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。 "\)j=MI8u+
插入排序: U,~\}$<I
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package org.rut.util.algorithm.support; ; Sq_DP1W
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import org.rut.util.algorithm.SortUtil; nB WVG
/** iE!\)7y
* @author treeroot j"9bt GX
* @since 2006-2-2 yk,o*g
* @version 1.0 f3[gAY
*/ 1c8J yp
public class InsertSort implements SortUtil.Sort{ aI{Ehbf=
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/* (non-Javadoc) LaG./+IP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B#N(PvtE
*/ s(o{SC'tt
public void sort(int[] data) { T'"aStt6
int temp; )xy1DA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =rMT1
} x$tx!%,)/S
} 4#1[i|:M
}
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} LJt#c+]Li
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冒泡排序: YIvJN
AK]{^Hvz
package org.rut.util.algorithm.support; @`^+XP K\
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import org.rut.util.algorithm.SortUtil; y0k*iS
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/** 1JMEniB+9
* @author treeroot Ne!F
p
* @since 2006-2-2 OXd617
* @version 1.0 '/trM %<
*/ FAkjFgUJp
public class BubbleSort implements SortUtil.Sort{ =ZR9zL=h
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/* (non-Javadoc) rJ|Q%utYz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EnnT)qos
*/
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public void sort(int[] data) { :8\!; !
int temp; 9JYrP6I!_
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^x-vOGlR
if(data[j] SortUtil.swap(data,j,j-1); ZG:#r\a
} 5 0uYU[W
} pLjet~2}iJ
} K<TVp;N
} ErIAS6HS'
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} "Ah (EZAR
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选择排序: $fES06%
d$Y3 a^O|
package org.rut.util.algorithm.support; (7/fsfsF
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import org.rut.util.algorithm.SortUtil; ilJeI@
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/** s3@sX_2
* @author treeroot ^wN x5t
* @since 2006-2-2 VtIPw&KHW
* @version 1.0 kzU;24"K
*/ \9k$pC+l
public class SelectionSort implements SortUtil.Sort { {,EOSta
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/* Hbwjs?Vq?]
* (non-Javadoc) e[_W( v
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?g9mDe;k
*/ .I\)1kjX
public void sort(int[] data) { jusP
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int temp; D>"U0*h
for (int i = 0; i < data.length; i++) { cfI5KLG~#
int lowIndex = i; %SORs(4
for (int j = data.length - 1; j > i; j--) { y\0<f `v6
if (data[j] < data[lowIndex]) { u=^0n2ez
lowIndex = j; `s74g0h
} \bAsn89O
} k<W n
SortUtil.swap(data,i,lowIndex); kcT?<r
} R7aS{8nn
} K8E:8`_cx
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} XgY( Vv
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Shell排序:
/;LteBoY
_YF~DU
package org.rut.util.algorithm.support; &We1i&w
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import org.rut.util.algorithm.SortUtil; 9D74/3b*
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/** il^SGH
* @author treeroot : sIZ+3
* @since 2006-2-2 0[6llcuj
* @version 1.0 K@xp!
*/ wqDRFZ1*P
public class ShellSort implements SortUtil.Sort{ E:BEQ:(~L
p'{ `Uvr
/* (non-Javadoc) KLBV(`MS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u:H@]z(x
*/ rXo2MX@u
public void sort(int[] data) { kfb+OE:7
for(int i=data.length/2;i>2;i/=2){ Zrfp4SlZZ
for(int j=0;j insertSort(data,j,i); i gzISYC_
} 2D-ogSIo
} R`=IYnoOA
insertSort(data,0,1); L;.6j*E*
} F=
J)(H-xvV
/** vj0`[X
* @param data ><iE VrpN
* @param j (\FjbY9&
* @param i %z!
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*/ :0ND0A{K:
private void insertSort(int[] data, int start, int inc) { Jl3l\I'
int temp; #V-qS/ q"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RLY Ae
} xMg&>}5
} G1B~?i2$ ?
} <Xw 6m$fr:
q,d]i/T
} _%l+v
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快速排序: [$?S9)Xd
3hR7 ./
package org.rut.util.algorithm.support; ,: w~-
IC[SJVH;
import org.rut.util.algorithm.SortUtil; c}vy9m$B_
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/** ;~z>GJox
* @author treeroot LYh5f#
* @since 2006-2-2 /@FB;`'
* @version 1.0 k_V1x0sZ
*/ `(;d+fof
public class QuickSort implements SortUtil.Sort{ &0f7>.y
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/* (non-Javadoc) I>/`W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ml=1R>#'
*/ BO[Q"g$Kon
public void sort(int[] data) { w,8 M
quickSort(data,0,data.length-1); ^1,]?F^
} i )3Y\u
private void quickSort(int[] data,int i,int j){ xx;'WL,g
int pivotIndex=(i+j)/2; !nVX .m9
file://swap z('93vsO
SortUtil.swap(data,pivotIndex,j); +KFK..
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int k=partition(data,i-1,j,data[j]); yF0,}
SortUtil.swap(data,k,j); 1b3Lan_2
if((k-i)>1) quickSort(data,i,k-1); (/"T=`3t
if((j-k)>1) quickSort(data,k+1,j); 6El%T]^
*B:{g>0
} I4|p;\`fK
/** vA`[#(C
* @param data ]v_xEH}T
* @param i 4vqu(w8
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* @param j Ur&: Rr
* @return =j;o,
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*/ PYz| d
private int partition(int[] data, int l, int r,int pivot) { ?U-p
jjM
do{ I}:>M!w
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vMRKs#&8
SortUtil.swap(data,l,r); {7/6~\'/@
} mz\m^g3
while(l SortUtil.swap(data,l,r); kI[EG<N1k
return l;
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} q6_1`Ew
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} }f-rWe{gs>
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改进后的快速排序: .{ x5(bi0S
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package org.rut.util.algorithm.support; 0]HK(,/h
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import org.rut.util.algorithm.SortUtil; ,MvvW{EY
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/** A1'IK.
* @author treeroot hR`dRbBi%
* @since 2006-2-2 lJYv2EZ
* @version 1.0 ih YfWG|
*/ *v5y]E%aW
public class ImprovedQuickSort implements SortUtil.Sort { F
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private static int MAX_STACK_SIZE=4096; Ys3C'Gc
private static int THRESHOLD=10; 9a4RW}S<
/* (non-Javadoc) gTQ6B,`/8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |ITg-t
*/ !EW]:u
public void sort(int[] data) { ]D]K_`!K
int[] stack=new int[MAX_STACK_SIZE]; g,W#3b6>j
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int top=-1; hs*:!&E
int pivot; Ux<h`
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int pivotIndex,l,r; ){(cRB $
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stack[++top]=0; wGxLs>|
4
stack[++top]=data.length-1; 7yj2we
zld>o3K}
while(top>0){ Bh.'%[',
int j=stack[top--]; [&4y@
int i=stack[top--]; tw(2V$J
%B?5l^W@
pivotIndex=(i+j)/2; z>&D~0
pivot=data[pivotIndex]; d+w<y~\
q
jGWLYI=V2
SortUtil.swap(data,pivotIndex,j); G?g7G,|d
| UaI i^
file://partition VcL
l=i-1; <wA_2S
Y
r=j; Jzj~uz
do{ 2#[Y/p
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~@O4>T+VW
SortUtil.swap(data,l,r); . =5Jpo
} iUKj:q:
while(l SortUtil.swap(data,l,r); YsDl2P
SortUtil.swap(data,l,j); {!S/8o"]
.edZKmC6
if((l-i)>THRESHOLD){ G@'0vYb#
stack[++top]=i; 4~/6d9f
stack[++top]=l-1; -I*A `M
} ][mc^eI0s|
if((j-l)>THRESHOLD){ q8lK6p\:W
stack[++top]=l+1; c%dy$mkqgK
stack[++top]=j; Rju8%FRO
} K|/a]I":
Y^G3<.B
} `iI"rlc
file://new InsertSort().sort(data); Rt|Hma
insertSort(data); "10VN*)J}
} ?uN(" I
/** {Vm36/a
* @param data [:'n+D=T3M
*/ ^&.?kJM
private void insertSort(int[] data) { 5HN<*u%z
int temp; NZuFxJ-`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7y\g~?5N
} EHHxCq?
} (?!0__NN;
} 12a #]E
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} fz3*oJ'
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归并排序: D2p6&HNT
O m
package org.rut.util.algorithm.support; cZ >W8{G
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import org.rut.util.algorithm.SortUtil; zTB9GrU
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/** 0 l@P]_qq`
* @author treeroot "~<~b2Y"5
* @since 2006-2-2 [u80-x<
* @version 1.0 njMy&$6a##
*/ PuaosMn(9
public class MergeSort implements SortUtil.Sort{ J"rwWIxO*
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/* (non-Javadoc) RH Vv}N0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L@r.R_*H?s
*/ VWy:U#;+8
public void sort(int[] data) { ]F;]<_
int[] temp=new int[data.length]; l|A8AuO*?
mergeSort(data,temp,0,data.length-1); Pfx71*u,
} _KVB~loT
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private void mergeSort(int[] data,int[] temp,int l,int r){ G3+a+=e
int mid=(l+r)/2; N RSse"
if(l==r) return ; "v!HKnDT
mergeSort(data,temp,l,mid); X&.$/xaT
mergeSort(data,temp,mid+1,r); ukf\*
for(int i=l;i<=r;i++){ 2bnIT>(
temp=data; lO> 7`2x=F
} 5,BkwAr+6[
int i1=l; #.+*G`m
int i2=mid+1; #0^3Wm`X;
for(int cur=l;cur<=r;cur++){ L"7`
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if(i1==mid+1) sFCs_u1tNN
data[cur]=temp[i2++]; -#;VFSz,9*
else if(i2>r) *9Js:z7I
data[cur]=temp[i1++]; BC{J3<0bf@
else if(temp[i1] data[cur]=temp[i1++]; "Vp:z V<S
else YCBML!L
data[cur]=temp[i2++]; u6I0<i_KZ
} X1[R*a/p
} e=;@L3f
G!LNP&~
} x ETVtq
I+?$4SC
改进后的归并排序: n;^k
-sH.yAvC6
package org.rut.util.algorithm.support; mRnzP[7-\)
bA^:p3
import org.rut.util.algorithm.SortUtil; TgE.=` "7
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/** wQrPS
* @author treeroot Y1_6\zpA
* @since 2006-2-2 bc=u1=~w
* @version 1.0 C\2 >7
*/ UH,4b`b
public class ImprovedMergeSort implements SortUtil.Sort { *o\Y~U-so
MN M>
private static final int THRESHOLD = 10; JS7}K)A2B6
lyH X#]
/* fRa-bqQ
* (non-Javadoc) grfdvN
* q{Ta?|x#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
;/^]|
*/ t"bPKFRy9E
public void sort(int[] data) { !_z<W~t"
int[] temp=new int[data.length]; (VXx G/E3
mergeSort(data,temp,0,data.length-1); {L-aXe{
} s?;<F
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private void mergeSort(int[] data, int[] temp, int l, int r) { 07LL)v~
int i, j, k; iI@Gyq=
int mid = (l + r) / 2; vz#wP
if (l == r) 0O['-x
return; Yx}"> ;\
if ((mid - l) >= THRESHOLD) gQpD]p%k
mergeSort(data, temp, l, mid); SL\y\GaV
else EO9kE.g
insertSort(data, l, mid - l + 1); X?v^>mA
if ((r - mid) > THRESHOLD) p`<e~[]a
mergeSort(data, temp, mid + 1, r); WP@JrnxO\`
else j
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insertSort(data, mid + 1, r - mid); &b@!DAwAJ
pW3)Y5/D
for (i = l; i <= mid; i++) { \l=KWa 3Q
temp = data; Puth8$
} jQ_|z@OV
for (j = 1; j <= r - mid; j++) { %X9:R'~ sP
temp[r - j + 1] = data[j + mid]; ahi57r[
} RqN_vk\
int a = temp[l]; X.T\=dm%v
int b = temp[r]; &t*8oNwSs
for (i = l, j = r, k = l; k <= r; k++) { TA@tRGP>
if (a < b) { 8F`BJ6='
data[k] = temp[i++]; O2'bNR
a = temp; L%o6 5
} else { ]2xx+P#Y
data[k] = temp[j--]; LE0J ;|1
b = temp[j]; 1hMX(N&|
} mSw?2ba
} SP
D207
} _8NEwwhc
Oj4u!SY\j
/** ?LV-W
* @param data :uIi
?
* @param l b5n]Gp
* @param i I4o=6ts
*/ I", &%0ycm
private void insertSort(int[] data, int start, int len) { M8#*zCp{5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Hlt8al3
} rt 3f7 s*
} \&\_>X.,
} Ha=_u+@
} D 8@nkSP
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堆排序: #LN5&i;s
x!"SD3r=4>
package org.rut.util.algorithm.support; O:5Rp_?^
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import org.rut.util.algorithm.SortUtil; JGk3b=K
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/** m?D
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* @author treeroot #hD}S~
* @since 2006-2-2 M1/M}~
* @version 1.0 n)
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*/ d}{LM!s
public class HeapSort implements SortUtil.Sort{ E-yT
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/* (non-Javadoc) e-CNQnO~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Snc;p
*/ }J ei$0x
public void sort(int[] data) { W>5vRwx00
MaxHeap h=new MaxHeap(); P"(z jG9-
h.init(data); "3{#d9Gs
for(int i=0;i h.remove(); H&w:`JYDL3
System.arraycopy(h.queue,1,data,0,data.length); h4hN1<ky\
} uipq=Yp.
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private static class MaxHeap{ ./'~];&
di6B!YQP
void init(int[] data){ G(U 9rJ9
this.queue=new int[data.length+1]; EMVk:Vt]
for(int i=0;i queue[++size]=data; ?QCmSK=L
fixUp(size); \~JNQ&_o
} o&(wg(Rv
} T>}0) s
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private int size=0; y[:
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~I{EE[F>qL
private int[] queue; c |>=S)|
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public int get() { /b{o3, #.M
return queue[1]; ]dvPx^`d{
} >_XOc
!Y (apVQ
public void remove() { KAd_zkUA
SortUtil.swap(queue,1,size--); >^a$
fixDown(1); t)YUPDQ@J
} )uZoH8?
file://fixdown bS>R5*Zp
private void fixDown(int k) { Z&_y0W=t
int j; H&M1>JtE
while ((j = k << 1) <= size) { 9YB2e84j
if (j < size %26amp;%26amp; queue[j] j++; l , ..5
if (queue[k]>queue[j]) file://不用交换 .%q$d d>>
break; '"y}#h__T
SortUtil.swap(queue,j,k); 5sCFzo<=vh
k = j; XAe\s`
} m6^ 5S
} 2d*_Qq1
private void fixUp(int k) { "e 1wr
while (k > 1) { LheFQ A
int j = k >> 1; B`fH^N
if (queue[j]>queue[k]) !xu9+{-
break; GcT;e5D
SortUtil.swap(queue,j,k); ;j{7!GeKa
k = j; B
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} C5|db{=\.*
} yub{8 f;v
s=Df `
} )0^># k
d+;gw*_Ei
} =!BobC- [b
\q "N/$5{f
SortUtil: ~:4~2d|
UUeB;'E+
package org.rut.util.algorithm; !^e =P%S
U&UKUACn"
import org.rut.util.algorithm.support.BubbleSort; !SO8O
import org.rut.util.algorithm.support.HeapSort; U3E&n1AA
import org.rut.util.algorithm.support.ImprovedMergeSort; dH\XO-Z7v
import org.rut.util.algorithm.support.ImprovedQuickSort; 7{e=="#*
import org.rut.util.algorithm.support.InsertSort; lT'9u,6
import org.rut.util.algorithm.support.MergeSort; 5+- I5HX|~
import org.rut.util.algorithm.support.QuickSort; \ECu5L4
import org.rut.util.algorithm.support.SelectionSort; KVkMU?6
import org.rut.util.algorithm.support.ShellSort; ecj7BT[mLI
pu+ur=5&
/** H6K`\8/SeN
* @author treeroot c0_E_~
* @since 2006-2-2 O/Rhf[7v*
* @version 1.0 vi!YN|}\
*/ @%hCAm
public class SortUtil { AQss4[\Dx
public final static int INSERT = 1; C3XmK}h
public final static int BUBBLE = 2; +/rH(Ni
public final static int SELECTION = 3; >Kivuc
public final static int SHELL = 4; k`\R+WK$
public final static int QUICK = 5; \(
)#e
public final static int IMPROVED_QUICK = 6; 4-R^/A0
public final static int MERGE = 7; HN6}R|IH
public final static int IMPROVED_MERGE = 8; g5Z#xszj+
public final static int HEAP = 9; +9XQ[57
t*G/]
public static void sort(int[] data) { WC,+Cn e
sort(data, IMPROVED_QUICK); 2HD]?:Fk7
} 17|np2~
private static String[] name={ 9Q;c,]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l"(6]Z 4
}; LD>\#q8a*
h3*
x[W
private static Sort[] impl=new Sort[]{ C&~1M}I
new InsertSort(), e>}}:Ud
new BubbleSort(), a4MZ;5
new SelectionSort(), ORN6vX(1
new ShellSort(), 1f'Hif*r_X
new QuickSort(), Wg`AZ=t
new ImprovedQuickSort(), I$t3qd{H&
new MergeSort(), _>m-AI4^
new ImprovedMergeSort(), 44ed79ly0)
new HeapSort() q.#[TI ^
}; px;/8c-
en F :>H4
public static String toString(int algorithm){ (1R?s>3o
return name[algorithm-1]; L!Cz'm"Nl
} !v.9"!' N
#R0A= !
public static void sort(int[] data, int algorithm) { ?, r~=
impl[algorithm-1].sort(data); X-LA}YH=tS
} 8.J(r(;>
;%C'FV e]
public static interface Sort { v``-F(i$
public void sort(int[] data); )E#2J$TD
} =sJ
_yq0#R
[,RI-#n
public static void swap(int[] data, int i, int j) { 3REx45M2
int temp = data; j@gMbiu
data = data[j]; #]?bLm<!
data[j] = temp; b2,mCfLsv
} iIT8H\e
} ^ KK_qC