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。 *)g*5kKN
插入排序: d<fS52~l
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package org.rut.util.algorithm.support; +1F@vag7
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import org.rut.util.algorithm.SortUtil; oa1&9
/** l&U3jeW-o
* @author treeroot 29x
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* @since 2006-2-2 CA[k$Sw*
* @version 1.0 !(l,+@j
*/ ojtc Kw
public class InsertSort implements SortUtil.Sort{ P@
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/* (non-Javadoc) Ay"x<JB{U2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;MNEe%
TJ
*/ A7~)h}~
public void sort(int[] data) { D[:7B:i
int temp; A3!NEFBK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;,@3bu>r
} Ba!`x<wa
} B~yD4^
} ]wdudvS@6r
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} *!'00fv
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冒泡排序: !Z<Z"R/
sfa T`q
package org.rut.util.algorithm.support; ~O|j*T
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import org.rut.util.algorithm.SortUtil; -D38>#Y
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/** -V_e=Y<J/
* @author treeroot >L[,.}(9
* @since 2006-2-2 e>sr)M
* @version 1.0 Ho\K
%#u
*/ DCP"
public class BubbleSort implements SortUtil.Sort{ (J$JIPF
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8 r
/* (non-Javadoc) '00DUUa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ax'Dp{Q
*/ kZPj{^c:
public void sort(int[] data) { :,]%W $f=
int temp; i&Xr+Zsec"
for(int i=0;i for(int j=data.length-1;j>i;j--){ - uliND
if(data[j] SortUtil.swap(data,j,j-1); )1lYfJ
} 0`,a@Q4
} pr@8PD2%
} ''v_8sv
} gaTI:SKzc
78y4nRQ*
} \A keC 6[D
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选择排序: vE6/B"b
Vu;tU.
package org.rut.util.algorithm.support; ~)sb\o
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import org.rut.util.algorithm.SortUtil; C0KP,JS&
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/** O:p~L`o>>
* @author treeroot AkT_ZU>
* @since 2006-2-2 cg$7`/U
* @version 1.0 #H M0s~^w&
*/ ]5rEwPB
public class SelectionSort implements SortUtil.Sort { DV{Qbe#In
EC?!%iO`
/* sL+/Eeb` c
* (non-Javadoc) %w'@:~0
* ?%*Zgk!l7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +!.=M8[
*/ {#Mz4s`M
public void sort(int[] data) { 5x4(5c5^
int temp; @qg=lt|(F
for (int i = 0; i < data.length; i++) { 1fEV^5I
int lowIndex = i; @i6D&e=
for (int j = data.length - 1; j > i; j--) { .CwMxuW
if (data[j] < data[lowIndex]) { Ms^,]Q1{
lowIndex = j; 3u+~!yz
} E83{4A4
} 1=W>zC
SortUtil.swap(data,i,lowIndex); RHVMlMX
} W#-M|
} F-UY~i8
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} Wa,[#H
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Shell排序: mw?,oiT,)
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package org.rut.util.algorithm.support; o5. q
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import org.rut.util.algorithm.SortUtil; 0o(/%31]
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/** oy/#,R_n%
* @author treeroot z4_>6sf{
* @since 2006-2-2 j.AAY?L
* @version 1.0 <7?MutHM-
*/ YX@[z
5*
public class ShellSort implements SortUtil.Sort{
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/* (non-Javadoc) Q4_j`q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wArNWBM
*/ `4(k ?Pk2
public void sort(int[] data) { pbloL3d.;+
for(int i=data.length/2;i>2;i/=2){ 0'VwObq
for(int j=0;j insertSort(data,j,i); {@B<$g
} 3mr9}P9;
} >(~;V;
insertSort(data,0,1); `')3}
} ? 0nbvV5v7
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/** /':kJOk<[
* @param data A5Y z|
* @param j :;)K>g,b
* @param i f>l}y->-Ug
*/ ,58D=EgFy
private void insertSort(int[] data, int start, int inc) { k((_~<$2K
int temp; v:s~Y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [ V/*{Z
} b.;F)(
} ks
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} mi<V(M~p
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} V
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快速排序: TJ2$
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package org.rut.util.algorithm.support; lN{-}f;TN
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import org.rut.util.algorithm.SortUtil; <|s|6C
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/** ^e^M
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* @author treeroot A$[@AY$MI
* @since 2006-2-2 h]vA%VuE'E
* @version 1.0 DHgEhf]
*/ w*\)]bTs
public class QuickSort implements SortUtil.Sort{ m7g; psg
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/* (non-Javadoc) U]d{hY."
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lUUeM\
*/ MXSPD#gN
public void sort(int[] data) { 7 45Uo'
quickSort(data,0,data.length-1); L%U-MOS=
} zF3fpEKe
private void quickSort(int[] data,int i,int j){ *siS4RX2
int pivotIndex=(i+j)/2; r;I3N+
file://swap s?7g3H5#0k
SortUtil.swap(data,pivotIndex,j); IbF[nQ
5e6]v2 k
int k=partition(data,i-1,j,data[j]); QV4{=1A
SortUtil.swap(data,k,j); \ C~Y
if((k-i)>1) quickSort(data,i,k-1); shjS^CP
if((j-k)>1) quickSort(data,k+1,j); YeptYW@xfw
_;L9&>!p6
} i|)<#Ywl
/** 9ZeTS~i
* @param data ~X*)gS-=
* @param i '8}*erAg
* @param j ja#E}`wC4
* @return : H0+} =
*/ 3?.3Z!H/
private int partition(int[] data, int l, int r,int pivot) { E+]gC
do{ `N]!-=o
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iRBUX`0
SortUtil.swap(data,l,r); ^CDQ75tR
}
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while(l SortUtil.swap(data,l,r); Gt2NUGU
return l; m}'kxZTOm
} CAX|[
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} E,>/6AU
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改进后的快速排序: VSL6tQp
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; Z)~.OqRw]
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/** sFT-aLpL@V
* @author treeroot
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* @since 2006-2-2 r**u=q%p
* @version 1.0 \|L ~#{a
*/ vxzh|uF
public class ImprovedQuickSort implements SortUtil.Sort { pGc_Klq
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private static int MAX_STACK_SIZE=4096; >RG
}u
private static int THRESHOLD=10; ?;ZTJ
/* (non-Javadoc) z
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2$V]XSe
*/ ^dJ/>?1
public void sort(int[] data) { yCwBZ/C
int[] stack=new int[MAX_STACK_SIZE]; Nv{r`J.
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int top=-1; Q"h/o"-h
int pivot; 2,{m>fF
int pivotIndex,l,r; E=_M=5]
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stack[++top]=0; b*+Od8r
stack[++top]=data.length-1; /U4F\pZl
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while(top>0){ K@)Hm\*
int j=stack[top--]; EC<g7_0F
int i=stack[top--]; Gg]>S#^3
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pivotIndex=(i+j)/2; .z^ePZ|mV
pivot=data[pivotIndex]; dq+VW}[EO
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SortUtil.swap(data,pivotIndex,j); F4xYfbwY"]
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file://partition w+)MrB-}
l=i-1; <5%x3e"7u
r=j; jQxv`H
do{ #2<.0@@
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $b,o3eC
SortUtil.swap(data,l,r); dMK|l
} l}:&}
while(l SortUtil.swap(data,l,r); TRW{`b[
SortUtil.swap(data,l,j); oKLL~X>!U
}1=V`N(
if((l-i)>THRESHOLD){ u [5*RTE
stack[++top]=i; TcPYDAa
stack[++top]=l-1; Q*u4q-DE
} )kfj+/
if((j-l)>THRESHOLD){ Km7HB!=<
stack[++top]=l+1; 1:h{(
%`&
stack[++top]=j; kTZ`RW&0
} ]a F,r"
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} T PEg>[
file://new InsertSort().sort(data); }pxMO? h$
insertSort(data); u/-ul
} b+bgGLo
/** 2+y<&[A8U
* @param data ];P$w.0
*/ =+HMPV6yg7
private void insertSort(int[] data) { A Ch!D>C1
int temp; q$6fb)2I]e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sOQF_X(.x
} r%QTUuRXC3
} In<L?U?([D
} sH(@X<{p
=|_:H$94
} -T3 z@k
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归并排序: yE1M+x./
5$9g4
package org.rut.util.algorithm.support; ye!}hm=w
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import org.rut.util.algorithm.SortUtil; `}<x"f7.z
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/** Z7>pz:,
* @author treeroot E_k<EQ%r
* @since 2006-2-2 LE#ko2#ke
* @version 1.0 #D4gNQg@R
*/ {6d)|';%
public class MergeSort implements SortUtil.Sort{ vcm66J.14
8s^CE[TA
/* (non-Javadoc) pD;'uEFBQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AT*J '37
*/ 3Run.Gv\
public void sort(int[] data) { V/xGk9L~
int[] temp=new int[data.length]; 8ExEhBX8
mergeSort(data,temp,0,data.length-1); )%H@.;cD_r
} @)n xX))a
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private void mergeSort(int[] data,int[] temp,int l,int r){ Xo^P=uf%
int mid=(l+r)/2;
@Tk5<B3
if(l==r) return ; <=D!/7$O
mergeSort(data,temp,l,mid); ixc~DV+@[
mergeSort(data,temp,mid+1,r); G- nS0Kn:
for(int i=l;i<=r;i++){ R
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temp=data; bn$a7\X-
} ffDh0mDN
int i1=l; E$!0h_.(
int i2=mid+1; nM]Sb|1:
for(int cur=l;cur<=r;cur++){ -!w({rP
if(i1==mid+1) YB?yi( "yL
data[cur]=temp[i2++];
J" :R,w`
else if(i2>r) v',%
data[cur]=temp[i1++]; R<wPO-dX
else if(temp[i1] data[cur]=temp[i1++]; Ed6k7
else e\o>(is
data[cur]=temp[i2++]; }_,1i3Rip
} W%$sA}O
} Q[sj/
i
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} fH{ _X
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改进后的归并排序: >|[ l?`
;.dyuKlI
package org.rut.util.algorithm.support; woI.1e5
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import org.rut.util.algorithm.SortUtil; ~\uI&S5
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/** b{X,0a{*
* @author treeroot 6yU#;|6d
* @since 2006-2-2 |t <Uh,Bt
* @version 1.0 /<"<N<X
*/ VR:4|_o
public class ImprovedMergeSort implements SortUtil.Sort { xcf`i:\
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private static final int THRESHOLD = 10;
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G%Dhj)2}
/* p>9-Ga
* (non-Javadoc) {c|{okQ;Q
* V@%:y tDf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O:G5n 5J
*/ `?M?WaP
public void sort(int[] data) { p1}m_
int[] temp=new int[data.length]; ]|6)'L&]*s
mergeSort(data,temp,0,data.length-1); b"J J3$D
} uu5L9.i9
(j>a?dKDS
private void mergeSort(int[] data, int[] temp, int l, int r) { MTyBGrs(
int i, j, k; :_,oD
int mid = (l + r) / 2; yDl{18~zv
if (l == r) nogdOGo
return; Uxll<z,
if ((mid - l) >= THRESHOLD) yAyq-G"sO
mergeSort(data, temp, l, mid); <Sn;k[M}d
else S!Z2aFj
insertSort(data, l, mid - l + 1); ^*-6PV#Z
if ((r - mid) > THRESHOLD) 6!& DH#M
mergeSort(data, temp, mid + 1, r); r:xbs0
7
else cJ^:b4j
insertSort(data, mid + 1, r - mid); JJE3\
T ?HG}(2
for (i = l; i <= mid; i++) { j*7#1<T
temp = data; -9f+O^x
} 4ju=5D];
for (j = 1; j <= r - mid; j++) {
7~f"8\
temp[r - j + 1] = data[j + mid]; ,\]`X7r
} WciL
zx/
int a = temp[l]; )fGIe rS
int b = temp[r]; 3 *g>kRMJ
for (i = l, j = r, k = l; k <= r; k++) { [p:mja.6y
if (a < b) { |L }1@0i
data[k] = temp[i++]; )0\"8}!
a = temp; |``rSEXYs
} else { L9"yQD^R7?
data[k] = temp[j--]; gS
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b = temp[j]; 78u9> H
} iYPlgt/Y!
} }HLs.k4-;
} eI@nskq#
@Q%9b )\\
/** KFuPgp
* @param data ^F="'/Pq[
* @param l
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* @param i dX^d\
wX
*/ ;"R1>tw3)
private void insertSort(int[] data, int start, int len) { K6BP~@H_D
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }M0GPpv
} g]mR;T3
} rYn)E=FG/
} *ydh.R<hb
} C)z?-f
J^y}3ON
堆排序: -u nK;
U)sw
Iis E
package org.rut.util.algorithm.support; %@,!
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import org.rut.util.algorithm.SortUtil; WBd$#V3
uH.1'bR?a
/** ?LAiSg=eq
* @author treeroot eE0'3?q(
* @since 2006-2-2 rm5@dM@
* @version 1.0 3ss0/\3P
*/ W{l{O1,
public class HeapSort implements SortUtil.Sort{ 4^IqHx;bj
J=`2{
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/* (non-Javadoc) Rk$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CTP!{<ii
*/ -TT{4\%s
public void sort(int[] data) { YLU.]UC
MaxHeap h=new MaxHeap(); . l>.
h.init(data); %p}xW V .
for(int i=0;i h.remove(); \b6vu^;p
System.arraycopy(h.queue,1,data,0,data.length); AK_,$'f
} ]ME2V
5\jzIB_?
private static class MaxHeap{ ZQ)vvD<
7 ~9Lj
void init(int[] data){ pl.x_E,HP
this.queue=new int[data.length+1];
Sa 8T'%W
for(int i=0;i queue[++size]=data; S0]JeP+3!
fixUp(size); |e+r|i]
} 0/4"Jh$t
} cGUsao
}xb?C""q^q
private int size=0; zPyN2|iFah
}9*N EU)o
private int[] queue; {=Z _L?j
m2j]wUh"
public int get() { &0k`=?v$
return queue[1]; d cG)ql4d
} %h9'kJzNk
t^|GcU]
public void remove() { .:(T}\]R
SortUtil.swap(queue,1,size--); r=4vN=:
fixDown(1); *!c&[- g
} ,w|Or}h]7
file://fixdown x4Wu`-4^
private void fixDown(int k) { wN2D{Jj
int j; zS/1v+
while ((j = k << 1) <= size) { VC.zmCglo^
if (j < size %26amp;%26amp; queue[j] j++; XbYST%|.
if (queue[k]>queue[j]) file://不用交换 Q*W$!ZUT
break; mFx\[S
SortUtil.swap(queue,j,k); R\Of ,
k = j; r-'CB
} Xwz'h;Ks_
} /1z3Q_M
private void fixUp(int k) { r=cm(AHF
while (k > 1) { 9?Q0O\&uP
int j = k >> 1; E(miQ
if (queue[j]>queue[k]) #8CeTR23cw
break; d]I3zSIC
SortUtil.swap(queue,j,k); i~i
?M)
k = j; >mUSRf4
} lDVw2J'p
} }Q-%ij2
^tRy6zG
} l",X
16|miK[@
} iL8:I)z
n h&[e
SortUtil: CSVL,(Uw
Mq Q'Kjo
package org.rut.util.algorithm; 2=`}:&0l
bS&XlgnKi
import org.rut.util.algorithm.support.BubbleSort; G@8wv J
import org.rut.util.algorithm.support.HeapSort; X 3(CY`HH[
import org.rut.util.algorithm.support.ImprovedMergeSort; )=Ens=>Z
import org.rut.util.algorithm.support.ImprovedQuickSort; C)(/NGf
import org.rut.util.algorithm.support.InsertSort; !9]q+XefJ
import org.rut.util.algorithm.support.MergeSort; c-`izn]
import org.rut.util.algorithm.support.QuickSort; V[^+lR
import org.rut.util.algorithm.support.SelectionSort; !JnxNIr&i|
import org.rut.util.algorithm.support.ShellSort; ewOe A|
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/** ?O.'_YS
* @author treeroot 8umW>
* @since 2006-2-2 (RafidiH
* @version 1.0 30<3DA_P
*/ Q4B(NYEu(
public class SortUtil { H|I.h{:
public final static int INSERT = 1; n<3{QqF
public final static int BUBBLE = 2; DP08$Iq
public final static int SELECTION = 3; >goG\y
public final static int SHELL = 4; 9ohO-t$XkY
public final static int QUICK = 5; ot;
]?M
public final static int IMPROVED_QUICK = 6; SS7C|*-Zd
public final static int MERGE = 7; $m[*)0/
public final static int IMPROVED_MERGE = 8; 5-.{RU=
public final static int HEAP = 9; VmP5`):?b
/ULO#CN?;
public static void sort(int[] data) { $LHF=tYS
sort(data, IMPROVED_QUICK); 7i0;Ss*
} Gi Max
private static String[] name={ ~M9&SDT/lB
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;
-,VJCPi
}; }c,:uN
;wF)!d
private static Sort[] impl=new Sort[]{ ~=/.ZUQNX
new InsertSort(), !I+F8p
new BubbleSort(), Np>0c-S
new SelectionSort(), k!ac_}&NNv
new ShellSort(), |3dIq=~1"Y
new QuickSort(), k56*eEc
new ImprovedQuickSort(), i/aj;t
new MergeSort(), o!sHK9hvJ)
new ImprovedMergeSort(), TSKR~3D#
new HeapSort() 4mwLlYZ
}; }cd-BW
ROj9#:
public static String toString(int algorithm){ r`A|2(h5B
return name[algorithm-1]; 4\iy{1{E,C
} a
@i?E0Fr
O_^
uLp
public static void sort(int[] data, int algorithm) { ^)S<Ha
impl[algorithm-1].sort(data); @i=_y+|d_
} uE^5o\To
oRQ(l I>
public static interface Sort { m:5x"o7)ln
public void sort(int[] data); vg-'MG
} Dac ,yW
>+F +"NAN
public static void swap(int[] data, int i, int j) { 9ve)+Lk
int temp = data; R/ 3#(5
data = data[j]; H':0
data[j] = temp; bw*D!mm,
} ~'t+X
} c'uDK>