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。 2EE/xnwX
插入排序: R ;5w*e}?5
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package org.rut.util.algorithm.support; oZ6xHdPc4
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import org.rut.util.algorithm.SortUtil; %9mB4Fc6b)
/** B>X+eK
* @author treeroot 1sc #!^Oo
* @since 2006-2-2 mm#U a/~1u
* @version 1.0 &%u,b~cL?
*/ |BH,
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public class InsertSort implements SortUtil.Sort{ k`)LO`))
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/* (non-Javadoc) pI(FUoP^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >jl"Yr#
*/ a^[io1}-
public void sort(int[] data) { \<lV),
int temp; 0 {{7 "
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]CC~Eo-%-
} w?M*n<)
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} +\Q6Onqr
} .E;6Xx_+r
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} QH\*l~;B\
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冒泡排序: ~w]1QHA'f
vA`[#(C
package org.rut.util.algorithm.support; 5tq$SF42X
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import org.rut.util.algorithm.SortUtil; \TMRS(
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/** Ur&: Rr
* @author treeroot 8QC:ro
* @since 2006-2-2 w5|@vB/pj
* @version 1.0 '2[ _U&e
*/ ^"buF\3L
public class BubbleSort implements SortUtil.Sort{ Bl`e+&b
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/* (non-Javadoc) Kyl(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dje3&a
*/ ) 0}o bPp
public void sort(int[] data) { {7/6~\'/@
int temp; b:O4d<+%
for(int i=0;i for(int j=data.length-1;j>i;j--){ <Isr
if(data[j] SortUtil.swap(data,j,j-1); y
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} Ds}6{']K
} Wnf`Rf)1z
} |=%$7b\C
} t&r?O dc&m
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}
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选择排序: r1?LKoJOn
A{+ZXu}
package org.rut.util.algorithm.support; m9e$ZZG$
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import org.rut.util.algorithm.SortUtil; pu>LC6m3a
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/** uwQ4RYz
* @author treeroot X 4/r#<Da
* @since 2006-2-2 =~EQ3uX
* @version 1.0 YYM
*/ (U.&[B
public class SelectionSort implements SortUtil.Sort { O0$ijJa|
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/* R>0ta
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* (non-Javadoc) m",bfZ
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *@BBlkcx
*/ M]_vb,=1
public void sort(int[] data) { \Fj4Gy?MW
int temp; [FCNW0NV
for (int i = 0; i < data.length; i++) { Bf*
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int lowIndex = i; A23 Z)`
for (int j = data.length - 1; j > i; j--) { )7`~U"r
if (data[j] < data[lowIndex]) { 0>?mF]M
lowIndex = j; ~~fL`"
} ?b7vc^E&
} gTQ6B,`/8
SortUtil.swap(data,i,lowIndex); Xs?>6i@$$
} zYs? w=
} (f.A5~e
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} VI+Y 4T@
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Shell排序: {MEU|9@
Y
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package org.rut.util.algorithm.support; b~~}(^Bg
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import org.rut.util.algorithm.SortUtil; Wex4>J<`/
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/** iH$N HfH
* @author treeroot i*; V4zh
* @since 2006-2-2 dJ;;l7":~
* @version 1.0 G?V3lQI1n
*/ k/mY. 2yPv
public class ShellSort implements SortUtil.Sort{ V('b|gsEo
0ib 6}L%
/* (non-Javadoc) Pb`sn5;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7yj2we
*/ G^OSXf5
public void sort(int[] data) { =1JRu[&]8
for(int i=data.length/2;i>2;i/=2){ o._^
for(int j=0;j insertSort(data,j,i); So 5{E4[
} nbRg<@
} UM]wDFn'E
insertSort(data,0,1); a3)#tt=rA
} j>:T)zhyY
@]7\.>)
/** GkO6r'MVE
* @param data L7b{H2 2
* @param j @Uu\x~3y
* @param i x~z 2l#ow
*/ ZN1p>+oY!
private void insertSort(int[] data, int start, int inc) { NR [VGZj
int temp; hPH7(f|c{g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GJ$,@
} g-s@m}[T
} V:+bq`
} oe<Y,%u"6
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} d"cfSH;h
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快速排序: uXC?fMWp.
O*PHo_&G
package org.rut.util.algorithm.support; )
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import org.rut.util.algorithm.SortUtil; &sWyh[`P
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/** loB/w{r*x
* @author treeroot WI9.?(5q
* @since 2006-2-2 ,jWd?-NH
* @version 1.0 X>4`{x `
*/ 9..k/cH
public class QuickSort implements SortUtil.Sort{ a]k&$
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rb0{t[IU
*/
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public void sort(int[] data) { R;yAqr29
quickSort(data,0,data.length-1); E6gEP0b
} *LVM}| f
private void quickSort(int[] data,int i,int j){ "10VN*)J}
int pivotIndex=(i+j)/2; cmeyCyV*
file://swap aFym&n\
SortUtil.swap(data,pivotIndex,j); ..:V3]-D
S#9SAX [
int k=partition(data,i-1,j,data[j]); g}-Z]2(c#
SortUtil.swap(data,k,j); kA_3o)J
if((k-i)>1) quickSort(data,i,k-1); yM2&cMHH~
if((j-k)>1) quickSort(data,k+1,j); l_%~X9"
$^!w`>0C
} !O-+h0Z
/** @FV;5M:I
* @param data .g~@e_;):
* @param i a\w|tf
* @param j \2,18E
* @return (AYS>8O&
*/ 1sjn_fPz
private int partition(int[] data, int l, int r,int pivot) { U!5*V9T~J
do{ h"ylpv+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OKVYpf
SortUtil.swap(data,l,r); <&2,G5XA
} =1VH5pVr}
while(l SortUtil.swap(data,l,r); m { fQL
return l; ar|[D7Xrq\
} \gkajY-?
dWy1=UQfP
} Z]f2&
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改进后的快速排序: q@9i3*q;
mmL~`i/
package org.rut.util.algorithm.support; ;Y^RF?un
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import org.rut.util.algorithm.SortUtil; m #QI*R
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/** l,FoK76G
* @author treeroot s>\g03=
* @since 2006-2-2 6~ `bAe`}
* @version 1.0 +df?N
*/ (do=o&9pm
public class ImprovedQuickSort implements SortUtil.Sort { hhGpB$A
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private static int MAX_STACK_SIZE=4096; j!\0Fyr
private static int THRESHOLD=10; u2]g1XjeG
/* (non-Javadoc) \T9UbkR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RH Vv}N0
*/ e9_+$Oo
public void sort(int[] data) { 6sl<Z=E#
int[] stack=new int[MAX_STACK_SIZE]; VWy:U#;+8
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int top=-1; lM*O+k
int pivot; 2H[aY%1T
int pivotIndex,l,r; =7fh1XnW
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stack[++top]=0; I;-5]/,
stack[++top]=data.length-1; i(;-n_:,`
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while(top>0){ r5!M;hU1j
int j=stack[top--]; rVy\,#|
int i=stack[top--]; *hs<Ez.cC
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pivotIndex=(i+j)/2; SsX05>
pivot=data[pivotIndex]; TSSt@xQ+
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SortUtil.swap(data,pivotIndex,j); [E
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file://partition JK"uj%
l=i-1; .oj" ru
r=j; ' u};z:t
do{ sDm},=X}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y%bqeo
L~
SortUtil.swap(data,l,r); Os 2YZ<t
} \BaN5+B6
while(l SortUtil.swap(data,l,r); ',`4 U F
SortUtil.swap(data,l,j); J 7;n;Mx
G!Oq>7
if((l-i)>THRESHOLD){ hX| UE
stack[++top]=i; V)QR!4De
stack[++top]=l-1; |~LjH |*M
} KH>sCEt
if((j-l)>THRESHOLD){ <S@mQJS!y
stack[++top]=l+1; vC<kpf!
stack[++top]=j; ]#q7}Sd
} )^S^s>3
b[o"Uq@8?
} 8sF0]J[g{
file://new InsertSort().sort(data); n3g
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insertSort(data); lkWeQ)V
} ((>3,%B`
/** vKf;&`^qE
* @param data GnrW{o
*/
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private void insertSort(int[] data) { }_ :#fE
int temp; =tRe3o0(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -sH.yAvC6
} k,iV$,[TF
} Ox*T:5
} 40d9/$uzh
I u~aTgHX%
} Doc'7P
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归并排序: \
Q8q9|g?]
p
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package org.rut.util.algorithm.support; 4i\aW:_'i
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import org.rut.util.algorithm.SortUtil; 5YG@[ic
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/** _B7?C:8Q-
* @author treeroot YSz$` 7i
* @since 2006-2-2 ?CW^*So
* @version 1.0 P}WhE
*/ X`v79`g_
public class MergeSort implements SortUtil.Sort{ FlA\Ad;v
MN M>
/* (non-Javadoc) b,
**$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CE7pg&dJ)i
*/ e9hVX[uq
public void sort(int[] data) { 6dR-HhF
int[] temp=new int[data.length]; m>-^K
mergeSort(data,temp,0,data.length-1); 9 c5G6n0
} ah"MzU)
9q)nNX<$)
private void mergeSort(int[] data,int[] temp,int l,int r){ L5qCv -{
int mid=(l+r)/2; I;.!
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if(l==r) return ; &B7+>Ix,
mergeSort(data,temp,l,mid); ?)o4 Kt'h
mergeSort(data,temp,mid+1,r); t k/K0u
for(int i=l;i<=r;i++){ >;&V~q:di
temp=data; Y=Ar3O*F
} nh&J3b}B!
int i1=l; -k[tFBlw
int i2=mid+1; e5>5/l]jsg
for(int cur=l;cur<=r;cur++){ v6DxxE2n
if(i1==mid+1) )"c]FI[}
data[cur]=temp[i2++]; L1!hF3G
else if(i2>r) MV;Y?%>
data[cur]=temp[i1++]; GKsL~;8"
else if(temp[i1] data[cur]=temp[i1++]; )bCG]OM7<
else Rw
ao5l=x
data[cur]=temp[i2++]; >&Ui*
} -}qGb}F8!
} bR8
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z2nUul(2
} PxVI{:Uz
6v2RS
改进后的归并排序: 3{I=#>;
u388Wj
package org.rut.util.algorithm.support; gQpD]p%k
mA] 84zO
import org.rut.util.algorithm.SortUtil; +?5Uy*$
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/** )<x;ra^
* @author treeroot X?v^>mA
* @since 2006-2-2 5)>ZO)F&
* @version 1.0 qnk,E-
*/ 7ru9dg1?
public class ImprovedMergeSort implements SortUtil.Sort { ZaUcP6[h
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private static final int THRESHOLD = 10; N} x/&e
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/* ! N"L`RWD
* (non-Javadoc) sRe#{EuJ
* ;LF)u2x=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Ckk5b
*/ .iP G /e
public void sort(int[] data) { w1"gl0ga$
int[] temp=new int[data.length]; M8",t{7
mergeSort(data,temp,0,data.length-1); 8NAWA3^B
} XC/]u%n8](
)*TW\v`B
private void mergeSort(int[] data, int[] temp, int l, int r) { kTiPZZI
int i, j, k; ]dGr1ncu
int mid = (l + r) / 2; Z*vpQBbu
if (l == r) S`2mtg
return; /,uSCITD
if ((mid - l) >= THRESHOLD) ]g8i>,G
mergeSort(data, temp, l, mid); gM;)
else Q&.IlVB[
insertSort(data, l, mid - l + 1); iQm.]A
if ((r - mid) > THRESHOLD) B=Zukg1G
mergeSort(data, temp, mid + 1, r); hV>4D&<
else @cS1w'=
insertSort(data, mid + 1, r - mid); sx-Hw4.a"
I"F
.%re
for (i = l; i <= mid; i++) { -M>K4*%K
temp = data; 5}d/8tS
} SN[L4}{
for (j = 1; j <= r - mid; j++) { '!yS72{$2
temp[r - j + 1] = data[j + mid]; g@k#J"Q'[
} ,2
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int a = temp[l]; ]4 K1%ZV
int b = temp[r]; ;5Wx$Yfx
for (i = l, j = r, k = l; k <= r; k++) { _86*.3fQG
if (a < b) { :uIi
?
data[k] = temp[i++]; &Xn8oe
a = temp; V'Z&>6Z
} else { 68J 9T^84
data[k] = temp[j--]; /XW&q)z-Hl
b = temp[j]; 8=n9hLhqo
} lZS_n9Sc
} +C'TW^
} >TlW]st
bQ^DX `o6P
/** q2S!m6 !
* @param data kY'<u
* @param l |Uy e>%*}4
* @param i 0U~;%N+lv
*/ _Ra<|NVQh
private void insertSort(int[] data, int start, int len) { #4P3xa
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U=&^H!LVY
} 4[LLnF--
} ElEv(>G*
} #LN5&i;s
} !sfXq"F
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堆排序: 7|+|\7l#
,TKs/-_?
package org.rut.util.algorithm.support; [w+h-q
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import org.rut.util.algorithm.SortUtil; JGk3b=K
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/** Uw2,o|=O
* @author treeroot |b$>68:
* @since 2006-2-2 `x{.z=xC
* @version 1.0 Sc4obcw%
*/ N"Qg\PS_
public class HeapSort implements SortUtil.Sort{ M1/M}~
+{")E)
/* (non-Javadoc) <fC@KY>#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S'
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*/ H[BD)
public void sort(int[] data) { E-yT
MaxHeap h=new MaxHeap(); O6m.t%*
h.init(data); L25kh}Q#7
for(int i=0;i h.remove(); `1E|PQbWc
System.arraycopy(h.queue,1,data,0,data.length); :mXGIRi
} :jt;EzCLg%
vU_d=T%$
private static class MaxHeap{ (~j,mk
fBf4]^
void init(int[] data){ 74@lo-/LY
this.queue=new int[data.length+1]; &v5G92
for(int i=0;i queue[++size]=data; r/NSD$-n
fixUp(size); [x2JFS#4
} ^CZCZ,v
} d5@X#3Hd
ADv^eJJ|
private int size=0; DS#cm3
a|DsHZ^6^
private int[] queue; Q^z=w![z
mR{CVU
public int get() { Y7<zm}=(/
return queue[1]; ]{f^;y8
} ==QWwPpA
hpbwZ
public void remove() { (C8 U
SortUtil.swap(queue,1,size--); doP$N3Zm
fixDown(1); v ! 7s
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} _GVE^yW~z
file://fixdown U@Z>/ q
private void fixDown(int k) { nNt*} k
int j; C`\9cej
while ((j = k << 1) <= size) { QGs1zfh*
if (j < size %26amp;%26amp; queue[j] j++; T>}0) s
if (queue[k]>queue[j]) file://不用交换 Bk?8zYp
break; T
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SortUtil.swap(queue,j,k); ,:D=gQ@`
k = j; a}:A, t<6
} v8ba~
} 2
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private void fixUp(int k) { 21r==
H$
while (k > 1) { T vrk^!
int j = k >> 1; (GCG/8s
if (queue[j]>queue[k]) Iz
DG&c
break; ?Bo?JMV
SortUtil.swap(queue,j,k); OFc\fW#
k = j; ojHhT\M`
} !Y (apVQ
} t#C,VwMe[
!Eq#[Gs
} <d5@CA+M
o^3FL||P#r
} 6cJ<9i
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SortUtil: rwiw
Rh
`E@kFJ(<On
package org.rut.util.algorithm; =M7TCE
EXuLSzQwv
import org.rut.util.algorithm.support.BubbleSort; MkwU<ae AB
import org.rut.util.algorithm.support.HeapSort; D^Te%qnW
import org.rut.util.algorithm.support.ImprovedMergeSort; w/ TKRCO3
import org.rut.util.algorithm.support.ImprovedQuickSort; l , ..5
import org.rut.util.algorithm.support.InsertSort; qu_)`wB
import org.rut.util.algorithm.support.MergeSort; u*2fP]n
import org.rut.util.algorithm.support.QuickSort; n-DaX
kK
import org.rut.util.algorithm.support.SelectionSort; R {HV]o|qk
import org.rut.util.algorithm.support.ShellSort; R (G2qi
+a%xyD:.?
/** 3gAR4
* @author treeroot xq}-m!nX
* @since 2006-2-2 \[yr=X
* @version 1.0 j&5G\6:
*/ >c<pDNt?
public class SortUtil { [F+(^- (
public final static int INSERT = 1; Y9F)`17
public final static int BUBBLE = 2; cJCU*(7&
public final static int SELECTION = 3; k<H%vg>{~s
public final static int SHELL = 4; (
#*"c
public final static int QUICK = 5; ~.J,A\F
public final static int IMPROVED_QUICK = 6; i}v9ut]B
public final static int MERGE = 7; W{
fZ[z
public final static int IMPROVED_MERGE = 8; @}Zd (o
public final static int HEAP = 9; Gqb])gXpl
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public static void sort(int[] data) { ;B~P>n}}_]
sort(data, IMPROVED_QUICK); .u l
53 m
} +Mk#9r
private static String[] name={ ]jyM@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @Br
{!#Wf
}; u:@U
$:sZ
Y25^]ON*\^
private static Sort[] impl=new Sort[]{ #02Kdo&Vy
new InsertSort(), Zb(E:~h\
new BubbleSort(), AEY$@!8
new SelectionSort(), [ $pmPr2
new ShellSort(), #EDEYEW7
new QuickSort(), 9Hd;353Q
new ImprovedQuickSort(), !;S"&mcPDJ
new MergeSort(),
.[?BlIlm
new ImprovedMergeSort(), R_^/,^1
new HeapSort() 0"78/6XIs
}; _T5)n=|
B/G-Yh$E
public static String toString(int algorithm){ /.Fj.6U5
return name[algorithm-1]; _%~$'Hy
} 54{q.I@n
+`B'r
'
public static void sort(int[] data, int algorithm) { 3uV4/%U
impl[algorithm-1].sort(data); w7FoL
} MPIlSMe
X8i(~
B
public static interface Sort { 5+- I5HX|~
public void sort(int[] data); hN3u@P^
} y7:tr
\=;uu_v$
public static void swap(int[] data, int i, int j) { Ye5jB2Z
int temp = data; wG1l+^p
data = data[j]; (&[[46
data[j] = temp; + H_MV=A^
} )55\4<ty
} im]g(#GnKh