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。 qB5.of[N!
插入排序: /_</m?&.U&
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package org.rut.util.algorithm.support; #eIFRNRb)
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import org.rut.util.algorithm.SortUtil; %uDH_J|^
/** "NtY[sT{V
* @author treeroot <.hutU*1
* @since 2006-2-2 vKBijmE
* @version 1.0 3<HZ)w^B
*/ 4d\V=_);r
public class InsertSort implements SortUtil.Sort{ Ui.S)\B
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/* (non-Javadoc) Uj)Wbe[)p0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~3Y4_b5E
*/ c3.;o
public void sort(int[] data) { Q)=LbR{#
int temp; u(i=-PN_<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i!EAs`$o`
} {r'+icvLX
} X}H?*'-
} U=PTn(2
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} `T{'ufI4B
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冒泡排序: @MO/LvD
V.Tn1i-v
package org.rut.util.algorithm.support; PU8dr| !
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import org.rut.util.algorithm.SortUtil; )3k?{1:
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/** [Qcht,\^v
* @author treeroot Rqr>B(|
* @since 2006-2-2 rFaG-R
* @version 1.0 3~:9ZWQ/
*/ N-W>tng_x
public class BubbleSort implements SortUtil.Sort{ H$.K
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/* (non-Javadoc) 0o!mlaU#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Qhj_
*/ Xw3j(`w$,
public void sort(int[] data) { a|#TnSk
int temp; 9{
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for(int i=0;i for(int j=data.length-1;j>i;j--){ |}b~YHTs
if(data[j] SortUtil.swap(data,j,j-1); 7}vI/?r
} kpXxg: c
} <~P!yL r
} %OOkPda
} KD.|oo
qA"BoSw 4
} Q-z `rW
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选择排序: V-eRGSx
W4UK?#S+
package org.rut.util.algorithm.support; {@6:kkd
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import org.rut.util.algorithm.SortUtil; ~d\^ynQ
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/** hZlHY9[t?
* @author treeroot B<i(Y1n[
* @since 2006-2-2 zK&1ti@wln
* @version 1.0 ,3N>`]Km'
*/ -E~r?\;X
public class SelectionSort implements SortUtil.Sort { L9-Jwy2(>
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/* 7ug"SV6Hb
* (non-Javadoc) HLOrDlj7
* f;AI4:#I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7hTpjox2
*/ d::9,~
public void sort(int[] data) { OTl9MwW
int temp; .>z1BP:(
for (int i = 0; i < data.length; i++) { YgdQC(ib
int lowIndex = i; "blq)qo)
for (int j = data.length - 1; j > i; j--) { lV$CBS
if (data[j] < data[lowIndex]) { )K$YL='kX
lowIndex = j; ;dPaWS1D
} U!NuiKaQ26
} zXD/hM
SortUtil.swap(data,i,lowIndex); h8X[*Wme
} XwFTAaZ
} .]s? 01Z
>]8(3&zd
} s1h|/7gG
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Shell排序: uVKe ?~RC
`S0`3q}L3%
package org.rut.util.algorithm.support; _QEw=*.<
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import org.rut.util.algorithm.SortUtil; >I/@GX/
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/** $v #
* @author treeroot bX$1PYX
* @since 2006-2-2 Y[]I!Bc
* @version 1.0 :)i,K>y3i
*/ NU3TXO
public class ShellSort implements SortUtil.Sort{ z~3GgR"1d
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/* (non-Javadoc) AwjXY,2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZuybjV1/f6
*/ [NAfy~X*
public void sort(int[] data) { rZ|p{ym
for(int i=data.length/2;i>2;i/=2){ ]E$NJq|
for(int j=0;j insertSort(data,j,i); vbn=ywz
} kDDC@A $
} \Oq8kJ=
insertSort(data,0,1); *hru);OJr
} g$^-WmX\m
~TsRUT
/** YoW)]n
* @param data URs]S~tk
* @param j ox%j_P9@:
* @param i AH :uG#
*/ e4,SR(O>
private void insertSort(int[] data, int start, int inc) { f;Oh"Yt
int temp; "[!b5f3!I
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qB (Pqv
} 9:Oz-b
} oKsArZG
} ?&-1(&
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} ,h*N9}xYTi
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快速排序: 0&j90J$`
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package org.rut.util.algorithm.support; zWhj>Za
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import org.rut.util.algorithm.SortUtil; /AADFa
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/** JRw,${W
* @author treeroot KILX?Pt[7
* @since 2006-2-2 !p).3Kx0
* @version 1.0 eG1V:%3
*/ `WN80d\)&
public class QuickSort implements SortUtil.Sort{ >5#}/G&
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/* (non-Javadoc) RrvC}9ar
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xYCJO(&
*/ Qv5fK
public void sort(int[] data) { 38D5vT)n
quickSort(data,0,data.length-1); E I(e3
} w~)tEN>
private void quickSort(int[] data,int i,int j){ )xccs'H
int pivotIndex=(i+j)/2; JJ7A`
;
file://swap 9Y'pT.Gyb
SortUtil.swap(data,pivotIndex,j); EW(bM^dk}
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int k=partition(data,i-1,j,data[j]); OPDT:e86Y=
SortUtil.swap(data,k,j); N-?5[T"
if((k-i)>1) quickSort(data,i,k-1); +T@BOYhgq
if((j-k)>1) quickSort(data,k+1,j); Hp04apM:
s$isDG#Sr
} Y&j`HO8f
/** &`@YdZtd"
* @param data D\&S {
* @param i 84.L1|k
* @param j #WSqh +
* @return RW+u5Y
*/ 9Z!n!o7D
private int partition(int[] data, int l, int r,int pivot) { F0p=|W
do{ X':FFD4h
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ajm!;LA[jO
SortUtil.swap(data,l,r); 4h@,hY1#
} )gdLb}
while(l SortUtil.swap(data,l,r); zUL,~u
return l; QF/_?Tm4
} zP%s] >hH
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} XJ\R'?j
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改进后的快速排序: 9>w~B|/
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package org.rut.util.algorithm.support; &Y?t
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import org.rut.util.algorithm.SortUtil; 0>Snps3*Z
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/** (cOe*>L;
* @author treeroot |Q3d7y
* @since 2006-2-2 &L$9Ii
* @version 1.0 ZI!:
*/ }6%XiP|
public class ImprovedQuickSort implements SortUtil.Sort { r[i^tIv6As
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private static int MAX_STACK_SIZE=4096; Q}@t'
private static int THRESHOLD=10; @!fUp
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/* (non-Javadoc) &]o-ZZX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XQ}J4J~Vm
*/ rgzra"u)
public void sort(int[] data) { NplyvjQN;
int[] stack=new int[MAX_STACK_SIZE]; &M}X$k I
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int top=-1; B1)Eo2i#
int pivot; Fb(@i
int pivotIndex,l,r; bPxL+
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stack[++top]=0; ;yomaAr
stack[++top]=data.length-1; )~wKRyQff
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while(top>0){ Pj
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int j=stack[top--]; d j\Z}[
int i=stack[top--]; XYzaSp=bb
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pivotIndex=(i+j)/2; uVn"L:_
pivot=data[pivotIndex]; Ahwi
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SortUtil.swap(data,pivotIndex,j); |ZH(Z}m
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file://partition .@,t}:lD
l=i-1; d#0:U
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r=j; 7yfh4-1M
do{ cpjwc@UMe
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); jjV'`Vy)
SortUtil.swap(data,l,r); \s*M5oN]]
} d. vNiq,`
while(l SortUtil.swap(data,l,r); e3;&
SortUtil.swap(data,l,j); %v8&
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if((l-i)>THRESHOLD){ }pMVl
stack[++top]=i; R!j #
stack[++top]=l-1; OZxJDg
} >)ekb7
if((j-l)>THRESHOLD){ q~R8<G%YK
stack[++top]=l+1; YbP
@
stack[++top]=j; ^w^e~0
S
} ]
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MQ!4"E5"j
} $t;:"i>
file://new InsertSort().sort(data); _X4Y1zh
insertSort(data); S $p>sItO
} u8zL[]>
/** 0DicrnH8
* @param data zzf@U&x<
*/ uy
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private void insertSort(int[] data) { eC!=4_lx)
int temp; q%4X1 W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S oeoUI]m
} k9x[(
#
} x
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} @
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} z{W Cw
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归并排序: @Y/&qpo$#W
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package org.rut.util.algorithm.support; /yG7!k]Eg
12Oa_6<\0;
import org.rut.util.algorithm.SortUtil; inGUN??
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/** *K|~]r(F?
* @author treeroot =VD],R)
* @since 2006-2-2 >_2~uF@pb
* @version 1.0 n&:ohOH%
*/ n*7^lAa2
public class MergeSort implements SortUtil.Sort{ +c~&o83[
]:gW+6w"C
/* (non-Javadoc) Ok_}d&A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9w=7A>.U
*/ +7gd1^|$e
public void sort(int[] data) { _2jL]mB
int[] temp=new int[data.length]; PB@IPnB-
mergeSort(data,temp,0,data.length-1); VgNB^w
} Jo {:]:
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private void mergeSort(int[] data,int[] temp,int l,int r){ ?/o 8f7Z
int mid=(l+r)/2; w,p'$WC*
if(l==r) return ; T aS1%(
mergeSort(data,temp,l,mid); KkCGL*]K
mergeSort(data,temp,mid+1,r); |cU75
S 1
for(int i=l;i<=r;i++){ n2K1X!E$
temp=data; d=vuy
} |}4\Gm
int i1=l; f}bq
int i2=mid+1; r84^/+"T
for(int cur=l;cur<=r;cur++){ R/oi6EKv
if(i1==mid+1) j0e,>X8
data[cur]=temp[i2++]; kkjugm{D7
else if(i2>r) E2dM0r<]
data[cur]=temp[i1++]; Z^|N]Ej
else if(temp[i1] data[cur]=temp[i1++]; ~X3g_<b_8
else F}}!e.>c
data[cur]=temp[i2++]; $2a"Ec!7
} tDRR 3=9pX
} ]6e(-v!U
|]9@JdmV
} T01Iu
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改进后的归并排序: x-[ItJ% l
hS,&Nj+
package org.rut.util.algorithm.support; xF[%R{Mn'
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import org.rut.util.algorithm.SortUtil; `6~0W5
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/** *a Z1 4
* @author treeroot U823q-x
* @since 2006-2-2 M8~3 0L
* @version 1.0 FaeKDbLJr
*/ 9vV==A#
public class ImprovedMergeSort implements SortUtil.Sort { vaB ql(?'2
4
.
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private static final int THRESHOLD = 10; F@?-^ E@
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/* N6._Jb
* (non-Javadoc) N0p6xg~
* a^%)6E.[,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p3A9<g
*/
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public void sort(int[] data) { G%I
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int[] temp=new int[data.length]; ]Kt@F0U<o
mergeSort(data,temp,0,data.length-1); osXEzr(
} Vkg0C*L_
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private void mergeSort(int[] data, int[] temp, int l, int r) { 2K9X (th1
int i, j, k; !'N@ZZ
int mid = (l + r) / 2; B@(d5i{h
if (l == r) #4Z e2T|
return; 1b~21n
if ((mid - l) >= THRESHOLD) #+ch
mergeSort(data, temp, l, mid); #NFB=oJI
else 94w)Yln
insertSort(data, l, mid - l + 1); h^ Cm\V
if ((r - mid) > THRESHOLD) {IgH0+z
mergeSort(data, temp, mid + 1, r); $eFMn$o
else ;M.Q=#;E
insertSort(data, mid + 1, r - mid); 0OM^,5%8
M=raKb?F
for (i = l; i <= mid; i++) { 4 eLZ
temp = data; 1b3 a(^^E
} DKjiooD
for (j = 1; j <= r - mid; j++) { 9E ^!i
temp[r - j + 1] = data[j + mid]; g[(@@TiG
} .aT@'a{F
int a = temp[l]; K;6#v%
int b = temp[r]; ':(AiD -}
for (i = l, j = r, k = l; k <= r; k++) { :GIBB=D9
if (a < b) { gkd4)\9
data[k] = temp[i++]; ." xP{
a = temp; m8L *LB
} else { KM;H '~PZi
data[k] = temp[j--]; ,1{qZ(l1
b = temp[j]; a]r+np]vTy
} (}39f
} 4J5 zSTw
} o4" [{LyT
1L!;lP2
/** !MKecRG_
* @param data )J[m>tyY5
* @param l Z9DfwWI2nu
* @param i N)"8CvQL
*/ [_JdV(]$
private void insertSort(int[] data, int start, int len) { n0lOq
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *<sc[..)
} 44u)F@)
} &{? M} 2I
} sbmtx/%U
} +bE{g@%@+
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堆排序: KyNu8s k
K[icVT2v~
package org.rut.util.algorithm.support; + Tp% *
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import org.rut.util.algorithm.SortUtil; ym|7i9
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/** S=,czs3N
* @author treeroot l6bY!I>
* @since 2006-2-2 EsKgS\`RZ
* @version 1.0 tM]Gu?6
*/ kf'(u..G
public class HeapSort implements SortUtil.Sort{ v;\cM/&5
RFRXOyGz$
/* (non-Javadoc) ?xqS#^Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $l*?Ce:
*/ )8C`EPe
public void sort(int[] data) { m538p.(LIR
MaxHeap h=new MaxHeap(); TnN
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h.init(data); :f[ w
for(int i=0;i h.remove(); |~5cNm
System.arraycopy(h.queue,1,data,0,data.length); _O}m0c
} 2"G9?)d9
{
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private static class MaxHeap{ oYN"L
_ \4#I(
void init(int[] data){ `/[5/%
this.queue=new int[data.length+1]; d0)]^4HT|y
for(int i=0;i queue[++size]=data; ?+.mP]d_
fixUp(size); #A5X,-4G
} Sesdhuy.@
} @.7/lRr@bp
}W'j Dz7O
private int size=0; [p6:uNo
]B )nN':
private int[] queue; c?CD;Pk
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public int get() { jVnTpa!A
return queue[1]; 8vuTF*{yZ
} o6A$)m5V
hM]Z T5;<
public void remove() { H/{@eaV
SortUtil.swap(queue,1,size--); y^ skE{
fixDown(1); Kn->R9Tl
} //c6vG
file://fixdown <\epj=OclV
private void fixDown(int k) { F2
B(PGa7
int j; h|]cZMGo
while ((j = k << 1) <= size) { OpaRQ=
if (j < size %26amp;%26amp; queue[j] j++; :j`f%Vg~x
if (queue[k]>queue[j]) file://不用交换 h"ZIh= j@
break; `R2Iw
I&
SortUtil.swap(queue,j,k); >s5}pkAv|e
k = j; =J1V?x=l@
} pK-tj
} }ex4dhx2M
private void fixUp(int k) { x[lIib1s
while (k > 1) { _6fy'%J=U
int j = k >> 1; ?w(hPUd!2
if (queue[j]>queue[k]) D\5+2 G
break; 7R6B}B?/
SortUtil.swap(queue,j,k); n5C,Z!)z
k = j; #Gi`s?
} `T*Y1@FV
} *{VC<<`
cRs.@U\{R\
} </;e$fh`
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} l1T`[2
Y0g]-B
SortUtil: oIO@#
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package org.rut.util.algorithm; )yyH_Ax2
[lML^CYQ
import org.rut.util.algorithm.support.BubbleSort; ZY,$oFdsi
import org.rut.util.algorithm.support.HeapSort; 9~`#aQG T
import org.rut.util.algorithm.support.ImprovedMergeSort; xwo*kFg
import org.rut.util.algorithm.support.ImprovedQuickSort; wKi#5k2
import org.rut.util.algorithm.support.InsertSort; ^S`hKv&87
import org.rut.util.algorithm.support.MergeSort;
ZY8.p
import org.rut.util.algorithm.support.QuickSort; )!0}<_2
import org.rut.util.algorithm.support.SelectionSort; I;rW!Hb
import org.rut.util.algorithm.support.ShellSort; B0yJ9U= Fj
C5^WJx[
/** q>(?Z#sB
* @author treeroot ((`\i=-o5
* @since 2006-2-2 )&T 5/+
* @version 1.0 FDgo6x
*/ t#(=$
public class SortUtil { m
Z
+dr[
public final static int INSERT = 1; EHq;eF
public final static int BUBBLE = 2; HXT"&c|
public final static int SELECTION = 3; -6J <{1V
public final static int SHELL = 4; MUbKlX
public final static int QUICK = 5; zlP{1z;nV
public final static int IMPROVED_QUICK = 6; <O=0 ^V
public final static int MERGE = 7; l|
uiC%T
public final static int IMPROVED_MERGE = 8; Rw
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public final static int HEAP = 9;
[{2v}
mTsyVji8
public static void sort(int[] data) { k~AtnI
sort(data, IMPROVED_QUICK); i ZPNss
} F_0D)H)N@
private static String[] name={ h;vY=r-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Eb~vNdPo
}; Ag2~q
}&+,y<>
private static Sort[] impl=new Sort[]{ _*UI}JtlS
new InsertSort(), :q3w;B~
new BubbleSort(), B`)sc ~u
new SelectionSort(), !2Ompcr1
new ShellSort(), 1\,k^Je7
new QuickSort(), Gjeb)Y6N
new ImprovedQuickSort(), =c\(]xX
new MergeSort(), %Qz<Lk">.
new ImprovedMergeSort(), "7EK{6&jQ
new HeapSort() ~x(|'`
}; iLv
-*%%
3r#['UmT
public static String toString(int algorithm){ W*s=No3C
return name[algorithm-1]; P !f{U;B
} %r.OV_04
ShL!7y*rT{
public static void sort(int[] data, int algorithm) { F(.`@OO
impl[algorithm-1].sort(data); oUsfO-dET^
} 7:F0?l*
EGI$=Y
public static interface Sort { _R(ZvsOZ
public void sort(int[] data); .lj5pmD
} :vIJ>6lIR
" 4#&tNQ
public static void swap(int[] data, int i, int j) { .n+
;&5
int temp = data; w=?nD6Xhz
data = data[j]; k waZn~
data[j] = temp; }Ifa5Lq)
} p>pN?53S
} '*XIp: