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。 ^-3R+U- S
插入排序: z6tH2Wxf
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package org.rut.util.algorithm.support; N?d4Pu1m
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import org.rut.util.algorithm.SortUtil; $]/a/!d
/** Z3K~C_0Cnu
* @author treeroot .bh>_ W_h
* @since 2006-2-2 6x*u S~'
* @version 1.0 \JBJ$lBL
*/ h9)QQPP
public class InsertSort implements SortUtil.Sort{ /J8'mCuC.
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/* (non-Javadoc) &e\A v.n@-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $7{V+>
*/ 9}`A_KzFx
public void sort(int[] data) { 1uTbN
int temp; #D"fCVIS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wq!n8O1
} kve{CO*
} b {e nD
} :^mfTj$
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} *
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冒泡排序: pIh%5ZU
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package org.rut.util.algorithm.support; %(`4wo},
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import org.rut.util.algorithm.SortUtil; f!}c0nb
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/** 'J^E|1P
* @author treeroot .S&S#}$/]
* @since 2006-2-2 v_*E:E
* @version 1.0 kI974:e42
*/ YX+Da"\
public class BubbleSort implements SortUtil.Sort{ /8baJ+D"4\
G`NH~C
/* (non-Javadoc) }SHF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ET4 C/nb
*/ YcS}ug7
public void sort(int[] data) { 8H_3.MK
int temp; Qc2_B\K^
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?^9TtxM
if(data[j] SortUtil.swap(data,j,j-1); ``o:N`
} 8Ua;< h%
} Do}mCv
} S5ofe]tS@
} KOWx P47b
9
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} Lxm1.TOJ
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选择排序: >a98H4
P)~PrTa%
package org.rut.util.algorithm.support; 8o~<\eF%
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import org.rut.util.algorithm.SortUtil; vv,OBL~{
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/** O&93QN0
* @author treeroot T`46\KkN
* @since 2006-2-2 Zg%SE'kK
* @version 1.0 IEV3(qzt
*/ X%!#Ic]Q
public class SelectionSort implements SortUtil.Sort { kWL\JDZ`.
=V:rO;qX+@
/* .Ev i
* (non-Javadoc) (6p5Fo
* 'j];tO6GfC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uQ#3;sFO
*/ |MvCEp
public void sort(int[] data) {
xz YvD{>
int temp; :0pxacD"!
for (int i = 0; i < data.length; i++) { Y3jb'S4(
int lowIndex = i; DUiqt09`~
for (int j = data.length - 1; j > i; j--) { vyT$IdV2
if (data[j] < data[lowIndex]) { s% `o
lowIndex = j; Rxld$@~-(]
} ZWW:-3
} Y'kD_T`f,
SortUtil.swap(data,i,lowIndex); + oyW_!(
} D.|h0gU
} $H ^hK0?'
m*h
d%1D
} NG@9}O
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Shell排序: Kx 6_Vp
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package org.rut.util.algorithm.support; X\\WQxj
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import org.rut.util.algorithm.SortUtil; ,WbO8#z+
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/** 0mL#8\'"
* @author treeroot E]6C1C&K
* @since 2006-2-2 uYiM~^0
* @version 1.0 72} MspzUt
*/ [Z0 &`qz
public class ShellSort implements SortUtil.Sort{ yB(^t`)}N
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/* (non-Javadoc) 0Z#&!xTb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3/o-\wWO
*/ /AWV@'
public void sort(int[] data) { :*TfGV
for(int i=data.length/2;i>2;i/=2){ h,<%cvU=
for(int j=0;j insertSort(data,j,i); iNf+ -C3
} P5Ms
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} a;m-Vu!
insertSort(data,0,1); yef@V2Z+
} `p9h$d
d}%GHvOi
/** m6Q lIdl
* @param data yL&F!+(/Ix
* @param j (Ac
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* @param i ZVE q{x1Zc
*/ ]1rr$f9
private void insertSort(int[] data, int start, int inc) { $zq`hI!1
int temp; 9)s=%dL
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MsCY5g
} 31k.{dnm
} C/ow{MxA
} %v:9_nwO)
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} d@pD5n=m;
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快速排序: /og2+!
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package org.rut.util.algorithm.support; azz6_qk8
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import org.rut.util.algorithm.SortUtil; ( du<0J|PT
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/** )Ve?1?s '8
* @author treeroot OT{wqNI
* @since 2006-2-2 $/nU0W
* @version 1.0 YY{S0jnhF
*/ &%L1n?>Q}
public class QuickSort implements SortUtil.Sort{ Uaj8}7v
u!?.vx<qy
/* (non-Javadoc) 5E?{>1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GUE3|
*/ ^KhA\MzY
public void sort(int[] data) { wz31e!/
quickSort(data,0,data.length-1); 6",1JH,;p
} <i`Ipj
private void quickSort(int[] data,int i,int j){ =l&7~
int pivotIndex=(i+j)/2; #, W7N_mt
file://swap 0Pu$1Fp
SortUtil.swap(data,pivotIndex,j); 3D[IZ^%VtM
`omZ'n)
int k=partition(data,i-1,j,data[j]); *xA&t)z(i
SortUtil.swap(data,k,j); R
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if((k-i)>1) quickSort(data,i,k-1); WE 'afxgV
if((j-k)>1) quickSort(data,k+1,j); ^aN;M\
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} ko*Ir@SDv
/** U-#wFc2N
* @param data I0.{OJ-
* @param i SaMg)s~B
* @param j Ly/"da
* @return nJY#d;
*/ O8"kIDr-
private int partition(int[] data, int l, int r,int pivot) { L+7L0LbNU
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ey A}
SortUtil.swap(data,l,r); uj,YCJ8UZs
} *KN ' 0Z@W
while(l SortUtil.swap(data,l,r); ZGf R:a)wc
return l; 3|8\,fO?
} Z\D!'FX
oOUL<ihe?
} ,1EyT>
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改进后的快速排序: Eb{Zm<TP
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package org.rut.util.algorithm.support; uV`r_P
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import org.rut.util.algorithm.SortUtil; v#{Sx>lO
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/** <xOXuve
* @author treeroot ({i}EC7{
* @since 2006-2-2 QI'ul e
* @version 1.0 t J
N;WK.6
*/ /]=Ih
public class ImprovedQuickSort implements SortUtil.Sort { v\PqhI y"
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private static int MAX_STACK_SIZE=4096; zs:OHEZw
private static int THRESHOLD=10; :{bvCos<)
/* (non-Javadoc) #mLF6"A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u6Fm
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*/ Pky/fF7e
public void sort(int[] data) { RTHD2
int[] stack=new int[MAX_STACK_SIZE]; A^nB!veh
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int top=-1; =7wI/5iN
int pivot; l8 k@.<nCO
int pivotIndex,l,r; t Sran
9`]Gosz
stack[++top]=0; ~VYZu=p
stack[++top]=data.length-1; cw|3W]
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}
while(top>0){ uOUgU$%zqH
int j=stack[top--]; UJMM&
int i=stack[top--]; s.`:9nj
t>"UenJt-
pivotIndex=(i+j)/2; P|HxD0c^u
pivot=data[pivotIndex]; e=&,jg?K
"7}bU_" :s
SortUtil.swap(data,pivotIndex,j); 88x_}M^Fnl
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file://partition I
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l=i-1; hAX@|G.
r=j; jLo(Uf
do{ >? >@&A/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r0t4\d_&
SortUtil.swap(data,l,r); ^=`7]E [p
} OV/H&fe
while(l SortUtil.swap(data,l,r); x`~YTOfYk
SortUtil.swap(data,l,j); mrWPTCD{
5IE3[a%X
if((l-i)>THRESHOLD){ {2 l35K=
stack[++top]=i; {~q"Y]?
stack[++top]=l-1; `u6CuH5
} MIma:N_c
if((j-l)>THRESHOLD){ UtPFkase
stack[++top]=l+1; nX%b@cOXj
stack[++top]=j; uqy&PS
} =f0qih5.4
C'$w*^me
} ehCGu(=
file://new InsertSort().sort(data); 55Z)*JMv
insertSort(data); Nc;cb
} d1CQ;,Df<
/** @9#l3
* @param data QL/I/EgqC
*/ %d?.v_Hu0
private void insertSort(int[] data) { S;@nPzhc
int temp; vDI$
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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); t7GK\B8:
} 1%Hc/N-
} jHjap:i`cI
} Nl/^ga
@cYb37)q=
} W
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j=|cx+nb
归并排序: MXQua:&HW
wNc.z*+O"H
package org.rut.util.algorithm.support; $O
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import org.rut.util.algorithm.SortUtil; #<h//<
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/** u7||]|2
* @author treeroot PY81MTv0;
* @since 2006-2-2 (|O9L s7N
* @version 1.0 %M)LC>c
*/ rnAQwm-8O%
public class MergeSort implements SortUtil.Sort{ JR6r3W
vq?Le j
/* (non-Javadoc) 4# +i\H`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WSEw:pln
*/ hK]mnA[Y
public void sort(int[] data) { %lsRj)n
int[] temp=new int[data.length]; 7:/gO~gI
mergeSort(data,temp,0,data.length-1); <|-da&7
} T)c<tIr6
,J;Cb}
private void mergeSort(int[] data,int[] temp,int l,int r){ tzIcR
#Z
int mid=(l+r)/2; CghlyT
if(l==r) return ; \-?0ab3Z
mergeSort(data,temp,l,mid); L5[{taZ,
mergeSort(data,temp,mid+1,r); ;f?suawMv
for(int i=l;i<=r;i++){ ZLIt3
temp=data; c'|](vOd]
} ~fnu;'fN
int i1=l; N 2XL5<
int i2=mid+1; 4og/y0n,l"
for(int cur=l;cur<=r;cur++){ JjMa
if(i1==mid+1) i}Q"'?
data[cur]=temp[i2++]; W6c]a/
else if(i2>r) >U\1*F,Om,
data[cur]=temp[i1++]; ]`eP"U{
else if(temp[i1] data[cur]=temp[i1++]; 33},lNS|
else 216=7O2F
data[cur]=temp[i2++]; Wn%b}{9Fb
} Cer&VMrQK
} = Ed0vw
X 0vcBHh
} g1kYL$ o4
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sm
改进后的归并排序: ,A%p9
OLS/3c
z
package org.rut.util.algorithm.support; X
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m?O~(6k@C
import org.rut.util.algorithm.SortUtil; J?C#'2/
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/** 3N[Rrxe2
* @author treeroot Ce/l[v
* @since 2006-2-2 8bJj3vr
* @version 1.0 %*
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*/ H\fsyxM7
public class ImprovedMergeSort implements SortUtil.Sort { +'|nsIx,
Sx8RH),k
private static final int THRESHOLD = 10; i 558&:
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/* 5>6:#.f%!e
* (non-Javadoc) :X}n[K
* 9Iu"DOxX%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .H@b zm
*/ Cs4ks`Z18
public void sort(int[] data) { ~^TH5n
int[] temp=new int[data.length]; R53^3"q~
mergeSort(data,temp,0,data.length-1); Xp+lpVcJ
} r;^%D(
s*Nb=v.e9
private void mergeSort(int[] data, int[] temp, int l, int r) { bj6;>Ezp3(
int i, j, k; d&* c3F
int mid = (l + r) / 2; 2@N9Zk{{J
if (l == r) ZsNZ3;d@u(
return; s0O]vDTR,H
if ((mid - l) >= THRESHOLD) ZkJLq[:cM
mergeSort(data, temp, l, mid); I&U.5wf
else M5a&eO
insertSort(data, l, mid - l + 1); jM}(?^@
if ((r - mid) > THRESHOLD) n)0M1o#
mergeSort(data, temp, mid + 1, r); fK^W6)uuV
else s:k?-u@
insertSort(data, mid + 1, r - mid); Lb?WhjqZ
;}Ei #T,D
for (i = l; i <= mid; i++) { ",xTgB3?V
temp = data; f(G1xw]]@Y
} c@2a)S8Y]
for (j = 1; j <= r - mid; j++) { G@KDRv
temp[r - j + 1] = data[j + mid]; TSD7R
} 8@[S,[
int a = temp[l]; )@ofczl6
int b = temp[r]; jddhX]>I
for (i = l, j = r, k = l; k <= r; k++) { q3vv^~
if (a < b) { ]$uC~b
data[k] = temp[i++]; + ZKU2N*
a = temp; jOU99X\0
} else { ;X^#$*=Q
data[k] = temp[j--]; OxPl0-]t
b = temp[j]; &) 64:l&
} &:&~[4>%a
} ,5V6=pr$
} %AN,cE*
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/** #*q]^Is"
* @param data nG";?TT
* @param l ;\v&4+3S
* @param i TQu.jC
*/ =w* 8
private void insertSort(int[] data, int start, int len) { =;4K5l{c
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1c{m
rsB
} }N}Js*
} 2-DG6\QX|
} U)xebU.!S
} }hsNsQ
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堆排序: $KQ q~|
YKz#,
package org.rut.util.algorithm.support; 9%Tqk"x?
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import org.rut.util.algorithm.SortUtil; s=]NKJaQH
b*Q3j}c Z
/** $/lM %yXe
* @author treeroot D;s%cL`
* @since 2006-2-2 `#'j3,\6
* @version 1.0 pSb tm74
*/ fgs@oaoZ
public class HeapSort implements SortUtil.Sort{ c:e3hJ
PZQAlO,
/* (non-Javadoc) ^.R!sQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eKy!Pai
*/ w\MWr+4
public void sort(int[] data) { 4/%fpU2
MaxHeap h=new MaxHeap(); h=S7Z:IaM
h.init(data); W+GC3W
for(int i=0;i h.remove(); Vz$xV!
System.arraycopy(h.queue,1,data,0,data.length); ,p3]`MG
} X4]miUmh
eAo+w*D(
private static class MaxHeap{ m 94PFD@N
Q=8YAiCu
void init(int[] data){ bf@g*~h@
this.queue=new int[data.length+1]; 78{9@\e"0
for(int i=0;i queue[++size]=data; 'YB[4Q /0
fixUp(size); PJ;WNo8
} 5+11J[~{
} Lu{/"&)
G^tazAEfo
private int size=0; :'B(DzUR
SzIzQR93&
private int[] queue; :Fm*WqZu
>SLQW
public int get() { _}Qtx/Cg
return queue[1]; >O<a9wz
} l;KrFJ6
umWs8-'Uw
public void remove() { " >.tPn
SortUtil.swap(queue,1,size--); mW4Cc1*
fixDown(1); YnuY/zDF
} ,@c1X:
file://fixdown *1Bq>h:
private void fixDown(int k) { tVO}{[U}
int j; z
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while ((j = k << 1) <= size) { $1"gFg
if (j < size %26amp;%26amp; queue[j] j++; HA8A}d~
if (queue[k]>queue[j]) file://不用交换 J}&U[ds p
break; CV\^gTPmx
SortUtil.swap(queue,j,k); EYn?YiVFU
k = j; w$/lq~zU
} h$kz3r;b,"
} r&m49N,d
private void fixUp(int k) { I]`RvT
while (k > 1) { |YsR;=6wT
int j = k >> 1; l99Lxgx=
if (queue[j]>queue[k]) >zqaV@T
break; 4/|x^Ky>G
SortUtil.swap(queue,j,k); _,!0_\+i
k = j; ]y6{um8"
} gy%.+!4>v`
} Fy"M 4;7
Et!J*{s
} &n;*'M
W,NqevXo:
} `X5!s
>U,&V%y
SortUtil: ttUK~%wSx
t*9 gusmG
package org.rut.util.algorithm; I)V=$r{
g%l ,a3"
import org.rut.util.algorithm.support.BubbleSort; 'o6}g p)
import org.rut.util.algorithm.support.HeapSort; ",3v%$>
import org.rut.util.algorithm.support.ImprovedMergeSort; I{OizBom
import org.rut.util.algorithm.support.ImprovedQuickSort; pe
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import org.rut.util.algorithm.support.InsertSort; {o5|(^l
import org.rut.util.algorithm.support.MergeSort; k7Bh[ ..!
import org.rut.util.algorithm.support.QuickSort; )`rD]0ua;
import org.rut.util.algorithm.support.SelectionSort; I4G0!"T+
import org.rut.util.algorithm.support.ShellSort; LWv<mtuYf
b'\Q/;oz>
/** #0r~/gW
* @author treeroot Rb L?(
* @since 2006-2-2 ,Q56A#Y\
* @version 1.0 @KK6Jy OTQ
*/ {/]2~!
public class SortUtil { =}#yi<Lt
public final static int INSERT = 1; JY2<ECO
public final static int BUBBLE = 2; `jGeS[FhR
public final static int SELECTION = 3;
xcr2|
public final static int SHELL = 4; GMJ4v S
public final static int QUICK = 5; EjLq&QR.
public final static int IMPROVED_QUICK = 6; $KYGQP
public final static int MERGE = 7; WVRIq'
public final static int IMPROVED_MERGE = 8; `s)4F~aVo
public final static int HEAP = 9; V?j,$LixY
)vS0Au^C~
public static void sort(int[] data) { RFL*
qd4
sort(data, IMPROVED_QUICK); e&;e<6l&{
} (DO'iCxlNh
private static String[] name={ UsyNn39
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ob/)f)!!
}; y017
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6?F88;L
private static Sort[] impl=new Sort[]{ &N^~=y^`C'
new InsertSort(), _ l|%~
new BubbleSort(), ~D9Cu>d9
new SelectionSort(), &^"Ru?MK
new ShellSort(), @v%Kw e1Q
new QuickSort(), YbU8 xq
new ImprovedQuickSort(), 9!jPZn
new MergeSort(), OF7hp5
new ImprovedMergeSort(), j**[[
new HeapSort() FE\E%_K'n7
}; =$J(]KPv!?
4CF;>b
f~
public static String toString(int algorithm){ Ncz4LKzt
return name[algorithm-1]; #@B"E2F
} \:4*h
^[7Mp
public static void sort(int[] data, int algorithm) { +a!3*G@N+
impl[algorithm-1].sort(data); H ni^S
} ML_VD*t9
euB 1}M
public static interface Sort { fB3Jp~$
public void sort(int[] data); pq{`WgA^
} @!P2f
W^[FWFUTY
public static void swap(int[] data, int i, int j) { Y/5M)AyJt
int temp = data; 6Cj7 =|L7
data = data[j];
2'?'dfj
data[j] = temp; 23):OB>S`
} !G3AD3
} ,GH`tK_