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。 HP[M"u
插入排序: <io;d$=}
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package org.rut.util.algorithm.support; 9S<atMB
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import org.rut.util.algorithm.SortUtil; SG-Xgr@
/** h`V#)Q
* @author treeroot aHSl_[
* @since 2006-2-2 b|u0a6
* @version 1.0 q,.@<s W
*/ Y|F~w~Cb
public class InsertSort implements SortUtil.Sort{ Y86mg7[U/
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/* (non-Javadoc) G`FY[^:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4So
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*/ je5GZFQw
public void sort(int[] data) { k6^!G "
int temp; eq7>-Dmi@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]+@I]\S4
} $/$ 5{<
} ^ <+V[=X
} YiTVy/
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} DM3 %+ xY
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冒泡排序: fO 6Jug
y"Jma`Vjq
package org.rut.util.algorithm.support; h)sQ3B.}A
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import org.rut.util.algorithm.SortUtil; u=PYm+q{
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/** bt0Q6v5
* @author treeroot ,];QzENw
* @since 2006-2-2 rFG_CC2
* @version 1.0 <g{d>j
*/ "\l#q$1h
public class BubbleSort implements SortUtil.Sort{ asKAHVT(
nlR7V.
/* (non-Javadoc) )|E617g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #;F*rJ[XY
*/ &4jc3_UKV
public void sort(int[] data) { !ZzDSQ;
int temp; 9{XV=a v
for(int i=0;i for(int j=data.length-1;j>i;j--){ uN9J?j*ir
if(data[j] SortUtil.swap(data,j,j-1); TX$4x~:
} 3s$vaV~(a
} 9<-7AN}Z
} nn{PhyK
} _?c7{
4-~S"T8<u
} roHJ$~q?
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选择排序: {6gY6X-R
Ql{:H5
package org.rut.util.algorithm.support; "aJfW
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import org.rut.util.algorithm.SortUtil; 3\0,>L9ET@
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/** D;+sStZK3
* @author treeroot +$
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* @since 2006-2-2 K)s{D]B
* @version 1.0 /=S\v<z
*/ &v g[k#5
public class SelectionSort implements SortUtil.Sort { o' Kl+gw4
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/* #Mrc!pT]xy
* (non-Javadoc) W?R@ eq.9
* 7~m[:Eg6[s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v)%0`%nSR
*/ tDn:B$*}W,
public void sort(int[] data) { R 9b0D>Lxt
int temp;
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for (int i = 0; i < data.length; i++) { bSj-xxB]e
int lowIndex = i; JNxrs~}
for (int j = data.length - 1; j > i; j--) { r Zg(%6@
if (data[j] < data[lowIndex]) { 0vrx5E!
lowIndex = j; +CXtTasP
} #(G"ya
} pRGag~h|E
SortUtil.swap(data,i,lowIndex); Oe"nNvu/
} (svKq(X
} .r\|9 *j<
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} in#lpDa[
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Shell排序: )h`8</#m{
MWJ}
package org.rut.util.algorithm.support; D2 X~tl5<
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import org.rut.util.algorithm.SortUtil; L^xh5{
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/** J*;= f8
* @author treeroot 57[tUO
* @since 2006-2-2 xt1Ug~5
* @version 1.0 .njk^,N
*/ ~UQXt r
public class ShellSort implements SortUtil.Sort{ LW!>_~g-
%abc-q
/* (non-Javadoc) i>%A0.9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (DY&{vudF
*/ ]\(Ho
public void sort(int[] data) { \/F*JPhy
for(int i=data.length/2;i>2;i/=2){ XWag+K
for(int j=0;j insertSort(data,j,i); c)4L3W-x=
} ^"] ]rZ)
} e&-MP;kgW9
insertSort(data,0,1); Fuy"JmeR
} Wg\MaZ6Di
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/** j] J-#J
* @param data m"GgaH3,
* @param j "X \Yp_g
* @param i ,Rdw]O
*/ dheobD
private void insertSort(int[] data, int start, int inc) { K8RV=3MBLD
int temp; l-$5CO
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U<I]_]
} U88gJ[$
} 3@wio[
} l4*vM
*=X61`0
} 1'f&
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快速排序: rUh2[z8:
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package org.rut.util.algorithm.support; )>,ndKT~
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import org.rut.util.algorithm.SortUtil; -8:/My
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/** W#kd[Wi
* @author treeroot @]7s`?
* @since 2006-2-2 {'sp8:$a
* @version 1.0 %\T#Ik~3
*/ 5O[\gd-
public class QuickSort implements SortUtil.Sort{ #@L5yy2
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/* (non-Javadoc) ~(\.j=x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B["jndyr
*/ >!bw8lVV
public void sort(int[] data) { 'Lh nl3
quickSort(data,0,data.length-1); Q'rgh+6
} lP*p7Y '
private void quickSort(int[] data,int i,int j){ Vp&"[rC_z
int pivotIndex=(i+j)/2; M}]4tAyT
file://swap c!N#nt_<
SortUtil.swap(data,pivotIndex,j); TjicltQi4
X}g"_wN,g>
int k=partition(data,i-1,j,data[j]); z&yVU<;
SortUtil.swap(data,k,j); Mh]4K"cs
if((k-i)>1) quickSort(data,i,k-1); [*1:?mD$
if((j-k)>1) quickSort(data,k+1,j); M)3'\x:
)v\ A8)[
} 'm0_pM1:D
/** y+h/jEbM</
* @param data hWi2S!*Y
* @param i m-]F]c=)w<
* @param j Cd|rDa
* @return 80K"u[
*/ -ufaV#
private int partition(int[] data, int l, int r,int pivot) { 'LYN{
do{ X@za4d
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o)+C4f[G4
SortUtil.swap(data,l,r); AnoA5H
} P q1 j
while(l SortUtil.swap(data,l,r); Ml6}47n
return l; /0b7"Kr
} N
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} ^O<@I
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改进后的快速排序: }=A+W2D
Hi^Z`97c
package org.rut.util.algorithm.support; rJ(A O'=
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import org.rut.util.algorithm.SortUtil; C!Jy;Z=+u
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/** [9yd29pQ]
* @author treeroot ]e$n ;tuW
* @since 2006-2-2 .E;}.X
* @version 1.0 Ld
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*/ |XmzqX%
public class ImprovedQuickSort implements SortUtil.Sort { -Gjz+cRns
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private static int MAX_STACK_SIZE=4096; GJ:oUi
private static int THRESHOLD=10; 2V*;=cv~z
/* (non-Javadoc) J;ycAF ~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OZ/"W)
*/ H(kxRPH4@]
public void sort(int[] data) { =.l>Uw!
int[] stack=new int[MAX_STACK_SIZE]; mR~S$6cc
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int top=-1; >7z(?nQYT^
int pivot; lo-VfKvy
int pivotIndex,l,r; 5a4i)I63o
%~P3t=r
stack[++top]=0; ,YRBYK:
stack[++top]=data.length-1; #Q BW%L
JsEnhE}]
while(top>0){ WR_B:%W.
int j=stack[top--]; 4#W*f3d[@:
int i=stack[top--]; }!"Cvu
#)s
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pivotIndex=(i+j)/2; VVfTFi<
pivot=data[pivotIndex]; 9%2he)Yqc
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SortUtil.swap(data,pivotIndex,j); ZCA= n
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file://partition 8mt#S
l=i-1; *+(eH#_2/
r=j; .g94|P
do{ _#we1m
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -s\R2_(
SortUtil.swap(data,l,r); uQKo2B0
} QcX&q%*0
while(l SortUtil.swap(data,l,r); v1/Y0
SortUtil.swap(data,l,j); /#SH`ZK
1GPBqF
if((l-i)>THRESHOLD){ "LH3ZPD
stack[++top]=i; ?xuWha@:
stack[++top]=l-1; :w)9(5
} ;zd.KaS
if((j-l)>THRESHOLD){ GC_c.|'6[
stack[++top]=l+1; )~`UDaj_
stack[++top]=j; 'j!n
} ]W5p\(1g
`aA)n;{/2u
} "~KTLf
file://new InsertSort().sort(data); &Lbwx&!0b
insertSort(data); ?!.J0q
} bdEIvf7
/** lq a~ZF*
* @param data yqR]9"a
*/ mQ9shdvt-
private void insertSort(int[] data) { 'T7Y5X80$j
int temp; UID`3X
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wk'&n^_br
} d.
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} L-zU%`1{M
} 7Sh1QDYZ
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} '&$zgK9T?
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归并排序: 4vNH"72P
wFjQ1<s=
package org.rut.util.algorithm.support; gSf> +|
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import org.rut.util.algorithm.SortUtil; 1 |/ |Lq%w
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/** tY:,9eh7B
* @author treeroot _xBhMu2f
* @since 2006-2-2 EVE"F'Ww,_
* @version 1.0 &.PAIe.
*/ TI\EkKu"
public class MergeSort implements SortUtil.Sort{ 9<kMxtk$
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/* (non-Javadoc) irP*:QM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :^`WrcOJ
*/ FYb]9MX
public void sort(int[] data) { d[nz0LI|mk
int[] temp=new int[data.length]; U* uMMb}$
mergeSort(data,temp,0,data.length-1); 1&vR7z]*
} `wr*@/P
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private void mergeSort(int[] data,int[] temp,int l,int r){ o/[Ks;l
int mid=(l+r)/2; T_#8i^;D
if(l==r) return ; ):A.A,skf
mergeSort(data,temp,l,mid); _;:_ !`
mergeSort(data,temp,mid+1,r); }:QoY Nq
for(int i=l;i<=r;i++){ N vTp1kI]
temp=data; .~TI%
} NG23
int i1=l; W|(<z'S
int i2=mid+1; A,(9|#%L
for(int cur=l;cur<=r;cur++){ r;E5e]w*-
if(i1==mid+1) 3,#v0 #
data[cur]=temp[i2++]; Ndyo)11z
else if(i2>r) E`{DX9^
data[cur]=temp[i1++]; ]z| 2
else if(temp[i1] data[cur]=temp[i1++]; MXjN./
else K<%8.mZ7
data[cur]=temp[i2++]; p["pGsf
} TtQd#mSI\
} a^ys7UV
l.Z+.<@
} cr?ZXu_
E*kZGHA
改进后的归并排序: E>O@Bv
Xq "Es
package org.rut.util.algorithm.support; ;%cW[*Dw
8*|*@
import org.rut.util.algorithm.SortUtil; B__e*d:)!m
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/** Ekh)l0
l
* @author treeroot :LC3>x`:
* @since 2006-2-2 f zL5C2d
* @version 1.0 tV4wkS=R|
*/ $iA:3DM07
public class ImprovedMergeSort implements SortUtil.Sort { U-U(_W5&
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private static final int THRESHOLD = 10; M&sQnPFH
NL2D,
/* Q]/{6:C
* (non-Javadoc) %:Y(x$Qy
* B|{E[]iK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VW;E14
*/ (E~6fb"c
public void sort(int[] data) { ZS`Kj(D
int[] temp=new int[data.length]; 8o.|P8%
mergeSort(data,temp,0,data.length-1); =H}x
} dP>FXgY
)n[=)"rf
private void mergeSort(int[] data, int[] temp, int l, int r) { :"b :uQ
int i, j, k; Vn\jUEC
int mid = (l + r) / 2; j0 w@ \gO<
if (l == r) 8:0,jnS
return; Der'45]*^
if ((mid - l) >= THRESHOLD) mX?t|:[b
mergeSort(data, temp, l, mid); 7) af
else JxEz1~WK &
insertSort(data, l, mid - l + 1); !DHfw-1K
if ((r - mid) > THRESHOLD) P^U.VXY}
mergeSort(data, temp, mid + 1, r); .'h^
else oiD{Z
insertSort(data, mid + 1, r - mid); ml!c0<
BxZ7Bk
for (i = l; i <= mid; i++) { kpNp}b8']
temp = data; NJ;m&Tm,DF
} #.C2_MN>
for (j = 1; j <= r - mid; j++) { )5y"T0]
temp[r - j + 1] = data[j + mid]; WLta{A?
} 0O-"tP8o
int a = temp[l]; ( )f)
int b = temp[r]; xD sKb_
for (i = l, j = r, k = l; k <= r; k++) { ;>F1?5P{
if (a < b) { Y0m?ZVt
data[k] = temp[i++]; yJ6g{#X4K<
a = temp; hF`<I.z}
} else { 'tU \~3k
data[k] = temp[j--]; | h+vdE8
b = temp[j]; c\O2|'JzE
} !|- U,
} zJ:%iL@
} )_?h;wh 84
.MID)PY-
/** A>HCX 4i
* @param data j*;.>akY7
* @param l \~t!M~H
* @param i TmM~uc7mj
*/ %az6\"n
private void insertSort(int[] data, int start, int len) { G)_Zls2;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1K R4Wq@
} <(V~eo
e
} kLpq{GUv:
} PSX
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} hb
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堆排序: &] xtx>qg<
)r)ZmS5O
package org.rut.util.algorithm.support; 8#o2 qQ2+
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import org.rut.util.algorithm.SortUtil; 1?.NJ<)F
{vZAOz7#
/** u`Y~r<?P(
* @author treeroot 4x@W]*i
* @since 2006-2-2 Z)@[N
6\?
* @version 1.0 |sP0z !)b
*/ 6BM$u v4
public class HeapSort implements SortUtil.Sort{ S1m5z,G
#EB
Rc4>,
/* (non-Javadoc) .b^!f<j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %L
wq.
*/ %Y5F@=>&
public void sort(int[] data) { f&RjvVP?s
MaxHeap h=new MaxHeap(); ^62I 5k/u
h.init(data); <U\8&Uv>
for(int i=0;i h.remove(); NA`8 ^PZ
System.arraycopy(h.queue,1,data,0,data.length); g-NrxyTBlx
} ra_v+HR7
j'hWhLax
private static class MaxHeap{ I:YgKs)[
e#k)F.TZ:%
void init(int[] data){ >l=^3B,j
this.queue=new int[data.length+1]; IY
mkZ?cW
for(int i=0;i queue[++size]=data; HS\'{4P
fixUp(size); bw+IH-b
} Nw-U*y
} dy'lM ;@-
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private int size=0; !;hp
i'^! SEt
private int[] queue; f|)~_JH
vg_PMy\
public int get() { x\VP
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return queue[1]; bka%W@Y%
} Fdq5:v?k
!C^>tmqS
public void remove() { IR;3{o
SortUtil.swap(queue,1,size--); *&R|0I{>
fixDown(1); V)ag ss w?
} FP*kA_z$
file://fixdown FT-=^VA\
private void fixDown(int k) { }n'W0Sa
int j; [
q[2\F?CE
while ((j = k << 1) <= size) { ,Tk53 "
if (j < size %26amp;%26amp; queue[j] j++; zqZ/z>Gf
if (queue[k]>queue[j]) file://不用交换 NmF8BmIj
break; d 3#e7rQ8
SortUtil.swap(queue,j,k); {SRD\&J[
k = j; fE3%$M[V7
} }1lZW"{e[
} o#BI_#b
private void fixUp(int k) { uss!E!_%,
while (k > 1) { kf9]nIo
int j = k >> 1; imhE=6{
if (queue[j]>queue[k]) Gm0}KU
break; A:pD:}fm}D
SortUtil.swap(queue,j,k);
?.beN[X
k = j; h|lH`m^
} kXlI*h
} \|M[W~8
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} ap"pQ[t;
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} u),.q7(m
5l%g3F
SortUtil: }Gx@1)??
uf:'"7V7
package org.rut.util.algorithm; K*4ib/'E a
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import org.rut.util.algorithm.support.BubbleSort; HNlW.y"
import org.rut.util.algorithm.support.HeapSort; $'<$:;4b3
import org.rut.util.algorithm.support.ImprovedMergeSort; VRSBf;?
import org.rut.util.algorithm.support.ImprovedQuickSort; bMv[.Z@v(
import org.rut.util.algorithm.support.InsertSort; \%V !&
!'
import org.rut.util.algorithm.support.MergeSort; S?OCy4dk:
import org.rut.util.algorithm.support.QuickSort; Z/4bxO=m
import org.rut.util.algorithm.support.SelectionSort; "s(|pQh;
import org.rut.util.algorithm.support.ShellSort; ~lqNWL^l
j7NOYm5N
/** Z
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* @author treeroot !:tr\L {
* @since 2006-2-2 I#7H)^us
* @version 1.0 D-x*RRkpp
*/ Ra:UnA
public class SortUtil { vmo!
public final static int INSERT = 1; [
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public final static int BUBBLE = 2; `G:hC5B
public final static int SELECTION = 3; t\Qm2Q)>
public final static int SHELL = 4; Vh]=sd<F
public final static int QUICK = 5; X gtn}7N.
public final static int IMPROVED_QUICK = 6; L;+e)I]
public final static int MERGE = 7; c+8 Y|GB
public final static int IMPROVED_MERGE = 8; _x,(576~
public final static int HEAP = 9; /ZH* t \
5~E{bW$
public static void sort(int[] data) { Xr88I^F;
sort(data, IMPROVED_QUICK); :&2%x
} 1Oak8 \G
private static String[] name={ -SzCeq(p%5
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L6ypn)l
}; cFuQ>xR1
?MFXZ/3(ba
private static Sort[] impl=new Sort[]{ Q7/Jyx|
new InsertSort(), bBGg4{
new BubbleSort(), 4\uq$.f-
new SelectionSort(), ~SsfkM"
new ShellSort(), |t;Ktl
new QuickSort(), T|
R!Aw.
new ImprovedQuickSort(), rL?{+S]&^)
new MergeSort(), n0%S: (
new ImprovedMergeSort(), 3x
z
z*
<
new HeapSort() #Pg?T%('`
}; h53G$Ol.
4!
F$nmG)
public static String toString(int algorithm){ V!e*J,g
return name[algorithm-1]; #$!^1yO
} ?g0dr?H
{Hvkn{{'
public static void sort(int[] data, int algorithm) { ]+tO
impl[algorithm-1].sort(data); ]@ Vp:RGMr
} Y$+v "
2^U?Ztth6
public static interface Sort { qQ,(O5$|
public void sort(int[] data); dwiLu& ]u
} vVsaGW
=eh!eZ9
public static void swap(int[] data, int i, int j) { k RSY;V
int temp = data; BV\~Dm]"
data = data[j]; :X7O4?ww
data[j] = temp; 2|`Mb~E;
} s=z$;1C
} u~mpZ"9$ 3