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。 5i0vli/L
插入排序: nk*T
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package org.rut.util.algorithm.support; !MyCxM6
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import org.rut.util.algorithm.SortUtil; ip+?k<]z
/** yC:C
* @author treeroot -=InGm\Y
* @since 2006-2-2 cU|tG!Ij?
* @version 1.0 TpGnSD
*/ \Dx;AK s
public class InsertSort implements SortUtil.Sort{ ?mp}_x#=
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/* (non-Javadoc) t"$#KP<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OTj
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*/ 'PvOOhm,
public void sort(int[] data) { wM``vx[/
int temp; Vr7L9%/wg
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3P *[!KI
} m4on<5s/
} iu iVr$E
} {00Qg{;K|
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} vnx+1T
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冒泡排序: r>lo@e0G
B!x7oD9
package org.rut.util.algorithm.support; Rd;^ fBx
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import org.rut.util.algorithm.SortUtil; "=Cjm`9~j
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/** j"
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* @author treeroot qQwf#&
* @since 2006-2-2 @M*oq2U;
* @version 1.0 &9ERlZ(A
*/ XI>HC'.0
public class BubbleSort implements SortUtil.Sort{ ^@
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/* (non-Javadoc) Pyp#'du>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ckkm}|&m
*/ T2}X~A
public void sort(int[] data) { 4C }#lW9
int temp; f_z]kA
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for(int i=0;i for(int j=data.length-1;j>i;j--){ !>?*gc.<
if(data[j] SortUtil.swap(data,j,j-1); Y^QG\6q
} !}hG|Y6s
} 'd]t@[#
} h,ipQ>
} GE*%I1?]
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} 98*C/=^TH{
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选择排序: M Al4g+es
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package org.rut.util.algorithm.support; ub]s>aqy
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import org.rut.util.algorithm.SortUtil; g'NR\<6A
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/** y9~:[ jB
* @author treeroot n^Q-K}!T/
* @since 2006-2-2 ;!B,P-Z"g
* @version 1.0 };g<|v*o
*/ A$n:
public class SelectionSort implements SortUtil.Sort { )T@?.J`
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/* GC[Ot~*_
* (non-Javadoc) L]E.TvM1*
* Q[9W{l+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A&{eC
C
*/ ZyV^d3F@$
public void sort(int[] data) { y;fnC5Q
int temp; C[CNJ66
for (int i = 0; i < data.length; i++) { hV NT
int lowIndex = i; ^fP5@T*f
for (int j = data.length - 1; j > i; j--) { ;P^}2i[q>[
if (data[j] < data[lowIndex]) { $XcuU
sG
lowIndex = j; 1]"S?
} drJUfsxV
} !1#=j;N`
SortUtil.swap(data,i,lowIndex); zh5ovA%
} kR<\iT0j
} t')%;N
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} ,L; y>::1
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Shell排序: qmtH0I7)
g6@^n$Y
package org.rut.util.algorithm.support; $U'*}S
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import org.rut.util.algorithm.SortUtil; l - ~PX
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/** \*Z:w3;r
* @author treeroot PJAM_K;
* @since 2006-2-2 m,Mg
* @version 1.0 T3t
w.yh
*/ =(Y+u
public class ShellSort implements SortUtil.Sort{ Wf=hFc1_@
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/* (non-Javadoc) d!y_N&z|(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y ^5RM
*/ &(NW_<(
public void sort(int[] data) { GmZ2a-M
for(int i=data.length/2;i>2;i/=2){ %F(lq*8X
for(int j=0;j insertSort(data,j,i); )Ut9k
} j|VX6U
} o`nJJ:Cxq-
insertSort(data,0,1); {*X|)nr
} HG3iK
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/** ?+L7Bd(EF%
* @param data ~I@ %ysR
* @param j gH0Rd
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* @param i >1q:-^
*/ >[g.8'hI
private void insertSort(int[] data, int start, int inc) { <<&SyP
int temp; e'~<uN>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZFtN~Tg
} RggO|s+0;
} 3m"9q
} 33NzQb
9Yji34eDZ
} v"dl6%D"
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快速排序: B~%SB/eu
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package org.rut.util.algorithm.support; E :UJ"6
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import org.rut.util.algorithm.SortUtil; z=TuUl@
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/** R".*dC,0'B
* @author treeroot C+0BV~7J<<
* @since 2006-2-2 p+Fh9N<F9
* @version 1.0 D"P<;@ef
*/ Kp[5"N8
public class QuickSort implements SortUtil.Sort{ /Tp>aW%}"
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/* (non-Javadoc) >n5Kz]]%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) avd`7eH2
*/ ki]i[cdk
public void sort(int[] data) { on f7V
quickSort(data,0,data.length-1); Olr'n% }
} o6 8;-b'n
private void quickSort(int[] data,int i,int j){ Yz>8 Nn '_
int pivotIndex=(i+j)/2; ]F4|@+\9
file://swap gO bP
SortUtil.swap(data,pivotIndex,j); Su k;##I
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int k=partition(data,i-1,j,data[j]); .WlZT-
SortUtil.swap(data,k,j); D`PA@t
if((k-i)>1) quickSort(data,i,k-1); wArzMt}[
if((j-k)>1) quickSort(data,k+1,j); bJL ,pe+u
t#7owY$^
} %D[6;PT
/** =Ct$!uun
* @param data Bacmrf
* @param i vH{JLN2
* @param j |k)Nf+(}W
* @return qhNYQ/uS
*/ ,sn
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private int partition(int[] data, int l, int r,int pivot) { cB7'>L
do{ ^/7Y3n!|3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u@kr;^m
SortUtil.swap(data,l,r); OZno 3Hn
} 3NrWt2?
while(l SortUtil.swap(data,l,r); &DWSu`z
return l; eX o@3/
} 9j$ J}=y
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} {y|j**NZ
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改进后的快速排序: trL8oZ6
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package org.rut.util.algorithm.support; "=*
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import org.rut.util.algorithm.SortUtil; n#)kvr
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/**
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* @author treeroot 0[fqF^HEN
* @since 2006-2-2 {(^%2dk83C
* @version 1.0 "ax"k0
*/ 3!u:*ibt
public class ImprovedQuickSort implements SortUtil.Sort { Ve4@^Jy;
pv,I_"
private static int MAX_STACK_SIZE=4096; IHj9n>c)[
private static int THRESHOLD=10; ]D|Hq4ug
/* (non-Javadoc) W.
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) usI$
*/ .0]Odf:@
public void sort(int[] data) { ;Y`k-R:E6A
int[] stack=new int[MAX_STACK_SIZE]; PA>su)N$
f=nVK4DuZ
int top=-1; q@Sj$
int pivot; sQ%gf
int pivotIndex,l,r; -P=Hp/ELi
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stack[++top]=0; O:W4W=K
stack[++top]=data.length-1; C9E@$4*
LArfX,x3i
while(top>0){ @8V~&yqq
int j=stack[top--]; S&;D
int i=stack[top--];
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pivotIndex=(i+j)/2; W&Kjh|[1QZ
pivot=data[pivotIndex]; [USE&_RN
3(>NS ?lX
SortUtil.swap(data,pivotIndex,j); !7aJfs2
Y,s@FGI2
file://partition 3dC;B@
l=i-1; </Ry4x^A
r=j; gD/% l[
do{ B;xGTl@8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F9C3i
SortUtil.swap(data,l,r); K!_''Fg
} _hs\"W
while(l SortUtil.swap(data,l,r); -O?&+xIK&
SortUtil.swap(data,l,j); ajALca4
6*=7ifS
if((l-i)>THRESHOLD){ wT-@v,$
stack[++top]=i; wv_<be[?*
stack[++top]=l-1; q.NvwJ
} 2q*aq%
if((j-l)>THRESHOLD){ ~F=,)GE
stack[++top]=l+1; -[.A6W
stack[++top]=j; 9aZ^m$tAt
} {aq}Q|?/
!0
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} L64cCP*
file://new InsertSort().sort(data); Q!"W)tD
insertSort(data); ]~-vU{
}
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/** rLOdQN
* @param data u3@v
*/ )90K^$93"
private void insertSort(int[] data) { 6b9&V`
int temp; o!ycVY$yW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZMI
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} DX%D8atrr
} ;m cu(J
} cWNWgdk,`V
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} Vm
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归并排序: !_SIq`5]@
1I -LGe[Q
package org.rut.util.algorithm.support; \w+a Q?e_
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import org.rut.util.algorithm.SortUtil; BbdJR]N/!h
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/** +1j+%&).
* @author treeroot OGqsQ
* @since 2006-2-2 %:WM]dc
* @version 1.0 [#-!&>
*/ Yab=p
9V;;
public class MergeSort implements SortUtil.Sort{ <m3or
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/* (non-Javadoc) yL>wCD,L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zc9j_.?*
*/ ,dO$R.h
public void sort(int[] data) { Jf{
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int[] temp=new int[data.length]; J%n{R60b
mergeSort(data,temp,0,data.length-1); 9x40
}
#RA3 T[A
J$Qm:DC5
private void mergeSort(int[] data,int[] temp,int l,int r){ ';hTGLq\X
int mid=(l+r)/2; <7%4=
if(l==r) return ; OnKPD=<
mergeSort(data,temp,l,mid); w(xRL#%
mergeSort(data,temp,mid+1,r); s"solPw
for(int i=l;i<=r;i++){ _noQk3N
temp=data; w>W`8P_b@
} Ft)Z'&L
int i1=l; L!]~J?)
int i2=mid+1; ttK`*Ng
for(int cur=l;cur<=r;cur++){ P_w\d/3
if(i1==mid+1) ,LHQ@/}A C
data[cur]=temp[i2++]; Mn=5yU
else if(i2>r) n_Ka+Y<
data[cur]=temp[i1++]; a} w%k
else if(temp[i1] data[cur]=temp[i1++]; OLdD3OI
else P6E=*^^m(
data[cur]=temp[i2++]; %$l^C!qcY
} Twj?SV
} ;I+"MY7D
oYG].PC
} 7Z;w<b~
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改进后的归并排序: !^|%Z
I'[hvp
package org.rut.util.algorithm.support; hR$lX8
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import org.rut.util.algorithm.SortUtil; v0dFP0.;&
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/** u%7a&1c
* @author treeroot ` tkd1M
* @since 2006-2-2 p]zYj >e
* @version 1.0 m7XJe[O
*/ x\Y%/C[Kc
public class ImprovedMergeSort implements SortUtil.Sort { wnE
c
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private static final int THRESHOLD = 10; |-zwl8E
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/* :8_`T$8i4
* (non-Javadoc) 9@yP;{Q
* -%=StWdb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $l&&y?()
*/ )Q\ZYCPOr
public void sort(int[] data) { P#H#@:/3
int[] temp=new int[data.length]; '^l/e: (H3
mergeSort(data,temp,0,data.length-1); |7Q8WjCQ{m
} wYf=(w\c
WRAW%?$
private void mergeSort(int[] data, int[] temp, int l, int r) { V=|^r?
int i, j, k; `~(C\+gUp
int mid = (l + r) / 2; ,h2q37
if (l == r) %uGA+ \b
return; B-[SUmHr
if ((mid - l) >= THRESHOLD) Xl6)&
mergeSort(data, temp, l, mid); &,Q{l$`X
else AEwb'
insertSort(data, l, mid - l + 1); UBRMV
s
if ((r - mid) > THRESHOLD) *eXO?6f%s^
mergeSort(data, temp, mid + 1, r); FZ>*<&
else |?Q(4(D`*
insertSort(data, mid + 1, r - mid); FGx_qBG4|
hkgPC-
for (i = l; i <= mid; i++) { T , =ga
temp = data; J'O`3!Oy/
} 3i(k6)H$4
for (j = 1; j <= r - mid; j++) { GxZQ{
\
temp[r - j + 1] = data[j + mid]; (?\ZN+V)
} [Pp#l*
int a = temp[l]; l``1^&K
int b = temp[r]; 7IJb$af:;
for (i = l, j = r, k = l; k <= r; k++) { -e(2?Xq9
if (a < b) { YY!(/<VI
data[k] = temp[i++]; |V9%@
Y?
a = temp; qd|*vE
} else { @@|E1'c7
data[k] = temp[j--]; *A\NjXJl~
b = temp[j]; J-PzI FWd
} _R(5?rG,
} rF0zGNH
} @?]-5 ~3;
om_&|9B)
/** IVNNiNN*5
* @param data ['km'5uZ^
* @param l ~POeFZ
* @param i , D1[}Lr=K
*/ 9_>4~!x`
private void insertSort(int[] data, int start, int len) { .;KupQ;*
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qk,cp},2K
} ,Vs:Lle
} hTG
d Uw]
} @&ZTEznbyt
} _TPo=}Z
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堆排序: ~$\j$/A8/
~v54$#CB
package org.rut.util.algorithm.support; zRJy3/>
oM7^h3R
import org.rut.util.algorithm.SortUtil; ONGe/CEXT
17i^|&J6}:
/** *i?qOv/=>
* @author treeroot &\X;t|
* @since 2006-2-2 %|,<\~P
* @version 1.0 xRY5[=97
*/ -.*\J|S@g
public class HeapSort implements SortUtil.Sort{ ^n2w6U0
"G,*Z0V5
/* (non-Javadoc) H);'\]_'x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /*O,T
*/ =5|5j!i=q
public void sort(int[] data) { a,4g`?
MaxHeap h=new MaxHeap(); aBI]' D;
h.init(data); 4By-+C*
for(int i=0;i h.remove(); lhI;K4#
System.arraycopy(h.queue,1,data,0,data.length); sR9F:
} ~+np7
$KKaA{0-
private static class MaxHeap{ >eTlew<5
1wgu%$|d
void init(int[] data){ ~ 9;GD4
this.queue=new int[data.length+1]; (>K$gAQH
for(int i=0;i queue[++size]=data; JJ~?ON.H
fixUp(size); "P{&UwMmh
} 4r. W:}4:
} XJzXxhk2
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private int size=0; 1 ~7_!
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private int[] queue; ZYsFd_
jyGVb no`
public int get() { xB(:d'1|
return queue[1]; ffM(il/2
} @EY}iK~
3I5WDuq
public void remove() { #I?iR3u
SortUtil.swap(queue,1,size--); i-?zwVmn
fixDown(1); QVW6SY
} $P(nh'\
file://fixdown DH
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private void fixDown(int k) { A,{D9-%
int j; \Wc/kY3&
while ((j = k << 1) <= size) { s.sy7%{
if (j < size %26amp;%26amp; queue[j] j++; TyWy5J<
:+
if (queue[k]>queue[j]) file://不用交换 <dL04F
break; #'x?)AS
SortUtil.swap(queue,j,k); AE&n^vdQW
k = j; W6O.E
} *?D2gaCta
} $/TA5h
private void fixUp(int k) { n:'BN([]o
while (k > 1) { d&bc>Vt
int j = k >> 1; g&TCff
if (queue[j]>queue[k]) j#,M@CE
break; 0xUj#)
SortUtil.swap(queue,j,k); (u&yb!`
k = j; j dhml%pAd
} AtlR!IEUb
} ]zU<=b@
?ev G=S4>
} +)JqEwCrq
yl<$yd0Zdu
} htYrv5q=M
M5kHD]b
SortUtil: %`T5a<
s66XdM
package org.rut.util.algorithm; HoE.//b
R%_H\-wo
import org.rut.util.algorithm.support.BubbleSort; eBTedSM?t
import org.rut.util.algorithm.support.HeapSort; Vfm #UvA
import org.rut.util.algorithm.support.ImprovedMergeSort; SE)j}go
import org.rut.util.algorithm.support.ImprovedQuickSort; DUKmwKM"k
import org.rut.util.algorithm.support.InsertSort; %4|}&,%%r
import org.rut.util.algorithm.support.MergeSort; pZ~>l=-
import org.rut.util.algorithm.support.QuickSort; M(zY[O
import org.rut.util.algorithm.support.SelectionSort; _@pf1d$
import org.rut.util.algorithm.support.ShellSort; ~oA9+mT5
Xb@z7X#O!
/** wu!_BCIy
* @author treeroot 8+|V!q
* @since 2006-2-2 uxMy1oy
* @version 1.0 J=SB/8tQ)T
*/ !BQ ELB$0
public class SortUtil { K'5sn|)
public final static int INSERT = 1; ^$+f3Z'
public final static int BUBBLE = 2; [{p?BTs
public final static int SELECTION = 3; @EP{VV
public final static int SHELL = 4; Ky9No"o
public final static int QUICK = 5; ZYR,8 y
public final static int IMPROVED_QUICK = 6; xDA,?i;T
0
public final static int MERGE = 7; {iIg 4PzrU
public final static int IMPROVED_MERGE = 8; aRO_,n9
public final static int HEAP = 9; aU.0dsq
`-K)K<
public static void sort(int[] data) { _h=<_Z
sort(data, IMPROVED_QUICK); h/0-Mrk;e
} XJlDiBs9=Q
private static String[] name={ C+(Gg^ w
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N7$DRG/<b
}; 18p3
v`+n`DT
private static Sort[] impl=new Sort[]{ sx( l
new InsertSort(), ?V5Pt s
new BubbleSort(), ??zABV
new SelectionSort(), AY/-j$5+?
new ShellSort(), OZC/+"\,
new QuickSort(), j^$3vj5E[
new ImprovedQuickSort(), o.A}``
new MergeSort(), <7FP"YU
new ImprovedMergeSort(), +NLQYuN
new HeapSort() Q9eYF-+
}; !skb=B#
cGpN4|*rQ
public static String toString(int algorithm){ ))CXjwLj;
return name[algorithm-1]; X$uz=)
} C;)Xwm>e
@q{:Oc^
public static void sort(int[] data, int algorithm) { _!C)r*0(
impl[algorithm-1].sort(data); =hugnX<9
} B'KXQa-$O
ek(kY6x:
public static interface Sort { 9&XV}I,~?|
public void sort(int[] data); 7SA-OFM
} 7>t$<J
J:~[j
public static void swap(int[] data, int i, int j) { gf3u0' $
int temp = data; hk7(2j7B
data = data[j]; "u Of~e"
data[j] = temp; \~z?PA.$
} wcdW72
} $K6?(x_