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。 SRP.Mqg9
插入排序: ^<$$h
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package org.rut.util.algorithm.support; 4z;@1nN_8a
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import org.rut.util.algorithm.SortUtil; {zckY
/** 4J~ZZ
* @author treeroot XJ$mRh0`K
* @since 2006-2-2 m2{DLw".
* @version 1.0 ,ORwMZtw{H
*/ ;nSOeAF)Q
public class InsertSort implements SortUtil.Sort{ .
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/* (non-Javadoc) T'W@fif
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W5)R{w0`GD
*/ vk1E!T9X
public void sort(int[] data) { B@+&?%ub:
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `d,v
} *UerLpf
} W{El^')F
} ^Rpy5/d
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} w=;Jj7}L
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冒泡排序: }EMds3<
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package org.rut.util.algorithm.support; K|Cb6''
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import org.rut.util.algorithm.SortUtil; ?'8(']/
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/** 39yp1
* @author treeroot #$dEg
* @since 2006-2-2 !T|q/ri
* @version 1.0 X]1Q# $b
*/ }Sx+: N*
public class BubbleSort implements SortUtil.Sort{ Y[R;UJE`5
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/* (non-Javadoc) \@8.BCWK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m)q e
*/ zbL8
pp
public void sort(int[] data) { Iq?#kV9)
int temp; qlU"v)Mx
for(int i=0;i for(int j=data.length-1;j>i;j--){ Sb|9U8h
if(data[j] SortUtil.swap(data,j,j-1); >WZ_) `R
} 6OPYq*|
} [Yyb)Qf
} vVyX[ZZ
} x
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} AE@N:a
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选择排序: r7zS4;b
\UEO$~Km
package org.rut.util.algorithm.support; \i.Yhl:O
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import org.rut.util.algorithm.SortUtil; V4CL%i
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/** \'Z^rjB
* @author treeroot {Q(R#$)5+
* @since 2006-2-2 x-@}x@n&[
* @version 1.0 bm\Zp
*/ DX b=Ku
public class SelectionSort implements SortUtil.Sort { +M{A4nYY|1
S)\Yc=~h
/* L#~z#
* (non-Javadoc) w|G4c^KH
* 4Q?3gA1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?.~hex#M@
*/ V"u .u
public void sort(int[] data) { ,3,(/%=k
int temp; 7i##g,
for (int i = 0; i < data.length; i++) { [B1h0IR
int lowIndex = i; Oh'C[
for (int j = data.length - 1; j > i; j--) { (WuJ9
if (data[j] < data[lowIndex]) { [rO TWN
lowIndex = j; ^ fqco9^;
} y{#9&ct&
} \\(3gB.Gd
SortUtil.swap(data,i,lowIndex); HxnWM\ p
} sMDHg
} _0Z8V[
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} &57s//PrX
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Shell排序: ;56mkP
0ME.O+
package org.rut.util.algorithm.support; %SC%#_7
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import org.rut.util.algorithm.SortUtil; :YUQKy
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/** V+>.Gf
* @author treeroot B4RP~^
* @since 2006-2-2 /DxeG'O
* @version 1.0 py%_XL=w,
*/ slH3c:j\
public class ShellSort implements SortUtil.Sort{ ]1dnp]r
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/* (non-Javadoc) vD91t/_+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ \3j{pr
*/ nJr:U2d
public void sort(int[] data) { :p0<AU47
for(int i=data.length/2;i>2;i/=2){ @w
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for(int j=0;j insertSort(data,j,i); %<rV~9:
} %^ LwLyoVM
} w(cl,W/w
insertSort(data,0,1); I%'6IpR"d
} NA{?DSP
EF5:$#
/** X775j"<d
* @param data i"GCm`
* @param j q'CtfmI`r=
* @param i yr[HuwU
*/ jA,|.P>
private void insertSort(int[] data, int start, int inc) { %Q. |qyq
int temp; ) mh,F#"L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?Vo/mtbY5X
} ]S0sjN
} %(d0`9
} :&\^r=D
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} 0`~#H1TK
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快速排序: )D8V;g(7F
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package org.rut.util.algorithm.support; 2&KM&NX~
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import org.rut.util.algorithm.SortUtil; ~`!{5:v
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/** ~7O.}RP0
* @author treeroot jImw_Q
* @since 2006-2-2 N}X7g0>hV
* @version 1.0 @3WI7q4
*/ pUm|e5
public class QuickSort implements SortUtil.Sort{ 5K[MKfT
1Farix1YDq
/* (non-Javadoc) "H3DmsB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hw)#TEt
*/ 'E_~>
public void sort(int[] data) { p)YI8nW
quickSort(data,0,data.length-1); _2wH4^Vb
} Cw,;>>Y_b<
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; mY0FewwTy
file://swap *]+5T-R% $
SortUtil.swap(data,pivotIndex,j); rpMjDjW
x2.YEuSMC
int k=partition(data,i-1,j,data[j]); yl UkVr
SortUtil.swap(data,k,j); }e8u p*#me
if((k-i)>1) quickSort(data,i,k-1); l<dtc[
if((j-k)>1) quickSort(data,k+1,j); ]h4r@L3
=b/:rSd$NA
} y25L`b
/** ^7-l<R[T
* @param data @*"H{xo.U
* @param i "Wn8}T*
* @param j V)#rP?Y
* @return L3|~
i&k
*/ C~q&
private int partition(int[] data, int l, int r,int pivot) { 9Pjw<xt
do{ |N%#;7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); B4{clI _i
SortUtil.swap(data,l,r); `71(wf1q[f
} w+G+&ak<
while(l SortUtil.swap(data,l,r); Fh
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return l; atYe$Db
} 0.!!rq,
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} #J|DW C!#d
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改进后的快速排序: /6Olq6V
jPA^SxM
package org.rut.util.algorithm.support; U^Ulj/%6
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import org.rut.util.algorithm.SortUtil; aZB$%#'vR
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/** ^rssZQKY[
* @author treeroot 3R)_'!R[B
* @since 2006-2-2 \>lDM
* @version 1.0 ]mdO3P
*/ ^J?y
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public class ImprovedQuickSort implements SortUtil.Sort { [a!*m<
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private static int MAX_STACK_SIZE=4096; 2YhtD A
private static int THRESHOLD=10; :WHbwu,L$
/* (non-Javadoc) KreF\M%Ke
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5sI9GC
*/ 1`v$R0`!
public void sort(int[] data) { fYUbr"Oe
int[] stack=new int[MAX_STACK_SIZE]; I`4k5KB;
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int top=-1; u7}C):@H
int pivot; a1 .+L
int pivotIndex,l,r; LR Dj!{k{
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stack[++top]=0; EB2 5N~7
stack[++top]=data.length-1; v/z~ j
*7UDTgY
while(top>0){ -I*NS6
int j=stack[top--]; Z<W`5sop^
int i=stack[top--]; o*Kl`3=]
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pivotIndex=(i+j)/2; W'}^m*F
pivot=data[pivotIndex]; E-"b":@:
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SortUtil.swap(data,pivotIndex,j); ^gdv:[m
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file://partition bXRSKp[$
l=i-1; (bD'SWE
r=j; vR?E'K3
do{ SJ).L.Cm6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Rb
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SortUtil.swap(data,l,r); qY$]^gS
} *7G5\[gI$
while(l SortUtil.swap(data,l,r); WYY&MHp
SortUtil.swap(data,l,j); 3 Q~zli:
p}d+L{"V
if((l-i)>THRESHOLD){ W $E Ao+V
stack[++top]=i; yR4++yk
stack[++top]=l-1; _a-At
} 6'6,ySo]
if((j-l)>THRESHOLD){ t# <(Q
stack[++top]=l+1; .qg 2zE$0
stack[++top]=j; -cs$E2
-
} D,&o=EU
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],/ `
} dZ%rmTE(H
file://new InsertSort().sort(data); OoOr@5g
insertSort(data); '/
*;g#W=
} x}X
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/** $@@@</VbP
* @param data -cL wjI
*/ L2{b~`UvP
private void insertSort(int[] data) { r9!,cs
int temp; <)VNEy'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vCsJnKqK
} IXof-I%8
} @lTd,V5f
} f/3rcYR;y
+puF0]TR,i
} 1y7FvD~ v
jzAXC^FS
归并排序: M:d }
P
Ys+NIV#Q
package org.rut.util.algorithm.support; gN5;Uk
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import org.rut.util.algorithm.SortUtil; RAAu3QKu
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/** k5o{mWI b
* @author treeroot }^]TUe@a
* @since 2006-2-2 &9Xn:<"`)
* @version 1.0 t2RL|$>F1
*/ hd~0qK
public class MergeSort implements SortUtil.Sort{ bguTWI8bk
f/UIpswrZ'
/* (non-Javadoc) F@rx/3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $J!WuOz4^i
*/ lOu&4Kq{g
public void sort(int[] data) { [VY265)g
int[] temp=new int[data.length]; W~d^ *LZt
mergeSort(data,temp,0,data.length-1); 3fdqFJ O
} w'zSV1
EKf! j3
private void mergeSort(int[] data,int[] temp,int l,int r){ CQ/ps,~M
int mid=(l+r)/2; %{ +>\0x
if(l==r) return ; 0q_?<v_1
mergeSort(data,temp,l,mid); d0}P
mergeSort(data,temp,mid+1,r); ak$D1#hY
for(int i=l;i<=r;i++){ /5"RedP<
temp=data; NXSjN~aG2
}
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int i1=l; |0xP'(
int i2=mid+1; OXD*ZKi8
for(int cur=l;cur<=r;cur++){ BT*{&'\/
if(i1==mid+1) %hN7K
data[cur]=temp[i2++]; Y20T$5{#
else if(i2>r) ]qO*(m:}o
data[cur]=temp[i1++]; OSIf>1
else if(temp[i1] data[cur]=temp[i1++]; t 4>\;
else
%eW2w@8]
data[cur]=temp[i2++]; ^17i98w
} 't'2z
} o>e -M
h_\OtoRa
} mV#U=zqb!S
\VHRI<$+5
改进后的归并排序: 7[It
.F/0:)
package org.rut.util.algorithm.support; ^|ul3_'?
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import org.rut.util.algorithm.SortUtil; CM4#Nn=i~
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/** !;M5.Y1j&"
* @author treeroot wH]Y1 m
* @since 2006-2-2 tqzr+
* @version 1.0 ~vB dq Yj
*/ v{oHC4
public class ImprovedMergeSort implements SortUtil.Sort { PXo^SHJ+gt
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private static final int THRESHOLD = 10; ASULg{
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/* ^EcwY- Qr
* (non-Javadoc) u$ff %`E
* ,Y`TP4Ip
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w 3$9
*/ v?s%qb= T
public void sort(int[] data) { !n|4w$t"V
int[] temp=new int[data.length]; e~PAi8B5
mergeSort(data,temp,0,data.length-1); a3C\?5
} /kNSB;
QS%t:,0lp
private void mergeSort(int[] data, int[] temp, int l, int r) { z@U5
int i, j, k; UNyk,
#4
int mid = (l + r) / 2; To =JE}jzo
if (l == r) =PYS5\k
return; CSlPrx2\
if ((mid - l) >= THRESHOLD) |Pq z0n=v
mergeSort(data, temp, l, mid); ]:svR@E
else O7z5,-
insertSort(data, l, mid - l + 1); z,c=."<z
if ((r - mid) > THRESHOLD) H -t" Z}
mergeSort(data, temp, mid + 1, r); s7s@!~
else lX/:e=
insertSort(data, mid + 1, r - mid); wG
X\ub#!
Y{ OnW98
for (i = l; i <= mid; i++) { Tzr'3m_
temp = data; :&BE-f
} F5%IsAH
for (j = 1; j <= r - mid; j++) { AYv7-!Yk
temp[r - j + 1] = data[j + mid]; Ypwn@?xeP
} ]:.9:RmEV
int a = temp[l]; x\5v^$
int b = temp[r]; %s ">:
for (i = l, j = r, k = l; k <= r; k++) { :|\)=4
if (a < b) { w:/QB-`%
data[k] = temp[i++]; ky I~
a = temp; >DoP2]
} else { yeIcQ%
data[k] = temp[j--]; li9>zjz
b = temp[j]; S)x5.vo^
} MR/gLm(8(
} [WO>}rGw4
} ')>D*e
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/** Xk }\-&C7
* @param data *Ke\Yb
* @param l Uf#9y182*c
* @param i 9YY*)5eyD
*/ =i>i,>bv
private void insertSort(int[] data, int start, int len) { .4XX
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !#dp[,nk
} `u$lSGl
} Yz? 8n
} \-CL}Z}S
} .x][ _I>
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堆排序: SHRn$<
WB3YN+Xl3
package org.rut.util.algorithm.support; Lc_cB`
);d"gv(]D
import org.rut.util.algorithm.SortUtil; 4rUOk"li
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/** Y7<(_p7
* @author treeroot Y?\PU{O
* @since 2006-2-2 UnOcw
* @version 1.0 K[l5=)G0L
*/ MY l9 &8
public class HeapSort implements SortUtil.Sort{ mT,#"k8
t(p}0}Pp
/* (non-Javadoc) V z-]H]MW,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [}`-KpV!;
*/ Dr5AJ`y9A
public void sort(int[] data) { >\[| c
MaxHeap h=new MaxHeap(); G#j~8`3X
h.init(data); 'm k_s4J
for(int i=0;i h.remove(); $y,tR.5.)[
System.arraycopy(h.queue,1,data,0,data.length); Zw_'u=r
>
} a([8r- zP
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private static class MaxHeap{ 70.Tm#qh
Ch73=V
void init(int[] data){ g9gi7.'0
this.queue=new int[data.length+1]; remRmY?
for(int i=0;i queue[++size]=data; T+41,
fixUp(size); @k)[p+)E
} YRu#JYti
} ,$Xhwr
uLSuY}K0
private int size=0; Y=Om0=v
^y[- e9O|
private int[] queue; i9D<jkc
6mV^akapv
public int get() { U&0 RQ:B
return queue[1]; *vOk21z77d
} Fhga^.5U&
czT]XF
public void remove() { ]nq/yAF%
SortUtil.swap(queue,1,size--); :ka^ztXG
fixDown(1); =Y5_@}\0
} xM![
file://fixdown 6 tl#AJ-
private void fixDown(int k) { Fb6d1I^wR
int j; #~[{*[B+
while ((j = k << 1) <= size) { ^Vg-fO]V
if (j < size %26amp;%26amp; queue[j] j++; {'yr)(:2M
if (queue[k]>queue[j]) file://不用交换 H7}f[4S%
break; ^9 ^DA!'
SortUtil.swap(queue,j,k); {\gpXVrn_
k = j; gjk;An
} {43J'WsJ
} VcLzv{
private void fixUp(int k) { \i3)/sZ?l
while (k > 1) { j+("4b'
int j = k >> 1; ;cGY
if (queue[j]>queue[k]) >1$Vh=\OI
break; 'cA(-ghY/E
SortUtil.swap(queue,j,k); .JV y}^Q\
k = j; Rd[^)q4d$w
} rp=Y }
} w%- S5#
h!?rk|
} r9n:[A&HE
-Eoq#ULvR
} L| ;WE=
otlv;3263
SortUtil: eU\XAN#@
*z&hXYm
package org.rut.util.algorithm; +*wr=9>
t&~*!w!+jH
import org.rut.util.algorithm.support.BubbleSort; yz=aJ
v;
H
import org.rut.util.algorithm.support.HeapSort; 8khIy-9-'
import org.rut.util.algorithm.support.ImprovedMergeSort; -PTfsQk
import org.rut.util.algorithm.support.ImprovedQuickSort; }^2'@y!(
import org.rut.util.algorithm.support.InsertSort; onl,R{,`0
import org.rut.util.algorithm.support.MergeSort; (U@$gkUx}G
import org.rut.util.algorithm.support.QuickSort; 4+MaV<!tU^
import org.rut.util.algorithm.support.SelectionSort; M2I*_pI
import org.rut.util.algorithm.support.ShellSort; f o idneus
TQth"Cv2:
/** cp6I]#X
* @author treeroot \-8aTF
* @since 2006-2-2 &]pY~zVc
* @version 1.0 *W2o$_Hs
*/ c$x>6&&L
public class SortUtil { `eeA,K_
public final static int INSERT = 1; 9I(00t_
public final static int BUBBLE = 2; 49YN@PXC
public final static int SELECTION = 3; mJYD"WgY
public final static int SHELL = 4; A_crK`3
public final static int QUICK = 5; E] rBq_S
public final static int IMPROVED_QUICK = 6; gt\kTn."
public final static int MERGE = 7;
g([M hf#
public final static int IMPROVED_MERGE = 8; Hyi'z 1
public final static int HEAP = 9; odn3*{c{x
'V\V=yc1
public static void sort(int[] data) { R{pF IyR
sort(data, IMPROVED_QUICK); 4hzdc]
a
} @@ cc/S
private static String[] name={ bnJ4Edy
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7&u$^c S(
}; WEtPIHruyt
!|8"}ZF
private static Sort[] impl=new Sort[]{ &@=W+A=c~
new InsertSort(), Hwcm t!y
new BubbleSort(), M 0$E_*
new SelectionSort(), je%D&ci$
new ShellSort(), b@O{e QB
new QuickSort(), H4$f+
new ImprovedQuickSort(), NryOdt tI
new MergeSort(), jB`:(5%RO
new ImprovedMergeSort(), +!ZfJZls
new HeapSort() / }*}r
}; u:^sEk"Lk'
<GF^VT|Ce
public static String toString(int algorithm){ !t}yoN
n|
return name[algorithm-1]; wNU;gz
} ]r'D
.y lvJ$
public static void sort(int[] data, int algorithm) { [s{[
.0P]+
impl[algorithm-1].sort(data); txE+A/>i9
} :(@P
*"j
)_Z^oH ]<
public static interface Sort { ,T$ GOjt
public void sort(int[] data); 3R-5&!i
} M6GiohI_"P
Hg$7[um
public static void swap(int[] data, int i, int j) { X4{<{D`0t8
int temp = data; S&QXf<v
data = data[j];
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data[j] = temp; 0T^0)c
} )?pnV":2Y
} R:j
mn