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。 <F;v`h|+S
插入排序: +x=)/; :
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package org.rut.util.algorithm.support; eujK4s
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import org.rut.util.algorithm.SortUtil; P?LlJ5hn
/** 'm3t|:nMU
* @author treeroot MP^ d}FL
* @since 2006-2-2 ,HB2hHD
* @version 1.0 3*ixlO:qGk
*/ slu(SmQ
public class InsertSort implements SortUtil.Sort{ a(IY\q[Wh
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/* (non-Javadoc) !345 %,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X(A.X:"
*/ |TsE-t*E}
public void sort(int[] data) { {2&m`Dbm
int temp; &<y2q/U}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9Fo fr
} -d+aV1n
} ]:(W_qEA
} 5| B(\wqG
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} vb
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冒泡排序: gF?[rqz{
0 B@n{PvR0
package org.rut.util.algorithm.support; `B/0i A
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import org.rut.util.algorithm.SortUtil; ^3VR-u <O
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/** oA] KE"T
* @author treeroot O7d$YB_'
* @since 2006-2-2 ]z/Zq
* @version 1.0 #LlUxHv #
*/ K5Q43e1
public class BubbleSort implements SortUtil.Sort{ fhPkEvJ
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/* (non-Javadoc) ^I8Esl8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FBx_c;)9Z
*/ Jn:ZYqc
public void sort(int[] data) { &QRE"_g
int temp; C+[%7vF1
for(int i=0;i for(int j=data.length-1;j>i;j--){ sUZX
}
if(data[j] SortUtil.swap(data,j,j-1); &LO"g0w
} Od+6 -J
} q<y#pL=k"*
} ]i(-I <`
} m>USD?i
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} ,}oM-B
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选择排序: :B3[:MpL}
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package org.rut.util.algorithm.support; lC:k7<0Ji
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import org.rut.util.algorithm.SortUtil; C~fjWz' V
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/** mxor1P#|
* @author treeroot |*Z$E$k:
* @since 2006-2-2 D\IjyZ-O
* @version 1.0 #/PA A
*/ QXCH(5as
public class SelectionSort implements SortUtil.Sort { V5+SWXZ
l/;X?g5+
/* mF` B#
* (non-Javadoc) n]8<DX99Q0
* 21k5I #U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )`^p%k
*/ ),%6V5a+E
public void sort(int[] data) { s4&^D<
int temp; vJAZ%aW
for (int i = 0; i < data.length; i++) { Kw#so; e
int lowIndex = i; Ol4+_n8xj
for (int j = data.length - 1; j > i; j--) { ^C2\`jLMY
if (data[j] < data[lowIndex]) { xsWur(> ]
lowIndex = j; X,9 M"E
2
} ,{\Bze1fn
} l5L.5$N
SortUtil.swap(data,i,lowIndex); ySI~{YVM
} pp9Zb.D\
} AwQ?l(iZ"p
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} oK 6(HF'&
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Shell排序: o|jIM9/
'X shmZ0&
package org.rut.util.algorithm.support; 6 uKTGc4
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import org.rut.util.algorithm.SortUtil; Tw +
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/** ve&zcSeb
* @author treeroot ca+[0w@S
* @since 2006-2-2 fS^!ZPe1
* @version 1.0 McPNB`.H
*/ .*elggM
public class ShellSort implements SortUtil.Sort{ >>[G1
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/* (non-Javadoc) bXS:x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J,b&XD@m
*/ W_0>y9?
public void sort(int[] data) { {d?$m*YR3`
for(int i=data.length/2;i>2;i/=2){ 7Pa@1']
for(int j=0;j insertSort(data,j,i); O]qU[y+
} PfkrOsV/m
} 9{:O{nl
insertSort(data,0,1); !t i6
} ngGO0
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s
/** hR.@b*q?R
* @param data : }`-B0
* @param j `U2DkY&n
* @param i 2.d| G`
*/ KoS*0U<g6
private void insertSort(int[] data, int start, int inc) { '?({;/L
int temp; j)
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^ "\R\COQ
} `_&Vt=7lG
} /Wf^hA
} q{ O% |
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} v(pmIb{
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快速排序: Wq^qpN)5Y
J/3_C6UZ
package org.rut.util.algorithm.support; nJ"
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import org.rut.util.algorithm.SortUtil; sdS^e`S
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/** \cCV6A[
* @author treeroot YZ+RWu9K
* @since 2006-2-2
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* @version 1.0 #Z5}2soA
*/ y9KB< yh/
public class QuickSort implements SortUtil.Sort{ F-*2LMe
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/* (non-Javadoc) O2"gj"D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pD&&l!i&[
*/ ){Ob,LEU&
public void sort(int[] data) { *cO sv
quickSort(data,0,data.length-1); Ka`=WeJ|
} a/< Csad
private void quickSort(int[] data,int i,int j){ >fIk;6<{
int pivotIndex=(i+j)/2; S~Id5T:,
file://swap ^H6<Km
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SortUtil.swap(data,pivotIndex,j); B7"PIkk;
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int k=partition(data,i-1,j,data[j]); X_v[MW
SortUtil.swap(data,k,j); )TmHhNo
if((k-i)>1) quickSort(data,i,k-1); x\Y $+A,P
if((j-k)>1) quickSort(data,k+1,j); "al`$ %(
u_).f<mUdF
} lq"f[-8a2q
/** D?Ux[O zb
* @param data XQ*eP?OS{
* @param i )P|[r
* @param j vpU#xm.K
* @return HQ{JwW!m
*/ $m CarFV-T
private int partition(int[] data, int l, int r,int pivot) { rL5z]RY
do{ MJ=)v]a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !|<=ZF2
SortUtil.swap(data,l,r); Ks\ NE=;5
}
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while(l SortUtil.swap(data,l,r); *~/OOH$"
return l; N&[D>G]>v
} =rR~ `
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} jM:Y'l]
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改进后的快速排序: FaBqj1O1
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package org.rut.util.algorithm.support; >s` J5I!
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import org.rut.util.algorithm.SortUtil; .]
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/** iX\W;V
* @author treeroot }y%oT
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* @since 2006-2-2 +t2SzQ j>
* @version 1.0 zB?
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*/ \(">K
public class ImprovedQuickSort implements SortUtil.Sort { 3<F </
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private static int MAX_STACK_SIZE=4096; j w* IO
private static int THRESHOLD=10; srV.)Ur
/* (non-Javadoc) XO <y+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S1U@UC
*/ N4*G{g
public void sort(int[] data) { D3c2^r$Z
int[] stack=new int[MAX_STACK_SIZE]; $#|gLVOQ
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int top=-1; IG3,XW
int pivot; xm6 EKp:
int pivotIndex,l,r; H'qG/@u-l
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stack[++top]=0; 45&8weXO:'
stack[++top]=data.length-1; |7KeR-
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while(top>0){ _
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int j=stack[top--]; z_
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int i=stack[top--]; I!wX[4p eg
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pivotIndex=(i+j)/2; Ix|~f1*%
pivot=data[pivotIndex]; wZh:F
!
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SortUtil.swap(data,pivotIndex,j); {_U
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file://partition 1T)Zh+?)}
l=i-1; Eq:2k)BE
r=j; hAj1{pA,
do{ =_]2&(?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s6o>m*{
SortUtil.swap(data,l,r); VGqa)ri"
} RmI1`
while(l SortUtil.swap(data,l,r); I\|N
SortUtil.swap(data,l,j); V3mAvmx
,i.%nZw\
if((l-i)>THRESHOLD){ HMY@F_qY`u
stack[++top]=i; h3gWOU
stack[++top]=l-1; K)Zlc0e
} oRp:B&
if((j-l)>THRESHOLD){ 9%sM*[A
stack[++top]=l+1; 6x=YQwn~
stack[++top]=j; Npn=cLC&
} NcCvm#
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} V,EF'-F
file://new InsertSort().sort(data); D5?phyC[Z
insertSort(data); UofTll)
} zhB ">j8j
/** 0|D&"/.R#!
* @param data [0[M'![8M
*/ XN,,cU
private void insertSort(int[] data) { j<"nO(
int temp; *^ \FIUd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q+i\8RJ
} mDFlz1J,e
} ;3C:%!CdA]
} "8V{5e!%j'
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} }jSj+*
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归并排序: g<\z= H
\.e4.[%[2-
package org.rut.util.algorithm.support; A\te*G0:S
*@V*~^V"J[
import org.rut.util.algorithm.SortUtil; Hoz5 6y
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/** !NKmx=I]
* @author treeroot =7
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* @since 2006-2-2 #G3N(wV3
* @version 1.0 }g f}eH
*/ f"&Xr!b.h
public class MergeSort implements SortUtil.Sort{ pw'wWZE'
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/* (non-Javadoc) 5nCu~<uJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >CgO<\
*/ klWYuStZ
public void sort(int[] data) { TF+
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int[] temp=new int[data.length]; JhR W[~
mergeSort(data,temp,0,data.length-1); $M"0BZQ?y!
} Qu{cB^Ga*
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private void mergeSort(int[] data,int[] temp,int l,int r){ & 7QH^
int mid=(l+r)/2; [~Hg}-c
if(l==r) return ; g8pm2o@S
mergeSort(data,temp,l,mid); |;;!8VO3J
mergeSort(data,temp,mid+1,r); F}ukZ
DB
for(int i=l;i<=r;i++){ Y9}8M27vQG
temp=data; : \V,k~asl
} r>qA $zD^
int i1=l; OKwOugi0
int i2=mid+1; )wf\F6jN
for(int cur=l;cur<=r;cur++){ |LYKc.xo
if(i1==mid+1) nx4P^PC
data[cur]=temp[i2++]; J l7z|Q S
else if(i2>r) w4MwD?i]R
data[cur]=temp[i1++]; (N U0Tw
else if(temp[i1] data[cur]=temp[i1++]; O25mkX
else ?9U:g(v
data[cur]=temp[i2++]; Di??Q_$ak
} StQ@g
} `B#Z;R
kN'Thq/ZE
} sj9D
g_D-(J`IK,
改进后的归并排序: 2Ug.:![
lpEDPvD_Vm
package org.rut.util.algorithm.support; F ! )-|n}
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import org.rut.util.algorithm.SortUtil; *)PG-$6X&
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/** aV|k}H{wt
* @author treeroot Lbq_~
* @since 2006-2-2 44C+h
* @version 1.0 29O]S8
*/ NV!4(_~
public class ImprovedMergeSort implements SortUtil.Sort { {,V$*
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private static final int THRESHOLD = 10; c/$*%J<
Y.
TYc;
/* FX 1C
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* (non-Javadoc) /VtlG+dLl
* '?}R4w|)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YmCbxYa7
*/ %1jdiHTaL
public void sort(int[] data) { ^uBwj}6
int[] temp=new int[data.length]; !"(u_dFw
mergeSort(data,temp,0,data.length-1); Dm4B
} 4hNwKe"Ki
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private void mergeSort(int[] data, int[] temp, int l, int r) { *SGlqR['\e
int i, j, k;
/Su)|[/'
int mid = (l + r) / 2; ("F)
if (l == r) f=oeF]=I"
return; 4.k`[q8
if ((mid - l) >= THRESHOLD) _>Ln@
mergeSort(data, temp, l, mid); T/7vM 6u
else FAd``9kRT
insertSort(data, l, mid - l + 1); 4@~a<P#
if ((r - mid) > THRESHOLD) 5\?3$<1I
mergeSort(data, temp, mid + 1, r); K!7q!%Ju
else (.
H]|
insertSort(data, mid + 1, r - mid); u7(];
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for (i = l; i <= mid; i++) { u
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temp = data; D@5s8xv
} zze z~bv7:
for (j = 1; j <= r - mid; j++) { .S6ji~;r
temp[r - j + 1] = data[j + mid]; wzxdVn
'S
} () <`t}FQ
int a = temp[l]; w#<^RKk
int b = temp[r]; R%W@~o\p]
for (i = l, j = r, k = l; k <= r; k++) { ,M{Q}:$+4
if (a < b) { vh{9'vd3el
data[k] = temp[i++]; 2b!j.T#u
a = temp; 5R"2Wd
} else { a.CF9m5]c
data[k] = temp[j--]; O*ImLR)i+s
b = temp[j]; fo;6huz
} 4y1>
} \"J?@
} 5<^'Cy
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/** }!=gP.Zu^
* @param data Y.(v{l
* @param l y]<#%Fh
* @param i yT&x`3f"i
*/ *3P3M}3~\
private void insertSort(int[] data, int start, int len) { OZa88&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~JAjr(G#o
} 0 K/G&c?;=
} e& p_f<
} B%2L1T=
} q;ZLaX\bFl
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堆排序: /MhS=gVxM
\hrrPPD1z
package org.rut.util.algorithm.support; TZ:34\u
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import org.rut.util.algorithm.SortUtil; i,([YsRuou
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/** _Q)d+Fl
* @author treeroot %V31B\]Nz7
* @since 2006-2-2 W"dU1]
* @version 1.0 'YBi5_
*/ Xthtw *
public class HeapSort implements SortUtil.Sort{ B>sCP"/uV
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/* (non-Javadoc) QH4k!^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0r0c|*[+4z
*/ Jc`Rs"2
public void sort(int[] data) { 75kKDR}6
MaxHeap h=new MaxHeap(); ~:T3|
h.init(data); |O57N'/
for(int i=0;i h.remove(); L{Q4=p,A
System.arraycopy(h.queue,1,data,0,data.length); 7AI3|Ts]p
} ,.[.SU#V
ud yAP>
private static class MaxHeap{ Cca6L9%
qC\]"Z`m
void init(int[] data){ y+?=E g
this.queue=new int[data.length+1]; {a]pF.^kf
for(int i=0;i queue[++size]=data; S|~i>
fixUp(size); >~h>#{&
} r|l53I5
} PP!l
&}>|5>cJu
private int size=0; f9vcf# 2
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private int[] queue; $<
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5woIGO3X
public int get() { D}mo\
return queue[1]; >sn"
} MhHr*!N"}
)!N2'Ld
public void remove() { iP2U]d~M
SortUtil.swap(queue,1,size--); :/>7$)+
fixDown(1); ^Vl^,@
} ;>inT7?3|
file://fixdown ,D:iQDG^
private void fixDown(int k) { }/_('q@s\
int j; o~Bk0V=
while ((j = k << 1) <= size) { nsZDZ/jx
if (j < size %26amp;%26amp; queue[j] j++; lO551Y^
if (queue[k]>queue[j]) file://不用交换 ?+bTPl;%'
break; pZc9q8j3
SortUtil.swap(queue,j,k); Coga-: 2vu
k = j; R'vdk<
} 'u4}t5Bu5
} )EhTM-1
private void fixUp(int k) { FI3sLA
while (k > 1) { :X3rd|;kc
int j = k >> 1; |hu"5*
if (queue[j]>queue[k]) $.ymby
break; _pY
SortUtil.swap(queue,j,k); )fxo)GS
k = j; <'g0il
} 3{ .9O$
} p5lR-G
2AdX)iF@
} DH}s1mNMP
:GN)7|:
} d[~au=b
Gh>"s #+
SortUtil: N%|^;4}k
~*66 3pA
package org.rut.util.algorithm; @/_XS4
d/0/$Bz}P
import org.rut.util.algorithm.support.BubbleSort; 5A0KV7N5
import org.rut.util.algorithm.support.HeapSort; wo,""=l
import org.rut.util.algorithm.support.ImprovedMergeSort; t:?<0yfp&
import org.rut.util.algorithm.support.ImprovedQuickSort; rg#qSrHp
import org.rut.util.algorithm.support.InsertSort; 5O;/ lX!u
import org.rut.util.algorithm.support.MergeSort; Y}V)4j
import org.rut.util.algorithm.support.QuickSort; eLHa9R{)B
import org.rut.util.algorithm.support.SelectionSort; Y;a6:>D%cT
import org.rut.util.algorithm.support.ShellSort; +=n
x|:no
|YG)NO
/**
y)N.LS
* @author treeroot S&4w`hdD>~
* @since 2006-2-2 PO=ZxG
* @version 1.0 #C;#$|d
*/ sg! =Q+
public class SortUtil { ,g<>`={kK+
public final static int INSERT = 1; S>/I?(J
public final static int BUBBLE = 2; @B>%B EC
public final static int SELECTION = 3; B}TInI%H
public final static int SHELL = 4; F1Zk9%L%9$
public final static int QUICK = 5; `4"y#Z
public final static int IMPROVED_QUICK = 6; ve64-D
public final static int MERGE = 7; &?`d8\z
public final static int IMPROVED_MERGE = 8; ByB0>G''.
public final static int HEAP = 9; Sgjr4axu
I&Eg-96@
public static void sort(int[] data) { '|dKg"Yl
sort(data, IMPROVED_QUICK); >$k4@eg!
} d-A%ZAkE]
private static String[] name={ {ra Esb-X
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @BB,i /
}; ?(`nBlWQ5
K|Ij71
private static Sort[] impl=new Sort[]{ K4VPmkG
new InsertSort(), 45!`g+)
new BubbleSort(), '3Lx!pMhN
new SelectionSort(), YA8yMh*4D?
new ShellSort(), sDh6 Uk
new QuickSort(), 'nmYB:&!
new ImprovedQuickSort(), ['9OGV\
new MergeSort(), ]i_):@
new ImprovedMergeSort(), Qbe{/
new HeapSort() ^/5E773
}; .+yJh
OU
Yb-
public static String toString(int algorithm){ RIVN>G[;L
return name[algorithm-1]; .q;RNCUt
} .Q6{$Y%l
=f{Z~`3
public static void sort(int[] data, int algorithm) { "78cl*sD
impl[algorithm-1].sort(data); 4HYH\ey
} JY,l#?lM{
HWao3 Lz
public static interface Sort { |SJ%
_#=i
public void sort(int[] data); 5SPl#*W
} e\bF_
N2VA
|RbUmuj
public static void swap(int[] data, int i, int j) { N[?4yV2s
int temp = data; n6-!@RYr
data = data[j]; y^Xxa'y
data[j] = temp; FL_ arhrqD
} CB7R{~
$
} -<VF6k<