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。 { SJ=|L6
插入排序: >J|I
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package org.rut.util.algorithm.support; XBdC/DM[
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import org.rut.util.algorithm.SortUtil; B$_F)2%m;
/** VNx}ADXu ]
* @author treeroot e*:[#LJ]C
* @since 2006-2-2 a:7"F{D91
* @version 1.0 ,`B*rCOa
*/ ')}$v+9h
public class InsertSort implements SortUtil.Sort{ 0A/GWSmF
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/* (non-Javadoc) ` L6H2:pf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?9
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*/ -|:7<$2#I
public void sort(int[] data) { >dn[oS,
int temp; lKxv
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yIh>j.P
} Gq$9he<
} m{I_E
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} p%G4Js.
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} Wi'BX#xCB
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冒泡排序: )p).}"
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package org.rut.util.algorithm.support; A|c :&i
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import org.rut.util.algorithm.SortUtil; ak;fCx&
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/** l)Q,*i
* @author treeroot AFc#2wn
* @since 2006-2-2 k'xnl"q
* @version 1.0 #Jq@p_T"
*/ @$F(({?
public class BubbleSort implements SortUtil.Sort{ DOw<
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/* (non-Javadoc) +[zrU`!@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !3-mPG<
]
*/ Z=L' [6
public void sort(int[] data) { e-]k{_wm
int temp; (b GiBsb
for(int i=0;i for(int j=data.length-1;j>i;j--){ .1t$(]CyC
if(data[j] SortUtil.swap(data,j,j-1); KQNSYI7a
} $xvEYK
} ? Ls]k
} .[+8D=
} w-HgC
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} Ra;e#)7X
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选择排序: @433?g`2b
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package org.rut.util.algorithm.support; Z@RAdwjR`p
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import org.rut.util.algorithm.SortUtil; svU107?
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/** i5(_.1X<#{
* @author treeroot t8U)za
* @since 2006-2-2 TEE$1RxV(
* @version 1.0 E"x 2 jP
*/
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public class SelectionSort implements SortUtil.Sort { YEXJh!X
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/* H)
m!)=\'
* (non-Javadoc) }tc,3>/
* 5hg>2?e9s?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -kQ{~">w
*/ h'IBVI!P
public void sort(int[] data) { l EQn2+
int temp; @}aK\
for (int i = 0; i < data.length; i++) { $n(@hT>?
int lowIndex = i; S\g8(\u
for (int j = data.length - 1; j > i; j--) { )1H]a'j
if (data[j] < data[lowIndex]) { Q:=s99
lowIndex = j; u )
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}
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} i aP+Vab
SortUtil.swap(data,i,lowIndex); %<I0-o
} J^0co1Y0
} d-xKm2sH
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} `|v0@-'$
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Shell排序: 5vg@zH\z
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package org.rut.util.algorithm.support; }ndH|,
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import org.rut.util.algorithm.SortUtil; PJh\U1Z
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/** cZ^$!0
* @author treeroot +w GE
* @since 2006-2-2 TtKBok
* @version 1.0 ]O&TU X@)
*/ qX-Jpi P
public class ShellSort implements SortUtil.Sort{ So0YvhZ+
%# J8cB
/* (non-Javadoc) kpK:@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8oN4!#:
*/ AVyo)=&
public void sort(int[] data) { ROQk^
for(int i=data.length/2;i>2;i/=2){ $ZwsTV]x
for(int j=0;j insertSort(data,j,i); y(6&90cr
} /Hx%gKU
} /M B0%6m
insertSort(data,0,1); h/eKVRGs"
} kwZC3p\\
fs~n{z,ja%
/** 6Y\9h)1Jo
* @param data Njz,y}\
* @param j Oh<Z0M)
* @param i v8-F;>H
*/ _qJ[~'m<^C
private void insertSort(int[] data, int start, int inc) { _Ndy;MQ
int temp; oBKZ$&_h
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 49HtI9@
} Q.M3rRh
} K& 2p<\2
} tlqDY1
od?Q&'A
} AvP*p{we
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快速排序: I2K52A+
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package org.rut.util.algorithm.support; OXA_E/F
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import org.rut.util.algorithm.SortUtil; /KlA7MH 6
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/** +S0A`rL
* @author treeroot zXUE<\
* @since 2006-2-2 *b7HtUA
* @version 1.0 #BlH)Cv
*/ @YWfq$23
public class QuickSort implements SortUtil.Sort{ >G/>:wwSP.
MH{vFA4:,
/* (non-Javadoc) mj5A*%"W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D1#E&4
*/ ((;9%F:/$
public void sort(int[] data) { --",}%-
quickSort(data,0,data.length-1);
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} v+G}n\F
private void quickSort(int[] data,int i,int j){ a[ Txd=b
int pivotIndex=(i+j)/2; dA\>z[n=
file://swap rYN`u
SortUtil.swap(data,pivotIndex,j); ot(|t4^
j(Q$frI
int k=partition(data,i-1,j,data[j]); ?uQ|?rk
SortUtil.swap(data,k,j); .$v]Bxu
if((k-i)>1) quickSort(data,i,k-1); :Q$3P+6 a
if((j-k)>1) quickSort(data,k+1,j); f_.1)O'83
|(XV '-~
} fa5($jJ&
/** hO{@!H$l
* @param data )@SIFE
* @param i ?_n.B=H`8
* @param j JJ qX2B
* @return V!"^6)
*/ t'm]E2/
private int partition(int[] data, int l, int r,int pivot) { G.B^C)guu
do{ $.V(_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); as
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SortUtil.swap(data,l,r);
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} ,,BNUj/:
while(l SortUtil.swap(data,l,r); T']*h8
return l; NF&\<2kX
} 2Ni{wg"
VFA1p)n
} s/Q}fW$ex
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改进后的快速排序: rhNdXYY>
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package org.rut.util.algorithm.support; PMXnupt
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import org.rut.util.algorithm.SortUtil; JBb}{fo~
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/** hn!$?Vo.
* @author treeroot 5:n&G[Md
* @since 2006-2-2 sPc\xY
* @version 1.0 \hNMTj#O
*/ >]C;sP
public class ImprovedQuickSort implements SortUtil.Sort { -!;vX
@
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private static int MAX_STACK_SIZE=4096; b2p<!?
private static int THRESHOLD=10; DB?_E{y]
/* (non-Javadoc) <JZ=K5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L=HL1Qe$G]
*/ -6t#
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public void sort(int[] data) { A=h`Z^8\B
int[] stack=new int[MAX_STACK_SIZE]; (7Y :3
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int top=-1; )](8{}wo
int pivot; O@E&lP6
int pivotIndex,l,r; i1aS2gFi_
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stack[++top]=0; hih`: y
stack[++top]=data.length-1; GIZNHG
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while(top>0){ _Q.3X[88C
int j=stack[top--];
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int i=stack[top--]; 8
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pivotIndex=(i+j)/2; L/<Up
pivot=data[pivotIndex]; m^]/
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SortUtil.swap(data,pivotIndex,j); <;U"D.'
cpE&Fba}"
file://partition wQ[2yq
l=i-1; !lu$WJ{M
r=j; Z|wZyt$$
do{ *+@/:$|U
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7*[>e7:A
SortUtil.swap(data,l,r); 6e~+@S
} j&8 ~X2?*
while(l SortUtil.swap(data,l,r); Oa@X! \
SortUtil.swap(data,l,j); dWm[#,Q?
!4oYQB
if((l-i)>THRESHOLD){ #axRg=d?K
stack[++top]=i; cteHuRd
stack[++top]=l-1; |'KNR]:
N
} Zjo9c{\
if((j-l)>THRESHOLD){ Jw
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stack[++top]=l+1; ,&)XhO?
stack[++top]=j; =
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} Pv0OoN*eJ{
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} k5}i^^.
file://new InsertSort().sort(data); dc lJ
insertSort(data); Bwll
[=_I
} vZ|-VvG
/** I;mtyS
* @param data SAo"+%
*/ Y{p *$
private void insertSort(int[] data) { AA05wpu8
int temp; ~r=TVHjqi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |:
nuT$(
} :;??!V
} a`|/*{
} 1 !\pwd@{
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} d,D)>Y'h
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归并排序: 7r}gS2d
#c!(97l6o
package org.rut.util.algorithm.support; s0nihX1Z-
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import org.rut.util.algorithm.SortUtil; rxDule3m
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/** X.UIFcK^
* @author treeroot d3n TJ X
* @since 2006-2-2 gNZ^TeT
* @version 1.0 IFv2S|
*/ }#yRaIp
public class MergeSort implements SortUtil.Sort{ ;W+.]_$6)T
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/* (non-Javadoc) #Q$4EQB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {[Yv@CpN
*/ X.272q<.
public void sort(int[] data) { qt;6CzL
C
int[] temp=new int[data.length]; H_*]Vg
mergeSort(data,temp,0,data.length-1); f-{[ushj
} IndNR:"g
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private void mergeSort(int[] data,int[] temp,int l,int r){ =#+Z KD
int mid=(l+r)/2; 1eb1Lvn
if(l==r) return ; =,0E3:X^
mergeSort(data,temp,l,mid); q_oYI3
mergeSort(data,temp,mid+1,r); Ap97 Zcw
for(int i=l;i<=r;i++){ wh~~g
qi9
temp=data; m?M(79u[
} "&2D6
int i1=l; UiYA#m
int i2=mid+1; *~:@xMa
for(int cur=l;cur<=r;cur++){ ;UWdT]>!?
if(i1==mid+1) nt5 ~"8
data[cur]=temp[i2++]; jR/X}XQtY
else if(i2>r) z%;\q$
data[cur]=temp[i1++]; {yG)Ii
else if(temp[i1] data[cur]=temp[i1++]; 8D+OF 6CM
else a)Wf* <B
data[cur]=temp[i2++]; T`W FY
} `*N0 Lbl]
} m,.d< **
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} @Qx;J<{+g
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改进后的归并排序: )8Q|y
.upcUS8
package org.rut.util.algorithm.support; XHe=
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import org.rut.util.algorithm.SortUtil; ?Z14l0iZ%d
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/** U}qW9X;o
* @author treeroot M_XZOlW5
* @since 2006-2-2 !-;Me&"I=`
* @version 1.0 h.7 1O"N
*/ MA1,;pv6
public class ImprovedMergeSort implements SortUtil.Sort { 8a05`ZdP
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private static final int THRESHOLD = 10; @D60
:))AZ7_
/* 3PJ
* (non-Javadoc) _5X}&>>lhF
* H$[--_dI{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WrD20Q$9Q
*/ :V_$?S
public void sort(int[] data) { goHr#@
int[] temp=new int[data.length]; T+~~w'v0
mergeSort(data,temp,0,data.length-1); 0[hl&7 Ab@
} JT:9"lmJz,
=)bZSb"<"
private void mergeSort(int[] data, int[] temp, int l, int r) { Y{J/Oib
int i, j, k; }$UuYO/i
int mid = (l + r) / 2; <4!w2vxG
if (l == r) @FbzKHdV/
return; ]T*{M
if ((mid - l) >= THRESHOLD) TVjY8L9'h
mergeSort(data, temp, l, mid); [S<DdTY9hZ
else i;\i4MT
insertSort(data, l, mid - l + 1); Z,d/FC#y(
if ((r - mid) > THRESHOLD) @*c+`5)_
mergeSort(data, temp, mid + 1, r); x[>A'.m@)
else eEU:
insertSort(data, mid + 1, r - mid); Q%
dpGI
RL&*.r&
for (i = l; i <= mid; i++) { KlrKGmy,)
temp = data; N.&K"J
} w1GCjD*y
for (j = 1; j <= r - mid; j++) { iYnw?4Y
temp[r - j + 1] = data[j + mid]; Y&&Y:+
V
} !
4s$93
int a = temp[l]; \XpPb{:>
int b = temp[r]; D&oC1
for (i = l, j = r, k = l; k <= r; k++) { r]]Ke_s!
if (a < b) { ~q1s4^J
data[k] = temp[i++]; r7IhmdA
a = temp; L~yy;)]W
} else { gZPJZN/cpz
data[k] = temp[j--]; o+ tY[UX
b = temp[j];
&bL1G(}
} "@f`O
} h`vM+,I
} *wSl~J|ZM%
#Y{"`5>
/** jf%Ydr}`
* @param data k5ZwGJ#r
* @param l =W4cWG?+
* @param i ^X_%e |
*/ W&*{j;e9%I
private void insertSort(int[] data, int start, int len) { t4JGd)r
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D{8V^%{
} '@:;oe@]
} <<A@69"4n
} JN8k x;@
} JTb<uC
@lJGdp
堆排序: oZ8SEC"]
AG9U2x
package org.rut.util.algorithm.support; =*(d+[_
xQD#;
7
import org.rut.util.algorithm.SortUtil; G's/Q-'[\
D~%cf
/** )q=1<V44d
* @author treeroot JRo{z{!O6
* @since 2006-2-2 V,Gt5lL&/!
* @version 1.0 aI\VqOt]
*/ O{dx+f
public class HeapSort implements SortUtil.Sort{ 2N]y)S_<V
Ny~;"n
/* (non-Javadoc) TQEZ<B$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kNjbpCE\!
*/ }5]NUxQ_
public void sort(int[] data) { *in_Zt3
MaxHeap h=new MaxHeap(); `#(4K4]1.
h.init(data); l,/5$JGnk
for(int i=0;i h.remove(); $@U`zy"Y
System.arraycopy(h.queue,1,data,0,data.length); @vv`86bm
} UtWoSFZ'o!
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private static class MaxHeap{ GV2}K
<s
Z@h]dU5%a
void init(int[] data){ My[L3KTTp
this.queue=new int[data.length+1]; 3!}#@<j
for(int i=0;i queue[++size]=data; i$F)h<OU+
fixUp(size); $6J5yE
} '2
)d9_ w
} k\%{1oRA
>?DrC /
private int size=0; NKMB,b
wHY;Y-(ZT
private int[] queue; r>G$u
%_z]iz4
public int get() { fkI<RgM
return queue[1]; Zkz:h7GUG-
} @&~BGh
mDq01fU4
public void remove() { tL3(( W"
SortUtil.swap(queue,1,size--); *&U9npN
fixDown(1); 1X{A}9nA
} C
qxP@
file://fixdown LCdc7
private void fixDown(int k) { ce;9UBkOg2
int j; 7O{\^Jz1
while ((j = k << 1) <= size) { 8+!$k!=X
if (j < size %26amp;%26amp; queue[j] j++; ,~3 sba
if (queue[k]>queue[j]) file://不用交换 u )ld
break; VJNPs6
SortUtil.swap(queue,j,k); ^6`R:SV4Gx
k = j; ;m&f Vp
} Jsw<,uTD
} A1Zu^_y'
private void fixUp(int k) { ZWr\v!4
while (k > 1) { \"lzmxe0p
int j = k >> 1; Zc"]Cv(
if (queue[j]>queue[k]) 7_{x '#7
break; 7.=u:PK7kM
SortUtil.swap(queue,j,k); ``NjNd
k = j; `=\G>#p<T
} ({8Q=Gh
} 9~4Kbmr>q
0 @,@
} d- ]%
aE;!mod
} ^@)+P/&
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SortUtil: 9sRP8Nj|
?,Hk]Rl3
package org.rut.util.algorithm; -x RsYYw
UIyOn` d "
import org.rut.util.algorithm.support.BubbleSort; |M0TG
import org.rut.util.algorithm.support.HeapSort; c#rbyx?5
import org.rut.util.algorithm.support.ImprovedMergeSort; `t8e2?GH
import org.rut.util.algorithm.support.ImprovedQuickSort; 6qw_ |A&g
import org.rut.util.algorithm.support.InsertSort; [Y:HVr,
import org.rut.util.algorithm.support.MergeSort; d }]b
import org.rut.util.algorithm.support.QuickSort; 5}By2Tx
import org.rut.util.algorithm.support.SelectionSort; K@d`jb4T
import org.rut.util.algorithm.support.ShellSort; ElYHA
fG.w;Aemv5
/** NyGF57v[M
* @author treeroot bLUn0)c
* @since 2006-2-2 HPgMVp'
* @version 1.0 WUxr@0
*/ -7yX>Hjl
public class SortUtil { :<jf}[w!
public final static int INSERT = 1; J6Kfz~%
public final static int BUBBLE = 2; D@3|nS
public final static int SELECTION = 3; 1.>`h:
public final static int SHELL = 4; P]y5E9 k
public final static int QUICK = 5; P"~B2__*
public final static int IMPROVED_QUICK = 6; 69L s"e
public final static int MERGE = 7; QKF2_Acc
public final static int IMPROVED_MERGE = 8; CBvBBt*
public final static int HEAP = 9; LyQO_mT2
rDSt
~l
public static void sort(int[] data) { 0xjV*0?s
sort(data, IMPROVED_QUICK); 2R_k$kHl
} TS%cTh'ItH
private static String[] name={ hgh1G7A&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0zfrx-'zN
}; Le}q>>o;q
H37Z\xS
private static Sort[] impl=new Sort[]{ ?Jma^ S
new InsertSort(), sS0psw1
new BubbleSort(), X `vDhfh>N
new SelectionSort(), )45,~+XX
new ShellSort(), kC#;j=K?
new QuickSort(), gF:wdcO
new ImprovedQuickSort(), A^m hPBT_
new MergeSort(), 0(..]\p^d
new ImprovedMergeSort(), J5\> 8I,a
new HeapSort() GC{Ys|s
}; Isi,Tl ^
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public static String toString(int algorithm){ ^X?[zc GE
return name[algorithm-1]; ;Joo!CXHO
} .K0BK)axO
ZuE0'9
public static void sort(int[] data, int algorithm) { 2ru6bIb;
impl[algorithm-1].sort(data); Ex Qld
} c.XLEjV|
@e slF
public static interface Sort { I4)vJ0
public void sort(int[] data); Obd!
} x0#+yP
tF'67,~W
public static void swap(int[] data, int i, int j) { vXf#gX!Y
int temp = data; .5T7O_%FP
data = data[j]; X(1.Hjh
data[j] = temp; Ylf 6-FbF
} hVID~L$
} 5-g0 2g