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。 )4hA Fy6l
插入排序: !w0=&/Y{R
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package org.rut.util.algorithm.support; TTWiwPo59
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import org.rut.util.algorithm.SortUtil; ccx0aC3@I
/** }AiF 7N0
* @author treeroot 'geN
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* @since 2006-2-2 /%F,
* @version 1.0 c+O:n:L
*/ I]pz3!On4,
public class InsertSort implements SortUtil.Sort{ W&[-QM8
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/* (non-Javadoc) RSw;b.t7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k!x`cp
*/ aWP9i&
public void sort(int[] data) { M"msLz
int temp; <(xro/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'F:Tv[qx
} gNkBHwv
} w4&\-S#
} 3Tc90p l*t
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} Z^%HDB9^
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冒泡排序: NF-@Q@
eOfVBF<C2
package org.rut.util.algorithm.support; J$T(p%
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import org.rut.util.algorithm.SortUtil; nU6UjC|3
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/** Df]*S
* @author treeroot V@EyU/VJ
* @since 2006-2-2 -zzT:C
* @version 1.0 2E!Q5 l!j
*/ nQg_1+
public class BubbleSort implements SortUtil.Sort{ \NKw,`/
Q)8I(*
/* (non-Javadoc) }^b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uu>R)iTQ%S
*/ Zw<<p|{)<
public void sort(int[] data) { }D3hP|.X
int temp; ; 3sjTqD
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9/I
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if(data[j] SortUtil.swap(data,j,j-1); ^ ]+vtk
} wS
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} u_8Z^T
} myd:"u,}9
} 0bSnD|#I
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} QBfo=9[=e
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选择排序: t8.3
afu!.}4Ct
package org.rut.util.algorithm.support; |1e//*
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import org.rut.util.algorithm.SortUtil; e)87
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7
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/** A>RK3{7
* @author treeroot ?V(+Cc
* @since 2006-2-2 6!;D],,"#.
* @version 1.0 Qv]rj]%
*/ lg{/5gQG
public class SelectionSort implements SortUtil.Sort { !-&;t7R
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/* am7~
* (non-Javadoc) yb0Mn*X+
N
* `joyHKZI.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /xBO;'rR
*/ (rq(y$N
public void sort(int[] data) { qG]0z_dPE~
int temp; ]*Kv[%r07c
for (int i = 0; i < data.length; i++) { 9g.5:
int lowIndex = i; H!l9a
for (int j = data.length - 1; j > i; j--) { wLvM<p7OX
if (data[j] < data[lowIndex]) { K<5 0>uG
lowIndex = j; r8[)C cv
} XK)0Mt\
} k[@/N+;")`
SortUtil.swap(data,i,lowIndex); ~]'yUd1gSZ
} gg Nvm
}
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} .SNg2.
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Shell排序: jx
?"`;a
IlB*JJnl
package org.rut.util.algorithm.support; vkeZ!klYB
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import org.rut.util.algorithm.SortUtil; #qK5i1<
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/** SDs#w
* @author treeroot nUisC5HW
* @since 2006-2-2 J=HN~B1
* @version 1.0 0F
2p4!@W
*/ NYzBfL
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public class ShellSort implements SortUtil.Sort{ VSh&Y_%
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/* (non-Javadoc) \eRct_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nx
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v
*/ *>xCX
public void sort(int[] data) { 6` Aw!&{
for(int i=data.length/2;i>2;i/=2){ 1jaK N*
for(int j=0;j insertSort(data,j,i); cIP%t pTW.
} +*aC
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} _1~pG)y$U
insertSort(data,0,1); Vjd>j; H
} iO2jT+i
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/** JC;&]S.
* @param data Jje!*?&8X
* @param j W! J@30
* @param i k~,
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*/ ,ne3uPRu7~
private void insertSort(int[] data, int start, int inc) { O%px>rdkY
int temp; m1xR uj]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'ud[#@2
} QbY@{"" `
} FPM l;0{
} Iv*u#]{t
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} 9`M7 -{
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快速排序: :H+8E5
MIh\z7gW
package org.rut.util.algorithm.support; 1xSG(!
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import org.rut.util.algorithm.SortUtil; r\)bN4-g
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/** K_!:oe7%
* @author treeroot 9}H]4"f7
* @since 2006-2-2 $+$l?2
* @version 1.0 3Vak
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*/ i4XiwjCHN
public class QuickSort implements SortUtil.Sort{ {faIyKtW
b`F]oQ_*
/* (non-Javadoc) 2.MY8}&WBu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2.
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*/ z%\&n0
public void sort(int[] data) { ?/myG{E
quickSort(data,0,data.length-1); 8pZ Ogh
} ;|:R*(2
private void quickSort(int[] data,int i,int j){ *%E\mu,,c
int pivotIndex=(i+j)/2; e*U6^Xex
file://swap s'$2 }K
SortUtil.swap(data,pivotIndex,j); R'" c
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int k=partition(data,i-1,j,data[j]); 'g3T'2"`5
SortUtil.swap(data,k,j); +(^HL3
if((k-i)>1) quickSort(data,i,k-1); 8IE^u<H(:
if((j-k)>1) quickSort(data,k+1,j); %Y>E
E>`|?DE@
} j0s$}FPUI
/** ?nWzJ5w3
* @param data 3xiDt?&H
* @param i g(,^';j
* @param j T k@ ~w
* @return 4S[UJ%
*/ e6^}XRyf
private int partition(int[] data, int l, int r,int pivot) { 5}c8v2R:B
do{ 1l Cr?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ./L)BLC i
SortUtil.swap(data,l,r); \Pcn D$L
} dC|6z/
while(l SortUtil.swap(data,l,r); ,Q0H)//~
return l; M|fV7g
} V Ew| N)
4I&Mdt<^D
} u8M_2r
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改进后的快速排序: WjCxTBI
A7|L|+ ?
package org.rut.util.algorithm.support; "F6gV;{Bt
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import org.rut.util.algorithm.SortUtil; G=SMz+z
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/** J_.cC
* @author treeroot b&dv("e
4
* @since 2006-2-2 K Hgn
* @version 1.0 d ez4g
*/ 5;,h8vW
public class ImprovedQuickSort implements SortUtil.Sort { "/mtuU3rt
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private static int MAX_STACK_SIZE=4096; S>S7\b'
private static int THRESHOLD=10; =O-irGms*
/* (non-Javadoc) 9y<h.T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4zV
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*/ L"n)fe$
public void sort(int[] data) { F=e-jKogK
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; z^z`{B
int pivot; /,UnT(/k(
int pivotIndex,l,r; ]5Dh<QY&.
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stack[++top]=0; QWEE%}\3}
stack[++top]=data.length-1; Ak8Y?#"wz
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while(top>0){ (<8}un
int j=stack[top--]; c?u*,d) G
int i=stack[top--]; ,wXmJ)/WZ
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pivotIndex=(i+j)/2; 14jN0\
pivot=data[pivotIndex]; G$%F`R[
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SortUtil.swap(data,pivotIndex,j); )%3T1
D/
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file://partition .T3 m%n
l=i-1; XM,slQ
r=j; qb/}&J7+
do{ aWJj@',_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p:z~>ca
SortUtil.swap(data,l,r); &i.sSqSI5
} 7GWOJ^)
while(l SortUtil.swap(data,l,r); 7CvBE;i
SortUtil.swap(data,l,j); Qh(X7B
FROC/'
if((l-i)>THRESHOLD){ >%0$AW|Exu
stack[++top]=i; K,$rG%czX
stack[++top]=l-1; ]JV'z<
} /XEW]/4
if((j-l)>THRESHOLD){ JXYZ5&[
stack[++top]=l+1; ~x#TfeU]
stack[++top]=j; "=T&SY
} dRnf
n P]!{J]
} ?%}!_F`h%
file://new InsertSort().sort(data); #/f~LTE
insertSort(data); _#s,$K#
} 8/BMFRJ
/** v{fcQb
* @param data i i-AE L
*/ >3Q|k{97
private void insertSort(int[] data) { ?1a9k@[t
int temp; ne/JC(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F_jHi0A
} \m
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} $2L6:&.P,
} 6CIzT.
});Rjg
} 7-!n-
Np/\}J&IF
归并排序: Zo yO[#
VL$
T
package org.rut.util.algorithm.support; NX.xEW@
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import org.rut.util.algorithm.SortUtil; G7Sw\wW
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/** uMS+,dXy
* @author treeroot u0 tlf
* @since 2006-2-2 ?!6Itkg
* @version 1.0 d6YXITL)\>
*/ 2_+>a"8Y
public class MergeSort implements SortUtil.Sort{ 6AGZ)gX
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/* (non-Javadoc) ]b!n ;{5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -` U|5
*/ EZ]4cd/i
public void sort(int[] data) { )J}v.8
int[] temp=new int[data.length]; U5OX.0
mergeSort(data,temp,0,data.length-1); pUb1#=
} <78|~SKAV
_wS=*-fT
private void mergeSort(int[] data,int[] temp,int l,int r){ (^m]
7l
int mid=(l+r)/2; 0!_?\)X
if(l==r) return ; #e|o"R;/`
mergeSort(data,temp,l,mid); 2 HEU
mergeSort(data,temp,mid+1,r); "J 1A9|
for(int i=l;i<=r;i++){ ?<TJ}("/
temp=data; 49$<:{ ~
} 7upko9d/
int i1=l; h@!p:]
int i2=mid+1; hx$61E=
for(int cur=l;cur<=r;cur++){ :Kwu{<rJ!(
if(i1==mid+1) :^v Q4/,
data[cur]=temp[i2++]; C,Nf|L((6
else if(i2>r) %+N]$Q
data[cur]=temp[i1++]; Pc`d]*BYi
else if(temp[i1] data[cur]=temp[i1++]; )Y7H@e\1
else VAz4@r7hkq
data[cur]=temp[i2++]; LV^^Bd8Ct
} v$|~
g'6
} 3SP";3+
:*M?RL@j
} 30!DraW8
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改进后的归并排序: e~N&?^M
fRQ,Z
package org.rut.util.algorithm.support; 0\P5=hD)K
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import org.rut.util.algorithm.SortUtil; b0{i +R
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/** si]VM_w6
* @author treeroot nn_O"fZi
* @since 2006-2-2 ]?tRO
* @version 1.0 =9GALoGL
*/ Q&eyqk
public class ImprovedMergeSort implements SortUtil.Sort { :o>=^N
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private static final int THRESHOLD = 10; Y 3BJ@sqz
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/* \yr9j$
* (non-Javadoc) Lt't
* N}?|ik
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^v'kEsE^*
*/ -G~]e6:zD
public void sort(int[] data) { 4XjwU`
int[] temp=new int[data.length]; wtTy(j,9
mergeSort(data,temp,0,data.length-1); .h-mFcjy
} FvpU]
/?'~`4!(
private void mergeSort(int[] data, int[] temp, int l, int r) { Zv;nY7B
int i, j, k; h;gc5"mG
int mid = (l + r) / 2; }=[p>3Dd
if (l == r) /iU<\+ H
return; TTz=*t+D
if ((mid - l) >= THRESHOLD) ]y_:+SHc
mergeSort(data, temp, l, mid); Z-PBCU
else '~D4%WKT
insertSort(data, l, mid - l + 1); $0_K&_5w~
if ((r - mid) > THRESHOLD) JU?;Kq9R
mergeSort(data, temp, mid + 1, r); .9nqJ7]
else yE8D^M|g
insertSort(data, mid + 1, r - mid); !kovrvM6F
.xJ54Vz
for (i = l; i <= mid; i++) { K%v:giN$l`
temp = data; D$hQ-K
} J:@gmo`M;V
for (j = 1; j <= r - mid; j++) { )D+BvJ Y"
temp[r - j + 1] = data[j + mid]; $ZM'dIk?
} 4z0gyCAC A
int a = temp[l]; .l1x~(
int b = temp[r]; ?+t;\
for (i = l, j = r, k = l; k <= r; k++) { ys9:";X;}
if (a < b) { >dl5^
data[k] = temp[i++]; F1#{(uW
a = temp; q`*.F#/4c
} else { |[?Otv
data[k] = temp[j--]; ieZ$@3#&z
b = temp[j]; {rc3`<%
} jJ#D`iog5
} |Ea%nghl
} Bl b#h
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/** f .O^R~,
* @param data Kb%Y%j
* @param l =XR~I
* @param i MB)<@.A0
*/ )U %`7(bN
private void insertSort(int[] data, int start, int len) { wL0[Slf}
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {`!6w>w0
} [c,V=:Cq
} ;'S,JGpvT
} 3FiK/8mu
} /vSGmW-*
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堆排序: 2;v:Z^&
:uCwWv
package org.rut.util.algorithm.support; EO !,rB7I
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import org.rut.util.algorithm.SortUtil; sX1DbEjj[o
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/** w"'
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* @author treeroot XoKgs, y4
* @since 2006-2-2 jFN0xGZ
* @version 1.0 Nc\DXc-N
*/ k{ qxsNM
public class HeapSort implements SortUtil.Sort{ ,Cr%2Wg-
>Sc yc-n
/* (non-Javadoc) 4S26TgY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )L b` 4B
*/ dmF=8nff
public void sort(int[] data) { q;eb
MaxHeap h=new MaxHeap(); #/YS
h.init(data); kLgkUck8]
for(int i=0;i h.remove(); T?1BcY
System.arraycopy(h.queue,1,data,0,data.length); c(Dp`f,
} n#X~"|U`
4/(#masIL
private static class MaxHeap{ eo]nkyYDP
A%D'Z85
-
void init(int[] data){ !aT:0m$:9c
this.queue=new int[data.length+1]; "@G[:(BoB<
for(int i=0;i queue[++size]=data; {)qr3-EM#
fixUp(size); 2y`h'z
} IWo'{pk
} ^%f8JoB
3 yx[*'e$
private int size=0; ljbAfd
1V2]@VQF
private int[] queue; |=q~X}DA
M(C">L]8
public int get() { );!ND%
return queue[1]; \TP$2i%W
} Q:P)g#suc
%6Gg&Y$j!
public void remove() { _HwA%=>7
SortUtil.swap(queue,1,size--); c6:uM1V{
fixDown(1); IHEbT
} XUP{]w`.Z
file://fixdown xa)p,
private void fixDown(int k) { :?xH)J,imk
int j; A+l(ew5Lw$
while ((j = k << 1) <= size) { y.Z_\@
if (j < size %26amp;%26amp; queue[j] j++; Q/|.=:~FO
if (queue[k]>queue[j]) file://不用交换 m1W) PUy
break; %,[,mW4l
SortUtil.swap(queue,j,k); i]Mem M-
k = j; 9^/Y7Wp/@
} `KZV@t
} N:lE{IvRJ
private void fixUp(int k) { ,V1"Typ#<
while (k > 1) { _<AkM"
int j = k >> 1; b+~_/;Y9
if (queue[j]>queue[k]) Z^'~iU-?
break; q(n"r0)=
SortUtil.swap(queue,j,k); `NtW+v
k = j; vEI{AmogRx
} c0o]O[
} s*rR>D:
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}
}ktIG|GC
i|{psA
} ZLzc\>QX
r)gK5Mv
SortUtil: JU)^b
V_
LuySa2,
package org.rut.util.algorithm; s~OcL 5
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import org.rut.util.algorithm.support.BubbleSort; KJ+6Y9b1
import org.rut.util.algorithm.support.HeapSort; 6/<Hx@r (
import org.rut.util.algorithm.support.ImprovedMergeSort; 0d+n[Go+S
import org.rut.util.algorithm.support.ImprovedQuickSort; k^cZePqE6d
import org.rut.util.algorithm.support.InsertSort; L-(bw3Yr>
import org.rut.util.algorithm.support.MergeSort; gY7sf1\wX
import org.rut.util.algorithm.support.QuickSort; EK# 11@0%
import org.rut.util.algorithm.support.SelectionSort; Phi5;U!
import org.rut.util.algorithm.support.ShellSort; QD7KE6KP'
=DdPwr 0Op
/** M0$MK>
* @author treeroot %np(z&@wi
* @since 2006-2-2 "s|P,*Xf
* @version 1.0 6>]
*/ g**!'T4&o
public class SortUtil { MFROAVPZ5
public final static int INSERT = 1; #e@NV4q
public final static int BUBBLE = 2; #QFz /6
public final static int SELECTION = 3; 9\EW~OgTu
public final static int SHELL = 4; pFH.beY
public final static int QUICK = 5; e%e.|+
public final static int IMPROVED_QUICK = 6; L;0
NR(b!
public final static int MERGE = 7; Dn)yBA%
public final static int IMPROVED_MERGE = 8; _.9 5>`
public final static int HEAP = 9; dU3A:uS^
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public static void sort(int[] data) { ?7fqWlB
sort(data, IMPROVED_QUICK); 4~Qnhv7
} y#a,d||N1
private static String[] name={ n#6{K6}k~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" PE5*]+lW.
}; .F,l>wUNe
DinZZ
private static Sort[] impl=new Sort[]{ &.E/%pQ`
new InsertSort(), AO8 #l
YP?
new BubbleSort(), c>$d!IKCL
new SelectionSort(), ?1L<VL=b
new ShellSort(), _GkLspSaU
new QuickSort(), f+9eB
new ImprovedQuickSort(), wn@~80)$
new MergeSort(), 8=$X hC
new ImprovedMergeSort(), QKjn/%l"@
new HeapSort() Fj`k3~tUw
}; n{N0S^h
E2M<I;:EA
public static String toString(int algorithm){ QqQhQ GV
return name[algorithm-1]; f$FO 1B)
} ~R[ k^i.Y
l)\Q~^cxd
public static void sort(int[] data, int algorithm) { {_b2!!p
impl[algorithm-1].sort(data); MH#Tp#RG
} Y/J~M$9P,
i[[.1MnS
public static interface Sort { q;#AlquY @
public void sort(int[] data); F^/KD<cgK
} ^B1Ft5F`b
i!%WEHPe
public static void swap(int[] data, int i, int j) { w)ki<Dudg
int temp = data; ulzX$
data = data[j]; CJk"yW[,|
data[j] = temp; Dh4Lffy
} WSMpX-^e@
} wb9(aS4