIeMV,.QN
k = j; }Mo9r4}
} 5cQBqH]
} c#;LH5KI
private void fixUp(int k) { "Hjw
while (k > 1) { cw <DM%p
int j = k >> 1; HwSPOII|8K
if (queue[j]>queue[k]) n*6',BY
break; fhn0^Qc"+
SortUtil.swap(queue,j,k); Tm^zoVi
k = j; AjANuyUaP
} ^NLKX5Q
} x{*!"a>
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} ?\F ,}e
{nOK*7+"
} T[q-$8U
r5iO%JFg
SortUtil: @#H{nj
Z
0I?3@Nz6
package org.rut.util.algorithm; IL:"]`f*
1I^Sv
import org.rut.util.algorithm.support.BubbleSort; :g9z^ $g
import org.rut.util.algorithm.support.HeapSort; JkxS1
import org.rut.util.algorithm.support.ImprovedMergeSort; FvI`S>
import org.rut.util.algorithm.support.ImprovedQuickSort; L
kq>>?T=
import org.rut.util.algorithm.support.InsertSort; (Fgt #H(B
import org.rut.util.algorithm.support.MergeSort; Nyqm0C6m^
import org.rut.util.algorithm.support.QuickSort; X)f"`$
import org.rut.util.algorithm.support.SelectionSort; |f?C*t',
import org.rut.util.algorithm.support.ShellSort; *u{.K:.I
1v\-jM"
/** M*S5&xpX
* @author treeroot fp![Pbms.
* @since 2006-2-2 Z%OS W
* @version 1.0 >;3c;nf
*/ 4QZy-a*tA
public class SortUtil {
B?%D
public final static int INSERT = 1; j'J*QK&Q
public final static int BUBBLE = 2; ia_8$>xW+
public final static int SELECTION = 3; VYAe!{[
public final static int SHELL = 4; 4COf H7Al9
public final static int QUICK = 5; YKc{P"'/|
public final static int IMPROVED_QUICK = 6; \!V6` @0KC
public final static int MERGE = 7; }\*Sf[EMD
public final static int IMPROVED_MERGE = 8; dw4)4_
public final static int HEAP = 9; +tN-X'u##
uATBt
public static void sort(int[] data) { *-Yw0Y[E
sort(data, IMPROVED_QUICK); .yP
3}Nl
} gwYd4
private static String[] name={ ^ KjqS\<
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t@HE.h
}; z0W+4meoH
4 z`5W,
private static Sort[] impl=new Sort[]{ XbOL/6V ^[
new InsertSort(), Mk9kGP%
new BubbleSort(), x/S% NySG
new SelectionSort(), tQ}gBE63
new ShellSort(), z*[Z:
new QuickSort(), j{Fo 6##
new ImprovedQuickSort(), 5Q}@Y3 i=
new MergeSort(), si;]C~X*
new ImprovedMergeSort(), d?P
aZz{4
new HeapSort() 0Yjy
}; &4[iC/}
1<p"z,c
public static String toString(int algorithm){ E>1USKxn
return name[algorithm-1]; Ji[w; [qL
} XN0Y#l
'~cEdGD9H
public static void sort(int[] data, int algorithm) { gPi_+-@
impl[algorithm-1].sort(data); }Tef;8d
} Mvh_>-i
#"M Pe4
public static interface Sort { *j*
WE\
public void sort(int[] data); fytx({I
.a
} e](=)h|
D/Wuan?yPN
public static void swap(int[] data, int i, int j) { z,7^dlT
int temp = data; o%5bg(
data = data[j]; uSQ*/h-<)0
data[j] = temp; s?E: ]
} X m3t
xp#
} >?'FH +2K