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。 38'H-]8q"
插入排序: *DNH_8m
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package org.rut.util.algorithm.support; =Fj:#s
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import org.rut.util.algorithm.SortUtil; _l8oB)
/** H~V=TEj
* @author treeroot !Aw.f!
* @since 2006-2-2 aO<d`DTyJ
* @version 1.0 nAts.pVy"
*/ V|a59[y?
public class InsertSort implements SortUtil.Sort{ 9h0|^ttF
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/* (non-Javadoc) T3?kabbF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;QEGr|(
*/ -5>g 0o2
public void sort(int[] data) { ` j Un
int temp; >LLz G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q o=
} 7L<oWAq
} @~N#)L^
} P2s0H+<
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} *M`[YG19!e
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冒泡排序: 5cE[s<=
6w]]KA
package org.rut.util.algorithm.support; /?6y2 t
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import org.rut.util.algorithm.SortUtil; V&}Z# 9Dx
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/**
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* @author treeroot 5
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* @since 2006-2-2 9a4RW}S<
* @version 1.0 ;zJ_apZ:{
*/ %vThbP#mR|
public class BubbleSort implements SortUtil.Sort{ ix/uV)]k`
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0aI
/* (non-Javadoc) oNh .Zgg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &WRoNc
*/ .-34g5
public void sort(int[] data) { ?<}qx`+%Q
int temp; .ZJh-cd
for(int i=0;i for(int j=data.length-1;j>i;j--){ e| l?NXRX
if(data[j] SortUtil.swap(data,j,j-1); 2'}2r ~6
} =VSieh
} s3knh&'zb
} i*; V4zh
} dJ;;l7":~
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} gSv<.fD"
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选择排序: 23fAc"@ B
SwL\=nq+~
package org.rut.util.algorithm.support; EXi+pm
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import org.rut.util.algorithm.SortUtil; Bh.'%[',
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/** U!`'Qw;
* @author treeroot *K 7L5.
* @since 2006-2-2 (l^lS=x
* @version 1.0 :Oj+Tc9A
*/ <;T7qEIlo
public class SelectionSort implements SortUtil.Sort { @kK=|(OB'
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/* D|BN_ai9
* (non-Javadoc) />oU}m"k
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IpP0|:}
*/ d^Wh-U
public void sort(int[] data) { m6gr!aT
int temp; (Zn\S*_@/
for (int i = 0; i < data.length; i++) { S`^W#,rj
int lowIndex = i; 9c 6V&b
for (int j = data.length - 1; j > i; j--) { e8# 3Y+Tc
if (data[j] < data[lowIndex]) { \r2qH0B
lowIndex = j; 2u:j6ic
} &ar}6eO
} .`p_vS9
SortUtil.swap(data,i,lowIndex); -,tYfQ;:
} ]aR4U`
} `sXx,sV?B
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} {+EPE2X=C
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Shell排序: u rOG Oa$
.G]# _U
package org.rut.util.algorithm.support; gdT_kb5HL8
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import org.rut.util.algorithm.SortUtil; ^/uGcz|.
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/** tvUvd(8w
* @author treeroot }X?*o`sW
* @since 2006-2-2 nXS%>1o,
* @version 1.0 525 >=h
*/ pSP_cYa#(#
public class ShellSort implements SortUtil.Sort{ KWUz]>Z
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/* (non-Javadoc) *X #e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^m=%Ctu#
*/ >KPJ74R
public void sort(int[] data) { ]4yvTP3[Rm
for(int i=data.length/2;i>2;i/=2){ O+$70
for(int j=0;j insertSort(data,j,i); MocH>^,
} &1{k^>oz
} m [g}vwS
insertSort(data,0,1); dNobvK
} Y<+4>Eh
yd~fC:_ ]
/** H^g<`XEgw
* @param data C] w< &o
* @param j 6~S0t1/t?
* @param i U!5*V9T~J
*/ (n/1:'
private void insertSort(int[] data, int start, int inc) { OKVYpf
int temp; <&2,G5XA
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =1VH5pVr}
} gT
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} lo: ~~l
} ^IH1@
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} [//f BO
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快速排序: MDPM OA
OpLSjr
package org.rut.util.algorithm.support; <^Tj}5)n
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import org.rut.util.algorithm.SortUtil; ;%<4U^2
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/** @45 H8|:k
* @author treeroot Ji[g@#
* @since 2006-2-2 g-FZel
* @version 1.0 T6$<o\g'
*/ cloI 6%5r
public class QuickSort implements SortUtil.Sort{ ~PnpYd<2
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/* (non-Javadoc) uN
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Z yPK,("
*/ %
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public void sort(int[] data) { 29^bMau)v
quickSort(data,0,data.length-1); S(i(1Hs.
} b<AE}UK
private void quickSort(int[] data,int i,int j){ Ba0D"2CgY
int pivotIndex=(i+j)/2; h\d($Ki
file://swap PEEY;x
SortUtil.swap(data,pivotIndex,j); 4d
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int k=partition(data,i-1,j,data[j]); vs|6ww
SortUtil.swap(data,k,j); _KVB~loT
if((k-i)>1) quickSort(data,i,k-1); :, [!8QP
if((j-k)>1) quickSort(data,k+1,j); #ya|{K
->I{
:#
} I%919
/** HDyZzjgG
* @param data \STvBI?
* @param i Qu FCc1Q
* @param j vXyo
* @return f+Me dc~
*/ ukf\*
private int partition(int[] data, int l, int r,int pivot) { ]a#]3(o]}
do{ tq[",&K
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~@ b}=+n
SortUtil.swap(data,l,r); \C#b@xLnX
} ddDJXk)!0
while(l SortUtil.swap(data,l,r); Y&f[2+?2NK
return l; Wmxw!
} $S8bp3)
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} Q 02??W
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改进后的快速排序: [KI`e
/%9p9$kFot
package org.rut.util.algorithm.support; OW}j4-~wL
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import org.rut.util.algorithm.SortUtil; ;n{j,HB
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/** 8/?uU]#Q
* @author treeroot l=~99mE
* @since 2006-2-2 }|"*"kxi!
* @version 1.0 `OReSg
2
*/ b[o"Uq@8?
public class ImprovedQuickSort implements SortUtil.Sort { 50bP&dj&
Qfu*F}
private static int MAX_STACK_SIZE=4096; 2G5!u)
private static int THRESHOLD=10; <VR&=YJ
/* (non-Javadoc) G!LNP&~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dzNaow*0&V
*/ PB<Sc>{U
public void sort(int[] data) { ^%$W S,
int[] stack=new int[MAX_STACK_SIZE]; soQzIx
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int top=-1; IOZ|85u=
int pivot; O\F^@;]F6
int pivotIndex,l,r; 0*IY%=i
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stack[++top]=0; i^ cM@?
stack[++top]=data.length-1; i-s?"Fk
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while(top>0){ 'A(-MTd%
int j=stack[top--]; \
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int i=stack[top--]; rn[}{1I33Q
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pivotIndex=(i+j)/2; }:l%,DBw
pivot=data[pivotIndex]; oy2dA
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SortUtil.swap(data,pivotIndex,j); 4f[M$xU&h
m *bKy;'8
file://partition xKLcd+hCZ
l=i-1; qMdtJ(gq
r=j; xVz -_z
do{ u:H 3.5)%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zV(tvt
SortUtil.swap(data,l,r); i~Ob( YIH
} [(P[qEY
while(l SortUtil.swap(data,l,r); <\9Ijuq}k
SortUtil.swap(data,l,j); \
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9 c5G6n0
if((l-i)>THRESHOLD){ 2\CkX
stack[++top]=i; q{Ta?|x#
stack[++top]=l-1; :f
!=_^}
} @uM3iO7&
if((j-l)>THRESHOLD){ (T#(A4:6S
stack[++top]=l+1; vl{_M*w
;
stack[++top]=j; ;0Ct\ [eh
} OG?j6qhpl
(VXx G/E3
} ];{l$-$$
file://new InsertSort().sort(data); e5>5/l]jsg
insertSort(data); v6DxxE2n
} U>B5LU9&
/** k5%0wHpk =
* @param data MV;Y?%>
*/ UFIAgNKl
private void insertSort(int[] data) { D7_Hu'y<o
int temp; Jn@Mbl
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cM<hG:4%wX
} 5)n:<U*
} W
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} vz#wP
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} 0O['-x
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归并排序: T.w}6?2
$L&9x3+?Kg
package org.rut.util.algorithm.support; $7gB&T.x
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import org.rut.util.algorithm.SortUtil; ;]oXEq`
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/** 7MuK/q.
* @author treeroot kSDa\l!W]
* @since 2006-2-2 hKzBq*cV
* @version 1.0 *CPB5s
*/ xlPcg7
public class MergeSort implements SortUtil.Sort{ oA3W
{
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/* (non-Javadoc) %L \{kUam
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lgjoF_D
*/ o S:vTr+$
public void sort(int[] data) { b6WC@j`*T
int[] temp=new int[data.length]; 6|9g4@Hy
mergeSort(data,temp,0,data.length-1); ?<yq 2`\4O
} &DbGyV8d"|
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private void mergeSort(int[] data,int[] temp,int l,int r){ $kD`$L@U
int mid=(l+r)/2; djy:
if(l==r) return ; leb^,1/D6
mergeSort(data,temp,l,mid); zmL~]!~&
mergeSort(data,temp,mid+1,r); fBWJ%W
for(int i=l;i<=r;i++){ 5Du>-.r
temp=data; K7[AiU_I
} y5AXL5
int i1=l; +%le/Pg@
int i2=mid+1; &t*8oNwSs
for(int cur=l;cur<=r;cur++){ TH(Lzrbg
if(i1==mid+1) Z*vpQBbu
data[cur]=temp[i2++]; +Sd x8 Z5
else if(i2>r) |<$<L`xoe
data[cur]=temp[i1++]; O2'bNR
else if(temp[i1] data[cur]=temp[i1++]; k}f<'g<H
else VNxpOoV=S
data[cur]=temp[i2++]; A"bSNHCKF
} ]2xx+P#Y
} hV>4D&<
@cS1w'=
} k qY3r &
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改进后的归并排序: z"s%#/#
AK~`pq[.
package org.rut.util.algorithm.support; SP
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import org.rut.util.algorithm.SortUtil; .cH{WZ
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/** Oj4u!SY\j
* @author treeroot Dc&9emKI
* @since 2006-2-2 _r<zSH%
* @version 1.0 _,Rsl$Tk'
*/ rKy-u
public class ImprovedMergeSort implements SortUtil.Sort { V$-~%7@>;9
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private static final int THRESHOLD = 10; I4o=6ts
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/* N)vk0IM!
* (non-Javadoc) }o!#_N0T
* Xew1LPI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * Y%<b86U
*/ XYK1-m}2
public void sort(int[] data) { rt 3f7 s*
int[] temp=new int[data.length]; f- k|w%R@
mergeSort(data,temp,0,data.length-1); { /F rs*AF
} #4P3xa
?2?S[\@`0U
private void mergeSort(int[] data, int[] temp, int l, int r) { T<TcV9vM
int i, j, k; H4}%;m%
int mid = (l + r) / 2; O ':0V
if (l == r) uXG`6|?
return; 9k=U0]!ch
if ((mid - l) >= THRESHOLD) n2xLgK=
mergeSort(data, temp, l, mid); &*G5J7%w
else |b$>68:
insertSort(data, l, mid - l + 1); tp6csS,
if ((r - mid) > THRESHOLD) Z{,GZT
mergeSort(data, temp, mid + 1, r); S1 EEASr!}
else n)
_dH/"
insertSort(data, mid + 1, r - mid); tb:,Uf>E
)h>\05|T
for (i = l; i <= mid; i++) { (B_7\}v|_
temp = data; u0bfX,e2U
} &dhcKO<4
for (j = 1; j <= r - mid; j++) { :jt;EzCLg%
temp[r - j + 1] = data[j + mid]; 93W
} T~i%j@Q.6
int a = temp[l]; KA 5~">l
int b = temp[r]; :]CzN^k(1c
for (i = l, j = r, k = l; k <= r; k++) { [%j?.N
if (a < b) { >63)z I
data[k] = temp[i++]; <*s"e)XeqF
a = temp; Q0zW ]a
} else { z-EwXE
data[k] = temp[j--]; B ~fSMB6h
b = temp[j]; csH2_+uG
} ?muDTD%c
} di6B!YQP
} Awu$g.
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/** {]wIM^$6+
* @param data ~7dM!g{W
* @param l G'ij?^?
* @param i R)0N0gH
*/ \~JNQ&_o
private void insertSort(int[] data, int start, int len) { +h0PR?
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s kN9O"^A
} :ozV3`%$(
} Q~Ay8L+
} "$XYIuT
} 2v0!` &?M{
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堆排序: ^4c,U9J=
0U$:>bQ
package org.rut.util.algorithm.support; e^j<jV`1
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import org.rut.util.algorithm.SortUtil; bGbqfO`
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/** Fi mN?s
* @author treeroot nz4<pvC,*
* @since 2006-2-2 *IC^IC:
* @version 1.0 A_!QrM
*/ O0^?f/&k
public class HeapSort implements SortUtil.Sort{ `/#f?Hk=
WfTD7?\dw
/* (non-Javadoc) 10p8|9rE}B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yn SBVb!)
*/ )uZoH8?
public void sort(int[] data) { #
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x
MaxHeap h=new MaxHeap(); `E@kFJ(<On
h.init(data); =M7TCE
for(int i=0;i h.remove(); EXuLSzQwv
System.arraycopy(h.queue,1,data,0,data.length); MkwU<ae AB
} D^Te%qnW
w/ TKRCO3
private static class MaxHeap{ LO)GTyzvJ
{Fbg]'FQ
void init(int[] data){ ]eE 1n2
this.queue=new int[data.length+1]; ]kx-,M(
for(int i=0;i queue[++size]=data; ?hnx/z+uT
fixUp(size); 3gAR4
} xq}-m!nX
} $9K(F~/
pz{'1\_+9
private int size=0; )zU:
]*qU+&
private int[] queue; axmsrjW#
7paUpQit
public int get() { $.pTB(tO
return queue[1]; NmJ`?-Z
} OTj,O77k
I,b9t\(6
public void remove() { ?v:ZU~i
SortUtil.swap(queue,1,size--); IV'p~t
fixDown(1); c!It^*
} YTK^ijmU6x
file://fixdown qj&bo
private void fixDown(int k) { .20V
3
int j; &)n_]R#)
while ((j = k << 1) <= size) { \R(R9cry
if (j < size %26amp;%26amp; queue[j] j++; w/W7N
if (queue[k]>queue[j]) file://不用交换 8nCp\0
break; )0^># k
SortUtil.swap(queue,j,k); i31<].|kA*
k = j; `H>b5
} gxwo4.,
} ,M QVE
private void fixUp(int k) { Oe51PEqn
while (k > 1) { RT^v:paNT2
int j = k >> 1; 9Hd;353Q
if (queue[j]>queue[k]) !;S"&mcPDJ
break;
.[?BlIlm
SortUtil.swap(queue,j,k); R_^/,^1
k = j; qz!Ph5(
} ]dSK
wxk
} p~&BChBl!=
SR ZL\m}
} 5u r)uz]w8
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} }g|nz8
XM/vDdR
SortUtil: Tkw;pb
LH2PTW\b!6
package org.rut.util.algorithm; }u%"$[I}
sYqgXE.
import org.rut.util.algorithm.support.BubbleSort; y500Xs[c
import org.rut.util.algorithm.support.HeapSort; i0:>Nk
import org.rut.util.algorithm.support.ImprovedMergeSort; :]PM_V|
import org.rut.util.algorithm.support.ImprovedQuickSort; Dw_D+7>(v
import org.rut.util.algorithm.support.InsertSort; +f>c xA
import org.rut.util.algorithm.support.MergeSort; ]5'
d&f
import org.rut.util.algorithm.support.QuickSort; ye%iDdf
import org.rut.util.algorithm.support.SelectionSort; _OMpIdY,R*
import org.rut.util.algorithm.support.ShellSort; TW7:q83{l
Z
o=]dBp.
/** 1D F/6y
* @author treeroot >xqM5#m`E$
* @since 2006-2-2 (gwj)?:
* @version 1.0 "0CjP+1k
*/ V5mlJml2(
public class SortUtil { e$e#NoN
public final static int INSERT = 1; ";x+1R.d
public final static int BUBBLE = 2; tnz+bX26
public final static int SELECTION = 3; Ub_4yN;
public final static int SHELL = 4; e)H!uR
public final static int QUICK = 5; -)jax
public final static int IMPROVED_QUICK = 6; c>HK9z{
public final static int MERGE = 7; \,&9
public final static int IMPROVED_MERGE = 8; Pf<[|yu4?
public final static int HEAP = 9; oH#v6{y
Pm+tQ
public static void sort(int[] data) { kM/Te{<
sort(data, IMPROVED_QUICK); EpYy3^5d
} 3QXjD/h
private static String[] name={ [q*%U4qGO
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JWv{=_2w
}; 6/Fzco#N
R"AUSO|{
private static Sort[] impl=new Sort[]{ 52d^K0STC
new InsertSort(), C[uOReo
new BubbleSort(), ka"337H
new SelectionSort(), ~rD={&0
new ShellSort(), 8X$LC
new QuickSort(), k|YWOy@D~
new ImprovedQuickSort(), yClx` S(
new MergeSort(), 9Q;c,]
new ImprovedMergeSort(), .]x2K-Sf
new HeapSort()
d$W
}; -%CoWcGP
;eL9{eF
public static String toString(int algorithm){ )IL
#>2n?
return name[algorithm-1]; EW<kI+0D
} ObG|o1b
A"v{~
public static void sort(int[] data, int algorithm) { Q=uR Kh
impl[algorithm-1].sort(data); /9pM>Cd*Z
} ln!'_\{
I$t3qd{H&
public static interface Sort { _>m-AI4^
public void sort(int[] data); 44ed79ly0)
} 5O/i3m26
I1Sa^7
public static void swap(int[] data, int i, int j) { %+)o'nf"U
int temp = data; @}-r&/#
data = data[j]; ->^~KVh&
data[j] = temp; N|g;W
} )~J>X{hy
} kq=V4-a[